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秦岭金矿四范沟尾矿制砖试验研究

  • 作者:
  • 高晓杰|马骁|徐亚娟|张亚丽|刘磊
  • 作者单位:
  • 河南省地质研究院&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|河南省地质研究院&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|河南省地质局地质灾害防治中心&河南省地质环境生态修复工程技术研究中心|河南省地质局地质灾害防治中心&河南省地质环境生态修复工程技术研究中心|河南省地质局地质灾害防治中心&河南省地质环境生态修复工程技术研究中心|河南省地质局地质灾害防治中心&河南省地质环境生态修复工程技术研究中心
  • 基金项目:

  • 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)
  • 详细信息:

  • 作者简介:
  • 高晓杰(1987—),女,工程师,硕士,从事地质调查与矿产勘查研究工作;E-mail:8487455@qq.com
  • 通讯作者:
  • 刘磊(1987—),男,高级工程师,硕士,从事地质调查与矿产勘查研究工作;E-mail:527237217@qq.com
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Experimental study on brick making from Sifangou tailings in Qinling Gold Mine

  • English Author:
  • Henan Academy of Geology&Ministry of Natural Resources,Zhongyuan Urban Agglomeration Multi-element Urban Geological Big Data Engineering Technology Innovation Center|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|Geological Disaster Prevention and Control Center of Henan Provincial Bureau of Geology&Henan Province Geological Environment Ecological Restoration Engineering Technology Research Center|Geological Disaster Prevention and Control Center of Henan Provincial Bureau of Geology&Henan Province Geological Environment Ecological Restoration Engineering Technology Research Center
  • Unit:
  • 摘要
  • 在线预览
  • 参考文献

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1 050 ℃,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。

关键词:

黄金尾矿;工艺矿物学;烧结砖;免蒸免烧砖;综合利用

Abstract:

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,1 050 ℃ 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.

Keywords:

gold tailings;process mineralogy;sintered brick;steaming-free and baking-free brick;comprehensive utilization