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

无机盐工业 ›› 2013, Vol. 45 ›› Issue (3): 25-.

• 论文 • 上一篇    下一篇

钾长石分解制备硫酸钙晶须工艺研究

李延峰1,张予新2,张光旭1,戴正旭1   

  1. 1.武汉理工大学化学工程学院,湖北武汉 430070;2.河南化工职业学院
  • 出版日期:2013-03-10 发布日期:2013-03-12

Study on preparation technology of calcium sulfate whisker by decomposition of potassium feldspar

Li Yanfeng1,Zhang Yuxin2,Zhang Guangxu1,Dai Zhengxu1   

  1. 1.School of Chemical Engineering and Technology,Wuhan University of Technology,Wuhan 430070,China;
    2.Henan Vocation College of Chemical Technology
  • Published:2013-03-10 Online:2013-03-12

摘要: 以萤石为助剂在硫酸存在下分解钾长石,分解后的固体采用常压酸化法制备硫酸钙晶须。考察了反应温度、反应时间、固液比、硫酸用量、添加剂用量等因素对制备硫酸钙晶须的影响。结果表明:在反应温度为103 ℃、反应时间为1 h、固体与硫酸与水的质量比为1∶4.4∶35、添加剂硫酸镁用量为0.12 g(占原料质量的2.4%)条件下,所得产品产率为27.36%、长径比为65、白度为65.3%、纯度为95.61%。

关键词: 钾长石, 硫酸钙晶须, 常压酸化法, 长径比

Abstract: Potassium feldspar was decomposed in the presence of fluorite accessory ingredient and sulfuric acid,and the solid decomposition products were used to prepare calcium sulfate whisker by atmospheric acidification method.The influences of amount of sulfuric acid,reaction temperature,solid to liquid ratio,reaction time,and amount of additive on the preparation of calcium sulfate whisker were studied.Results showed:under the conditions of reaction time of 60 min,reaction temperature of 103 ℃,mass ratio of solid,sulfuric acid,and water of 1∶4.4∶35,and amount of magnesium sulfate additive of 0.12 g(2.4% of the raw material),the final product′s yield,slenderness ratio,white content,and purity were 27.36%,65,65.3%,and 95.61%, respectively.

Key words: potassium feldspar, calcium sulfate whisker, atmospheric acidification method, slenderness ratio

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