Method for the removal of organic substances from sodium...

Method for the separation of precipitated aluminium...

Method for the settling of scale forming suspensions such as...

Method for treating fgd waste to produce alpha plaster and...

Method for treating ground crude potassium salts that...

Method for treatment of bayer liquor

Method for working up fluorine-containing residues

Method of and apparatus for extracting alumina from bauxite

Method of and apparatus for the removal of sulfur dioxide...

Method of and apparatus for thickening red muds derived from...

Method of baking plaster at low temperatures

Method of burning gypsum

Method of calcining gypsum

Method of calcining gypsum rock

Method of crystallizing aluminum sulphate solutions to form...

Method of decomposing a carbonate or reducing an oxide

Method of decreasing the organic substance of alum earth...

Method of dehydrating carnallite

Method of forming a hydrated lime for acid gas removal from...

Method of making ".beta."-alumina