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WET-END WEAR PART

Slurry Pump Impeller

Heavy-duty closed slurry impeller with wide-passage main vanes and front/rear pump-out vanes for grinding, cyclone feed, and tailings pumps.

Impeller Characteristics

The impeller transfers centrifugal energy to the mineral slurry and absorbs the highest kinetic impact from suspended solids. Its geometry features front and rear pump-out vanes that reduce internal recirculation against the throatbush and lower pressure at the stuffing box.

Impeller Specifications

Available Materials High Chrome (ASTM A532 ≥ 650 HB), Natural Rubber (R55), Polyurethane (U01), and Sintered Silicon Carbide (SiC ≥ 2200 HV)
Vane Geometry 5-vane closed (high efficiency) or 4-vane wide passage
Pump-Out Vanes Auxiliary vanes on front and rear shrouds to control recirculation
Shaft Thread Precision-machined thread for direct mounting on the Bearing Assembly shaft

Wet-End Lot Supply

Because the impeller and throatbush wear faster than the volute, concentrator plants typically order impellers in matched wet-end lots (for example: 5 impellers, 5 throatbushes, and 4 volute liners).

[ENGINEERING DECISION CRITERIA — STATION 03]

Metallurgical Rule: A05 (650+ HB) mandatory for quartz or silica over 35%. Vulcanized natural rubber mandatory for pH under 4.5 or sodium cyanide solutions with fine solids.

Critical Variables: Slurry specific gravity (SG), solid concentration by weight (Cw %), d80 particle distribution, and operational slurry pH.

Avoided Risk: Prevents accelerated clearing back-vane erosion and premature pressure loss to classification hydrocyclones.

Verified Standard Impellers at Durango Warehouse (D3147 / E4147 / F6147)

D3147 (SMAT-PUMP-3X2-IMP) 32.5 kg • LI=2.93

Closed High Chrome A05 Impeller for 4/3 C Pump

∅D₂ = 270 mm • Max sphere = 28 mm • Wall = 24 mm

NIOSH Rigging: HOIST_REQUIRED (HOIST_MANDATORY) • Station 03: 09. Impulsor Cerrado 5 Álabes (Estación 03 • Lote 5:5:4)

E4147 (SMAT-PUMP-6X4-IMP) 68 kg • LI=6.13

Closed High Chrome A05 Impeller for 6/4 D Pump

∅D₂ = 380 mm • Max sphere = 45 mm • Wall = 32 mm

NIOSH Rigging: HOIST_REQUIRED (HOIST_MANDATORY) • Station 03: 09. Impulsor Cerrado 5 Álabes (Estación 03 • Lote 5:5:4)

F6147 (SMAT-PUMP-8X6-IMP) 142 kg • LI=12.79

Closed High Chrome A05 Impeller for 8/6 E Pump

∅D₂ = 510 mm • Max sphere = 64 mm • Wall = 42 mm

NIOSH Rigging: HOIST_REQUIRED (HOIST_MANDATORY) • Station 03: 09. Impulsor Cerrado 5 Álabes (Estación 03 • Lote 5:5:4)

Tribological Wet-End Material Selection (A05 / R55 / U01 / SiC)

[A05] ≥ 650 HB (60–62 HRC)

27% High Chrome White Iron (≥ 650 HB)

u₂ ≤ 32 m/s • K_Ic = 20 MPa·√m • d₈₀: 150–6000 µm • pH 4–12.5
Configure in A05 →
[R55] Shore A 55–65

Wear-Resistant Natural Rubber (Shore A 55–65)

u₂ ≤ 24.5 m/s • K_Ic = 12 MPa·√m • d₈₀: 10–150 µm • pH 3.5–11
Configure in R55 →
[U01] Shore A 85–95

Cast Polyurethane Elastomer (Shore A 85–95)

u₂ ≤ 26 m/s • K_Ic = 14 MPa·√m • d₈₀: 20–350 µm • pH 2–11.5
Configure in U01 →
[SiC] ≥ 2200 HV (Mohs 9.2)

Silicon Carbide (SiC) Ceramic Composite

u₂ ≤ 28 m/s • K_Ic = 4.1 MPa·√m • d₈₀: 30–800 µm • pH 1–13.5
Configure in SiC →