METHOD OF CONTROLLING PROCESS OF DISSOLVING POTASSIUM CHLORIDE Russian patent published in 2011 - IPC B01F1/00 C01D3/08 G05D27/00 

FIELD: chemistry.

SUBSTANCE: invention can be used in halurgic production. The method of controlling the process of dissolving potassium chloride involves controlling supply of ore depending on content of the useful component in input streams, measuring temperature of the ready solution and consumption of dissolving solution. The ore used is an electrolyte obtained during electrolysis of molten dehydrated synthetic carnallite having the following composition: KCl - 60-80 %, MgCl₂ + CaCl₂ - 7-9%, insoluble particles - up to 1 %, NaCl - the rest. Content of magnesium chloride in the ready solution, its consumption, content of potassium chloride in the halite wastes and its consumption are also measured. The obtained parametres are used to determine maximum content of potassium chloride in the ready solution. The optimum consumption of electrolyte is calculated and the calculated value is used as a setting in the electrolyte consumption control system: where G is consumption of electrolyte, t; G_{r sol}.is consumption of the ready solution, t; G_{d sol}.is consumption of the dissolving solution, t; G_w is consumption of the halite wastes,t; C_KCle is content of potassium chloride in the electrolyte, %; C_{KCl r sol} is maximum content of potassium chloride in the ready solution, %; C_{KCl d sol} is content of potassium chloride in the dissolving solution, %; C_KClw is content of potassium chloride in the halite wastes, %.

EFFECT: invention simplifies the process of dissolving potassium chloride due to real-time control of consumption of electrolyte fed for dissolving, using automated equipment, depending on change in process parametres.

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