METHOD FOR CONTROL OF POTASSIUM CHLORIDE PREPARATION Russian patent published in 2009 - IPC C01D3/04 G05D27/00 

FIELD: chemistry.

SUBSTANCE: invention can be used in the process of potassium chloride preparation by the method of solution-crystallisation. The method for the control of the aforesaid process by the way of input water flow varying includes: 1) the adjustment of water flow fed into crystallisation alkali liquor depending on potassium chloride concentration in the liquor and water consumption for washing of crystallisation apparatus; 2) detection of the temperature, density and consumption of alkali liquor. The said measurements allow to determine the sodium chloride content in the alkali liquor. The crystallisation water consumption is calculated on the basis of the obtained data according to proposed equation; the calculated values are input as assignment to the system of water consumption control.

EFFECT: invention simplifies the process control of the potassium chloride preparation.

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