Processing of Copper-Containing Molybdenite Concentrates by Roasting with Sodium Salts to Produce Technical Molybdenum Trioxide

被引：1
作者：
Aleksandrov, P. V. [1 ]
Medvedev, A. S. [1 ]
Imideev, V. A. [1 ]
Berbenev, A. O. [1 ]
Kochurov, K. I. [2 ]
机构：
[1] Natl Res Technol Univ MISiS, Moscow, Russia
[2] JSC Wolfram, Krasnogorsk, Russia
来源：
METALLURGIST | 2021年 / 64卷 / 9-10期
关键词：
molybdenum trioxide; molybdenum; molybdenite concentrate; copper; low-temperature roasting; sodium chloride; sodium carbonate; processing; extraction;
D O I：
10.1007/s11015-021-01075-3
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The paper discusses methods of processing copper-containing molybdenite concentrates. A process flow diagram based on roasting with sodium chloride (or carbonate) and subsequent water leaching is presented. The chemistry of sulfide interaction with salt additives is described. The effect of the roasting temperature on copper and molybdenum distribution among the process products was studied. It was found that during roasting, 75 to 80% of molybdenum is converted from the sulfide into trioxide form, while copper predominantly forms water-soluble compounds and, thus, enables extraction by water leaching. It was established that the cake obtained as a result of water leaching meets the requirements for raw materials used for ferromolybdenum smelting.
引用
收藏
页码：940 / 948
页数：9
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