How to distinguish the true and false of phosphate fertilizer by simple method

How to distinguish the true and false of phosphate fertilizer by simple method? Phosphate fertilizer is more common in chemical fertilizers. It is widely used in the production process of crops. The quality of phosphate fertilizer can be quickly judged by methods such as “look, burn, touch, test and test”. The counterfeit and inferior identification methods of several types of main fertilizers are introduced as follows: Phosphorus gypsum, calcium magnesium phosphate fertilizer, waste cement slag, etc., which are mainly used for counterfeiting calcium phosphate in the phosphate fertilizer market, are classified as follows:

Water soluble. The calcium is partially dissolved in water, the phosphogypsum and calcium magnesium phosphate are insoluble in water, and the waste cement powder is added with water to form a slurry, which is re-solidified. In the identification, if it is found that there are obvious impurities such as clods, stones, cinders, etc. in the ordinary calcium, it is inferior calcium; if it is found that the acidity is too rich and the water is more, it is a non-finished product that is not matured. Calcium.

Feel. Calcium is heavy, feels but not frivolous; Phosphogypsum has a light texture and feels dry; the waste cement is heavier than ordinary calcium, the hand is not greasy, it is not dry, it is not dry, and there is hard cement residue.

Exterior. Calcium is dark gray or grayish white, light gray loose powder, sour; phosphogypsum is grayish white hexagonal granular crystal or crystalline powder, no sour; calcium magnesium phosphate, no sour, very dry vitreous fine Or fine powder; waste cement slag is gray powder, dull, with more hard materials, the granules are also coarser and have no sour taste after pulverization; the color of brick powder is blue, the powder is thicker and has no sour taste.

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