脲插层技术对茂名高岭土粘浓度的影响  

Effect of Urea-intercalation Techniques on Viscosity Concentration of Kaolin from Maoming District

作　　者：朱小燕[1] 严春杰[1] 陈洁渝[1] 

机构地区：[1]中国地质大学教育部纳米矿物材料及应用工程研究中心,中国地质大学(武汉)材料科学与化学工程学院,武汉430074

出　　处：《非金属矿》2010年第4期50-53,共4页Non-Metallic Mines

基　　金：广东省教育部产学研项目(2009045018)

摘　　要：对比美国、英国、巴西等国家高岭土近74%的高粘浓度,中国高岭土粘浓度不高,大多数在66%~70%之间。因而为满足造纸涂布工艺中,越来越高的刮刀速度的发展,各大造纸企业的优质高岭土都依赖于国外进口。为增强本国的造纸高岭土产品的竞争力,必须研究出高粘浓度的造纸涂布用高岭土。以脲插层技术提高茂名高岭土的粘浓度,使粘浓度自原来的68%提高至最大值74.05%。综合考察了反应时间、温度、水分及插层剂量的因素对高岭土粘浓度的影响。并通过粘浓度与插层率之间的对比,发现两者存在着相关关系。Compared to the viscosity concentration about 74 % of kaolin clay from the United Stated,the United Kingdom and Brazil,the viscosity concentration of kaolin about 66 % 70 % in China is lower.In order to fit for the development of high speed of the scraper in the technique of paper coating,most of enterprises depended on the imported kaolin products.For the improvement of the competition of kaolin products of our country,it is necessary to explore kaolin products with high viscosity concentration for paper coating.In this article the urea-intercalation is applied to improve the viscosity concentration of kaolin from Maoming district from 68 % to 74.05 %,and the affect of reaction time,temperature,moisture and content of urea on the viscosity concentration of kaolin products are researched.There is correlativity between the intercalation ratio and the viscosity concentration.

关 键 词：高岭土 粘浓度 插层技术 

分 类 号：P619.23[天文地球—矿床学] TD97[天文地球—地质学]