铝土矿中镓的浸取工艺研究

STUDY ON TECHNOLOGY OF GALLIUM IMMERSION AND DIGESTION IN BAUXITE ORE

1.
Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
2.
Department of Applied Chemistry, Chang'an University, Xi'an 710054, China
3.
Department of Earth Sciences, Chang'an University, Xi'an 710054, China

摘要: 采用盐酸溶液介质, 研究了从铝土矿石中浸取镓的工艺条件.实验结果表明: 铝土矿石碎样在温度为5 0 0℃时恒温煅烧3h, 然后用6mol/L的盐酸浸取12h, 浸取的固液比为1∶2.5的条件下, 镓的浸取率可达94%以上.
- 铝土矿 /
- 镓 /
- 酸浸率
Abstract: The effect of immersion and digestion of gallium in bauxite by HCl is studied in this paper with the results of a series of conditional experiments. The results show that under the condition of 500 ℃, samples of bauxite are calcined for three hours, then immersed in HCl solution when concentration is 6 mol/L, and digested for twelve hours, with its ratio of solid to liquid being 1∶2.5. In this way, the ratio of digestion to total gallium in bauxite is beyond 94%.
- bauxite /
- gallium /
- ratio of acid digestion

图 1 浸取率与煅烧温度关系

Fig. 1. Ratio of immersion and digestion versus calcination temperature

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图 2 浸取率与恒温时间(a)、HCl介质浓度(b)、浸取时间(c) 的关系

Fig. 2. Ratio of immersion and digestion versus time of constant temperature (a), HCl concentration (b), time of digestion (c)

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表 1 固液比对浸取率的影响数据

Table 1. Ratio of immersion and digestion versus that of solid to liquid

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