AH High Chrome Slurry Pump

The AH high-chrome slurry pump is a horizontal, single-stage, single-suction, cantilever, centrifugal, double-pump-shell, separate-structure heavy erosion slurry pump. This product features an outer pump shell made of ductile iron or gray cast iron, which does not come into contact with the slurry and only bears the pressure; the inner layer is equipped with replaceable high-chrome wear-resistant alloy liners or rubber liners. The liners can be replaced separately when worn out, without the need for the entire pump to be replaced, significantly reducing maintenance costs. The impeller, sleeve, guard plate, throat liner, etc., are made of A05 high-chrome white iron (KmTBCr26), Cr27, Cr28, Cr30A (A49), etc., with hardness ranging from HRC58 to 65. The over-flow wall thickness is thickened to resist sand and stone impact and resist slurry erosion. The continuous operation life of this pump is much longer than that of ordinary slurry pumps.

Copper core motors have powerful power.
The copper-made motor core runs smoothly, with low noise and low temperature rise, stable performance output, and long service life.
Stable performance
Strong power, smooth operation, high efficiency, wide application, convenient to use
Reliable quality
Large flow rate, long distance, no clogging, good toughness, high strength, long service life

Dual pump housing split structure - Outer layer made of ductile iron or gray cast iron for pressure-bearing, inner layer with high-chromium alloy/rubber replaceable lining. If the inner lining wears out, only the wear-resistant components need to be replaced. The pump housing and the pump share the same lifespan.
High-chromium white iron flow components, HRC58-65 - A05 (KmTBCr26), A07 (KmTBCr15Mo), A49 (Cr30), Cr27, Cr28, Cr30A - Full material range, hardness HRC58-65, the anti-wear life is 3-5 times that of ordinary cast iron.
Wide flow channel impeller, large particles can pass through - The number of impeller blades is small (usually 2-8), the flow channel is unobstructed, effectively passing larger solid particles, and not prone to clogging; the impeller is equipped with front and rear back blades to reduce medium leakage and optimize the shaft seal lifespan.
Multi-stage parallel connection - In the pump's maximum allowable working pressure range, multiple stages can be connected in parallel to meet the requirements of long-distance, high-yield tail ore transportation in mines.
Three types of shaft seals - Auxiliary impeller seal (no leakage, no shaft seal water), packing seal, modular mechanical seal, suitable for different working conditions.
Overall removable bearing assembly - Detachable box-type lubricated bearing assembly, can be replaced with the base, or the lubricated heavy-load bearing assembly can be replaced for oil lubrication, maintenance is convenient.

The key feature of the AH high-chromium slurry pump is "continuous transportation of highly abrasive and high-concentration slurry", and the core scenario is:

Feed to cyclone: High head, stable flow feed
Feed for flotation / bottom flow: Coarse sand, middlings, concentrate slurry transportation
Tailings transportation: Long distance, high head, multi-stage series connection, distance 2-10 km
Transportation of concentrate slurry: Iron, copper, gold, lead-zinc, nickel, lithium and other slurries
Circulation of heavy medium suspension: Heavy medium system of coal preparation plant
Circulation of heavy medium suspension, coal slurry lifting, coal slurry transportation
Input of coal preparation, tailings recovery, coal gangue slurry transportation
Metallurgy and construction materials
High-temperature blast furnace slag, steel slag slurry, red mud, etc. materials with strong erosion transportation
Transportation of cement raw material slurry, sand and stone material slurry
Transportation of smelting slag, electrolytes, red mud (aluminum production)
Dredging and environmental protection
River dredging, sand mining, river sediment transportation
Transportation of chemical corrosion waste residue, sand washing slurry
Phosphate slurry transportation (phosphorus chemical industry)

CZME is a world-class manufacturer of high-performance pumping solutions, serving industries such as mining, construction, environmental protection, and water treatment. We specialize in the production of Slurry pumps, Dredge pumps, Desulfurization pump, Marine dredging pumps, and other industrial pumps designed for handling solid-laden, highly abrasive, and corrosive slurries. Our expertise in slurry and wastewater management makes us a trusted partner for clients worldwide.

Q2: How to choose between high-chromium alloy Cr27 (A05) and rubber lining?
A: Based on the characteristics of the medium: ① High-chromium alloy Cr27 (A05) - Hardness ≥ 62 HRC, suitable for transporting coarse particles, high hardness, and highly abrasive slurry (such as iron ore slag, tailings, quartz sand, mill discharge), with an 8–10 times higher anti-corrosion performance than ordinary cast iron; however, its corrosion resistance is average and it is not suitable for strong acid and alkali media. ② Rubber lining - Suitable for transporting corrosive + non-angled abrasive slurries (such as chemical slurry, desulfurization slurry, corrosive mineral slurries with pH 3–12), the high elasticity of rubber can absorb fine particle impacts, and it can withstand acid and alkali corrosion; but the temperature limit is 65–85℃, and it is not suitable for large particles with sharp edges. Decision rule: If the main issue is abrasion and the particles are coarse and hard → choose high-chromium alloy; if there is both corrosion and abrasion, and the particles have no sharp edges → choose rubber lining.
Q3: How high a concentration of slurry can the Centrifugal Mining Pump handle? Can it be connected in series?
A: By weight concentration: ① Slurry for ash and coal → ≤ 45%; ② Slurry for minerals and heavy media → ≤ 60%. The standard configuration for medium temperature is ≤ 60℃, and special configurations can reach 110℃. The maximum intermittent passing particles are 82–254 mm (for AH series, it can handle large particles; for GH sand and gravel pumps, it specializes in large particles). The Centrifugal Mining Pump can be used in multi-stage series connection within the maximum allowable working pressure range, meeting the needs of long-distance, high-head pipeline transportation in mines - for example, for tailings long-distance transportation, 2–4 stages of series connection can be used, with a total head of up to 200–300 m. The single-stage head of the ZJ series is up to 133.7 m, the single-stage head of the HH series is 12–118 m, and after multi-stage series connection, it can meet higher head requirements.
Q4: How to choose among the three types of shaft seals (auxiliary impeller/felt packing/mechanical seal)?
A: ① Auxiliary impeller (Expeller) seal - Utilizes the rotation of the auxiliary impeller to generate reverse pressure to prevent slurry leakage, no external flushing water is required, suitable for dry operation conditions, and is the most commonly used shaft seal form in mining Centrifugal Mining Pumps; ② Felt packing (Gland Packing) seal - An economical and reliable conventional solution, suitable for standard maintenance procedures, requires continuous shaft seal water; ③ Mechanical seal - A zero-leakage solution for critical or chemical-related conditions, with certain requirements for slurry particle size. Selection principle: For conventional mining abrasion conditions, choose the auxiliary impeller seal (water-saving, can operate dry); for non-leakage chemical conditions, choose the mechanical seal; for economic solutions, choose the felt packing seal.

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