ore-roasting furnace
81antimony — antimonial, adj., n. /an teuh moh nee/, n. Chem. a brittle, lustrous, white metallic element occurring in nature free or combined, used chiefly in alloys and in compounds in medicine. Symbol: Sb; at. no.: 51; at. wt.: 121.75. [1375 1425; late ME… …
82Rotary kiln — A Rotary kiln is a pyroprocessing device used to raise materials to a high temperature (calcination) in a continuous process. Materials produced using rotary kilns include:* Cement * Lime * Refractories * Metakaolin * Titanium dioxide * Alumina * …
83Inventions in medieval Islam — A significant number of inventions were developed in the medieval Islamic world, a geopolitical region that has at various times extended from Al Andalus and Africa in the west to the Indian subcontinent and Malay Archipelago in the east.… …
84german process — noun Usage: usually capitalized G 1. : the process of reducing copper ore in a blast furnace after roasting 2. : the discontinuous or batch method of cupeling lead bullion …
