著者

中尾 智三郎

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.72, no.822, pp.927-932, 1956-12-25 (Released:2011-07-13)

参考文献数

5

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In this paper, some problems such as roasting, crushing, leaching of wolframite and the precipitation, of leached solution are treated. Some fundamental methods for the treating of scheelite are also presented. Though the efficiency of elimination of S and As is very important in the roasting process, it is also necessary to think about the relations between the roasting condition and pulverizing or solubility of elements in the ore. To the mechanism of crushing of wolframite, fundamental theory can he applied, but at the technical case mass effects must be discussed. The leaching efficiency of are depends mostly upon the grain size of are and the quantities of leaching reagents. Impurities in the are are also leached, and then crystallize out, but each impurity has essential beharior in such process. Scheelite can be refined by several technical methods. Decomposition with mineral acid is a ordinay method, but fusion or leaching with soda ash are very interesting methods.