摘要
以广西某选矿厂锡石多金属硫化矿矿石为原料,研究了微波预处理对矿石磨矿产物粒度组成、磨矿动力学、破碎速率及磨机生产能力的影响。结果表明,微波预处理后,矿石在不同磨矿时间下的磨矿产物粒度均变细,-0.074mm粒级含量提高了4.41~12.90个百分点;微波预处理前后该矿石磨矿均符合一级磨矿动力学模型;微波预处理使矿石的破碎速率(S1)值提高近57%,且磨机的生产能力得到了明显提升。因此,微波预处理可以降低矿石的强度,强化矿石的磨矿过程,是一种有效的降低磨矿能耗、提高磨矿效率的方法。
The cassiterite polymetallic sulfide ore from a concentrator in Guangxi was used as raw material to study the effects of microwave pretreatment on particle size composition,grinding kinetics,specific rate of breakage and grinding machine capacity of ore grinding.It was shown that after microwave pretreatment,the particle size of the grinding products of the ore under different grinding time becomes finer,and the particle content of-0.074 mm increases by 4.41-12.90 percentage points.The breakages of both untreated and microwave pretreatment cassiterite polymetallic sulfide ore obey the first-order grinding kinetics.The specific rate of breakage(S1)of microwave pretreatment ore is higher than that of untreated ore,and the S1 increased by nearly 57%.Meanwhile,the production capacity of the mill is also obviously improved.Therefore,microwave pretreatment can reduce the strength of ore and strengthen the grinding process of ore,which is an effective method to reduce the grinding energy consumption and improve the grinding efficiency.
作者
郭润楠
杨金林
马少健
帅智超
GUO Runnan;YANG Jinlin;MA Shaojian;SHUAI Zhichao(College of Resources,Environment and Materials,Guangxi University,Nanning 530004,China;Guangxi Key Laboratory of Processing for Nonferrous Metallic and Featured Materials,Guangxi University,Nanning 530004,China)
出处
《有色金属（选矿部分）》
CAS
北大核心
2020年第6期108-111,126,共5页
Nonferrous Metals（Mineral Processing Section）
基金
国家自然科学基金资助项目(51874105)
广西自然科学基金资助项目(2018GXNSFAA281204)。
关键词
微波预处理
锡石多金属硫化矿
破碎速率
磨矿效率
microwave pretreatment
cassiterite polymetallic sulfide ore
specific rate of breakage
grinding efficiency
