In mining and coal preparation operations, the transportation of high-concentration slurry has always been a key factor restricting production efficiency. To address this industry challenge, the ZJ series mining slurry pumps developed by Lishengde Energy-Saving Pump Industry, with their excellent wear resistance and stable conveying capacity, have become important equipment for mining enterprises to extend equipment service life and reduce operation and maintenance costs.
- Unique Challenges in Coal Preparation Scenarios
Coal preparation plants need to handle high-wear slurry containing solid particles such as coal cinder and iron filings every day. Traditional pumping equipment often suffers from a significant drop in efficiency due to wear of flow-through components. Practical data from a large coal mine shows that the average service life of ordinary centrifugal pumps in coal preparation plants is less than 3 months, while the ZJ series mining slurry pumps have successfully broken through this bottleneck through their unique double-shell design.
- Core Breakthroughs in Wear-Resistant Technology
This series of pumps adopts impellers and guard plates made of high-chromium alloy material, with a hardness in the range of HRC58-62. Coupled with the double-stage flow structure design, a "combination of rigidity and flexibility" protection system is formed. Tests by the laboratory of China University of Mining and Technology show that when transporting coal slurry with a concentration of 35%, the wear rate of key components is 67% lower than that of traditional products.
- Intelligent Design Improves Operational Efficiency
The original flow channel optimization technology of the ZJ series mining slurry pumps reduces the turbulence effect during slurry passage by 40%, which not only improves the conveying efficiency but also reduces energy consumption. Test data shows that under the same working conditions, the motor load of this series of pumps is 15-20% less than that of conventional equipment, which can save about 120,000 yuan in electricity fees for medium-sized mines every year.
- Selection and Maintenance Suggestions
According to the geological characteristics of different mining areas, it is recommended to give priority to the following parameters: when the particle size exceeds 2mm, the SP type should be selected; when the particle size is in the range of 0.5-2mm, the YZ type submersible slurry pump can be chosen. In daily maintenance, regularly checking the impeller clearance (it is recommended to control it within 0.5-1mm) can extend the service life by 30%.
