Walter Curlook has written:

'Pyrometallurgy' -- subject(s): Congresses, Pyrometallurgy, Roasting (Metallurgy), Metallurgy, Extraction (Chemistry)

1) Concenteration by gravity seperation

2) Roasting and Calcination

3) Smelting

R. E. Peterson has written:

'Beneficiation of a western Mesabi nonmagnetic taconite after reduction roasting with lignite' -- subject(s): Lignite, Ore-dressing, Roasting (Metallurgy), Taconite

'Low-rank coals and waste materials for reduction roasting and metallization of iron oxides' -- subject(s): Coal, Deoxidizing of metals, Iron, Iron oxides, Metallizing, Metallurgy, Waste products

Crushing Android grinding, juggimg Android shaking, froth floatation process, roasting, smelting, slag, bessemrization, refining

Immo H. Redeker has written:

'Beneficiation of olivine for foundry sand by calcining' -- subject(s): Foundry Sand, Olivine, Roasting (Metallurgy)