Three mainstream material categories for slurry pump wet-end components (impeller, casing liner, frame plate liner) at lithium mineral processing plants, classified by working condition matching:
1
Standard Working Conditions
Spodumene / Lepidolite | Neutral-Alkaline Slurry | pH 6–10 | Solid Particle ≤5 mm
High Chrome Cast Iron Cr26 / Cr28 (A05 Grade)
Preferred option, hardness HRC 58–62, outstanding abrasion resistance and impact resistance; ideal for grinding, classification and tailings transportation.
Rubber Lining (Natural Rubber / EPDM)
For medium-density slurry with fine particles ≤3 mm and operating temperature ≤80℃; superior wear and corrosion resistance with extended service life.
2
Acidic & Corrosive Conditions
pH < 4 | Slurry Containing Cl⁻ / SO₄²⁻ Ions
Duplex Stainless Steel 2205 / 2507
Balanced acid corrosion resistance and abrasion resistance, applicable to acid leaching, solvent stripping and other highly corrosive slurry processes.
Silicon Carbide (SiC) Ceramic
Exceptional wear & corrosion resistance with Mohs hardness 9; suited for fine-particle highly corrosive slurry, not recommended for large-particle impact load.
UHMWPE (Ultra-High-Molecular-Weight Polyethylene)
Excellent anti-corrosion property and low friction coefficient, designed for fine-grained acidic slurry.
3
Coarse Particle & Severe Abrasion Conditions
Particle Size > 5 mm | High Solid Concentration
High-Chrome Molybdenum Alloy (Cr26~28 with Molybdenum Additive)
Enhanced erosion resistance for gravity separation and coarse sand conveying service.
Ni-Hard Alloy
Good low-temperature toughness, comparable abrasion performance to high chrome iron with relatively higher cost.
Quick Material Selection Guide
Regular Grinding & Tailings Service
Cr26 (A05)
Best cost-performance
Acid Leaching & Corrosive Process
2205 Duplex Steel or SiC Ceramic
Fine-grain, Medium-density & Ambient-temp Slurry
Natural Rubber Lining
Customized Material Recommendation
To get tailored wet-end material solution, kindly provide technical parameters: flow rate, head, slurry density, pH value and slurry chemical composition.
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email: rita@ruitepump.com
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Post time: Jun-03-2026