A treatment device for treating a mixture of at least a liquid, organic solids and inorganic, mineral solids, includes a container for receiving the mixture. The container tapers in a funnel shape in a direction of a longitudinal axis of the container. An inlet tangentially supplies the mixture to the container. An outlet discharges the liquid essentially containing the organic solids from the container. A discharge apparatus serves for discharging the inorganic, mineral solids. The treatment device also includes a sleeve adapted to guide the mixture between an outer wall of the sleeve and an inner wall of the container and to guide the liquid containing the organic solids within an inner wall of the sleeve for discharge from the outlet.

A flow self-adjusting type mine diameter grading apparatus applied to tailings recovery includes a driving device, a tailings conveying device, a flow regulating device, and a mine diameter grading device arranged in sequence according to working procedures. A motor of the driving device is configured to drive an axial flow impeller and a spiral concentrating wheel to do work through a main shaft connected with the motor. The tailing conveying device includes a tailing water main pipe, a tailing water pipe, an ore blowing pipe, an ore suction pipe, an ore conveying main pipe and ore conveying branch pipes. A flow regulating valve of the flow regulating device is configured to rotate along with the main shaft and move up and down according to change of a rotational speed. The mine diameter grading device includes first-level to fifth-level mine diameter grading plates and first-level to fifth-level mine diameter storage bins.

A flow self-adjusting type mine diameter grading apparatus applied to tailings recovery includes a driving device, a tailings conveying device, a flow regulating device, and a mine diameter grading device arranged in sequence according to working procedures. A motor of the driving device is configured to drive an axial flow impeller and a spiral concentrating wheel to do work through a main shaft connected with the motor. The tailing conveying device includes a tailing water main pipe, a tailing water pipe, an ore blowing pipe, an ore suction pipe, an ore conveying main pipe and ore conveying branch pipes. A flow regulating valve of the flow regulating device is configured to rotate along with the main shaft and move up and down according to change of a rotational speed. The mine diameter grading device includes first-level to fifth-level mine diameter grading plates and first-level to fifth-level mine diameter storage bins.

A flow self-adjusting type mine diameter grading apparatus applied to tailings recovery includes a driving device, a tailings conveying device, a flow regulating device, and a mine diameter grading device arranged in sequence according to working procedures. A motor of the driving device is configured to drive an axial flow impeller and a spiral concentrating wheel to do work through a main shaft connected with the motor. The tailing conveying device includes a tailing water main pipe, a tailing water pipe, an ore blowing pipe, an ore suction pipe, an ore conveying main pipe and ore conveying branch pipes. A flow regulating valve of the flow regulating device is configured to rotate along with the main shaft and move up and down according to change of a rotational speed. The mine diameter grading device includes first-level to fifth-level mine diameter grading plates and first-level to fifth-level mine diameter storage bins.

A flow self-adjusting type mine diameter grading apparatus applied to tailings recovery includes a driving device, a tailings conveying device, a flow regulating device, and a mine diameter grading device arranged in sequence according to working procedures. A motor of the driving device is configured to drive an axial flow impeller and a spiral concentrating wheel to do work through a main shaft connected with the motor. The tailing conveying device includes a tailing water main pipe, a tailing water pipe, an ore blowing pipe, an ore suction pipe, an ore conveying main pipe and ore conveying branch pipes. A flow regulating valve of the flow regulating device is configured to rotate along with the main shaft and move up and down according to change of a rotational speed. The mine diameter grading device includes first-level to fifth-level mine diameter grading plates and first-level to fifth-level mine diameter storage bins.

There is provided a system for treating a combination of a liquid and granular matter, which granular matter is larger than or equal to a minimum grain size and comprises two or more types of granular matter with different densities, wherein at least two of the different types of granular matter have densities being larger than the density of the liquid. The system comprises a stratification machine with a stratification or sorting chamber for holding the combination of liquid and granular matter, which stratification or sorting chamber has one or more side walls. The stratification machine also holds a movable plate arranged within the stratification or sorting chamber, where the moveable plate has sieve openings smaller than the minimum grain size of the granular matter to be treated to thereby maintain the granular matter above or on top of the movable plate. The stratification machine further holds a drive system for moving the movable plate in vertical upwards and downwards movements within the stratification or sorting chamber to thereby exercise or treat the granular matter within the liquid. There is also provided a method for treating the combination of a liquid and granular matter. The granular matter may include or consist of polymer granular matter.

A method and apparatus for washing and separating pieces of plastics material from contaminating material that also includes metal elements includes a stirring device having a plurality of blades which are driven in a washing fluid to generate a turbulent stirring action to mechanically remove part of the contaminating material from the plastics material. The tilt of the blades and the rotation speed of the stirring device are chosen carefully to generate an upward thrusting action to maintain the plastics material with a specific weight that is greater than the specific weight of the fluid in a floating condition. The plastics material is retained inside the container for sufficient time to obtain a desired degree of purity and decontamination for the plastics material, after which it is evacuated by controlled overflow.

A method and apparatus for washing and separating pieces of plastics material from contaminants includes supplying to a washing container pieces of plastics material containing contaminating material and an entering flow of washing fluid. A turbulent stirring action to detach and separate mechanically the contaminating material from the plastics material is generated, evacuating through overflowing, through an outlet port An outlet flow of washing fluid and a quantity of plastics material that has undergone the turbulent stirring action is evacuated by overflow through an outlet port. A controlled-conveying and retaining arrangement is driven to retain the plastics material in the washing container and to advance in a controlled manner the quantity of plastics material to the outlet port independently of the advancement of the outlet flow of washing fluid. An adjustable bulkhead is arranged in the washing fluid at a depth with respect to the free surface to divert from the outlet port the pieces of plastics material that, once supplied to the container, by advancing more on the surface, tend to reach the outlet zone of the washings container. The bulkhead guides and forces the pieces of plastics to undergo the turbulent stirring action to separate and detach the adhering contaminants therefrom.

A method and apparatus for washing and separating pieces of plastics material from contaminants includes supplying to a washing container pieces of plastics material containing contaminating material and an entering flow of washing fluid. A turbulent stirring action to detach and separate mechanically the contaminating material from the plastics material is generated, evacuating through overflowing, through an outlet port An outlet flow of washing fluid and a quantity of plastics material that has undergone the turbulent stirring action is evacuated by overflow through an outlet port. A controlled-conveying and retaining arrangement is driven to retain the plastics material in the washing container and to advance in a controlled manner the quantity of plastics material to the outlet port independently of the advancement of the outlet flow of washing fluid. An adjustable bulkhead is arranged in the washing fluid at a depth with respect to the free surface to divert from the outlet port the pieces of plastics material that, once supplied to the container, by advancing more on the surface, tend to reach the outlet zone of the washings container. The bulkhead guides and forces the pieces of plastics to undergo the turbulent stirring action to separate and detach the adhering contaminants therefrom.

An elutriation apparatus has a mechanism adapted to move water along a path, the water entraining material particles of different density, and a plurality of elutriation columns interfaced to the mechanism adapted to move the water with entrained particles, the elutriation columns interfaced along the path, each elutriation column having a vertical bore with water controlled to travel up the vertical bore at one velocity and having also a capture element at the bottom of the bore. As the water with entrained particles passes over each interface to an elutriation column along the path, particles of a density sufficient for the particles to settle in the elutriation column at a velocity greater than the upward velocity of water in the bore of the elutriation column, settle to the bottom of the column, and particles of lesser density pass on to a next elutriation column interfaced along the path.