The raw materials for the production of potash fertilizer are mainly soluble potassium salt deposits (such as potash salt minerals, carnallite minerals, etc.), insoluble potassium minerals (such as alum, nepheline, potassium feldspar, etc.) and seawater, salt lake brines, and underground potassium. Brine and so on. Potassium fertilizer has various colors due to different raw materials. For example, agricultural potassium fertilizers often have different colors such as milky white, pink and light gray. Potassium sulphate is mostly powdery crystalline and is pale yellow, grayish green or light brown. Since the color of potash is related to the raw materials and has little to do with the quality of the product, as long as it meets the quality inspection standards, it is a qualified product.
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