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过程工程学报 ›› 2017, Vol. 17 ›› Issue (2): 327-332.DOI: 10.12034/j.issn.1009-606X.216248CSTR: 32067.14.jproeng.216248

• 过程与工艺 • 上一篇    下一篇

响应曲面法优化煤矸石酸溶物制备氧化铁红研究

  郑 森， 杨 劲*， 夏举佩， 罗中秋， 耿锐仙   

  1. 昆明理工大学化学工程学院
  • 收稿日期:2016-07-19 修回日期:2016-09-12 出版日期:2017-04-20 发布日期:2017-04-19
  • 通讯作者: 杨劲 xjp6661@163.com

 
Preparation Iron Oxide Red Based on Acid Soluble Substances of  Coal Gangue Using Response Surface Methodology

ZHENG Sen,  YANG Jin*, XIA Ju-pei, LUO Zhong-qiu, GENG Rui-xian   

  1. Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, China
  • Received:2016-07-19 Revised:2016-09-12 Online:2017-04-20 Published:2017-04-19
  • Contact: YANG Jin xjp6661@163.com

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摘要： 以煤矸石高效利用为目的，采用响应曲面实验设计优化煤矸石铝铁分离液制备氧化铁红颜料工艺，研究了Na2CO3浓度、反应温度和Fe(II)浓度等因素对氧化铁红颜料纯度的影响；在单因素实验基础上，对实验设计进行优化，分析了产物的物相结构和微观形貌. 结果表明，在Na2CO3浓度107 g/L、反应温度43℃及Fe(II)浓度0.26 mol/L的条件下，所得氧化铁红产品纯度可达96.09%，纯度及其它指标均满足GB/T1863-2008中A级氧化铁红要求. 铁红中间产物为针状a-FeOOH和g-FeOOH，煅烧后针状消失，得到结晶较好的a-Fe2O3.

关键词:  

Abstract: Technology that prepared iron oxide red pigment from the separator liquid between iron and aluminum of coal gangue was optimized though response surface experiment design based on the purpose of coal gangue resource about efficient utilization. The effects of Na2CO3 concentration, reaction temperatures and Fe(II) concentration on the purity of the iron oxide red pigment were researched. The response surface experiment design was employed to optimize based on the single factors experiments, phase structure from products and microstructural aspects were analyzed. The results indicated that the purity of the iron oxide red pigment can be reach to 96.09% when Na2CO3 concentration was 107 g/L, reaction temperature was 43℃and Fe(II) concentration was 0.26 mol/L. The purity and other indicators could meet the requirement of a kind iron oxide red from standard specifies iron oxide red pigment GB/T1863-2008. The intermediate products was a-FeOOH and g-FeOOH with obvious needle aspects and that disappeared by calcination then a-Fe2O3 withbetter crystalline was obtained.

Key words: coal gangue, iron oxide red, response surface methodology

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