富铁膨润土的脱色性能研究

辽宁石油化工大学学报 ›› 2009, Vol. 29 ›› Issue (1): 42-44.

富铁膨润土的脱色性能研究

高文艺¹,郑振朝²,任立国¹,马丽丽¹

1.辽宁石油化工大学化学与材料科学学院,辽宁抚顺113001;2.辽宁石油化工大学信息与控制工程学院,辽宁抚顺113001

收稿日期:2008-10-02 出版日期:2009-03-25 发布日期:2017-07-05
作者简介:高文艺(1967- ),男,河南新郑市,高级实验师

Decoloring Capability of Iron-Rich Bentonites

GAO Wen-yi¹, ZHENG Zhen-chao², REN Li-guo¹, MA Li-li¹

1.School of Chemistry & Materials Science,Liaoning University of Petrochemical & Chemical Technology， Fushun Liaoning 113001,P.R.China; 2.School of Information and Control Engineering,Liaoning University of Petrochemical & Chemical Technology，Fushun Liaoning 113001,

Received:2008-10-02 Published:2009-03-25 Online:2017-07-05

摘要/Abstract

摘要： 对矿产粗制富铁膨润土进行了金属元素分析。通过对矿产粗制膨润土进行研磨、筛分取小于160目
的细微颗粒进行酸处理以脱除膨润土中的金属杂质(主要是铁)。经水洗、过滤并用硫氰化钾检验处理效果、干燥、
焙烧等步骤最终以焙烧产品的色泽确定对产品的脱色效率。考察了酸种类、浓度、处理温度和时间以及焙烧温度对
脱色效果的影响。结果表明,在膨润土脱色过程中,在室温下,8mol/L的浓硝酸,酸处理16h,焙烧温度为550 ℃,
焙烧时间为2h,在该条件下制备的产品颜色由原始的棕红色脱变为乳白色,白度值由43.0提高到81.6。

关键词: 膨润土 , 脱色 , 金属离子 , 白度

Abstract: Crude iron-rich bentonites were investigated by metallic element analysis. The bentonite samples were grinded and sieved to obtained micro-particles with the size lower than 160 Mesh, then acidification was carried out in order to remove metallic (mainly Fe) impurities. During treatment, the influences of the sort and concentration of acid, acidified time, calcination temperature on decoloring capability were discussed. By means of washing by water, filtering, drying and calcinating, acidified products were obtained, and then tested the whiteness of the product after calcination. In the decoloring experiments, the optimum conditions were obtain as follows: the concentration of nitric acid is 8 mol/L, acidified times 16 h, calcination temperature 550 ℃, calcination times 2 h.Under these conditions, the color of the samples is transformed from brown-red to milky white. The samples whiteness changes from 43.0 to 81.6.

Key words: Bentonite , Decolour , Metallic ion , Whiteness

高文艺,郑振朝,任立国,马丽丽. 富铁膨润土的脱色性能研究[J]. 辽宁石油化工大学学报, 2009, 29(1): 42-44.

GAO Wen-yi, ZHENG Zhen-chao, REN Li-guo, MA Li-li. Decoloring Capability of Iron-Rich Bentonites[J]. Journal of Liaoning Petrochemical University, 2009, 29(1): 42-44.

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