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Chemical process pump is a general term for various pumps in the chemical production process. There are many types of chemical process pumps, which can be divided into vane pumps according to their function principle, such as centrifugal pumps, axial flow pumps, mixed flow pumps, partial flow pumps, vortex pumps, etc. Positive displacement pumps such as reciprocating pumps Pump, diaphragm pump, etc.); rotary pump (including screw pump, liquid ring pump gear pump, vane pump, Roots pump, radial piston pump, etc.); other types of pumps, such as the production process or product characteristics, For the high-pressure methylamine pump, cryogenic pump, phosphor slurry pump. In chemical or petrochemical production, the pump is working under high temperature, low temperature (or ultra-low temperature), high pressure, flammable, explosive and toxic corrosive media, and some are still under high inlet pressure, high lift, high viscosity, low flow, High cavitation conditions, the performance of the chemical pump made quite demanding requirements, especially for corrosion resistance, leakage is not allowed (for toxic media) and wear resistance demanding. In order to meet the special requirements of chemical production, the chemical industry also specializes in the production of chemical pumps, such as plastic pumps, glass pumps, ceramic pumps, graphite pumps, shielded pumps, magnetic pumps and impurity pumps. The main media that need to be transported in the process of phosphate fertilizer production are phosphate slurry, phosphate slurry, various filtrates, concentrated phosphoric acid, phosphoric acid, concentrated sulfuric acid, dilute sulfuric acid and fluorosilicic acid. The pump is highly susceptible to medium corrosion or erosion and erosion.
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