| 四川某黏土矿中钪和钛的焙烧浸出试验研究 |
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| 引用本文： | 韩诗华,杨晓军,余新文,陈福林,何婷,喻福涛,刘志刚. 四川某黏土矿中钪和钛的焙烧浸出试验研究[J]. 矿产综合利用, 2020, 41(6): 151-156 |
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| 作者姓名： | 韩诗华 杨晓军 余新文 陈福林 何婷 喻福涛 刘志刚 |
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| 作者单位： | 四川省地质矿产勘查开发局成都综合岩矿测试中心 |
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| 基金项目： | 四川省地质矿产勘查开发局成都综合岩矿测试中心科技计划项目 |
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| 摘 要： | 以四川某地含钪、钛、稀土黏土矿为研究对象,进行钠盐焙烧-酸浸、直接酸浸、硫酸化焙烧-水浸、空白焙烧-酸浸探索试验。结果表明,直接酸浸、空白焙烧-酸浸对钪和钛的回收效果均不好。硫酸化焙烧-水浸对钛的回收效果很好,但钪的浸出率较低。钠盐焙烧-酸浸试验结果表明,适宜的焙烧条件为:碳酸钠用量80%,焙烧温度800℃,焙烧时间1h；适宜的浸出条件为:10v.%硫酸,液固比20:1,浸出温度60℃,搅拌浸出时间2h；钪的浸出率为89.98%,钛的浸出率为80.55%。液固比对钪和钛的浸出率有显著影响,增大液固比可以暂时解决硅酸造成的过滤困难的问题。
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| 关 键 词： | 黏土矿 钪 钛 焙烧浸出 硅酸 过滤困难 |
| 收稿时间： | 2020-06-04 |
| 修稿时间： | 2020-10-27 |
Experimental study on roast-leaching of scandium and titanium from a clay mine in Sichuan |
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| Han Shihu,Yang Xiaojun,Yu Xinwen,Chen FUlin,He Ting,Yu Futao,Liu Zhiguang. Experimental study on roast-leaching of scandium and titanium from a clay mine in Sichuan[J]. Multipurpose Utilization of Mineral Resources, 2020, 41(6): 151-156 |
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| Authors: | Han Shihu Yang Xiaojun Yu Xinwen Chen FUlin He Ting Yu Futao Liu Zhiguang |
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| Affiliation: | Chengdu Integrated Testing Center of Rocks and ores of Sichuan Bureau of Geology and Mineral Exploration and Development, |
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| Abstract: | For the scandium-, titanium- and rare earths-bearing clay ore from southern Sichuan, preliminary experiments of sodium salt roasting-acid leaching, direct leaching, sulfatizing roasting-water leaching, and blank roasting-acid leaching were conducted. Results showed that the recovery of scandium and titanium by direct leaching and and blank roasting-acid leaching was unsatisfactory. The recovery of titanium by sulfatizing roasting-water leaching was high, but the recovery of scandium was relatively low. Experiment results of sodium salt roasting-acid leaching showed that under roasting conditions of Na2CO3 dosage 80%, roasting temperature 800oC, roasting time 1h, and under leaching conditions of sulfuric acid concentration 10 vol. %, liquid to solid ratio 20:1, leaching temperature 60oC, agitation leaching time 2h, the leaching rates of scandium and titanium were 89.98% and 80.55%, respectively. Liquid to solid ratio has a significant effect on the leaching rates of scandium and titanium, and increasing liquid to solid ratio can temporarily solve the poor filterability problem caused by silicic acid. |
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| Keywords: | clay ore scandium titanium roasting-leaching silicic acid poor filterability |
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