{"id":6472,"date":"2026-07-13T14:54:04","date_gmt":"2026-07-13T22:54:04","guid":{"rendered":"https:\/\/changyupump.com\/?p=6472"},"modified":"2026-07-13T14:54:05","modified_gmt":"2026-07-13T22:54:05","slug":"copper-sx-ew-slurry-pump","status":"publish","type":"post","link":"https:\/\/changyupump.com\/fr\/blog\/copper-sx-ew-slurry-pump\/","title":{"rendered":"Pompe \u00e0 boues pour SX-EW du cuivre : Guide de lixiviation acide et extraction par solvant"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Quick Answer<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A&nbsp;<strong>Copper SX-EW slurry pump<\/strong>&nbsp;serves the hydrometallurgical process that extracts copper from oxide ores through sulfuric acid leaching, solvent extraction with organic reagents, and electrowinning. No single pump serves all three stages. Key selection factors:<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>Leaching demands wear resistance<\/strong>: Pregnant leach solution (PLS) carries fine ore particles in sulfuric acid. This combined abrasion and acid attack requires UHMWPE-lined or high-chrome alloy pumps that resist both erosion and corrosion.<\/li>\n\n\n\n<li><strong>Solvent extraction demands zero leakage<\/strong>: The organic phase \u2014 kerosene-based diluent with oxime extractant \u2014 is flammable, expensive, and regulated. Sealless magnetic drive pumps or double mechanical seals are the standard for preventing fire hazard and reagent loss.<\/li>\n\n\n\n<li><strong>Electrowinning demands purity<\/strong>: Copper-rich electrolyte must remain free of metal ion contamination. Pumps that leach iron, nickel, or chromium degrade cathode quality. Fluoroplastic-lined pumps are required for this stage.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">SX-EW accounts for approximately 20% of global copper production. Plants operate continuously in remote locations where equipment reliability determines profitability. A pump failure in leaching stops production. A seal leak in solvent extraction triggers a safety incident. A contamination event in electrowinning degrades cathode purity.<\/p>\n\n\n<style>.kb-image6472_d8e0f4-38 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<figure class=\"wp-block-kadence-image kb-image6472_d8e0f4-38 size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/changyupump.com\/wp-content\/uploads\/2026\/07\/Copper-SX-EW-Slurry-Pump-Acid-Leach-Solvent-Extraction-Guide.webp\" alt=\"Copper SX-EW Slurry Pump Acid Leach &amp; Solvent Extraction Guide\" class=\"kb-img wp-image-6479\" srcset=\"https:\/\/changyupump.com\/wp-content\/uploads\/2026\/07\/Copper-SX-EW-Slurry-Pump-Acid-Leach-Solvent-Extraction-Guide.webp 1000w, https:\/\/changyupump.com\/wp-content\/uploads\/2026\/07\/Copper-SX-EW-Slurry-Pump-Acid-Leach-Solvent-Extraction-Guide-300x225.webp 300w, https:\/\/changyupump.com\/wp-content\/uploads\/2026\/07\/Copper-SX-EW-Slurry-Pump-Acid-Leach-Solvent-Extraction-Guide-150x113.webp 150w, https:\/\/changyupump.com\/wp-content\/uploads\/2026\/07\/Copper-SX-EW-Slurry-Pump-Acid-Leach-Solvent-Extraction-Guide-768x576.webp 768w, https:\/\/changyupump.com\/wp-content\/uploads\/2026\/07\/Copper-SX-EW-Slurry-Pump-Acid-Leach-Solvent-Extraction-Guide-16x12.webp 16w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">After reading this guide, you will understand the pumping demands of each SX-EW stage, which materials resist acid corrosion and solids abrasion, how to specify leak-free pumps for organic phase, what purity requirements apply to EW electrolyte pumps, and which pump types deliver the lowest total cost of ownership. With over 20 years of pump manufacturing experience, Changyu Pump presents this selection guide for copper hydrometallurgy.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1. What Are the Key Stages in Copper SX-EW?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Copper&nbsp;<a href=\"https:\/\/en.wikipedia.org\/wiki\/Solvent_extraction_and_electrowinning\" target=\"_blank\" rel=\"noreferrer noopener\">solvent extraction-electrowinning<\/a>&nbsp;produces high-purity copper cathode through three stages, each with distinct pumping requirements.