利用水力旋流器对广西典型钙基膨润土的湿法提纯研究

Study on Wet-way Purification of Guangxi Typical Ca-bentonite by Hydrocyclone

利用水力旋流器对广西典型钙基膨润土进行湿法提纯试验研究,主要探讨了给矿浓度、给矿压力和底流口直径对膨润土提纯效果的影响。研究结果表明,给矿浓度、给矿压力及底流口直径三者间存在一定交互作用。该膨润土的最佳提纯条件为:给矿浓度为15%,底流口直径为6 mm,给矿压力为0.35 Mpa;膨润土经提纯处理后各项性能指标均获得相应提高,其蒙脱石含量由62.50%提高到80.03%,阳离子交换量从41.87 mmol/100 g提高到76.63 mmol/100 g,胶质价从46.50 m L/15 g提高到60.0 m L/15 g。

In this paper, the typical Ca-bentonite of Guangxi was purified by using hydrocyclone, the influence of feed concentration, feed pressure and apex diameter on the purification of bentonite has been studied. The results showed that there was interaction among feed concentration, feed presure and apex diameter. In this experiment, the optimum conditions for purifying the Ca-bentonite were as that feed concentration, apex diameter and feed pressure were 15% ,6ram and O. 35 MPa respectively. The performance indexes of bentonite had been improved after purified such as that the content of montmorillonite was increased from 62.50% to 80. 03%, the cation exchange capacity was increased from 41.87 mmol/100 g to 76. 63 mmoL/100 g and the colloid index was increased from 46. 50 mL/ 15 g to 60. 0 mL/15 g.