COMPARISON BETWEEN ACIDULATION BY SULFURIC-ACID AND BY PHOSPHORIC-ACID FOR SAUDI PHOSPHATE ROCK

被引：8
作者：
ALFARISS, TF
ELNASHAIE, SSEH
ABDELRAZIK, SM
ABDELALEEM, FA
IBRAHIM, HA
机构：
[1] Phosphoric Acid Group (PAG), Chemical Engineering Department, King Saud University, Riyadh, 11421
来源：
FERTILIZER RESEARCH | 1991年 / 29卷 / 02期
关键词：
D O I：
10.1007/BF01048962
中图分类号：
S15 [土壤学];
学科分类号：
0903 ; 090301 ;
摘要：
A detailed investigation of two phosphate rock acidulation modes has been carried out in batch acidulators. The classical dihydrate process rate is affected by the coating of the rock particle by gypsum. The clean phosphoric acid process using phosphoric acid as an acidulation agent does not suffer from this inhibitory coating effect, however it is affected by the increasing viscosity of the solution during acidulation. Under practical conditions the rate of acidulation using phosphoric acid is much higher than that of the dihydrate process using sulfuric acid as an acidulation agent.
引用
收藏
页码：209 / 227
页数：19
相关论文
共 3 条
[1]  
Becker P., Phosphate and phosphoric acid, Fertilizer Science and Technology Series, pp. 35-59, (1983)
[2]  
Slack AV, Phosphoric acid, Fertilizer Science and Technology Series, (1967)
[3]  
Van der Sluis, Marchee W.G.J., Wesselingh H.A., Van Rosmalen G.M., The digestion of phosphate ore in phosphoric acid, Ind Engng. Chem Res, 26, pp. 2501-2505, (1987)
1