Microwave assisted grinding of ilmenite ore  

微波辅助磨碎钛铁矿(英文)

作　　者：郭胜惠[1] 陈菓[1] 彭金辉[1] 陈晋[1] 李东波[1] 刘利军[1] 

机构地区：[1]昆明理工大学冶金与能源工程学院非常规冶金省部共建教育部重点实验室,昆明650093

出　　处：《Transactions of Nonferrous Metals Society of China》2011年第9期2122-2126,共5页中国有色金属学报（英文版）

基　　金：Project(51090385)supported by the National Natural Science Foundation of China;Project(2007CB613606)supported by the National Basic Research Program of China

摘　　要：The influence of microwave heating on the grinding of Panzhihua ilmenite ore was investigated. Factors that influence the processing are： the microwave exposure time, power density and sample mass. 40 g sample was microwave heated for 30 s with 1 kW of microwave power and followed by water quenching. SEM analysis indicated that intergranular fractures occurred between ores and gangues other than transgranular fractures after microwave treatment, which would liberate minerals from each other effectively. The subsequently magnetic separation trials provided evidence that the recovery rate increased from 44% for raw ore to 72% by microwave treatment.研究微波加热对攀枝花钛铁矿磨矿性能的影响。微波辐射时间、微波功率密度和样品质量是磨矿过程的重要参数。将40g样品在微波功率1kW下辐射30s,然后进行水淬处理。SEM分析结果表明:经过微波辐射处理的钛铁矿在有用矿物和脉石间产生了裂纹,能够有效地促进矿物与脉石的解离。在随后的磁选实验中,经过微波辐射处理的钛铁矿的回收率从44%提高到72%。

关 键 词：MICROWAVE ilmenite ore MAGNETITE GRINDING magnetic separation 

分 类 号：TD921.4[矿业工程—选矿]