A method of separating infill material (105) of synthetic turf is disclosed. The infill material (105) comprises sand (155), rubber (165) and fibres (135). The method comprises combining the infill material (105) with water (106) to form an infill slurry (110), and separating one or more of the sand (155), rubber (165) and fibres (135) from the infill slurry (105). A hydrocyclone (104) may be used to separate the infill slurry (105) into a fibre slurry (107) and a sand/rubber slurry (111). An separation unit (200) for carrying out the method is also disclosed.

Field flow fractionation device includes a channel switching unit for switching the connection of a second carrier fluid supply unit to any one of the second inlet port of an upper separation cell, the first inlet port of a lower separation cell, or the second inlet port of a lower separation cell. Furthermore, the second carrier fluid supply unit is connected to the second inlet port of an upper separation cell during the process of focusing to generate flow of carrier fluid counter to the flow of carrier fluid from the first inlet port within the upper separation cell, whereas the second carrier fluid supply unit is connected to the first inlet port or the second inlet port of a lower separation cell after conclusion of focusing in the upper separation cell.

Field flow fractionation device includes a channel switching unit for switching the connection of a second carrier fluid supply unit to any one of the second inlet port of an upper separation cell, the first inlet port of a lower separation cell, or the second inlet port of a lower separation cell. Furthermore, the second carrier fluid supply unit is connected to the second inlet port of an upper separation cell during the process of focusing to generate flow of carrier fluid counter to the flow of carrier fluid from the first inlet port within the upper separation cell, whereas the second carrier fluid supply unit is connected to the first inlet port or the second inlet port of a lower separation cell after conclusion of focusing in the upper separation cell.

A method of separating a shell from a seed may involve introducing a feed stream containing shells of a fruit intermixed with seeds of the fruit into a separation column at a feed stream location. The method may also involve introducing a first volume of a separation liquid into the separation column at a first liquid addition location located below the feed stream location and a second volume of the separation liquid into the separation column at a second liquid addition location located above feed stream location. The separation liquid may flow upwardly in the separation column at a rate effective to cause the seeds of the fruit to flow upwardly with the separation liquid toward a seed outlet of the separation column while the shells of the fruit flow downwardly against the upwardly flowing separation liquid toward a shell outlet of the separation column.

Aggregate washing systems are described including mechanisms for slurrying, washing and/or dewatering aggregate material.

Aggregate washing systems are described including mechanisms for slurrying, washing and/or dewatering aggregate material.

This invention relates to an inverted up-flow separator, its use in a method of recovering target mineral particles from tailings and a process for the recovery of target mineral particles from tailings using the inverted up-flow separator of the invention.

A system for separating materials from a waste stream includes multiple processing units arranged linearly, each configured to employ a density separation process. The system incorporates a paddlewheel or similar agitator in one or more of the units, thereby providing enhanced control over the agitation and forces used to separate heavier fractions from lighter fractions. By adjusting paddlewheel speed and other operational parameters, residence times in each unit can be optimized to maximize overall separation efficiency.

A washing apparatus comprises a screening apparatus having a first screening deck located below a second screening deck, wherein the first screening deck passes material that is larger than the material passed by the second screening deck. A liquid delivery system delivers liquid onto the first screening deck to wash material on the first deck. Material that passes through the first deck is conveyed upwards and delivered onto the second deck for dewatering. The apparatus is able to wash and dewater aggregate material in a single unit with a relatively small footprint and relatively high throughput.

A washing apparatus comprises a screening apparatus having a first screening deck located below a second screening deck, wherein the first screening deck passes material that is larger than the material passed by the second screening deck. A liquid delivery system delivers liquid onto the first screening deck to wash material on the first deck. Material that passes through the first deck is conveyed upwards and delivered onto the second deck for dewatering. The apparatus is able to wash and dewater aggregate material in a single unit with a relatively small footprint and relatively high throughput.