盐酸分解高硅混合型胶磷矿工艺研究
收稿日期: 2020-08-24
网络出版日期: 2021-02-06
基金资助
四川大学-攀枝花市科技合作专项资金(2018CDPZH-23);四川大学基本科研业务费-科研基地引导专项(20826041C4166)
Study on process of hydrochloric acid leaching high silicon mixed phosphate ore
Received date: 2020-08-24
Online published: 2021-02-06
郑东钥 , 唐盛伟 , 吕莉 . 盐酸分解高硅混合型胶磷矿工艺研究[J]. 无机盐工业, 2021 , 53(2) : 81 -83 . DOI: 10.11962/1006-4990.2020-0142
The development and utilization of middle/low-grade phosphate rock is the basic guarantee for the sustainable de-velopment of China′s phosphate chemical industry.High silicon phosphate ore was leached by hydrochloric acid,and its aci-dolysis process and filtration strengthening process were studied by single factor experiment.The results showed that under the optimal conditions,such as phosphate ore particle size was less than 180 μm,reaction temperature was 40 ℃,hydrochloric acid ratio(the mass ratio of actual hydrochloric acid input to theoretical acid consumption) was 1.1,HCl mass fraction was more than 20%,leaching time was 10 min,then the leaching extent of P2O5 was more than 99%.The leaching rate of phosphate ore in hydrochloric acid is fast and the leaching extent is high.The content of silicon dioxide in acidolysis slurry of high silicon phosphate rock is high,with small particle size and slow settling rate in the acidolysis slurry make it difficult to filter.By adding non-ionic polyacrylamide flocculant,the mass of flocculant was controlled to be 1.0% of the quality of acidolysis slurry and settling for 2 min,the filtration was strengthened significantly.
[1] | 张亚明, 李文超, 王海军. 我国磷矿资源开发利用现状[J].化工矿物与加工,2020(6):1-7. |
[2] | 何宾宾, 魏立军, 谢德龙, 等. 中国湿法磷加工产业现状与可持续发展[J]. 无机盐工业, 2020,52(1):1-4. |
[3] | 张利珍, 张永兴, 张秀峰, 等. 中国磷石膏资源化综合利用研究进展[J]. 矿产保护与利用, 2019,39(4):14-18. |
[4] | 张文静, 张建刚, 陈烨, 等. 盐酸法湿法磷酸工艺研究进展[J]. 应用化工, 2019,48(1):193-196. |
[5] | 王章露, 刘代俊, 伍洋, 等. 磷矿粉酸解特性探索[J].硫磷设计与粉体工程,2013(4):6-9. |
[6] | 黄飞舟, 武斌, 陈葵, 等. 盐酸酸解脱镁磷矿机理研究[J]. 化工矿物与加工, 2018,47(11):7-11. |
[7] | 张文静. 盐酸法湿法磷酸净化工艺研究[D]. 贵阳:贵州大学, 2019. |
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