Preparation of potassium chioride in brine

Reverse flotation - cold crystallization process

This process provides significant energy savings compared to cold decomposition-flotation and cold decomposition-hot melt crystallization. The process was developed in 1979 by Israel Dead Sea Engineering. The whole process is carried out at room temperature except for the drying process. It is the best process for preparing potassium chloride by using carnallite as raw material.

The processes in Jordan and Israel are mainly for screening after harvesting through the Dead Sea salt field. Coarse grain carnallite is directly subjected to cold crystallization. Fine-grained carnallite is subjected to reverse flotation, concentrated dehydration and then cold crystallization. After cold crystallization, it is sieved, concentrated and dehydrated, washed and dehydrated, and dried. It is then sieved to obtain a coarse and finely divided potassium chloride product.

Reverse flotation-cold crystallization process for producing potassium chloride 

The process is mainly divided into pulping, reverse flotation, dehalogenation, cold decomposition crystallization, and filtration. 

Plate heat exchanger application

In the production process of potassium chloride, because the pulp, carnallite contains a large amount of magnesium chloride, potassium chloride, sodium chloride, the chloride ion concentration is large.The recommended material for the plate is titanium. The choice of gasket can be selected according to specific temperature and medium. Among them, the halogen evaporation system, the hot side water vapor is 156-70°C, the cold side liquid is 65-110°C, and the rubber gasket can be selected as Viton.