The 6/4 AH slurry pump is a medium-sized heavy-duty horizontal mining slurry pump, divided into two mainstream sub-models: 6/4D-AH and 6/4E-AH. Widely applied for ball mill discharge, hydrocyclone feeding, flotation concentrate circulation and medium-distance tailings delivery, this model balances moderate flow range, strong solid passing capacity and flexible power matching. Proper understanding of its complete technical parameters and scientific site matching can avoid low efficiency, severe abrasion and frequent vibration faults. This article sorts out full official performance parameters, structural configuration, two material schemes of interchangeable slurry pump wear parts, and detailed working condition matching standards for mineral processing plants. XO Slurry Pump (www.xoslurrypump.com) supplies fully interchangeable 6/4D-AH & 6/4E-AH pumps and standardized high chrome alloy pump parts for global mining projects.

Basic Structural & Core Technical Parameters of 6/4 AH Slurry Pump

6/4 AH represents 6-inch suction inlet and 4-inch discharge outlet horizontal AH heavy-duty slurry pump. The two variants differ in maximum matching power, flow-head coverage and applicable slurry concentration, which is the core basis for site model selection.

Shared General Structural Parameters

• Inlet diameter: 150mm (6 inch), Outlet diameter: 100mm (4 inch)

• Max allowable passing solid particle: 44–51mm

• Standard impeller diameter: 365mm, 5 closed blades

• Shaft diameter: 65mm, short cantilever large-diameter shaft to reduce deflection and vibration

• Three optional shaft seals: expeller dynamic seal, packing seal, mechanical seal

• Drive modes: CV/ZV belt drive, CR direct coupling, VFD variable frequency drive

Distinct Performance Parameters of 6/4D-AH & 6/4E-AH

1. 6/4D-AH: Max matching power 60kW, flow range 144–360 m³/h, head range 12–56m, suitable for medium-low concentration slurry (20%–45% solid weight)

2. 6/4E-AH: Max matching power 120kW, flow range 162–396 m³/h, head range 10–61m, upgraded bearing frame for high-concentration heavy slurry (45%–70% solid weight)

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Image 1: Complete 6/4 AH Series Slurry Pump Finished Unit (6/4D-AH & 6/4E-AH Side-by-Side Display) Image Name: 6-4-ah-slurry-pump-finished-unit.jpg Alt Text: Two finished 6/4D-AH and 6/4E-AH mining slurry pump units showing overall structure for mineral processing cyclone feed sites

Two Mainstream Slurry Pump Wear Parts Material Configurations for 6/4 AH

The service life of 6/4 AH pump directly depends on matched wet-end components; two mature material systems cover all mining media conditions:

1. Cr27 High Chrome Alloy Pump Parts (Metal Lined Model: 6/4D-AH / 6/4E-AH)

Hardness HRC58–62, excellent anti-cutting abrasion performance. Ideal for high-hardness coarse ore slurry including spodumene, quartz gold ore, iron ore grinding discharge and high-density tailings pipelines. It can withstand long-term impact of large solid particles without rapid thinning.

2. Molded Natural Rubber Lined Wear Parts (Rubber Model: 6/4D-AHR / 6/4E-AHR)

Elastic shock-absorbing design, resistant to mild acid and alkali flotation reagents. Suitable for fine particle froth concentrate, low-abrasion coal washing slurry and light mine dewatering. Not recommended for slurry containing coarse hard gangue.

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Image 2: Disassembled Full Set of 6/4 AH Slurry Pump Wear Parts (Impeller, Liner, Throat Bush) Image Name: 6-4-ah-wear-parts-disassembly.jpg Alt Text: Separated high chrome alloy impeller, liner and throat bush slurry pump wear parts specially produced for 6/4 AH mining slurry pump 6/4 AH Pump Sectional Explosion Drawing

6/4 AH Pump Model & Site Working Condition Matching Comparison Table

Key Site Matching Rules for 6/4 AH Series Slurry Pump

1. Model Selection Based on Slurry Solid Concentration

• Solid content ≤45% & fine particles: Choose 6/4D-AH series, rubber wear parts optional

• Solid content 45%–70% & coarse hard ore: Must select heavy-duty 6/4E-AH with high chrome alloy pump parts

2. Hydraulic Matching Principle: Operate Near Best Efficiency Point (BEP)

Avoid long-term operation at flow far higher or lower than rated parameters. Off-BEP running will amplify hydraulic turbulence, accelerate abrasion of all slurry pump wear parts and trigger persistent pump vibration. Configure VFD drive if slurry flow fluctuates frequently on site.

3. Installation Site Layout Requirements

1. Set a stable thick concrete foundation to reduce resonance vibration during continuous 24h operation

2. Shorten suction pipeline as much as possible, reduce elbows to prevent cavitation

3. Reserve 1–1.5m maintenance space on pump side for fast replacement of impeller and liner wear parts

4. Multiple 6/4E-AH pumps can be connected in series to realize long-distance tailings high-lift delivery

Common Costly Matching Mistakes to Avoid

1. Equip rubber lined wear parts for quartz-rich grinding discharge: Sharp hard particles tear rubber liners within 1–2 months, raising frequent spare part shutdown loss

2. Select 6/4D-AH for high-concentration coarse ore circuits: Insufficient power leads to overload motor heating and rapid bearing damage

3. Ignore impeller-liner clearance regular adjustment: Excessive internal gap increases slurry recirculation, doubling wear consumption of wet-end components

Conclusion

The 6/4 AH slurry pump includes two core specifications 6/4D-AH and 6/4E-AH with clear differentiated parameter ranges for different mining production capacities. Reasonable matching of high chrome alloy pump parts or rubber slurry pump wear parts according to slurry particle hardness and solid concentration is the key to extending pump service life and cutting mine maintenance costs. As a universal medium-size mining slurry pump, it perfectly fits cyclone feeding, grinding discharge, flotation circulation and tailings transportation in gold, lithium, copper and coal washing concentrators. Standardized parameter selection and standardized site installation can fully release stable hydraulic performance of the 6/4 AH series pump.XO Slurry Pump provides complete 6/4D-AH and 6/4E-AH mining slurry pump units and full interchangeable high chrome alloy wear-resistant spare parts. Visit www.xoslurrypump.com to obtain one-on-one site parameter calculation and customized pump matching technical solutions.