Method for preparation of superior grade potassium magnesium sulfate fertilizer from crude potassium chloride and crude picromerite
A technology of potassium-magnesium sulfate fertilizer and strontium ferrite, applied in the directions of potash fertilizer, application, inorganic fertilizer, etc., can solve problems such as potassium-free magnesium fertilizer, etc., and achieve the effects of easier operation, improved grade, and short process route
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[0009] A kind of method that utilizes crude potassium chloride and coarse langbeinite to produce high-grade potassium magnesium sulfate fertilizer, such as figure 1 As shown, (1) Decomposition flotation section: Take carnallite ore and add it to the washing mother liquor, and decompose it in the environment of 23-27 ° C. After decomposition, Mg 2+ content ≥ 5.8wt%, adjust the slurry concentration to [20 ± 1]wt% for flotation, the obtained contains K + The crude potassium chloride with the content ≥ 22wt% is used as the raw material for the preparation of high-grade potassium magnesium sulfate fertilizer; the component of carnallite is: K + 6.0~8.5wt%, Mg 2+ 6.2~8.8wt%, Na + 5.0~8.5wt%, SO 4 2- 10.0~16.0wt%, Cl - (2) ball mill conversion flotation section: take potassium mixed salt ore and add water to ball mill, and the grinding concentration is controlled at 55~65wt%, so that the particle size in the potassium mixed salt after grinding is 100 mesh Some account for more ...
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