HF-HNO_(3)法制备超纯煤的实验研究  

Experimental Study on the Preparation of Ultra-pure Coal via HF-HNO_(3)Method

作　　者：李伟 LI Wei(Zhejiang Coal Geological Exploration Institute,Hangzhou,Zhejiang 310000)

机构地区：[1]浙江煤炭地质勘查院,浙江杭州310000

出　　处：《中国煤炭地质》2025年第3期71-75,50,共6页Coal Geology of China

基　　金：浙江煤炭地质局科技项目“煤中可燃硫的快速测定研究”。

摘　　要：以内蒙古太西无烟煤为研究对象,采用HF-HNO_(3)法制备超纯煤,通过正交实验方法,分别分析了HF/HNO_(3)浓度、反应温度和反应时间等因素对超纯煤灰分的影响,获得了制备超纯煤的最佳实验条件,得到了灰分为0.03%的超纯煤;同时对HF酸的回收工艺进行改进,明显提升回收效果。Taking Taixi anthracite in Inner Mongolia as the research object,ultra-pure coal was prepared by the HF-HNO_(3)method.Using orthogonal experimental method,the effects of HF/HNO_(3)concentration,reaction temperature,and reaction time on the ultra-pure coal ash content were investigated,the best experimental conditions for preparing ultra-pure coal were determined,and the ultra-pure coal with ash content of 0.03%was determined;At the same time,the recovery process of HF acid was improved,and the recovery effect was more significant.

关 键 词：超纯煤 HF-HNO_(3)法 正交实验 

分 类 号：TD94[矿业工程—选矿]