Xeros, Inc.

Iain Alexander Scott

Thomas John Wallace

Siân Catherine Tedds

A method of treating a substrate with a solid particulate material and a treatment liquor comprising: agitating the substrate with said solid particulate material and said treatment liquor; and (a) separating the substrate from effluent comprising solid waste fragments derived from the substrate, said solid particulate material and the treatment liquor; (b) transferring said effluent to a hydrocyclone separator comprising an inlet, a first outlet and a second outlet, wherein the effluent is fed into the hydrocyclone separator via the inlet; (c) separating the effluent in the hydrocyclone separator to produce a first stream and a second stream, wherein the first stream comprises said solid particulate material and exits the hydrocyclone separator via the first outlet and wherein the second stream comprises treatment liquor and solid waste fragments and exits the hydrocyclone separator via the second outlet; and (d) collecting the first stream after it exits the hydrocyclone separator via the first outlet.

Method of treatment using a solid particulate material and apparatus therefor

The invention relates to an improved method and apparatus for the treatment of animal skin substrates which employs a multiplicity of solid particles. There is disclosed an apparatus for treating one or more animal skin substrates with a multiplicity of solid particles and treatment liquor comprising: a rotatably mounted drum comprising an internal volume having a first portion defining a treatment volume for retaining said animal substrates and a second portion defining a collecting volume; one or more inlets for introducing solid particles and treatment liquor into said treatment volume; a partition separating said treatment volume from said collecting volume wherein said partition allows free passage of solid particles from the treatment volume to the collecting volume and prevents the passage of the substrates therethrough; a circulation path for conveying said solid particles from the collecting volume to the treatment volume; and a pumping device arranged to pump solid particles and said treatment liquor along a portion of said circulation path.

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Rotherham, United Kingdom

Iain Alexander Scott