A novel technology for molybdenum extraction from molybdenite concentrate

作者：Cao Zhan fang^*; Zhong Hong; Qiu Zhao hui; Liu Guang yi; Zhang Wen xuan

来源：Hydrometallurgy, 2009, 99(1-2): 2-6.

DOI：10.1016/j.hydromet.2009.05.001

• Wet leaching
• Molybdenite concentrate
• Extraction
• Triotylamine
• Stripping
• Sodium chlorate

The technology of molybdenum extraction from molybdenite concentrate by using sodium chlorate has been investigated. The results show that leaching time, liquid-to-solid ratio, leaching temperature, agitation speed, sodium chlorate and hydrochloric acid concentration have significant effect; optimum process operating parameters were established as follows: time: 4 h; hydrochloric acid concentration: 20%; liquid-to-solid ratio: 10: 1: temperature: 70 degrees C: agitation speed: 500 rpm: and the molar ratio of NaClO(3) to MoS(2): 3.21. Under these experimental conditions, the extraction of molybdenum is greater than 98%. The mixture of 30% triotylamine and 20% sec-Caprylic alcohol diluted kerosene oil is an effective extractant of molybdenum: the molybdenum extraction efficiencies in the examined conditions were about 99.6% under conditions of 0: a ratio of 1:1, hydrochloric acid 60 g/L for 10 min at room temperature. Stripping of molybdenum to aqueous phase was efficient when 18% ammonia liquor were applied. The molybdenum stripping efficiencies in the examined conditions were about 99.5% under conditions of 0: a ratio of 1:1 for 10 min at 40 degrees C.

• 出版日期2009-10
• 单位中南大学