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Leaching:<\/strong>&nbsp;Crushed copper oxide ore is irrigated with dilute&nbsp;<a href=\"https:\/\/en.wikipedia.org\/wiki\/Sulfuric_acid\" target=\"_blank\" rel=\"noreferrer noopener\">sulfuric acid<\/a>. The acid dissolves copper, producing PLS (1\u20135 g\/L Cu, pH 1.5\u20132.0) with fine suspended ore particles. PLS pumps transfer this abrasive, acidic solution to the SX plant. After copper extraction, the depleted raffinate returns to the leach pad.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Solvent Extraction (SX):<\/strong>&nbsp;PLS contacts an organic phase \u2014 kerosene diluent with oxime extractant \u2014 that selectively binds copper. The loaded organic is stripped with highly acidic spent electrolyte (180\u2013200 g\/L H\u2082SO\u2084, 30\u201335 g\/L Cu), producing copper-rich electrolyte for electrowinning. Three fluids require pumping: aqueous PLS\/raffinate, organic phase, and rich electrolyte. The organic phase pump demands particular attention \u2014 reagents are flammable and volatile.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Electrowinning (EW):<\/strong>&nbsp;Copper-rich electrolyte flows through electrolytic cells where direct current deposits pure copper onto cathode blanks. After harvesting, depleted electrolyte returns to SX stripping.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">SX-EW Fluid Characteristics<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Process Stage<\/th><th class=\"has-text-align-left\" data-align=\"left\">Fluid<\/th><th class=\"has-text-align-left\" data-align=\"left\">Copper<\/th><th class=\"has-text-align-left\" data-align=\"left\">Acid \/ Chemistry<\/th><th class=\"has-text-align-left\" data-align=\"left\">Solids<\/th><th class=\"has-text-align-left\" data-align=\"left\">Temperature<\/th><\/tr><\/thead><tbody><tr><td>Leaching<\/td><td>PLS \/ Raffinate<\/td><td>1\u20135 g\/L<\/td><td>pH 1.5\u20132.0 H\u2082SO\u2084<\/td><td>Fine ore particles<\/td><td>Ambient to 40\u00b0C<\/td><\/tr><tr><td>SX Extraction<\/td><td>Organic phase<\/td><td>Loaded with Cu<\/td><td>Kerosene + oxime<\/td><td>None in design; may contain crud<\/td><td>25\u201335\u00b0C<\/td><\/tr><tr><td>SX Stripping<\/td><td>Rich electrolyte<\/td><td>30\u201335 g\/L<\/td><td>180\u2013200 g\/L H\u2082SO\u2084<\/td><td>None<\/td><td>35\u201345\u00b0C<\/td><\/tr><tr><td>EW<\/td><td>Electrolyte<\/td><td>30\u201335 g\/L<\/td><td>180\u2013200 g\/L H\u2082SO\u2084<\/td><td>None<\/td><td>40\u201350\u00b0C<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">2. What Materials Are Compatible with SX-EW Fluids?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Material selection is complex because the three stages expose pumps to fundamentally different challenges.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Material Compatibility Matrix<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Material<\/th><th class=\"has-text-align-left\" data-align=\"left\">PLS \/ Raffinate<\/th><th class=\"has-text-align-left\" data-align=\"left\">Organic Phase<\/th><th class=\"has-text-align-left\" data-align=\"left\">EW Electrolyte<\/th><\/tr><\/thead><tbody><tr><td>316L Stainless<\/td><td>Not recommended \u2014 rapid erosion-corrosion<\/td><td>Acceptable<\/td><td>Limited \u2014 may leach trace metals<\/td><\/tr><tr><td>Duplex 2205<\/td><td>Better than 316L<\/td><td>Acceptable<\/td><td>Acceptable<\/td><\/tr><tr><td>High-Chrome (Cr27\u201333)<\/td><td>Good \u2014 excellent abrasion<\/td><td>Not for organic contact<\/td><td>Not recommended \u2014 may leach chromium<\/td><\/tr><tr><td>UHMW-PE Lined<\/td><td>Optimal \u2014 combines acid + abrasion resistance<\/td><td>Limited \u2014 slight swelling possible with kerosene<\/td><td>Not recommended \u2014 temperature limit 90\u00b0C<\/td><\/tr><tr><td>FEP \/ PFA Lined<\/td><td>Good \u2014 excellent acid resistance<\/td><td>Excellent \u2014 universal organic resistance<\/td><td>Excellent \u2014 zero metal leaching<\/td><\/tr><tr><td>PP<\/td><td>Good \u2014 economic choice<\/td><td>Acceptable<\/td><td>Acceptable \u2014 temperature limit ~80\u00b0C<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Material Selection by Stage<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Stage<\/th><th class=\"has-text-align-left\" data-align=\"left\">Primary Challenge<\/th><th class=\"has-text-align-left\" data-align=\"left\">Recommended Material<\/th><th class=\"has-text-align-left\" data-align=\"left\">Alternative<\/th><\/tr><\/thead><tbody><tr><td>Leaching (PLS\/Raffinate)<\/td><td>Abrasion + acid<\/td><td>UHMW-PE lined centrifugal<\/td><td>High-chrome alloy<\/td><\/tr><tr><td>SX Organic Phase<\/td><td>Flammable \u2014 zero leak<\/td><td>FEP\/PFA-lined magnetic drive<\/td><td>316L with double seal + ATEX\/IECEx motor<\/td><\/tr><tr><td>EW Electrolyte<\/td><td>High purity<\/td><td>FEP\/PFA-lined centrifugal<\/td><td>PVDF centrifugal<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Engineers at Changyu Pump recommend:<\/strong>&nbsp;For PLS and raffinate, specify UHMW-PE lined centrifugal pumps as the baseline \u2014 the optimal combination of acid and abrasion resistance at copper mining cost points. For organic phase, specify sealless magnetic drive pumps with FEP\/PFA lining and ATEX- or IECEx-certified motors. For EW electrolyte, specify FEP\/PFA-lined pumps to prevent metal ion contamination of cathode-quality copper.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3. How to Select Pumps for the Copper SX-EW Leaching Stage?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Leaching stage pumps handle the largest flow volumes in the most demanding conditions. PLS and raffinate pumps move thousands of cubic meters daily of acidic, abrasive solution.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Leaching Pump Selection<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Pump Type<\/th><th class=\"has-text-align-left\" data-align=\"left\">Recommendation<\/th><th class=\"has-text-align-left\" data-align=\"left\">Notes<\/th><\/tr><\/thead><tbody><tr><td>UHMW-PE Lined Centrifugal<\/td><td>Primary choice<\/td><td>Optimal acid + abrasion resistance; replaceable liners<\/td><\/tr><tr><td>High-Chrome Alloy (Cr27\u201333)<\/td><td>Coarse solids alternative<\/td><td>Lower acid resistance than UHMW-PE<\/td><\/tr><tr><td>Super Duplex 2507<\/td><td>Moderate abrasion, higher temp<\/td><td>Higher cost; requires wear plates<\/td><\/tr><tr><td>Magnetic Drive<\/td><td>Intermittent PLS, zero leak<\/td><td>Not for high solids<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Key specifications:<\/strong>&nbsp;Size for maximum PLS flow plus 15\u201320% margin. Specify semi-open impellers for fine solids passage. Protect mechanical seals with external flush (1\u20132 bar above seal chamber, 2\u20135 L\/min) or closed-loop barrier fluid system in arid regions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Engineers at Changyu Pump recommend:<\/strong>&nbsp;Specify UHMW-PE lined centrifugal pumps with semi-open impellers, seal protection system, and VFD control. The UHMW-PE lining provides the wear life for reliable operation between shutdowns.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">4. How to Select Pumps for the Copper SX-EW Solvent Extraction Stage?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The SX stage presents the most diverse pumping challenges: aqueous PLS\/raffinate, flammable organic phase, and highly acidic rich electrolyte.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Organic Phase Pump Requirements<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Three factors drive organic phase pump specification:&nbsp;<strong>fire safety<\/strong>&nbsp;(kerosene is flammable),&nbsp;<strong>reagent value<\/strong>&nbsp;(oxime extractant is expensive), and&nbsp;<strong>environmental regulation<\/strong>&nbsp;(VOC emissions are restricted). Organic phase pumps must either eliminate the mechanical seal entirely or provide double mechanical seal with barrier fluid and leak detection.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">SX Stage Pump Selection<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Application<\/th><th class=\"has-text-align-left\" data-align=\"left\">Recommended Pump<\/th><th class=\"has-text-align-left\" data-align=\"left\">Key Specification<\/th><\/tr><\/thead><tbody><tr><td>Organic phase<\/td><td>Sealless magnetic drive with FEP\/PFA lining<\/td><td>ATEX\/IECEx motor; PEEK containment shell<\/td><\/tr><tr><td>PLS \/ Raffinate<\/td><td>UHMW-PE lined centrifugal<\/td><td>Same as leaching stage<\/td><\/tr><tr><td>Rich electrolyte<\/td><td>FEP\/PFA-lined centrifugal or magnetic drive<\/td><td>High acid resistance; no metal leaching<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Engineers at Changyu Pump recommend:<\/strong>&nbsp;For all organic phase pumping, specify sealless magnetic drive pumps with FEP\/PFA lining and ATEX- or IECEx-certified motors. The incremental cost is recovered within the first avoided organic leak.