There are a large number of differing pump types used in the pumping of slurries.Positive displacement and special effect types such as Venturi eductors are used butby far the most common type of slurry pump is the centrifugal pump. 

The centrifugal slurry pump utilises the centrifugal force generated by a rotating impeller to impart energy to the slurry in the same manner as clear liquid type centrifugal pumps.However, this is where the similarities end.

Centrifugal slurry pumps need to consider impeller size and design, its ease of maintenance, the type of shaft seal to be used and the choice of the optimum materials.This is needed to withstand wear caused by the abrasive, erosive and often corrosive attack on the materials. Many other important considerations are also required.

The centrifugal slurry pump must be designed to allow the passage of abrasive particles which can at time be extremely large.Slurry pumps therefore need much wider and heavier impellers to accommodate the passage of large particles. They must also be constructed in special materials to withstand the internal wear caused by the solids.

Actually this is what we need to do for you:

• Determine the flow rate
• Determine the static head
• Determine the pump head & efficiency corrections
• Determine the pipe diameter
• Caculate the friction head lose and total dynamic head
• Select the slurry pump type and material
• Determine the slurry pump speed
• Caculate the required power
• Additional design considerations

A initial slurry pump selection need basic 3 elements: the flow rate, the total dynamic head,the slurry gravity.

• AlphaFlo® supply many range slurry pumps with the interchangeability of rubber lining and hard metal lings,such as AlphaFlo® A and L&M horizontal slurry pumps and AlphaFlo® V series sump trash pump, so which impeller & liner material suit my applications?
• Rubber lined slurry pump deliver longer wear life within fine-particle applications, where the solids average particle size is less than 250 microns, with a maximum particle size 10mm.Metal-lined pumps are typically recommended for slurries containing larger particle sizes.

The answer is YES. AlphaFlo® supply lot range of slurry pumps are interchangeable with OEM Weir Warman pump,for example:

• Warman AH Heavy Duty Horizontal Centrifugal Slurry Pump
• Warman HH Highe Head Slurry Pump
• Warman L & M low to medium dense high efficiency Slurry Pump
• Warman G & GH Gravel and Sand Pump

AlphaFlo®  slurry pumps have been rigorously reverse engineered using  2D 3D modeling. First article inspection involves comparison to OEM parts followed by fit & material testing. All impellers have been performance tested to certify them against OEM performance.