大型镁冶炼设备工艺介绍及主机设备选型  

Introduction to large magnesium smelting engineering process and selection of main equipment

作　　者：齐闯 乔斌 朱成章 代伟林 Qi Chuang;Qiao Bin;Zhu Chengzhang;Dai Weilin(CITIC HIC Engineering and Technology Co.,Ltd.,Luoyang 471039,China;Luoyang Mining Machinery Engineering Design Institute Co.,Ltd.,Luoyang 471039,China)

机构地区：[1]中信重工工程技术有限责任公司,洛阳471039 [2]洛阳矿山机械工程设计研究院有限责任公司,洛阳471039

出　　处：《耐火与石灰》2024年第5期36-39,共4页Refractories & Lime

摘　　要：介绍了国内大型镁冶炼设备的工艺流程及煅烧工段回转窑及还原工段冷渣处理设备的选型。采用皮江法炼镁,将煅白(重烧白云石)和硅铁、萤石粉按一定配比磨粉,压成团块,在高温和真空条件下,使煅烧白云石中的氧化镁还原为镁蒸气,然后冷凝结晶为粗镁,再经精炼制得镁锭。煅烧工段采用LK-k1500Φ5.8 m×80 m回转窑,煅白产量≥1 350 t/d,系统热耗低;还原工段镁渣系统采用滚筒冷渣机配套辊压机终粉磨系统,成品镁渣粉产量160 t/h,实现变废为宝,资源合理利用。The process flow of large Mg smelting projects in China and the selection of rotary kiln for calcination and of cold slag treatment equipment for the reduction are introduced.With the Pidgeon process adopted for Mg production,calcined dolomite and Si-Fe,fluorite powder are ground in a certain ratio,and pressed into briquettes.Under high temperature and vacuum conditions,the MgO in calcined dolomite is reduced to Mg vapor,then condensed and crystallized into rough Mg,which is then refined to Mg ingots.The LK-k1500 rotary kiln ofΦ5.8 m×80 m is used for calcination to achieve a calcined dolomite output of 1350 t/d or more,and a low system heat consumption.Besides,a roller press finish grinding system equipped with a drum slag cooler is provided for the Mg slag system in the reduction section,with an output of finished Mg slag powder of 160 t/h,hence realizing wasteto-treasure and the rational utilization of resources.

关 键 词：镁冶炼设备 工艺流程介绍 回转窑选型 变废为宝 

分 类 号：TQ175.6[化学工程—硅酸盐工业]