Production of white compound fertilizer (not very white)
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I would like to know why the white compound fertilizer produced by my company isn’t very white. We use anthracite as well, and all the raw materials are white; is it necessary to add some special whitening agent? Thank you.
It’s usually a matter of the color of the soil. No one uses whitening agents. Are there any other reasons during the production process that could cause other colors to mix in?
Check if there is any change in the color of the phosphate. When the phosphoric acid used in production at our facility varies, the finished products will exhibit color differences.