Investigations on Roasting and Leaching of a Mica Rough Concentrate Containing Rubidium and Lithium
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摘要:
采用焙烧-水浸联合工艺从某含铷和锂的云母粗精矿中浸出铷和锂，主要考察了氯化物添加剂用量、焙烧温度、焙烧时间、浸出温度、浸出时间等因素对铷和锂浸出效果的影响。确定的最佳工艺参数为：氯化物添加剂用量为原矿质量的90%、焙烧时间1.5 h、焙烧温度950℃、浸出温度30℃（室温）、浸出时间1.5 h，在最佳工艺参数条件下，铷浸出率大于95%，锂浸出率大于90%，浸出效果较好。
Abstract:This paper investigated leaching rubidium and lithium from a mica rough concentrate by roasting-water leaching combined process. The effects of additives dosage, roasting temperature, roasting time, leaching temperature and leaching time on leaching rates of rubidium and lithium were studied. As a result, the optimal process parameters were determined as additives dose of 90% (w.t) ore, roasting temperature of 950℃, roasting time of 1.5 h, leaching temperature of 30℃ and leaching time of 1.5 h. Under these conditions, the leaching rates of rubidium and lithium were larger than 95% and 90%, respectively.
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Key words:
- mica rough concentrate /
- rubidium /
- lithium /
- roasting /
- leaching
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表 1 原料多元素分析结果 /%
Table 1. Multi-element analysis of the raw material
成分 Rb2O Li2O Cs2O K2O Na2O Al2O3 Cu Pb Zn TFe SiO2 CaO 含量 0.42 0.28 0.04 8.35 2.68 24.62 0.003 7 0.014 0.022 0.27 50.21 0.21 
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