نظرة عامة على المشروع
A lead-zinc smelting company experienced frequent failures in its filter press feeding system due to severe wear and corrosion of the existing slurry pump. The pumped medium contained high concentrations of abrasive solid particles and corrosive chemicals, resulting in repeated shutdowns, leakage, and excessive maintenance costs.
After technical discussions during the Chengdu Lead-Zinc Industry Conference, the customer agreed to replace the original equipment with one UHB-ZK UHMWPE slurry pump for on-site testing to verify its suitability for the application.
Customer Challenges
The filter press system was used to transfer corrosive lead-zinc slurry with a high solid content. The operating conditions created severe abrasion and chemical corrosion on the pump’s wetted parts.
The original slurry pump suffered from:
- Severe wear of pump casing and impeller
- Frequent blockage caused by solid particles
- تسرب مانع التسرب الميكانيكي
- Unstable operation and unexpected shutdowns
- Service life shorter than 30 days
The customer had to stop production 2–3 times per month for maintenance and replacement, causing significant production losses and high repair costs. In addition, slurry leakage created environmental compliance risks within the plant.
Recommended Solution
Based on the working conditions, we recommended the UHB-ZK UHMWPE slurry pump as a replacement solution for the filter press feeding application.
Why the UHB-ZK UHMWPE Slurry Pump Was Selected
1. UHMWPE Lined Flow Parts for Corrosion & Wear Resistance
The wetted components are manufactured with steel-lined UHMWPE (Ultra High Molecular Weight Polyethylene) material, providing excellent resistance to both abrasion and chemical corrosion.
The pump is suitable for slurry media containing solid particles and corrosive substances, making it ideal for lead-zinc ore slurry transfer applications.
2. Semi-Open Impeller Design
The semi-open impeller structure offers strong anti-clogging performance and allows stable transfer of high-density slurry containing suspended particles.
3. Low-Speed Cantilever Structure
The UHB-ZK pump adopts a horizontal single-stage single-suction cantilever centrifugal structure with low rotational speed, reducing wear rate and improving operational stability while lowering energy consumption and maintenance frequency.
ظروف التشغيل
| المعلمة | القيمة |
|---|---|
| معدل التدفق | 120 متر مكعب/ساعة |
| الرأس | 50 m |
| نوع المضخة | UHMWPE Slurry Pump |
| الهيكل | Horizontal Single-Stage Centrifugal Pump |
| المواد المبللة | Steel-Lined UHMWPE |
| نوع الطين | Corrosive Lead-Zinc Ore Slurry |
| المحتوى الصلب | ≤30% |
| درجة حرارة التشغيل | -20 درجة مئوية إلى 90 درجة مئوية |
Installation & Maintenance Recommendations
To ensure long-term stable operation, the following measures were implemented:
- Ensure stress-free alignment between the pump and pipeline during installation
- Avoid dry running and maintain slurry concentration within the design range
- Inspect seals and wetted components regularly
- Perform routine maintenance inspections every three months
- Remove accumulated solids to prevent blockage
Results After Replacement
After replacing the original equipment with the UHB-ZK UHMWPE slurry pump, the customer reported significant improvements in operational reliability and maintenance costs.
| البند | Before Replacement | After Replacement |
|---|---|---|
| Continuous Operating Cycle | ＜30 days | ＞180 days |
| Maintenance Frequency | 2–3 times/month | Reduced by 80% |
| Pump Blockage | Frequent | Eliminated |
| Leakage Issues | Frequent | None |
| معدل التآكل | Severe | Significantly Reduced |
| Annual Operating Cost | عالية | Reduced by ~70% |
The customer confirmed that the new slurry pump effectively solved the high failure rate problem while improving production continuity and reducing unplanned downtime.
Why UHMWPE Slurry Pumps Are Suitable for Mining Slurry Applications
Compared with conventional metal slurry pumps, UHMWPE slurry pumps provide a better balance of corrosion resistance, abrasion resistance, and anti-blocking performance in harsh chemical slurry environments.
They are widely used in:
- Lead-zinc smelting plants
- Wet-process metallurgy
- Mining slurry transfer systems
- Filter press feeding applications
- Chemical wastewater treatment
- Acidic slurry circulation systems
Product Showcase of Different Models in the UHB Series
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