摘要
这是一篇矿物加工工程领域的论文。煤炭资源在开采和储存过程中会形成大量的氧化煤,造成煤炭资源的浪费和环境污染,从氧化煤中提取腐植酸可以达到氧化煤资源高值化利用的目的。为进一步提高氧化煤中腐植酸的含量和利用效率,本文采用H_(2)O_(2)氧化、浓H_(2)SO_(4)氧化以及反浮选三种手段对氧化煤样品进行预处理,考查了其对氧化煤中腐植酸含量的影响并运用傅立叶红外光谱(FTIR)分析了含氧官能团的变化情况。实验结果表明,氧化和反浮选均能提高腐植酸的利用效率,使用H_(2)O_(2)氧化后,煤样中腐植酸含量由21.58%提高到43.62%;通过浓H_(2)SO_(4)氧化后,腐植酸含量达到48.51%,腐植酸提取率达到81.08%。经反浮选处理提取腐植酸,可脱除部分矿物质,腐植酸富集在沉物中,腐植酸提取率也有提高,经氧化处理后提取的腐植酸含氧基团增加,亲水性增强。
This is an essay in the field of mineral processing engineering.During the mining and storage process of coal resources,a large amount of oxidized coal is formed,resulting in waste of coal resources and environmental pollution.Extracting humic acid from oxidized coal can achieve the goal of high-value utilization of oxidized coal resources.In order to further improve the content and utilization efficiency of humic acid in oxidized coal,this article uses three methods:H_(2)O_(2)oxidation,concentrated H_(2)SO_(4)oxidation,and reverse flotation to pretreat oxidized coal samples.The influence of these methods on the content of humic acid in oxidized coal was investigated,and the changes in oxygen-containing functional groups were analyzed using Fourier transform infrared spectroscopy(FTIR).The experimental results show that both oxidation and reverse flotation can improve the utilization efficiency of humic acid.After using H_(2)O_(2)oxidation,the humic acid content in coal samples increases from 21.58%to 43.62%;After oxidation with concentrated H_(2)SO_(4),the content of humic acid reached 48.51%,and the extraction rate of humic acid reached 81.08%.Extracting humic acid through reverse flotation treatment can remove some minerals,and humic acid is enriched in sediment.The extraction rate of humic acid is also improved.After oxidation treatment,the extracted humic acid has an increase in oxygen-containing groups and enhanced hydrophilicity.
作者
司金凤
李星明
Si Jinfeng;Li Xingming(School of Metallurgy and Automotive Engineering,Shandong Vocational College of Industry,Zibo,Shandong,China;Shanxi Lu′an Coal-Based Clean Energy Co.,Ltd.,Changzhi,Shanxi,China)
出处
《矿产综合利用》
CAS
北大核心
2023年第6期154-158,183,共6页
Multipurpose Utilization of Mineral Resources
基金
国家自然科学基金(51674174)。
关键词
矿物加工工程
氧化煤
腐植酸
提取率
氧化
浮选
Mineral processing engineering
Oxidized coal
Humic acid
Extraction rate
Oxidation
Flotation
作者简介
司金凤(1989-),女,讲师,硕士,研究方向为冶金生产技术。
