Beneficiation of a refractory tetradymite ore

被引：0
|
作者：
Feng H. [1 ]
Che X. [1 ]
Zheng Q. [1 ]
Ma L. [1 ]
Wang L. [1 ]
机构：
[1] Mineral Resource & Metallurgical Materials Research Institute, General Research Institute for Nonferrous Metals, Beijing
来源：
Xiyou Jinshu/Chinese Journal of Rare Metals | 2016年 / 40卷 / 07期
关键词：
Diethyldithiocarbamate; Magnetic-flotation combined separation; Rougher concentrate regrinding; Tetradymite;
D O I：
10.13373/j.cnki.cjrm.2016.07.009
中图分类号：
学科分类号：
摘要：
Tellurium was widely applied in the area of metallurgy, electronics, chemicals, glass, ceramic, pharmaceutical and so on. Especially, it was irreplaceable in the new energy and advance materials, national defense and cutting-edge technology, which was considered an important strategic resource by many countries and governments. A certain poor tellurium ore had a close associated relationship with each other and owned complicated ore nature. Moreover, some pyrrhotite in magnetism and flotation were similar to tetradymite, which increased the difficulty in separation from each other. In view of its characteristics, the process of magnetic-flotation separation and rough concentrate regrinding were adopted to solve the common problem of the separation of tetradymite and pyrrhotite. The test selected the combined collector diethyldithiocarbamate and butyl xanthate as the collector, calcium oxide, sodium silicate and sodium sulfite as the depressant. The technical indexes such as the grade of Te concentrate 18.94% and the recovery 91.40% were obtained by twice roughing, once scavenging and twice the rougher concentrate cleaning after secondary grinding. The process of magnetic-flotation separation and the rougher concentrate regrinding improved the flotation indexes of tetradymite, realizing efficient recovery of refractory tetradymite ore in the ore, which made it possible to exploit the tetradymite ore in this place. © Editorial Office of Chinese Journal of Rare Metals. All right reserved.
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页码：687 / 694
页数：7
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