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">5. How to Select Pumps for the Copper SX-EW Electrowinning Stage?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The&nbsp;<a href=\"https:\/\/en.wikipedia.org\/wiki\/Electrowinning\" target=\"_blank\" rel=\"noreferrer noopener\">electrowinning<\/a>&nbsp;stage produces the final copper product. Electrolyte circulation pumps must deliver continuous flow with absolute purity \u2014 metal ion contamination directly degrades cathode quality.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Zero metal ion leaching:<\/strong>&nbsp;Electrolyte (180\u2013200 g\/L H\u2082SO\u2084, 30\u201335 g\/L Cu) at 40\u201350\u00b0C aggressively attacks standard stainless steel, leaching iron, nickel, and chromium. These ions co-deposit with copper, reducing cathode purity and market value.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Temperature considerations:<\/strong>&nbsp;FEP lining serves standard EW electrolyte at 40\u201350\u00b0C. For circuits where temperature excursions above 80\u00b0C are possible, upgrade to PFA lining.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">EW Stage Pump Selection<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Application<\/th><th class=\"has-text-align-left\" data-align=\"left\">Recommended Pump<\/th><th class=\"has-text-align-left\" data-align=\"left\">Key Specification<\/th><\/tr><\/thead><tbody><tr><td>Rich electrolyte circulation<\/td><td>FEP\/PFA-lined centrifugal<\/td><td>Zero metal leaching; VFD control<\/td><\/tr><tr><td>Spent electrolyte return<\/td><td>FEP\/PFA-lined centrifugal<\/td><td>Same model for spare parts commonality<\/td><\/tr><tr><td>Acid mist scrubbing<\/td><td>PP or PVDF centrifugal<\/td><td>Lower cost for non-product-contact<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Engineers at Changyu Pump recommend:<\/strong>&nbsp;For all electrolyte-contact pumps, specify FEP or PFA fluoroplastic-lined centrifugal pumps. Standard stainless steel will leach trace metals and should not be used for EW electrolyte service.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">6. Changyu Pump&#8217;s Copper SX-EW Slurry Pump Solutions<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Three pump series serve copper SX-EW applications:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">SX-EW Pump Selection<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">SX-EW Stage<\/th><th class=\"has-text-align-left\" data-align=\"left\">Application<\/th><th class=\"has-text-align-left\" data-align=\"left\">Series<\/th><th class=\"has-text-align-left\" data-align=\"left\">Key Feature<\/th><\/tr><\/thead><tbody><tr><td>Leaching<\/td><td>PLS \/ Raffinate<\/td><td>UHB Series<\/td><td>UHMW-PE lined; abrasion + acid resistant<\/td><\/tr><tr><td>SX Organic Phase<\/td><td>Organic transfer<\/td><td>CQZ Series<\/td><td>Sealless magnetic drive; zero leak; ATEX\/IECEx<\/td><\/tr><tr><td>SX \/ EW Electrolyte<\/td><td>Rich \/ Spent electrolyte<\/td><td>CYB-ZKJ Series<\/td><td>FEP\/PFA-lined; zero metal leaching<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">UHB Series \u2014 UHMW-PE Lined Pump for PLS and Raffinate<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Steel-reinforced UHMW-PE lining provides optimal acid and abrasion resistance. Semi-open impeller handles fine solids. Replaceable wear liners extend casing life.<\/p>\n\n\n<style>.kb-image6472_e51214-19 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<figure class=\"wp-block-kadence-image kb-image6472_e51214-19 size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/changyupump.com\/wp-content\/uploads\/2025\/10\/UHB-Type-UHMWPE-Corrosion-Resistant-Pump.webp\" alt=\"UHB Series \u2014 UHMW-PE Lined Pump for PLS and Raffinate\" class=\"kb-img wp-image-1504\" srcset=\"https:\/\/changyupump.com\/wp-content\/uploads\/2025\/10\/UHB-Type-UHMWPE-Corrosion-Resistant-Pump.webp 800w, https:\/\/changyupump.com\/wp-content\/uploads\/2025\/10\/UHB-Type-UHMWPE-Corrosion-Resistant-Pump-300x225.webp 300w, https:\/\/changyupump.com\/wp-content\/uploads\/2025\/10\/UHB-Type-UHMWPE-Corrosion-Resistant-Pump-768x576.webp 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Parameter<\/th><th