Graphite crucible, wanda kuma aka sani da narkakken ladle na jan ƙarfe, narkakken jan ƙarfe, da sauransu, yana nufin nau'in crucible da aka yi ta hanyar harbin graphite, yumbu, silica da kakin zuma azaman albarkatun ƙasa.Ana amfani da ginshiƙan ginshiƙan ginshiƙai don narka tagulla, tagulla, zinare, azurfa, zinc da gubar da sauran ƙarfe waɗanda ba na ƙarfe ba da duk...
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