Technology for processing of potash ore.Section Two. (1980)

Documentary №41139, 2 parts, duration: 0:19:15
Production: Sverdlovsk newsreel studio
Camera operators:Dekach


The film comprises the following parts: grinding, desliming, flotation and filtering of ores.

Reel №1

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Processing plant.

Workshop for processing potash ores by flotation method.

Workshop for the halurgic extraction of potassium chloride from silvinite.

This method includes the processes of leaching potassium chloride from ore with hot circulating solutions, clarification of the saturated solution and its subsequent crystallization under vacuum cooling.


The salt components of solvinite are silvin and halite.

In addition, the ore contains an insoluble residue - clay.

Laboratory analysis of the components of solvinite.

Sylvin and halite have different temperature coefficients of solubility and crystallization.

With an increase in temperature, the solubility of sylvin increases, and the solubility of halite remains almost constant.

This is the basis of the galurgical method of processing potash ore. then into the loading heat.

Cartoon explaining the process of obtaining potassium chloride.

All units of the processing line are shown in parallel.

Before crystallization, a chemical analysis of the solution is carried out.

Key words

The halurgic method.

Reel №2

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A multi-stage vacuum crystallization plant in which larger crystals of potassium chloride are obtained.

This installation increases the efficiency of the halurgic method of obtaining potassium chloride.

A cartoon explaining the operation of a multi-stage vacuum crystallization plant.

In parallel with the cartoon, the equipment involved in the crystallization process is shown.

To obtain a large-crystal product, a vacuum-controlled crystallization unit has been developed.

The crystallization process in this installation is based on the regulation of crystal growth.

A cartoon explaining the operation of the controlled crystallization unit.

Laboratory installation of controlled crystallization.

Continuation of the cartoon explaining the operation of the controlled crystallization unit.

The process is shown in parallel on a laboratory installation.

Determination of the humidity of potassium chloride in the laboratory.

After the centrifuge, the finished product with a moisture content of 5-7% is sent to drying by the conveyor system.

Drum dryers of potassium chloride.

A cartoon explaining the operation of drum dryers.

After drying, the content of potassium chloride and sodium chloride is determined, as well as humidity and granulometric composition of the finished product.

Large and homogeneous crystals of potassium chloride do not contain dusting fractions, are not subjected to caking.

Packaging of potassium chloride.

A train with fertilizers leaves the plant.

Key words

Adjustable crystallization.

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