钨矿

The purity 99.99% of scandium oxide(Sc 2O 3) was prepared from tungstenic slag with extraction process.

用萃取法从矿渣制得纯99．99％氧化钪。

The major metal minerals recycled include tantalum niobite, fine spar, tantalum aeschynite, wolframite and scheelite, which have large density of generally 5 to 7.

主要回收金属矿物钽铌铁矿、细晶石、钽易解石、黑矿、白矿，密比较大，一般5~7。

Under hygrothermal climate, a series of physicochemical changes take place on huebnerite-scheelite deposit,containing polymetallic sulphi-des and slich a deposit forms a secondary tungsten deposit.

在湿气候条件下，含多金属硫化物锰-白矿矿床会产主一系列物理、化学变化，形成次生矿床。