Volute Liners, Throatbushes & Liners
Wet-end contact parts manufactured in High Chrome, Rubber, and Polyurethane: volutes, throatbushes, and frame plate liner inserts for slurry pumps.
Wet-End Lot Ordering
In mining operations, wet-end contact parts are not purchased one by one. To keep pumps running at peak hydraulic efficiency and prevent unplanned stockouts, plants order balanced wet-end lots matched to component wear rates (for example: 5 impellers, 5 throatbushes, and 4 volute liners).
Available Materials & Components
| Liner Materials | 27% High Chrome (A05), Natural Rubber (R55), Polyurethane (U01), and Sintered Silicon Carbide (SiC ≥ 2200 HV) |
|---|---|
| Wet-End Components | Volute Liner, Throatbush (Cuello), Frame Plate Liner Insert, and Impeller |
| High Chrome | High-chrome white iron casting (≥ 650 HB) for mill discharge and coarse, sharp-edged particles |
| Rubber & Polyurethane | Compression-molded elastomers and tear-resistant polyurethane for fine particles, hydrocyclones, flotation, and corrosive slurries |
Sample Plant Lot Configuration
The throatbush and impeller operate with a tight front clearance and require more frequent replacement than the volute. Ordering in matched lots (e.g., 5 impellers + 5 throatbushes + 4 volutes) prevents pairing a new impeller with a worn throatbush.
Metallurgical Rule: Reinforced cutwater thickness. In slurries with oversize rocks over 12 mm avoid rubber; deploy heavy-section High Chrome A05 alloy.
Critical Variables: Discharge peripheral velocity (m/s), piping configuration, top particle size (mm).
Avoided Risk: Prevents split-casing breakthrough perforation and uncontrolled slurry containment spills in plant sumps.
4-Material Wet-End Matrix (A05 / R55 / U01 / SiC Ceramic) & Gülich Law Δη_v = k_r·(δ/b₂)^1.5
27% High Chrome White Iron (≥ 650 HB)
SAG/ball mill discharge, primary hydrocyclone feed, and coarse sharp-edged ore particles.
Wear-Resistant Natural Rubber (Shore A 55–65)
Flotation circuits, thickeners, and fine tailings (d80 < 150 µm) free of coarse tramp metal or sharp rock.
Cast Polyurethane Elastomer (Shore A 85–95)
Hydrocyclone clusters, regrind duties, and fine-to-medium slurries with high velocity or acidic pH.
Silicon Carbide (SiC) Ceramic Composite
High-pressure hydrocyclone feed and extreme silica slurries with aggressive pH.
Front suction throatbush for 6x4 D-frame slurry pumps. Streamlined hydraulic entry profile designed to optimize available NPSH and mitigate localized cavitation wear. Station 03: 11. Cuello de Succión Cónico Throatbush (Estación 03 • Claro δ=0.5–1.0 mm). Calibrating front clearance within δ = 0.5–1.0 mm prevents volumetric recirculation loss Δη_v = k_r·(δ/b₂)^1.5 from degrading the 5:5:4 wear lot ratio into 5:9:4.