重晶石熟料水浸过程的研究

对水浸过程中影响BaS溶出的可能反应进行热力学分析，考察了浸取温度、浸取时间、液固比对水溶性钡存在形式的影响。结果表明:增加液固比、浸取温度可有效提高BaS的浸取率；浸取过程中部分溶出的钡会生成水不溶性钡，水不溶性钡总生成率随着浸取温度、时间的增加而增加，随着液固比的增加而降低水。当浸取温度为55 ℃、浸取时间为60 min、液固比为60时，BaS的浸取率为90.13 %，BaS的残留率为4.27%，BaSiO₃的生成率为3.14%，BaCO₃的生成率为1.24%，在该工艺条件下BaS有较高的浸取率、较低的残留率及较低的水不溶性钡生成率。 

Study on the Water Leaching Process of Barite Black Ash

Thermodynamic analysis of reactions affecting the dissolution of BaS during water leaching, and the effects of leaching temperature, leaching time, and liquid-solid ratio on the presence of water-soluble barium were investigated. The results show that increasing the liquid-solid ratio and leaching temperature can effectively increase the leaching rate of BaS. Part of the dissolved barium will generate water-insoluble barium, and the total formation rate of water-insoluble barium increases with the increase of the leach temperature and time, and decreases with the increase of the liquid-solid ratio.When the leaching temperature is 55 ℃, the leaching time is 60 min, and the liquid-solid ratio is 60, the leaching rate of BaS was 90.13%, the residual rate of BaS was 4.27%, formation rate of BaSiO₃ was 3.14%, formation rate of BaCO₃ was 3.14%, BaS has higher leaching rate, lower residual rate and lower water-insoluble helium formation rate under the process conditions.