中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 23 No. 1 January 2013 |
（1. School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China;
2. Key Laboratory for Metallurgy and Material Processing of Rare Metals,
Central South U）
Abstract:A novel method, bath smelting process, was developed to treat molybdenite concentrate aiming at the existing problems of traditional process. To understand the dissolving behavior of MoS2 in white matte, the binary phase diagram of Cu2S-Mo2S was measured by the cooling curve method. The result shows that this system is a simple binary eutectic with a eutectic temperature of (1117.0±3.0) °C and a eutectic composition of (1.70±0.20)% MoS2 in mass fraction. When the MoS2 addition exceeds 4.48%, MoS2 and Cu2S can form the ternary compound containing CuMo2S3 or Cu2Mo6S8. In the temperature range of copper smelting, 1200-1300 °C, molybdenite can dissolve in the cuprous sulfide. At 1200 °C, the solubility of molybdenite can reach 14.8%.
Key words: binary system; Cu2S-MoS2; bath smelting process; solubility; eutectic; molybdenite
