矿产保护与利用2024，Vol.44Issue(6)：1-14,14.DOI:10.13779/j.cnki.issn1001-0076.2024.06.001
"双碳"战略下我国煤矸石的综合利用技术研究进展
Research and Progress of Comprehensive Utilization Technologies of China's Coal Gangue in the Context of Carbon Peaking and Carbon Neutrality
摘要
Abstract
In the context of carbon peaking and carbon neutrality,China is continuously promoting the upgrading of industrial and energy structures,advocating for green,environmentally friendly,and low-carbon development.The massive accumulation of coal gangue in our country has led to serious waste of resources and may trigger a series of environmental issues.The effective treatment and resource utilization of coal gangue have become urgent tasks for the coal industry.This paper systematically reviews the research progress of coal gangue in the fields of metal extraction,material preparation,combustion utilization,and ecological restoration.Coal gangue can recover metal elements such as aluminum,iron,and the"three rare"elements,but the recovery process is prone to produce a large amount of waste acid and slag,posing potential environmental pollution risks.In addition,coal gangue can not only serve as traditional building materials such as concrete aggregate,brick,and cement raw materials but can also be used to prepare high-value-added new materials such as porous ceramics and zeolites.The application of co-combustion technology helps to improve the thermal energy utilization efficiency of coal gangue and reduce greenhouse gas emissions.As a soil conditioner,coal gangue shows promising prospects in ecological restoration,but attention should be paid to the risk of secondary pollution caused by heavy metal ions.Based on the current problems and challenges in the treatment of coal gangue,this review systematically explores the path of future high-quality development of coal gangue,and proposes the use of a variety of utilization methods combined with the strategy to achieve the resourceful utilization of coal gangue,which in turn promotes the coordinated development of the economy,environment and social benefits.关键词
煤矸石/综合利用/金属提取/材料制备/燃烧利用/生态修复Key words
coal gangue/comprehensive utilization/metal extraction/material preparation/combustion utilization/ecological restoration分类
矿业与冶金引用本文复制引用
何占伟,何帅,王贵帅,李世豪,陈广玉,高忙忙,李会标.."双碳"战略下我国煤矸石的综合利用技术研究进展[J].矿产保护与利用,2024,44(6):1-14,14.基金项目
国家自然科学基金项目(52404420) （52404420）
甘肃省青年科技基金项目(23JRRA817) （23JRRA817）
