摘要
以0.83～2mm、0.35～0.83mm两种单一粒径的攀西钒钛磁铁矿为原料,钢球和短圆柱形钢锻为介质,设定磨矿浓度80%、磨矿时间0.5、1、2、4、6、8、10min、磨机转速96r/min,钢球的配比为D30∶D25∶D20=42∶60∶93,短圆柱钢锻配比为D30×30∶D25×25∶D20×20=28∶40∶62,介质充填率为40%。研究结果表明:不同形状的磨矿介质对钒钛磁铁矿的破碎遵循一阶动力学模型,且在短时间内短圆柱钢锻的破碎速率Si明显高于钢球的破碎速率,在短时间内介质形状对初始破碎分布参数的影响较大。
Using two Panzhihua Vanadium-titanium magnetite ores with different mono-size partides such as 0.83 mm^2 mm 、0.35 mm^0.83 mm,influence of medium shape on breaking parameters of vanadium-titanium magnetite was investigated under titanium magnetite were used,steel balls and short cylindrical steel forgings as grinding mediums,the grinding conditions as follows:pulp concentration of80%,grinding time of 0.5、1、2、4、6、8、10 min,mill speed of 96 r/min,steel ball proportion with D30∶D25∶D20=42∶60∶93,short cylindrical steel forgings proportion with D30×30∶D25×25∶D20×20=28∶40∶62,ball charge of 40%.The results show that the comminution of vanadium-titanium magnetite with different medium shapes obeys first-order-breakage kinetics,and the specific rates of breakage of the short-cylinder steel forging were obviously higher than the steel ball under short time,also there has significant effect on primary breakage distribution parameters with the shape of the medium.
作者
何逵
HE Kui(Institute of Vanadium Titanium,Panzhihua University,Panzhihua Sichuan 617000,China;Metallurgy and Minerals Secondary Resources Efficient R&D Center,Panzhihua Sichuan 617000,China)
出处
《有色金属（选矿部分）》
CAS
北大核心
2019年第2期67-70,共4页
Nonferrous Metals（Mineral Processing Section）
基金
四川省发改委项目(川发改投资[2013]991号)
关键词
钒钛磁铁矿
破碎速率
初始破碎分布函数
vanadium-titanium magnetite
specific rates of breakage
primary breakage distribution function
