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.
A finned tube is a heat transfer device consisting of many parallel metal fins commonly used for heat dissipation and cooling applications. Finned tubes increase the surface area of the pipe, thus increasing the heat transfer efficiency. Finned tubes are commonly used in applications such as air coolers, automotive radiators, condensers, and evaporators. They are also used in industrial heaters and refrigerators to increase heat transfer surface area and improve efficiency.
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