Production of copper and sulfur from copper-iron sulfides

Production of ferroboron by the silicon reduction of boric acid

Production of ferrochrome alloy

Production of ferrochromium alloys

Production of high purity iron powder

Production of iron-boron-silicon composition for an amorphous al

Production of metal such as aluminum, magnesium, silicon from me

Production of metals with low selenium contents

Production of nonferrous metals with low selenium contents

Production of tool steels using chemically prepared V.sub.2 O.su

Production of vermicular graphite cast iron

Production of vermicular graphite cast iron

Protection of silver reduction materials

Protective nickel base alloy coatings

Pu-Zr alloy for high-temperature foil-type fuel

Purification of metal containing solutions

Purification of molten aluminum using upper and lower impellers

Purification of zinc sulphate solutions

Purification process for gold-bearing iodine lixiviant

Purifying a zinc-bearing solution by cementation