class=\"has-text-align-left\" data-align=\"left\">Specification<\/th><\/tr><\/thead><tbody><tr><td>Flow rate<\/td><td>3\u20132,600 m\u00b3\/h<\/td><\/tr><tr><td>Head<\/td><td>5\u2013100 m<\/td><\/tr><tr><td>Temperature<\/td><td>-20\u00b0C to 90\u00b0C<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/changyupump.com\/product\/chemical-horizontal-slurry-pump\/\" target=\"_blank\" rel=\"noreferrer noopener\">View UHB Series \u2192<\/a><\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"UHB series corrosion-resistant and wear-resistant slurry pump product introduction\" width=\"720\" height=\"405\" src=\"https:\/\/www.youtube.com\/embed\/kSUWPxICDvE?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">CQZ Series \u2014 Magnetic Drive Pump for Organic Phase<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Sealless magnetic drive eliminates mechanical seal. FEP\/PFA lining resists kerosene and oxime reagents. ATEX\/IECEx motors available.<\/p>\n\n\n<style>.kb-image6472_e7f707-2e .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<figure class=\"wp-block-kadence-image kb-image6472_e7f707-2e size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/changyupump.com\/wp-content\/uploads\/2025\/10\/CQZ-Stainless-Steel-Self-Priming-Magnetic-Drive-Pump-3.webp\" alt=\"CQZ Series \u2014 Magnetic Drive Pump for Organic Phase\" class=\"kb-img wp-image-1773\" srcset=\"https:\/\/changyupump.com\/wp-content\/uploads\/2025\/10\/CQZ-Stainless-Steel-Self-Priming-Magnetic-Drive-Pump-3.webp 800w, https:\/\/changyupump.com\/wp-content\/uploads\/2025\/10\/CQZ-Stainless-Steel-Self-Priming-Magnetic-Drive-Pump-3-300x225.webp 300w, https:\/\/changyupump.com\/wp-content\/uploads\/2025\/10\/CQZ-Stainless-Steel-Self-Priming-Magnetic-Drive-Pump-3-768x576.webp 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Parameter<\/th><th class=\"has-text-align-left\" data-align=\"left\">Specification<\/th><\/tr><\/thead><tbody><tr><td>Flow rate<\/td><td>3\u2013800 m\u00b3\/h<\/td><\/tr><tr><td>Head<\/td><td>12.5\u2013130 m<\/td><\/tr><tr><td>Temperature<\/td><td>-120\u00b0C to 320\u00b0C<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/changyupump.com\/product\/cqz-stainless-steel-self-priming-magnetic-drive-pump\/\" target=\"_blank\" rel=\"noreferrer noopener\">View CQZ Series \u2192<\/a><\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"CQZ Stainless Steel Magnetic Self-Priming Pump\" width=\"720\" height=\"405\" src=\"https:\/\/www.youtube.com\/embed\/1_WMXF8V2Gs?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">CYB-ZKJ Series \u2014 FEP\/PFA-Lined Pump for Electrolyte<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Fluoroplastic lining isolates electrolyte from metal casing, preventing metal ion leaching. Universal acid resistance across full electrolyte range.<\/p>\n\n\n<style>.kb-image6472_c3215a-52 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<figure class=\"wp-block-kadence-image kb-image6472_c3215a-52 size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/changyupump.com\/wp-content\/uploads\/2025\/10\/CYB-ZKJ-Series-Corrosion-Resistant-Horizontal-Slurry-Pump.webp\" alt=\"CYB-ZKJ Series \u2014 FEP\/PFA-Lined Pump for Electrolyte\" class=\"kb-img wp-image-1770\" srcset=\"https:\/\/changyupump.com\/wp-content\/uploads\/2025\/10\/CYB-ZKJ-Series-Corrosion-Resistant-Horizontal-Slurry-Pump.webp 800w, https:\/\/changyupump.com\/wp-content\/uploads\/2025\/10\/CYB-ZKJ-Series-Corrosion-Resistant-Horizontal-Slurry-Pump-300x225.webp 300w, https:\/\/changyupump.com\/wp-content\/uploads\/2025\/10\/CYB-ZKJ-Series-Corrosion-Resistant-Horizontal-Slurry-Pump-768x576.webp 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Parameter<\/th><th class=\"has-text-align-left\" data-align=\"left\">Specification<\/th><\/tr><\/thead><tbody><tr><td>Flow rate<\/td><td>3\u20132,600 m\u00b3\/h<\/td><\/tr><tr><td>Head<\/td><td>5\u2013100 m<\/td><\/tr><tr><td>Temperature<\/td><td>-80\u00b0C to 120\u00b0C<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/changyupump.com\/product\/corrosive-chemical-transfer-pump\/\" target=\"_blank\" rel=\"noreferrer noopener\">View CYB-ZKJ Series \u2192<\/a><\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"CYB ZKJ series corrosive chemical transfer pumps\" width=\"720\" height=\"405\" src=\"https:\/\/www.youtube.com\/embed\/d4yelav6a78?