Material selection basis of GBY concentrated sulphuric acid pump products

GBY series special steel under concentrated sulfuric acid pump is widely used in 80 ~ **** sulfuric acid, the temperature can reach 60-80℃. Steel in this concentration and temperature range of sulfuric acid, the surface can produce a protective iron sulfate film. Cast iron is not suitable for fuming sulfuric acid in excess of ****, probably due to the reaction of sulfur trioxide with the silicon contained in the iron, which makes the cast iron brittle. Carbon steel is not suitable for 100 ~ 102% of the fuming sulfuric acid, more than 102% of the acid is suitable, the temperature limit is about 60℃. Dilute sulfuric acid is very corrosive to steel, when the acid concentration is about 47%, the corrosion rate reaches a high value. When the acid concentration is greater than 65%, the corrosion rate of steel is significantly reduced. However, in the concentration of 65 to 80%, it is better not to use steel, and it is safer to use lead or other dilute acid resistant materials. Sulfuric acid concentration: 80% ~ 98% Special cast iron temperature: 25 ~ 50 degrees, special carbon steel temperature: 25 ~ 60 degrees.

Significance of GBY pump model under concentrated sulfuric acid solution

For example, GBY50-25A

GBY stands for heavy sulphuric acid under pump

50 represents pump inlet diameter (mm)

25 stands for lift (m)

A stands for impeller outside diameter once turning

GBY concentrated sulfuric acid under the pump product features

GBY series concentrated sulfuric acid pump is a new type of concentrated sulfuric acid pump produced by material improvement design according to the performance parameters of FY liquid pump. Compared with traditional concentrated sulfuric acid pump in China, this pump has unique characteristics and low price. It is the best choice for circulating sulfuric acid pump in drying tower and absorption tower in sulfuric acid production.

1. Reasonable structure.

2, material selection of special cast iron, carbon steel two kinds, economic and practical, high efficiency and energy saving.

3, the use of open impeller, for conveying liquid containing particles, (particle diameter does not exceed 30% of the diameter of the pump inlet is appropriate), stable operation, no blockage.

Performance parameters of GBY chemical pump under concentrated sulfuric acid solution