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过程工程学报 ›› 2017, Vol. 17 ›› Issue (2): 382-388.DOI: 10.12034/j.issn.1009-606X.216326

• 材料工程 • 上一篇    下一篇

响应面法优化凹凸棒石尾矿中蛋白石制备水玻璃工艺

王 灿1, 刘海波1, 谢晶晶1, 鲁光辉2, 于龙庆2, 陈天虎1*   

  1. 1. 合肥工业大学资源与环境工程学院纳米矿物与环境材料实验室,安徽 合肥 230009;
    2. 盱眙县中材凹凸棒石粘土有限公司,中国科学院盱眙凹土工程中心,江苏 盱眙 211700
  • 收稿日期:2016-10-19 修回日期:2016-11-01 出版日期:2017-04-20 发布日期:2017-04-19
  • 通讯作者: 陈天虎
  • 基金资助:
    中国科学院盱眙凹土应用技术研发与产业化中心开放课题

Optimizing for Preparing Sodium Silicate from Opal of Palygorskite Using Response Surface Method

WANG Can1,  LIU Hai-bo1,  XIE Jing-jing1,  LU Guang-hui2,  YU Long-qing2,  CHEN Tian-hu1*   

  1. 1. Lab. Nanomineralogy Environ. Mater., Sch. Resour. Environ. Eng., Hefei University of Technology, Hefei, Anhui 230009, China;
    2. Xuyi Sinoma Attapulgite Corporation, Xuyi Center of Attapulgite Applied Technology and Engineering, Xuyi, Jiangsu 211700, China
  • Received:2016-10-19 Revised:2016-11-01 Online:2017-04-20 Published:2017-04-19
  • Contact: CHEN Tian-hu

摘要: 以凹凸棒石尾矿中蛋白石为原料,通过响应面法优化水热碱溶制备水玻璃的工艺条件。在单因素实验的基础上,以水玻璃模数和SiO2浸出率的加权平均值为响应值,根据Box-Behnken的中心组合实验设计原理对反应温度、液固比、碱硅比关键因素进行优化,对实验结果进行方差分析和验证。在分析各个因素的显著性和交互作用后,得出最佳工艺条件为:反应温度110℃,液固比6:1,碱硅比为4.05:10。此时,水玻璃模数和SiO2浸出率分别为2.85,81.4%,加权平均值达到最大值为76.1。加权平均值的相关系数R2为0.9921,响应曲面法模型与实验数据具有很好一致性。

关键词: 蛋白石, 水玻璃, 响应面法, 优化, Box-behnken设计

Abstract: The preparation of sodium silicate based on opal rich palygorskite by using response surface method was studied. The weighted mean of both sodium silicate modulus and leaching rate of SiO2 was chosen as the response variables based on the single factor experiment. According to the Box-behnken center combination experiment, the reaction temperature, liquid-solid ratio and mass of NaOH to SiO2 were optimized. In addition, the statistical ANOVA analysis and confirmation tests were studied. The sodium silicate modulus of 2.85 and leaching rate of 81.4% can be obtained at an optimal parameters (reaction temperature 110 ℃, mass of NaOH to SiO2 6:1 and liquid-solid ratio 4.05:10), meanwhile, the weighted mean reached a maximum value of 76.1. The correlation coefficient (R2) of the weighted mean was 0.9921, indicating that the model of response surface method showed a good agreement with the experimental data.temperature, liquid-solid ratio and mass of NaOH to SiO2 were optimized. In addition, the statistical ANOVA analysis and confirmation tests were studied. The sodium silicate modulus of 2.85 and leaching rate of 81.4% can be obtained at an optimal parameters (reaction temperature 110 ℃, mass of NaOH to SiO2 6:1 and liquid-solid ratio 4.05:10), meanwhile, the weighted mean reached a maximum value of 76.1. The correlation coefficient (R2) of the weighted mean was 0.9921, indicating that the model of response surface method showed a good agreement with the experimental data.

Key words: opal, sodium silicate, response surface method, optimization, Box–Behnken design