摘要
反浮选—冷结晶法是我国氯化钾生产的主要工艺,每年副产尾盐数百万吨。尾盐中氯化钠含量达80%以上,氯化钾和氯化镁含量较低。由于尾盐成分复杂,开发利用难度大,不少加工厂附近浮选尾盐堆积如山。如何利用浮选尾盐生产烧碱和纯碱车间所需的合格氯化钠一直是盐湖科技工作者努力奋斗的目标。文章以常温四元水盐体系相图为依据,分析浮选尾盐精制氯化钠的过程,并对分解加水量和洗涤加水量进行计算,绘制精制过程的物料平衡图。以期为浮选尾盐的利用和开发起到抛砖引玉的作用。
Reverse flotation -cold crystallization method is the main process of potassium chloride production in China, which can get the annual production of tons of salt. The content of so- dium chloride in the tail salt is over 80%, which the content of potassium chloride and magnesium chloride is low. As the tail salt composition is complex and the development and utilization is diffi- cult, many processing plants near the flotation tail salt is accumulation of mountain. It has been the goal of salt lake science and technology workers struggling how to use flotation tail salt to produce caustic soda and soda ash shop required qualified sodium chloride. Based on the phase diagram of the quaternary water and salt system at room temperature, it analyzed the process of purifying sodi- um chloride by flotation tail salt, and calculated the amount of water decomposition and the amount of water added to the process. The material balance diagram of the refining process is drawn. It viewed to play a role for the use and development of flotation tail salt.
出处
《盐科学与化工》
CAS
2017年第8期37-39,共3页
Journal of Salt Science and Chemical Industry
关键词
浮选尾盐
氯化钠
相图
flotation tail salt
sodium chloride
phase diagram
