摘要
资源化利用工业固体废弃物金属镁还原渣,将其磁选除铁后,配合其他矿物助剂以满足硅灰石的成分要求,物料采用三相交流电熔法熔融,以熔融晶化工艺制备高长径比硅灰石。工艺余热进行回收,可用于矿物原料的烘干和预热。析晶后的硅灰石晶体采用圆盘式气流粉碎机加工,获得长径比20∶1,粒度1 250目的针状粉。
Reduced slag in the production of metallic magnesium was a sort of industrial waste which could be utilized as resources. After magnetic separation on iron removal, magnesium slag is mixed with other mineral additives to satisfy the requirement ofwollastonite component. Materials is melted by three-phase AC electrofusion to preparate wollastonitc by melting-crystallization method. Waste heat recovery can be applied to dry and preheat mineral materials. Wollastonite crystal is ground by disk air jet mill to get needle-shaped powder with higher aspect ratio at 20：1 and grain size 1 250 mesh.
出处
《中国非金属矿工业导刊》
2015年第6期20-22,共3页
China Non-Metallic Minerals industry
关键词
工业废渣
镁渣
熔融晶化
硅灰石
industrial waste
magnesium slag
melting-crystallization
wollastonite
