Engineering pump new favorite slag pump selection and calculation formula

Slurry pump various selection 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.