The production method of sodium tripolyphosphate

Although the process route for preparing sodium tripolyphosphate from neutralizing solution is different, it can be divided into two major categories in general. One is to dry the neutralization liquid into a certain size of phosphate (commonly known as dry salt) in spray drying, and then to be condensed into sodium tripolyphosphate, the other is made of neutralization solution made of sodium tripolyphosphate. The person is called the two step method, the latter is called the one step method. One step shapeThere are many types, such as boiling bed one step method, rotary kiln one-step method, return material rotary kiln one-step method and empty tower one-step method.