秦岭金矿四范沟尾矿制砖试验研究  

Experimental study on brick making from Sifangou tailings in Qinling Gold Mine

作　　者：高晓杰 马骁 徐亚娟 张亚丽 刘磊 Gao Xiaojie;Ma Xiao;Xu Yajuan;Zhang Yali;Liu Lei(Henan Academy of Geology;Ministry of Natural Resources,Zhongyuan Urban Agglomeration Multi-element Urban Geological Big Data Engineering Technology Innovation Center;Geological Disaster Prevention and Control Center of Henan Provincial Bureau of Geology;Henan Province Geological Environment Ecological Restoration Engineering Technology Research Center)

机构地区：[1]河南省地质研究院 [2]自然资源部中原城市群多要素城市地质大数据工程技术创新中心 [3]河南省地质局地质灾害防治中心 [4]河南省地质环境生态修复工程技术研究中心

出　　处：《黄金》2024年第3期85-90,共6页Gold

基　　金：河南省地质研究院科研项目(2023-331-XM027-KT02);2022年度河南省重点研发项目(221111320600)。

摘　　要：为探索秦岭金矿四范沟尾矿综合利用方法,以工艺矿物学特征为基础,分别进行制备烧结砖和免蒸免烧砖试验。结果表明:该尾矿矿物组成及粒度适宜制砖;制备烧结砖最佳试验条件为膨润土添加量15%,成型水分7%,成型压力15 MPa,升温速率10℃/min,烧成温度1050℃,保温时间2 h,获得的烧结砖达到MU25级别,可在严重风化地区使用;免蒸免烧砖最佳试验条件为成型压力25 MPa,成型水分18%,水泥配比20%,且各因素对试样抗压强度影响程度依次为水泥配比>成型压力>成型水分。研究结果为秦岭金矿四范沟尾矿制砖及综合利用提供了依据与参考。In order to explore the comprehensive utilization method of Sifangou tailings,Qinling Gold Mine,tests on the preparation of sintered brick and steam-free and baking-free brick based on the process mineralogical characteristics were carried out.The results show that the composition and particle size of the tailings makes them suitable for brick making;the optimal test conditions for sintered brick preparation are 15%bentonite ratio,7% molding moisture,15 MPa molding pressure,10℃/min heating rate,1050℃ sintering temperature and 2 h heat preservation time.The sintered brick can reach Grade MU25 and can be used in severe weathering regions;the optimal test conditions for steam-free and baking-free brick preparation are 25 MPa molding pressure,18% molding moisture,and 20% cement ratio.The influence of each factor on the compressive strength of the sample is as follows:cement ratio>molding pressure>molding moisture.This paper provides a basis and reference for tailings brick making and comprehensive utilization of Sifangou tailings in Qinling Gold Mine.

关 键 词：黄金尾矿 工艺矿物学 烧结砖 免蒸免烧砖 综合利用 

分 类 号：TD926.4[矿业工程—选矿]