磷酸高效分解磷矿实验研究

doi:10.11962/1006-4990.2019-0511

Abstract

Abstract:

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%.

Key words: wet-process phosphoric acid, decomposition of phosphate rock, phosphogypsum

CLC Number:

TQ126.35

Yin Wei,Huang Jin,Xie Tian,He Bingbing. Experimental study on high efficiency decomposition of phosphate rock by phosphoric acid[J]. Inorganic Chemicals Industry, 2020, 52(9): 34-36.

主要成分	质量分数/%	主要成分	质量分数/%
P₂O₅	33.65	Fe₂O₃	0.66
MgO	0.93	Al₂O₃	0.82
SiO₂	8.00	Na₂O	0.37
CaO	47.46	K₂O	0.25

[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. doi: 10.3969/j.issn.0438-1157.2012.z1.040
[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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National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Experimental study on high efficiency decomposition of phosphate rock by phosphoric acid

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