High concentration, large particles, strong abrasion - Batch delivery of Kaiquan slurry pump to Angang Mining Dagushan filling project

In the wave of green mining construction, backfill mining technology has become a key path to achieve efficient resource utilization and ecological protection synergy. The Dagushan filling project of Ansteel Mining Group is facing harsh working conditions such as slurry solid content of over 50%, large particle size, strong abrasion, and long-distance transportation, which puts extremely high demands on the core equipment slurry pump.

With years of experience in the research and development of slurry pumps and precise adaptability to working conditions, Kaiquan has successfully won the bid for this project, providing a total of 29 slurry pumps at once: 17 units of 350KXZ-84 type, 6 units of KJ350-96 type, and 6 units of KZJ350-85 type. This number also set a record for Kaiquan's largest order under mine filling conditions.

Customized solution: Three models collaborate to solve transportation problems

In response to the high concentration, large particle size, and long-distance transportation characteristics of the Dagushan filling project, the Kaiquan technical team has customized an integrated transportation solution with the 350 series slurry pump as the core.

Each of the three models has its own focus: KJ350-96: with a super large flow design, the rated flow can reach 2500m ³/h, the head is 78m, and it is suitable for large displacement filling needs; 350KXZ-84 and KZJ350-85: precise head adaptation, matching different conveying sections' working conditions.

All pumps adopt heavy-duty horizontal structure, with increased impeller diameter and low-speed design, and use CFD multiphase flow simulation technology to optimize the volute flow channel, achieving equal lifespan operation of the flow passage components. Double pump casing design: The outer layer ensures structural strength, while the inner layer is equipped with replaceable high chromium alloy, allowing for flexible adaptation to different filling material characteristics.

Sealing and Material: Zero Leakage, Long Life

In response to the pressure gradient generated by long-distance series transportation, Kaiquan adopts a differentiated sealing scheme:

First stage pump: secondary impeller+packing seal combination, achieving zero leakage operation

Second stage pump: packing+high-pressure shaft seal water design, ensuring reliable sealing of high-pressure slurry

The material of the overcurrent component is customized ultra hard and wear-resistant KmTBCr27. After special heat treatment, the hardness reaches HRC60 or above, and the wear resistance is more than 10 times that of ordinary carbon steel. In actual operation, the average lifespan of the overcurrent components reaches 8-12 months, with some operating conditions exceeding 15 months, far exceeding the 3-6 months of ordinary slurry pumps.

At the same time, the pump set is equipped with a variable frequency speed regulating motor, which can adjust the operating parameters in real time according to the fluctuation of filling flow rate and slurry concentration. The power loss is reduced by 15% -20% compared to traditional fixed speed pumps.

Customer benefits: cost reduction, efficiency improvement, and continuous production

Kaiquan provides Ansteel Mining not only with equipment, but also with "customized products+full cycle integrated services". From on-site research and data collection in the early stage, to installation and commissioning, operation and maintenance guidance, and emergency spare parts supply, the entire chain is covered.

Up to now, the slurry pump has demonstrated excellent performance with low failure rate and high conveying efficiency, effectively avoiding production losses caused by unplanned shutdowns. Every year, it can save more than 30% of parts replacement and maintenance costs, achieving a dual improvement in economic and energy-saving benefits.

The smooth operation of the Dagushan filling project confirms the reliability and technological leadership of the Kaiquan slurry pump under high concentration and strong abrasion conditions. This benchmark case also provides a replicable equipment matching template for green mine filling operations.

Kaiquan, with its wear-resistant, efficient, and reliable slurry pump solution, assists the mining industry in its green transformation.