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">7. Case Study of Copper SX-EW Slurry Pump: Solving a PLS Pump Wear Failure<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A copper SX-EW plant in South America used 316L stainless steel centrifugal pumps for PLS transfer. The PLS carried 2 g\/L copper in sulfuric acid at pH 1.8 with fine ore particles.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Within four months, pump casings and impellers showed severe wear. Impeller wear rings eroded, reducing flow by 30%. Mechanical seals failed every 6\u20138 weeks from solids intrusion. Each pump required rebuilding three times per year.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Root cause analysis confirmed that 316L had insufficient hardness to resist fine ore particle erosion. The combined erosion-corrosion mechanism made 316L uneconomical.<\/p>\n\n\n<style>.kb-image6472_45847c-14 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<figure class=\"wp-block-kadence-image kb-image6472_45847c-14 size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/changyupump.com\/wp-content\/uploads\/2026\/05\/Case-Study-of-High-Solids-Slurry-Pump.webp\" alt=\"Case Study of Copper SX-EW Slurry Pump\" class=\"kb-img wp-image-5146\" srcset=\"https:\/\/changyupump.com\/wp-content\/uploads\/2026\/05\/Case-Study-of-High-Solids-Slurry-Pump.webp 1000w, https:\/\/changyupump.com\/wp-content\/uploads\/2026\/05\/Case-Study-of-High-Solids-Slurry-Pump-300x225.webp 300w, https:\/\/changyupump.com\/wp-content\/uploads\/2026\/05\/Case-Study-of-High-Solids-Slurry-Pump-150x113.webp 150w, https:\/\/changyupump.com\/wp-content\/uploads\/2026\/05\/Case-Study-of-High-Solids-Slurry-Pump-768x576.webp 768w, https:\/\/changyupump.com\/wp-content\/uploads\/2026\/05\/Case-Study-of-High-Solids-Slurry-Pump-16x12.webp 16w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Changyu Pump replaced the 316L pumps with UHB Series UHMW-PE lined pumps. The UHMW-PE lining provided acid resistance equal to or exceeding 316L, with significantly superior abrasion resistance. External mechanical seal flush eliminated solids intrusion.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Two years after replacement: zero casing or impeller replacements. Mechanical seal life extended from 6\u20138 weeks to over 18 months. The plant standardized on UHB Series for all PLS and raffinate applications.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Key takeaway<\/strong>: For PLS and raffinate in copper SX-EW, stainless steel is not the optimal material. UHMW-PE lined pumps provide both chemical resistance and abrasion resistance for continuous leaching operations.<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">FAQs about Copper SX-EW Slurry Pumps<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q: What pump type is recommended for PLS transfer in copper SX-EW?<\/strong><br>A: UHMW-PE lined centrifugal pumps provide the optimal combination of sulfuric acid resistance and abrasion resistance. High-chrome alloy pumps are an alternative for coarse solids.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q: Can I use stainless steel pumps for copper SX-EW?<\/strong><br>A: For PLS and raffinate, 316L is not recommended \u2014 combined acid and solids cause rapid erosion-corrosion. For EW electrolyte, stainless steel is not recommended due to metal ion leaching.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q: Why are magnetic drive pumps used for SX organic phase?<\/strong><br>A: The organic phase is flammable, expensive, and VOC-regulated. Sealless magnetic drive pumps eliminate the mechanical seal, preventing fire hazard and reagent loss.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q: What material prevents metal ion contamination in EW electrolyte?<\/strong><br>A: FEP or PFA fluoroplastic-lined pumps provide zero metal ion leaching, protecting cathode purity.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q: How do I size a PLS pump for heap leach?<\/strong><br>A: Size for maximum PLS flow plus 15\u201320% margin with VFD control. Install multiple pumps in parallel for larger operations.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Changyu Pump Engineer&#8217;s Avoidance Checklist<\/h2>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>Do not specify 316L for PLS or raffinate \u2014 combined acid and solids erosion destroys pumps within months.