Extraction of local limestone materials by mechanized units of "Selkhoztekhnika" (1969)

Map of the USSR, with information on the amount of highly acidic and moderately acidic soils in the background.

Panorama of farmland.

Lime quarry.

Processing fields with lime.

Deposits of local limestone materials.

Soil drilling for exploration.

Workers extract a core.

Journal entry.

Geologists discuss a quarry project.

A bulldozer carries out stripping operations.

An excavator loads lime into a dump truck.

Types of limestone materials, their chemical composition and occurrence.

A laboratory where the value of limestone materials is determined.

Processing limestone material with a 10% hydrochloric acid solution.

Reaction for each type of limestone materials.

Krasnovidovsky and Matyushensky quarries of the TSSR. An excavator loads soil from the quarry onto a dump truck.

Three technological schemes for the extraction of limestone materials.

The first scheme is an option with lime sifting.

A cartoon explaining such a scheme.

The material passes only through a screen.

The operator of the plant.

For sifting limestone material, a sieve with such a hole size is selected that the amount of particles over 5 mm in the finished product does not exceed 15%.

Installation design.

Grate on top of the bin.

Machines send sifted limestone material to the consumer.

The second diagram is a variant with sifting and grinding of lime.

A cartoon explaining such a diagram.

Belt conveyors.

Hammer crushers.

The third diagram is a variant with sifting and double grinding of lime.

A cartoon explaining the third diagram.