摘要
以新疆某盐湖卤水为研究对象，模拟当地气候条件进行30℃等温蒸发试验，通过对卤水蒸发析盐过程的物料衡算和化学分析，了解卤水蒸发浓缩过程的析盐规律为：石盐→石盐与硫酸镁→钾芒硝与水氯镁石→水氯镁石→老卤。在失水率小于40%的范围内主要析出石盐，失水率在40%~50%范围内主要析出石盐与硫酸镁的混合盐，失水率在50%~75%范围内主要析出钾芒硝与水氯镁石，此阶段钾离子的析出率为81%，失水率在75%以上主要析出水氯镁石，蒸发后续阶段的老卤中镁得到浓缩。
We have a salt lake brine Xinjiang as experimental study object. We simulated the local weather conditions and made 30 ℃ isothermal evaporation experiment brine. Through the material balance and chemical analysis of brine evaporation process, understand the salt out of brine evaporation concentration process crystallization law of salts： salt, salt and magnesium sulfate, potassium sulfate and magnesium chlo-ride, magnesium chloride, the old brine. The main precipitation in the range of halite water loss rate of less than 40%, mixed salt water loss rate is in the range of 40%--50%main precipitation of halite and magnesium sulfate, water loss rate is in the range of 50%--75% main precipitation of potassium sulfate and magnesium chloride, potassium ion precipitation in this stage was 81%, the rate of water loss in more than 75% main condensate water chloride magnesia, bittern evaporation and subsequent stages of magnesium are concentrat-ed in.
出处
《浙江化工》
CAS
2015年第5期36-39,共4页
Zhejiang Chemical Industry
关键词
卤水
等温蒸发
析盐规律
brine
isothermal evaporation
salting
