Novel technology for preparing potash magnesium sulphate fertilizer by reaction between magnesium sulfate ore and potassium chloride

• Main Authors: HAN RENJIAN, NIE JINGXIN, CHEN YONGTAO, WU FANPING
• Format: Patent
• Language: Chinese; English
• Published: 16.03.2016
• Subjects: CHEMISTRY; FERTILISERS; FERTILISERS PRODUCING CARBON DIOXIDE; INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; MANUFACTURE THEREOF; METALLURGY

The invention relates to the field of salt chemical technology, specifically to a new technology for preparing a potash magnesium sulphate fertilizer by a reaction between magnesium sulfate ore and potassium chloride. The method of the invention comprises the following steps: Step 102, pretreating magnesium sulfate ore, carrying out slurry mixing and conducting a reaction between magnesium sulfate ore slurry and potassium chloride; Step 104, pumping materials into a flotation machine through a slurry pump after the reaction, and adding a reagent X; and Step 106, filtering flotation froth, leaching, drying and the like to obtain a potash magnesium sulphate fertilizer product. The new technology for preparing the potash magnesium sulphate fertilizer by the reaction between magnesium sulfate ore and potassium chloride has the following beneficial effects: magnesium sulfate ore from a salt lake is utilized, and the problem that product index, especially chloride index does not reach the standard due to impurities