Centrifugal Slurry Pump: Warman AF(R) vertical froth pump

1. What is a froth pump?

The AF froth pumps has been designed to increase the pumpability of frothy slurry. The pump operation is similar to hydrocyclone seperation.

The basic principle of the froth pump operation is to de-aerate or partially de-aerate the froth before it enters the pumping. Its handling capacity of the pump is muchhigher than that of other types of slurry pump without shaft seal and sealing water.

2. What advantage of AF slurry pump?

The advantages of the pump are of excellent performance, easy assebly & disassembly, high and etc.

The AF series froth pumps is a efficiency pump are suitable for handing solids-liquid mixture, special for delivering frothy pulp generated in flotation machines in metalliferous and coal flotation circuits.

The AF froth pump is ideal for all applications involving handling of air entrained slurries, such as flotation froth in base metal concentrators, phosphate and apatite washing plants and calcium carbonate upgrading plants.

The pump can also be used as a mixing and distribution unit, where dry powder has to be mixed (and wetted) with water. It can also be used with cement in ready mixed concrete and for grouting and injection mixing.

3. What structure of the AF froth pump

The construction of pump head is double casings slurry pump. All wet-parts can be supplied in Ni-hard, high chrome alloy iron and pressure-moulded natural or synthetic rubber.

The driver end can be exchanged with that of type--SP(R) pumps. The hopper-tank is fabricated with steel plate. Its inner wall of the tank can be covered with liner according to different medium pumped.

The discharge branch can be positioned at intervals of 45 degrees by request and oriented to any eight positions to suit installations and applications.

4. Froth pump construction drawing

5. Main part number at the drawing

1.Bearing 2.Bearing Assembly 3.Tank	4.Frame Plate 5.Cover Plate

1.Bearing
2.Bearing Assembly
3.Tank

4.Frame Plate
5.Cover Plate

6. Materials of construction

	LINERS	IMPELLERS	CASING	BASE	EXPELLER	EXPELLER RING	SHAFT SLEEVE	SEALS
Standard	Chrome Alloy Natural Rubber	Chrome Alloy Natural Rubber	SG Iron	SG Iron	Chrome Alloy or SG Iron	Chrome Alloy or SG Iron	SG Iron	Rubber and Nitrile
Options	Ferralium Hastelloy C 316 SS W151 Polyurethane Neoprene Butyl Viton Nitrile EPDM Hypalon	Ferralium Hastelloy C 316 SS W151 Polyurethane Neoprene Butyl Nitrile Hypalon	SG Iron Various grades	MS Fabricated Cast Iron	NI Resist Ferralium Hastelloy C Polyurethane 316 SS W151	NI Resist Ferralium Hastelloy C 316 SS Rubber W151 Polyurethane Neoprene Butyl Nitrile	EN56C Ferralium Hastelloy C Titanium 316 SS 304 SS	Ceramic Stellite Chrome Oxide Nordel Neoprene Viton

7. AF froth pump selection chart

( Note: Approximate performance for clear water,to be used for primary selection only.)

8. Pump performance parameters

Type	Allowable Mating Max. Power(Kw)	Clear Water Performance				Impeller
		Capacity/Q m³/hr	Head/m	Speed/rpm	Max Efficiency/%	Impeller Diameter/mm
2 QV-AF	15	7.2-33	5-30	800-1800	45%	229
3 QV-AF	20	10-104	10-28	700-1500	55%	268
4 RV-AF	40	15-130	6-28	500-1050	55%	397
6 SV-AF	75	55-330	6-25	350-680	55%	560