钾肥生产尾盐水兑卤实验及实际应用研究  

Experiment and Practical Application of Mixing Tail Brine in Potash Fertilizer Production

作　　者：陈陟 汪国柱 哈存月 Chen Zhi;Wang Guozhu;Ha Cunyue(The Seventh Geological Exploration Institute of Qinghai Province,Qinghai,816000)

机构地区：[1]青海省第七地质勘查院,青海816000

出　　处：《当代化工研究》2023年第10期90-93,共4页Modern Chemical Research

摘　　要：钾肥生产中产生大量的含钾尾盐水,直接排放会造成环境污染,如果直接回收会有一部分氯化钾因形成钾石盐。为了解决这个问题,本文研究一种将尾盐水及原矿生产车间产生的老卤水进行兑卤的工艺,高浓度氯化镁的老卤液使氯化钠快速析出,而且卤水中氯化钾与氯化镁的大量析出,减少氯化钠的含量,获得优质的光卤石矿。实验结果表明加大兑卤比例,就会加快固样结晶速率,可以在短时间内进行成矿。同时将本文的研究规律用于指导工业实际操作,获得较好的选矿结果。In the production of potassium fertilizer,a large amount of potassium-containing tail brine is produced.Direct discharge will cause environmental pollution.If directly recycled,part of potassium chloride will form potassium stone salt.In order to solve this problem,this paper studies a brine mixing process of tail brine and old brine produced in the raw ore production workshop.The high concentration of old brine with magnesium chloride precipitates sodium chloride quickly,and a large amount of potassium chloride and magnesium chloride precipitates in the brine,reducing the content of sodium chloride and obtaining high-quality carnallite ore.The experimental results show that the crystallization rate of solid sample can be accelerated by increasing the ratio of halogen and mineralization can be carried out in a short time.At the same time,the research rule of this paper is used to guide the industrial practice and obtain better results.

关 键 词：氯化钾 兑卤 尾盐水 

分 类 号：X786[环境科学与工程—环境工程]