拜耳法赤泥还原制取抗磨白口铸铁的试验研究  

Experimental Study on Preparation of Abrasion Resistant White Cast Iron by Red Mud Reduction with Bayer Process

作　　者：刘世鸿 赵小莲[1] 何奥平[1] 曾建民[1] 吴妮 蒙卓玮 黄寿标 关瑜婷 LIU Shi-hong;ZHAO Xiao-lian;HE Ao-ping;ZENG Jian—min;WU Ni;MENG Zhuo-wei;HUANG Shou-biao;GUAN Yu-ting(Key Laboratory of Nonferrous Materials and New Processing Technology,Guangxi University,Nanning 530004,Guangxi,China;National Quality Supervision and Inspection Center of Aluminum Metal Product,Baise 533000,Guangxi,China)

机构地区：[1]广西大学有色金属及新加工技术重点实验室,广西南宁530004 [2]百色国家铝金属产品质量监督检验中心,广西百色533000

出　　处：《铸造》2020年第1期29-34,共6页Foundry

基　　金：广西科技重大专项(桂科AA17202001)。

摘　　要：通过圆盘造球的方式对赤泥进行冶炼前处理,使用感应炉对球团进行熔融碳热还原,得到抗磨低合金白口铸铁;对获得的铸铁进行组织、硬度、冲击韧性和磨损性能分析。结果表明:赤泥颗粒细小,冶炼前需对赤泥造块;赤泥经圆盘造球,还原熔炼,可获得高硬度亚共晶白口铸铁,硬度达到HRC 57.58,冲击韧度为5.239 J/cm^2,磨损性能优良。In the investigation, red mud pellets were prepared firstly by rotating disc using fine red mud particles and then smelted in an induction furnace using carbothermic reduction process to obtain abrasion-resistant white cast iron. The microstructure of the white cast iron obtained by the smelting reduction method was observed, and its hardness, impact toughness and wear resistance were tested. The results show that the red mud particles are small and are required to be pelleted before smelting reduction;smelting reduction can be carried out smoothly through pelleting. The high hardness hypoeutectic white cast iron has been obtained by smelting reduction, its hardness reaches HRC 57.58, impact toughness 5.239 J/cm^2, the cast iron has excellent wear resistance.

关 键 词：赤泥 圆盘造球 冷固球团 熔融还原 抗磨铸铁 

分 类 号：TG252[金属学及工艺—铸造]