<\/li>\n\n\n\n<li>Specify sealless magnetic drive pumps for all SX organic phase service.<\/li>\n\n\n\n<li>Use FEP\/PFA-lined pumps for all EW electrolyte contact to protect cathode purity.<\/li>\n\n\n\n<li>Protect PLS pump seals with external flush or closed-loop barrier fluid system.<\/li>\n\n\n\n<li>Specify ATEX- or IECEx-certified motors for SX building pumps.<\/li>\n\n\n\n<li>Size PLS pumps with VFD control for variable flow conditions.<\/li>\n\n\n\n<li>Keep spare impellers, wear rings, and mechanical seals in inventory.<\/li>\n\n\n\n<li>Verify material compatibility with the specific organic reagent used in your plant.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A copper SX-EW plant depends on pumps matched to each process stage. Leaching requires UHMW-PE lined pumps that resist both acid and abrasion. Solvent extraction demands sealless magnetic drive pumps that eliminate organic leaks. Electrowinning requires fluoroplastic-lined pumps that protect cathode purity.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The cost of the wrong pump is measured in lost production, safety incidents, and degraded product value. Correct specification at each stage is an investment in reliability, safety, and copper quality.<\/p>\n\n\n<style>.kb-image6472_f983b8-8f .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<figure class=\"wp-block-kadence-image kb-image6472_f983b8-8f size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/changyupump.com\/wp-content\/uploads\/2026\/05\/TEFLON-Lined-Magnetic-Pump-6.webp\" alt=\"factory of Copper SX-EW Slurry Pump: Changyu Pump\" class=\"kb-img wp-image-5609\" srcset=\"https:\/\/changyupump.com\/wp-content\/uploads\/2026\/05\/TEFLON-Lined-Magnetic-Pump-6.webp 1200w, https:\/\/changyupump.com\/wp-content\/uploads\/2026\/05\/TEFLON-Lined-Magnetic-Pump-6-300x169.webp 300w, https:\/\/changyupump.com\/wp-content\/uploads\/2026\/05\/TEFLON-Lined-Magnetic-Pump-6-1024x576.webp 1024w, https:\/\/changyupump.com\/wp-content\/uploads\/2026\/05\/TEFLON-Lined-Magnetic-Pump-6-150x84.webp 150w, https:\/\/changyupump.com\/wp-content\/uploads\/2026\/05\/TEFLON-Lined-Magnetic-Pump-6-768x432.webp 768w, https:\/\/changyupump.com\/wp-content\/uploads\/2026\/05\/TEFLON-Lined-Magnetic-Pump-6-18x10.webp 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/changyupump.com\/contacts\/\" target=\"_blank\" rel=\"noreferrer noopener\">Contact Changyu Pump for a free technical assessment \u2192<\/a><\/p>\n\n\n<div class=\"wp-block-kadence-advanced-form wp-block-kadence-advanced-form1246-cpt-id kb-adv-form-label-style-normal kb-adv-form-input-size-standard kb-form-basic-style\"><form id=\"kb-adv-form-1246-cpt-id\" class=\"kb-advanced-form\" method=\"post\">\n<style>.kb-row-layout-id16_395842-3c > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id16_395842-3c > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id16_395842-3c > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;grid-template-columns:repeat(2, minmax(0, 1fr));}.kb-row-layout-id16_395842-3c > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){.kb-row-layout-id16_395842-3c > .kt-row-column-wrap{grid-template-columns:repeat(2, minmax(0, 1fr));}}@media all and (max-width: 767px){.kb-row-layout-id16_395842-3c > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id16_395842-3c alignnone wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-2-columns kt-row-layout-equal kt-tab-layout-inherit kt-mobile-layout-row kt-row-valign-top\">\n<style>.kadence-column16_3a38e5-5d > .kt-inside-inner-col,.kadence-column16_3a38e5-5d > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column16_3a38e5-5d > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column16_3a38e5-5d > .kt-inside-inner-col{flex-direction:column;}.kadence-column16_3a38e5-5d > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column16_3a38e5-5d > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column16_3a38e5-5d{position:relative;}@media all and (max-width: 1024px){.kadence-column16_3a38e5-5d > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column16_3a38e5-5d > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column16_3a38e5-5d\"><div class=\"kt-inside-inner-col\"><div class=\"kb-adv-form-field kb-adv-form-text-type-input kb-adv-form-infield-type-input kb-field124600b147-f8 wp-block-kadence-advanced-form-text\"><label