精制漂白高岭土及合成A型沸石的影响因素  

FACTORS AFFECTING CHEMICAL BLEACHING OF KAOLIN AND PREPARATION OF AZEOLITE FROM KAOLIN

作　　者：陈建人 刘素琴[1,2] 黄可龙[1,2] 

机构地区：[1]邵阳高等工业专科学校 [2]中南工业大学化学系

出　　处：《矿冶工程》1999年第2期40-43,共4页Mining and Metallurgical Engineering

摘　　要：采用浮选和化学漂白方法对脱铁后的高岭土进行了脱钛和增白，考查了煅烧温度和煅烧时间对精制高岭土制备Ａ型沸石质量的影响。研究结果表明，采用异羟肟酸作捕收剂，可有效脱除高岭土中的含钛杂质，在常温下，控制固体浓度为３３％，ｐＨ值为２～３，保险粉用量为矿样重的２％，反应４０ｍｉｎ，高岭土的白度达到８６２。在煅烧温度为７００℃、煅烧时间为２ｈ的条件下，所得Ａ型沸石的质量较好，Ｘ射线衍射和红外光谱分析证明了这一点。Titainumremoral and brightening of kaolin, which is obtained after ironremoval, were achieved by using flotation and chemical bleaching methods. The authors investigated the influences of calcining temperature and time on the quality of prepared Azeolite. The results show that titanium can be removed effectively from kaolin using hydroximic acid as collector. At normal temperature, pH=23, solid concentration of 33% and vat powder dosage as much as 2.0% that of ore sample, the whiteness of kaolin can reach 862 by reacting for 40 min. However, at calcining temperature of 700 and calcining time of 2 h, Azeolite obtained has highest quality, which has been proved by IR and XRD.

关 键 词：高岭土 A型沸石 脱钛 增白 煅烧条件 浮选 

分 类 号：TD973.2[矿业工程—选矿]