制备条件对硅藻土助滤剂中可溶性铁离子的影响规律  

Effects of preparation conditions on soluble iron ion in diatomite filter aids

作　　者：贺壹城 钱玉鹏[1,2] 高惠民[1,2] 任子杰[1,2] 

机构地区：[1]武汉理工大学资源与环境工程学院,湖北武汉430070 [2]武汉理工大学矿物资源加工与环境湖北省重点实验室,湖北武汉430070

出　　处：《化工矿物与加工》2016年第9期30-33,共4页Industrial Minerals & Processing

基　　金："十二五"国家科技支撑计划课题(2011BAB03B07)

摘　　要：可溶性铁离子质量分数是衡量啤酒用硅藻土助滤剂质量的重要指标。文章考察了助熔剂细度、助熔剂添加量、焙烧温度、焙烧时间、入料细度及冷却方式对硅藻土助滤剂中可溶性铁离子质量分数的影响规律。试验结果表明,对于临江硅藻土,合适的入料粒度、选用颗粒状Na_2CO_3、增加助溶剂添加量、升高焙烧温度及延长焙烧时间,有利于降低可溶性铁离子的质量分数;喷水冷却是一种降低可溶性铁离子质量分数的有效方法,试验发现喷水后密封冷却降低铁离子质量分数的效果更佳。The soluble iron ion content is an important index to evaluate the quality of diatomite filter aids. The effects of flux granularity, flux dosage, calcination temperature and time, feed fineness and cooling mode on the soluble iron ion in diatomite fil- ter aids were investigated. The results showed that appropriate feed particle size of diatomite, grainy sodium carbonate, increase of flux addition volume, higher calcination temperature and lon- ger calcination time would be conducive to reducing the soluble i- ron ion content. Spray cooling is an effective way to reduce the soluble iron ion content and tests revealed that seal cooling after water spraying could have a better effect.

关 键 词：硅藻土 助滤剂 焙烧 可溶性铁离子 

分 类 号：TD976[矿业工程—选矿]