无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ
环境·健康·安全

钛石膏综合利用及硫钙分离新工艺研究

  • 马磊 ,
  • 盛余 ,
  • 周骏宏 ,
  • 杨钰钧 ,
  • 罗辉 ,
  • 潘春瑛 ,
  • 王果
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  • 1.黔南民族师范学院,贵州都匀 558000
    2.贵州胜威福全化工有限公司
马磊(1987— ),男,硕士研究生,高级工程师,主要研究方向为微纳米粉体材料、磷化工、新能源电池材料等。

收稿日期: 2021-10-22

  网络出版日期: 2022-07-14

基金资助

贵州省科技计划项目(黔科合支撑[2021]一般307);黔南民族师范学院科研项目(QNYSKYPT2018002);黔南州科技计划项目(黔南科合工字[2019]14号);黔南师院科研创新基金(QNSY2018CG005);贵州高校乡村振兴中心资助项目

Study on new process of comprehensive utilization and separation of sulfur and calcium of titanium gypsum

  • Lei MA ,
  • Yu SHENG ,
  • Junhong ZHOU ,
  • Yujun YANG ,
  • Hui LUO ,
  • Chunying PAN ,
  • Guo WANG
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  • 1.Qiannan Normal University for Nationalities,Duyun 558000,China
    2.Guizhou Sunward Fuquan Chemicals Co. ,Ltd.

Received date: 2021-10-22

  Online published: 2022-07-14

摘要

为了解决钛石膏综合利用问题,提出一种温和的湿化学法转化法,采取铵盐循环的方式实现以低价碳酸氢铵为原料、使钛石膏固废转化为高质量碳酸钙产品,同时获得硫酸铵和富铁渣。试验结果表明,钛石膏与碳酸氢铵的质量比为1∶1、反应温度为65 ℃、反应时间为1.25 h条件下,钛石膏的转化率可以达到95%以上,将转化后的碳酸钙和铁渣等与氯化铵加热沸腾反应并回收碳酸铵,将反应完成后的固液分离,利用回收的碳酸铵与分离液体进一步反应可得纯度高达98%以上的碳酸钙和含铁量高达61%以上的铁渣。

本文引用格式

马磊 , 盛余 , 周骏宏 , 杨钰钧 , 罗辉 , 潘春瑛 , 王果 . 钛石膏综合利用及硫钙分离新工艺研究[J]. 无机盐工业, 2022 , 54(7) : 124 -128 . DOI: 10.19964/j.issn.1006-4990.2021-0639

Abstract

In order to solve the problem of comprehensive utilization of titanium gypsum,a mild wet chemical conversion method was put forward.Using low-price ammonium bicarbonate as raw material,titanium gypsum solid waste was converted into high-quality calcium carbonate products,and ammonium sulfate and iron-rich slag were obtained at the same time.The test results showed that under the conditions of mass ratio of titanigypsum to ammonium bicarbonate of 1∶1,reaction temperature of 65 ℃ and reaction time of 1.25 h,the conversion rate of titanigypsum could reach more than 95%.The converted solid calcium carbonate and iron slag were heated and boiled with NH4Cl to recover ammonium carbonate,and the solid-liquid separation after the reaction was completed.Further reaction of the recovered ammonium carbonate with the separation liquid could obtain calcium carbonate with purity of more than 98% and iron slag with iron content of more than 61%.

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