What type of sieve is suitable for use in the packaging section of colored diammonium phosphate?
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Dear friends: As is well known, the colored diammonium phosphate particles have an oil coating on their surface. Due to their high viscosity, sieving is often required during packaging in order to remove large lumps as well as small particles (or fine powder). What type of sieve would be suitable for this purpose? Please give some feedback.
Isn’t it usually sufficient to sieve once before putting it into the packaging tube?
With proper control of the amount of coloring agent and coating oil, no further screening is required.
Internal coloring should be the main approach, with external coating used as a supplement; the external coating just needs to be appropriate. The standards are: a glossy finish, complete coverage, and no sticking to the hands. Excessive use of coating oil can lead to scarring and blockages in the conveyors in subsequent processing stages, as well as sticking to the conveyor belts, making cleaning difficult and resulting in uneven application of fertilizer by the machine. . .