超低灰煤制备过程中硅元素迁移研究  

Study on Migration of Silicon in Preparation of Ultra-low Ash Coal

作　　者：王超越 邹心航 闫雪玲 刘明轩 余游 赵振宁[1] WANG Chao-yue;ZOU Xin-hang;YAN Xue-ling;LIU Ming-xuan;YU You;ZHAO Zhen-ning(Department of Chemical Engineering,University of Science and Technology Liaoning,Liaoning Anshan 114000,China)

机构地区：[1]辽宁科技大学化学工程学院,辽宁鞍山114000

出　　处：《广州化工》2021年第16期80-82,共3页GuangZhou Chemical Industry

基　　金：辽宁科技大学大学生创新创业训练计划项目(201910146035)。

摘　　要：实验通过研究酸碱法中的碱洗和酸洗的条件下,并保证控制不变的量为200目的煤粉和浓度为20%的氢氧化钠溶液,来探究反应时间对硅元素变化的影响以及反应过程中硅元素发生的化学反应和形式转变。最终发现,在碱洗过程中,所除掉的主要是矿物质中的硅元素,且硅元素含量会随时间发生上下波动,这主要是由于随着时间的变化,硅元素的存在形式之间相互转变所引起的,并最终以最为稳定的形式而存在。The conditions of alkali washing and pickling in acid-base method were studied,the control of the same amount of 200 mesh coal powder and concentration of 20%sodium hydroxide solution was ensured,and the effect of reaction time on the change of silicon and the chemical reaction and transformation of silicon during the reaction was investigated.It was found that in the process of alkaline cleaning,the main element removed was silicon in the mineral,and the content of silicon fluctuated up and down with time,mainly because of the change with time,caused by the transformation of the forms of silicon into each other,and eventually into the most stable form.

关 键 词：超低灰煤 碱洗 硅元素 

分 类 号：TQ533.1[化学工程—煤化学工程]