. . "109685002"@en-us . "13442476-n"^^ . "112682152"@en-us . . "0"^^ . . . "calcination"@en-us . . "calcination"^^ . . . "0"^^ . "the conversion of metals into their oxides as a result of heating to a high temperature"@en-us . . . "113442476"^^ . .