What are the materials of slurry pump? How to choose? Wear resistance or corrosion resistance? According to the common saying in the industry, the materials of slurry pump include metal, rubber and ceramic materials. Metal and rubber materials can be divided into many kinds. Different materials should be selected according to different working conditions. The common metal material is A05 and rubber material is R55.
What are the materials of slurry pump
Metals: A05, A07, A33, A49, cr30, 304 stainless steel, 316 stainless steel, duplex stainless steel
Rubber category: R55, EPDM, hepalon
Resins: polyurethane, polyether ester
Ceramics: silicon carbide
The above materials are commonly used for slurry pumps, among which A05, A49 and R55 are more widely used.
The characteristics of slurry pump determine the selection of slurry pump material. Slurry pump is a centrifugal pump for conveying slurry containing solid particles, not pure liquid. Therefore, it is generally required to have good wear resistance.
Therefore, the above property of slurry pump material should be wear-resistant.
However, under many special working conditions, we have to give up certain wear resistance and sacrifice wear resistance.
Rubber slurry pump R55
Selection of corrosion resistant medium for slurry pump transportation
In many cases, the slurry we transport contains not only solid particles, but also corrosive characteristics
When selecting the material of slurry pump, it must be determined according to the characteristics of conveying slurry. The expensive one is not necessarily good, but the suitable one is good
For example, we take stainless steel to transport slurry with strong abrasiveness, which is very wasteful and the effect is very poor;
It is also undesirable for us to use A05 slurry pump to transport highly corrosive slurry.
For example, nitrate, sulfuric acid and strong alkali pastes are very corrosive, generally between ph0-3 and ph12-14
Because the corrosion resistance of materials with good wear resistance is not necessarily good, at this time, we must give up A05 and R55, and choose A49, cr30, 304 stainless steel, 316 stainless steel, duplex stainless steel, EPDM and hipron, which are relatively special and rare materials with better corrosion resistance. The price of these materials is generally 1-3 times higher than that of ordinary materials, or even more.
How to choose the material of slurry pump
1. Slurry with small acidity and alkali and sharp angular particles: A05 and A07, which are common in metal mines and coal washing. The main application models of slurry pump are ZJ slurry pump, MAH slurry pump and ZGB slurry pump;
2. Slurry without sharp corners of particles with small acidity and alkalinity: R55 rubber material, common in metal mines and coal washing, mainly used in slurry pump model: MAH slurry pump;
3. Slurry with high acidity and alkalinity and more particles and strong corrosivity: A49 and cr30, which are common in power plant desulfurization industry;
4. Slurry with strong acidity and alkalinity, low temperature and certain abrasiveness: EPDM rubber and haparene rubber are selected, and nitrate transportation is common;
5. Slurry with strong acidity and alkali, low abrasiveness and low temperature: stainless steel;
