Slurry pump selection and calculation formula

The slurry pump selection formula is listed in various industry standards, the symbols in the formula are unified.

1) Typical slurry method

Pipeline features:

Water Hf = ΔH + (1 + ξ) (V ^ 2) / (2g)

Slurry Hmo = ΔΗ + 0.72Ko (Vl ^ 2) + 0.58Ko (V ^ 2)

Pump features:

Slurry Hm = ΔΗ + 0.72Ko (Vl ^ 2) + 0.58Ko (V ^ 2)

Fresh water Hs = Hs * HR

2) Coal Preparation Plant 1

Pipeline features:

Water Hf = ΔH + iL + 2

Slurry Hmo = ΔΗ + imL + 2

Pump features:

Slurry Hm = ΔΗ + imL + 2

Water Hs = H / Km

3) ash calculation method

Pipeline features:

Fresh water Hf = ΔH + 1.05iL

Slurry Hmo = ΔΗγm + 1.05imL

Pump characteristics

Slurry Hm = 1.1Hmo

Water Hs = Hs * γm * Km

4) tailings calculation method

Pipeline features:

Water Hf = ΔH + iL + Σhi

Slurry Hmo = ΔΗγm + imL + Σhi

Pump features:

Slurry Hm = ΔΗγm + imL + Σhi

Water Hs = Hs * γm * Km * Kh

5) Filling mining method

Pipeline features:

Water Hf = ΔH + 1.05iL + Σhi

Slurry Hmo = ΔΗγm + imL + Σhi

Pump features:

Slurry Hm = ΔΗγm + imL + Σhi

Fresh water Hs = Hs * Km * Kh

6) Metallurgical mining law

Pipeline features:

Water Hf = ΔH + iL + Σhi

Slurry Hmo = ΔΗγm + imL + Σhi

Pump features:

Slurry Hm = ΔΗγm + imL + Σhi

Water Hs = Hs * γm * Kh

Symbol and meaning in the formula

Hf, Hmo, Hm, Hs pipe water head and the head of the slurry, the pump head and the slurry head lift;

ΔH head loss;

L pipe length;

i, im water and slurry friction coefficient;

Kh = 1-0.25Cw

γm slurry specific gravity;

Ko = H / (V ^ 2), water calculation pipe head and the square of the speed ratio.

Vl critical sedimentation velocity.

Km = Hm / (Vm ^ 2) slurry calculated pipe head and the ratio of the speed of the square.