磷酸高效分解磷矿实验研究
收稿日期: 2020-03-26
网络出版日期: 2020-09-27
基金资助
国家重点研发计划“固废资源化”重点专项(2018YFC1900206)
Experimental study on high efficiency decomposition of phosphate rock by phosphoric acid
Received date: 2020-03-26
Online published: 2020-09-27
尹伟 , 黄进 , 解田 , 何兵兵 . 磷酸高效分解磷矿实验研究[J]. 无机盐工业, 2020 , 52(9) : 34 -36 . DOI: 10.11962/1006-4990.2019-0511
In order to improve the production process of wet-process phosphoric acid,improve the quality of by-product phos-phogypsum,and reduce the economic and environmental pressure caused by the storage of solid by-products of wet-process phosphoric acid,the experiment of phosphoric acid decomposition of phosphate rock to produce phosphoric acid was carried out.Using a phosphate rock in Guizhou,China as the main raw material,the reaction conditions of pre-decomposition of phos-phate rock by wet-process phosphoric acid were studied.The optimum reaction conditions for the decomposition of phos-phate rock by wet process phosphoric acid were determined by single factor test,i.e.reaction temperature was 75 ℃,mass ra-tio of phosphoric acid to phosphate rock(liquid-solid ratio) was 9,reaction time was 3 h and mass fraction of phosphoric acid was 30%(in terms of P2O5).Under these conditions,the decomposition rate of phosphate rock was 98.62%.
[1] | 傅忠德. 浅谈湿法磷酸的生产方法[J]. 化学工程与装备, 2010(7):138-139. |
[2] | 邵一鑫, 张泽强, 孙桦林, 等. 氢氧化钠分解磷石膏工艺研究[J]. 无机盐工业, 2017,49(9):52-54. |
[3] | 李美. 磷石膏品质的影响因素及其建材资源化研究[D]. 重庆:重庆大学, 2012. |
[4] | 李相国, 陈嘉懿, 马保国, 等. 粒度分布对磷石膏-石灰-粉煤灰胶结材物理性能的影响[J]. 化工学报, 2012,63(S1):230-234. |
[5] | 高洁, 赵国彦. 磷石膏再结晶体力学特性试验研究[J]. 矿冶工程, 2013,33(2):18-21. |
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