Method for improving powder potash magnesium sulphate fertilizer granularity
A potassium and magnesium sulfate fertilizer and particle size technology, which is applied in the field of salt chemical industry, can solve problems such as dust, achieve the effects of reducing dust, improving the working environment, and facilitating production cost management
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[0011] A method to increase the particle size of powdered potassium magnesium sulfate fertilizer, refer to figure 1 The process steps are as follows: 1) The soft potassium concentrate foam containing about 70% soft potassium magnesia is obtained by the "turning first and then floating" process of the mixed salt of potassium and magnesium magnesium sulfate subtype; 2) the soft potassium concentrate obtained in step 1) The mineral foam, fresh water and washing return mother liquor are mixed and washed for 30 minutes in a weight ratio of 5:1:4; 3) The pulp obtained in step 2) is filtered and separated, part of the filtrate is returned to room temperature for conversion, and the other part is returned to the washing tank to adjust the concentration; 4) Put the filter cake obtained in step 3) into a high-temperature stirring tank, add 70% of the weight of the filter cake with 80°C hot water, control the conversion temperature in the range of 50-55°C, and mix and stir for 30 minutes; ...
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