(中南工業(yè)大學有色冶金系，長沙410083)
摘 要: 采用氯化-干餾法對柿竹園含鈹含氟鉍精礦進行了研究，結(jié)果表明：采用循環(huán)浸出和低酸度、高金屬離子濃度體系，鉍的浸出率達99. 22%，浸出液含鉍接近300 g/ L。在一定的干餾條件下，氯化鉍的干餾率為98%，其純度達99%以上。該工藝將鈹和氟富集在浸出渣和干餾渣中，使其污染減小到最低限度。
關(guān)鍵字: 鉍精礦 鈹 氟 氯化-干餾法 氯化鉍
TREATING SHIZHUYUAN BISMUTH CONCENTRATE
CONTAINING BERYLLIUM AND FLUORINE
（Department ofNonferrous Metallurgy,
Central South University of Technology, Changsha 410083）
Abstract:The extraction of bismuth from Shizhuyuan bismuth concentrate containing beryllium and fluorine through chlorination-dry distillation process was studied in detail. Experimental results showed that 99. 22% of Bi was leached in dilute HCl solution with high metal ion concentration by the method of circulatory leaching, and bismuth ion concentration reached about 300 g/L in the leach solution. The dry distillation ratio of BiCl3was up to 98% under the optimum dry distillation conditions. The beryllium and fluorine were concentrated in the leached residue and the dry distillation residue, so the pollution of beryllium and fluorine can be fundamentally eliminated through this technology.
Key words: bismuth concentrate beryllium fluorine chlorination-dry distillation process bismuth trichloride
