Large-diameter Impeller Slurry Pump

The large-diameter impeller slurry pump is the advanced form of heavy-duty horizontal centrifugal slurry pumps. Its core features are a large-diameter impeller (Ø510 - 1370 mm) + low rotational speed operation (200 - 1140 r/min) + wide internal passage - by increasing the impeller diameter to reduce the peripheral velocity around the impeller, thereby reducing wear and extending the lifespan of the flow components, and at the same time, the wide flow channel volute allows large particles to pass through smoothly.
This product adopts a double pump shell structure (outer layer of ductile iron/cast steel for pressure-bearing + inner layer of high-chromium alloy replaceable wear-resistant lining), and the flow components such as the impeller, volute, and front and rear guard plates are uniformly made of A05 high-chromium alloy (27% Cr, HRC 60+) vacuum cast with zero gas pores, or upgraded to A49 (28% high-chromium low-carbon, corrosion-resistant), Cr30, or bimetallic composite. The discharge outlet of the entire machine is 360° adjustable, and the shaft seal can be selected from three options (packing/auxiliary impeller/mechanical seal), allowing multi-stage series connection to meet high head and long-distance transportation requirements.

Large-diameter impeller, low-speed wear-resistant - Impeller diameter: Ø510 - 1370 mm. Operating at low speed of 200 - 1140 r/min, the peripheral speed of the impeller is significantly reduced, and the wear life is extended by 30 - 50%, and the MTBM (Mean Time Between Maintenance) is significantly improved.
Wide internal channel, large particles through - Wide flow channel volute + large-diameter impeller. The maximum particle size is up to 135 mm (16×14TU-ZH type). Coarse particles, gravel, shells can pass directly without blocking or jamming.
A05 high-chromium vacuum casting, HRC 60+ - The flow components are vacuum-cast with 27% high-chromium alloy without gas pores, with a hardness of HRC 60+, excellent resistance to particle erosion, and are 3 - 5 times the lifespan of ordinary cast iron.
Double pump housing structure, shell liner separation - Outer layer QT500-7/ZG230-450 pressure-bearing, inner layer high-chromium lining for wear resistance; when the inner liner is worn through, only the wear-resistant components need to be replaced, and the outer layer shell and the pump have the same lifespan (10+ years), reducing maintenance costs by 60%.

The key feature of the large-diameter impeller slurry pump is "high abrasion + coarse particles + high concentration + large flow rate", and the core scenarios are as follows:
Large-scale metal mines (maximum single unit):
Mill discharge: Ball mill / semi-autogenous mill discharge, high concentration, coarse particles, strong abrasion, large-diameter impeller with low rotational speed and wear resistance
Cyclone feed: High head, stable flow rate, 16/14LA, 20/18LA as the main force
Long-distance transportation of tailings: Series operation, head of 100-200 m, distance of 2-10 km, Cr30 high-chrome flow passage components
Coarse sand/tailings transportation: Through particle size up to 135 mm (16×14TU-ZH)
High-concentration transportation of concentrate: Iron/copper/gold concentrate, concentration of 30-60 wt%
Coal washing plant
Heavy medium suspension circulation, coal slurry lifting
Long-distance transportation of high-concentration slurry (heavy medium density 1.3-2.0)
Thermal power plant
Water-based ash removal: Bottom ash, fly ash (Mohs hardness 5-7), high-concentration slurry
FGD desulfurization: Lime slurry / gypsum slurry, A49 (Cr30) material resistant to Cl⁻ corrosion
The 200ZBG-760 model performs exceptionally well in the long-distance transportation of the ash removal system in thermal power plants

Full-process modern production base: The company has built an intelligent complete production area by itself, equipped with 126 main production equipment and 34 sets of specialized precision processing devices, covering all production processes of the entire industrial chain: model design and mold making, pump body casting, heat treatment, precision machining, complete machine assembly, and complete machine performance testing, all completed in one step. The production end adopts CAD computer-aided design and CAE engineering simulation technology, which can achieve three-dimensional modeling, assembly interference verification, stress analysis, and CFD fluid dynamics simulation, precisely optimizing the pump body operating performance; self-developed optimized impeller structure significantly extends the equipment service life and effectively reduces the customer's later operation and maintenance costs. The annual casting capacity of the factory can reach several thousand tons, and all raw materials are selected from high-grade wear-resistant materials from domestic first-line manufacturers; the self-developed slurry pump has a service life 2-5 times longer than similar conventional products in the market, with outstanding wear resistance and durability advantages. The factory is equipped with two sets of high-pressure and low-pressure pump testing workstations, and all finished products undergo full inspection before leaving the factory, achieving a 100% qualified rate for factory output.

Q: Is it better to have a larger impeller diameter?
A: Not necessarily. An increase in impeller diameter → the rotational speed must be reduced (otherwise the peripheral speed will explode) → the flow rate decreases linearly with the rotational speed. The correct selection logic is: use the lowest reasonable rotational speed to meet the flow rate and head requirements, and select the impeller diameter to be "just right to allow the rotational speed to fall within the comfortable range of 200-1140 r/min". Blindly choosing a larger impeller will result in investment waste and installation difficulties.
Q: What is the relationship between the LA series and the AH series?
A: The LA series is a naming system for heavy-duty slurry pumps (such as 8/6LA, 10/8LA, 16/14LA, 20/18LA), with impeller diameters ranging from 510 to 1370 mm; the AH series (such as 8/6 AH, 10/8 AH, 16/14 TU-AH) is the original factory naming system of Warman. The two series correspond in size range, and the LA series is 100% compatible with the installation dimensions of the AH series, allowing for upgrade replacement.
Q: What level of pump is 200ZBG-760?
A: 200ZBG-760 is a domestic large-scale high-head single-stage single-suction centrifugal slurry pump with an impeller diameter of 760 mm, a flow rate of 800-1000 m³/h, a head of 95 m, an axial power of 450 kW, a double pump shell structure, and flow passage components of Cr27/Cr30A high-chrome alloy. It belongs to the medium-large segment of large-diameter impeller slurry pumps and is suitable for main process slurry transportation in metal mines, long-distance tailings pressurized discharge, power plant ash removal, dredging and reclamation, etc.
Q: Can it be operated in series?
A: Yes, and it is the standard usage of large-diameter impeller slurry pumps. The single pump head is 68-150 m, and when operated in series, it can reach over 200 m, meeting the requirements for long-distance (2-10 km) high-head transportation of tailings in tailings ponds. The series operation scheme requires verification of shaft system strength and shaft seal capacity. It is recommended to be confirmed by the manufacturer's technical support.

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