Has been used for the flotation of copper sulphides in the presence of zinc and iron sulfides.

Has been used for the flotation of copper sulphides in the presence of zinc and iron sulfides.

Fluid hydrocarbon byproducts are drawn off for condensation and recovery, and solid zinc sulphides are also recovered.

The invention relates to a method of selective extraction of europium(III) and/or yttrium(III) ions from luminophore dust or sludge, the major components of which are oxides and sulphides of zinc, cadmium, yttrium and europium.

Use of zinc sulfide for safety related products dates back to the early 1900’s.

Use of zinc sulfide for safety related products dates back to the 1930s.

When zinc and lead sulfides are present in profitable amounts they are regarded as ore minerals.

Indeed, the carbonates, oxides and sulphides of zinc are sparingly soluble, and therefore zinc is present in natural waters at low concentrations.

When zinc and lead sulfides are present in profitable amounts they are regarded as ore .

The carbonates, oxides, and sulphides of zinc are sparingly soluble, and therefore zinc is present in natural waters at low concentrations.

New and improved processes and compositions for use in flotation recovery of metal values from base metal zinc sulfide ores are disclosed.

The mining of a zinc and copper deposit from 1942 to 1979 produced nearly 11 Mt of waste that generates acid mine drainage.

The present invention relates to synthesis of copper zinc tin sulfide, Cu2ZnSnS4 (CZTS) in an ionic liquid, using a mixture of copper-containing sulfides, zinc-containing sulfides, and tin-containing sulfides.

Has been used for the flotation of copper sulphides in the presence of zinc and iron sulfides.

Has been used for the flotation of copper sulphides in the presence of zinc and iron sulfides.