重晶石表面改性工艺  

Study on surface modification of barite

作　　者：王健[1] 丁浩[1] 周红[1] 

机构地区：[1]中国地质大学(北京)材料科学与工程学院,北京100083

出　　处：《中国粉体技术》2017年第2期62-64,98,共4页China Powder Science and Technology

摘　　要：通过控制单因素实验条件,油酸钠作为改性剂,对重晶石进行疏水调控,探究其改性后的效果与改性剂用量、改性温度、改性时间以及BaSO_4质量分数之间的关系。结果表明:重晶石改性的优化条件是:油酸钠的质量分数为1.0%、改性时间为15 min、改性温度为80℃,BaSO_4的质量分数为30%;获得改性后的重晶石润湿接触角度为128°,使重晶石表面从亲水性转化为疏水性。By controlling single experimental conditions, barite was prepared through hydrophobic agglomeration with sodium oleate. The relationships among the after-modified barite and the amount of sodium oleate, modification temperature, modification time, slurry concentration were expounded. The results show that the optimal modification conditions are as follow： the amount of sodium oleate 1.0%, modification time 15 rain, modified temperature 80 ℃, the concentration of slurry 30%. The wetting contact angle of after-modified barite is 128 ° , the surface of barite is changed into hydrophobic.

关 键 词：重晶石 油酸钠 表面改性 疏水调控 

分 类 号：TQ110.2[化学工程—无机化工]