A reactor system has a number of stations arranged to recover mineral particles in a slurry. The system includes a hopper to receive the slurry and barren media having hydrophobic coating to attract the mineral particles. The hopper provides a mixture of barren media and slurry to a tumbler arranged to stir the mixture in order to increase the contact between the slurry and the barren media so as to allow the mineral particles to attach to the barren media to form mineral laden media. The mineral laden media are conveyed to a rinsing station where water jets are used to wash the gangue materials off the mineral laden media. The rinsed mineral laden media are mixed with a surfactant so that the mineral particles are released from the mineral laden media. High-pressure water and air jets are then used to remove remaining surfactant from the released media.

Described are various embodiments of a continuous sluicing device, and method of manufacturing same. One aspect relates to a rotatable sluicing device comprising an inner trommel and an outer separating cylinder, wherein the outer separating cylinder comprises a rifled baffling portion disposed on an inner surface thereof. The rifled baffling portion comprises a helical collection riffle and one or more spiral fighting portions disposed near and substantially parallel to an edge of the helical collection riffle. Rotation of the inner trommel portion and outer separating cylinder urges lower density substrates to discharge from respective discharge ends thereof, and urges heavy particulate material in the helical collection riffle to move upstream for collection in a collection reservoir.

Described are various embodiments of a continuous sluicing device, and method of manufacturing same. One aspect relates to a rotatable sluicing device comprising an inner trommel and an outer separating cylinder, wherein the outer separating cylinder comprises a rifled baffling portion disposed on an inner surface thereof. The rifled baffling portion comprises a helical collection riffle and one or more spiral fighting portions disposed near and substantially parallel to an edge of the helical collection riffle. Rotation of the inner trommel portion and outer separating cylinder urges lower density substrates to discharge from respective discharge ends thereof, and urges heavy particulate material in the helical collection riffle to move upstream for collection in a collection reservoir.

A method and apparatus for producing liquified Alternative Supplemental Cementitious Material (ASCM) from an uncured concrete slurry. Uncured concrete slurry is received into a receiving hopper, diluted with water, and pumped upward through a slurry discharge conduit to an aggregate separator that screens the gravel and sand for separate discharge. The remaining ASCM entrained water flows into a holding tank. The ASCM settles to the lower portion of the holding tank. The holding tank stores the remaining water for re-use diluting uncured concrete slurry. The ASCM is liquified and moved towards the ASCM discharge port by an agitator system located in the bottom of the holding tank. From the discharge, a pump delivers the liquified ASCM through a conduit for discharge. The discharged ASCM can be used as a partial replacement for Ordinary Portland Cement and as an ingredient in flowable fills.

A method and apparatus for producing liquified Alternative Supplemental Cementitious Material (ASCM) from an uncured concrete slurry. Uncured concrete slurry is received into a receiving hopper, diluted with water, and pumped upward through a slurry discharge conduit to an aggregate separator that screens the gravel and sand for separate discharge. The remaining ASCM entrained water flows into a holding tank. The ASCM settles to the lower portion of the holding tank. The holding tank stores the remaining water for re-use diluting uncured concrete slurry. The ASCM is liquified and moved towards the ASCM discharge port by an agitator system located in the bottom of the holding tank. From the discharge, a pump delivers the liquified ASCM through a conduit for discharge. The discharged ASCM can be used as a partial replacement for Ordinary Portland Cement and as an ingredient in flowable fills.

A screen machine for resolving a raw material concentration phenomenon occurring in the screen machine, a casing body for the screen machine, and a screen basket. A diluent supplied through an external pipe enters a casing diluent pocket of a casing body. The diluent then enters a diluent supply path by passing through a diluent entrance of the screen basket through one or more casing diluent supply paths located in a casing upper flange and flows into a diluent pocket through a diluent exit of the screen basket by passing through the diluent supply path. The flowing diluent is sprayed onto a concentrated raw material through one or more open diluent spray holes formed on a spray surface of the diluent pocket. Since the concentrated raw material is diluted, the concentrated raw material can be lowered to a desired concentration, and problems of conventional screen machines can be resolved.

A screen machine for resolving a raw material concentration phenomenon occurring in the screen machine, a casing body for the screen machine, and a screen basket. A diluent supplied through an external pipe enters a casing diluent pocket of a casing body. The diluent then enters a diluent supply path by passing through a diluent entrance of the screen basket through one or more casing diluent supply paths located in a casing upper flange and flows into a diluent pocket through a diluent exit of the screen basket by passing through the diluent supply path. The flowing diluent is sprayed onto a concentrated raw material through one or more open diluent spray holes formed on a spray surface of the diluent pocket. Since the concentrated raw material is diluted, the concentrated raw material can be lowered to a desired concentration, and problems of conventional screen machines can be resolved.

A gypsum washer includes a rotating trommel receiving raw material and a flow of water, and having paddles tilted to reduce impacts of the gypsum passing through the trommel while still providing a washing action. Bentonite separates from the gypsum in the trommel, liquifies, and is released through a mesh screen at the end of the trommel separating from the gypsum. The gypsum is released from the trommel into a water fed trough, scooped from the trough, and released into a storage area. The liquified bentonite is carried by a water flow into one or more settlement tanks, and recovered for use.

A gypsum washer includes a rotating trommel receiving raw material and a flow of water, and having paddles tilted to reduce impacts of the gypsum passing through the trommel while still providing a washing action. Bentonite separates from the gypsum in the trommel, liquifies, and is released through a mesh screen at the end of the trommel separating from the gypsum. The gypsum is released from the trommel into a water fed trough, scooped from the trough, and released into a storage area. The liquified bentonite is carried by a water flow into one or more settlement tanks, and recovered for use.

A method for controlling a fiber fractionation system for fractionating an input material into a long fraction (LF) stream comprising LF fibers and a short fraction (SF) stream comprising SF fibers includes measuring an average LF fiber length at one or more locations post-fractionation, and maintaining the average LF fiber length within a target variability range by automatically altering a rotational speed of a rotor of the fiber fractionation system.