class=\"kb-adv-form-label\" for=\"field124600b147-f8\">Name<\/label><input name=\"field00b147-f8\" id=\"field124600b147-f8\" data-label=\"Name\" type=\"text\" placeholder=\"\" value=\"\" data-type=\"text\" class=\"kb-field kb-text-field\" data-required=\"no\" \/><\/div><\/div><\/div>\n\n\n<style>.kadence-column16_be3802-0b > .kt-inside-inner-col,.kadence-column16_be3802-0b > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column16_be3802-0b > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column16_be3802-0b > .kt-inside-inner-col{flex-direction:column;}.kadence-column16_be3802-0b > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column16_be3802-0b > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column16_be3802-0b{position:relative;}@media all and (max-width: 1024px){.kadence-column16_be3802-0b > 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High-chrome alloy pumps are an alternative for coarse solids.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use stainless steel pumps for copper SX-EW?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For PLS and raffinate, 316L is not recommended \u2014 combined acid and solids cause rapid erosion-corrosion. For EW electrolyte, stainless steel is not recommended due to metal ion leaching.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Why are magnetic drive pumps used for SX organic phase?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The organic phase is flammable, expensive, and VOC-regulated. Sealless magnetic drive pumps eliminate the mechanical seal, preventing fire hazard and reagent loss.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What material prevents metal ion contamination in EW electrolyte?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"FEP or PFA fluoroplastic-lined pumps provide zero metal ion leaching, protecting cathode purity.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I size a PLS pump for heap leach?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Size for maximum PLS flow plus 15\u201320% margin with VFD control. Install multiple pumps in parallel for larger operations.\"\n      }\n    }\n  ]\n}\n<\/script>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Quick Answer A&nbsp;Copper SX-EW slurry pump&nbsp;serves the hydrometallurgical process that extracts copper from oxide ores through sulfuric&#8230;<\/p>","protected":false},"author":2,"featured_media":6479,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[12],"tags":[],"class_list":["post-6472","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"taxonomy_info":{"category":[{"value":12,"label":"Blog"}]},"featured_image_src_large":["https:\/\/changyupump.com\/wp-content\/uploads\/2026\/07\/Copper-SX-EW-Slurry-Pump-Acid-Leach-Solvent-Extraction-Guide.webp",1000,750,false],"author_info":{"display_name":"Changyu_","author_link":"https:\/\/changyupump.com\/fr\/author\/changyu_\/"},"comment_info":0,"category_info":[{"term_id":12,"name":"Blog","slug":"blog","term_group":0,"term_taxonomy_id":12,"taxonomy":"category","description":"","parent":0,"count":157,"filter":"raw","cat_ID":12,"category_count":157,"category_description":"","cat_name":"Blog","category_nicename":"blog","category_parent":0}],"tag_info":false,"_links":{"self":[{"href":"https:\/\/changyupump.com\/fr\/wp-json\/wp\/v2\/posts\/6472","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/changyupump.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/changyupump.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/changyupump.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/changyupump.com\/fr\/wp-json\/wp\/v2\/comments?post=6472"}],"version-history":[{"count":7,"href":"https:\/\/changyupump.com\/fr\/wp-json\/wp\/v2\/posts\/6472\/revisions"}],"predecessor-version":[{"id":6482,"href":"https:\/\/changyupump.com\/fr\/wp-json\/wp\/v2\/posts\/6472\/revisions\/6482"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/changyupump.com\/fr\/wp-json\/wp\/v2\/media\/6479"}],"wp:attachment":[{"href":"https:\/\/changyupump.com\/fr\/wp-json\/wp\/v2\/media?parent=6472"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/changyupump.com\/fr\/wp-json\/wp\/v2\/categories?post=6472"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/changyupump.com\/fr\/wp-json\/wp\/v2\/tags?post=6472"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}