COLUMN SEPARATOR AND METHOD BASED ON MINERALIZATION-FLOTATION SEPARATION Russian patent published in 2022 - IPC B03D1/02 B03D1/24 

FIELD: coal mining.

SUBSTANCE: proposed group of inventions relates to a column separator and a method based on mineralization-flotation separation, and it can be used for the technology of processing mineral raw materials in the field of flotation. An electric engine is installed on the upper part of a mixing tank, a shaft of which vertically enters the tank and is equipped with a mixer. The lower part of the mixing tank is connected to a pump supply channel by means of a pipeline. A pump discharge channel is connected to a bubble generator inlet by means of a pipeline. A mineralization chamber includes a cylindrical shell on the upper part, as well as a funnel-shaped structure in the lower part. On the side surface, below the cylindrical shell of the mineralization chamber, there is a supply channel, to which a bubble generator outlet is connected through a pipeline. The supply channel available in the lower middle part of the mineralization chamber is located tangentially to it. In the lower part of the funnel-shaped structure, there is an emergency discharge channel with a crane. Several shock-absorbing discs are installed on the sidewall of the cylindrical shell. The discharge channel is located on the sidewall of the mineralization chamber above the cylindrical shell of this chamber. A flotation column includes a column-like part, on top of which a collector with a collector channel is installed. There is a supply channel on the sidewall of the column-like part of the flotation column, and a discharge channel of the mineralization chamber is tangentially connected to this channel through a turbulent flow diffuser pipe. At the bottom of the column-like part, there is a funnel-shaped part in the form of an inverse trapezoid, wherein on this and column-like parts, one or more layers of microporous ceramic plates serving as a gas chamber are transversely arranged. At the bottom of the funnel-shaped part, there is an inlet of flotation column gas, connected to an air compressor through a pipeline. On the surface opposite to the location of the supply channel of the flotation column, flotation fluting with a downward slope is installed, and on the sidewall below the column-like part of the flotation column, there is a residual coal channel located 1-10 mm above microporous ceramic plates. The column separator is used in the method of mineralization-flotation separation, in which coal sludge and reagent are supplied into the mixing tank, which are mixed to a homogeneous state to obtain a mixture that, under pressure pumped by the pump, is supplied into the bubble generator, in which a microbubble mixture is formed. Next, the mixture is supplied into the mineralization chamber and then into the flotation column. In the flotation column, after the turbulence dissipation, the mineralized bubble mixture undergoes static separation in the corresponding static separation area using flotation fluting of the flotation column, and particles of the non-mineralized mixture with desorption enter the flotation leaching area using air to increase the degree of extraction, and finally enriched coal enters the collector, and residual coal is discharged through the discharge channel until the separation of coal sludge is completed.

EFFECT: increase in the efficiency of separation, as well as increase in the quantity and quality of products from enriched coal.

6 cl, 2 dwg