某铅锌矿年处理35万吨矿石选矿厂设计.doc
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1、某铅锌矿年处理35万吨矿石选矿厂设计摘要:按照毕业设计任务书的要求,进行了铅锌矿年处理35万吨矿石选矿厂设计,产品为铅精矿和锌精矿。在收集类似铅锌矿选矿厂相关设计资料的基础上,确定了各车间的工作制度,对设计工艺流程进行了选择和论证,确定了设计的工艺流程,即:破碎采用三段一闭路流程;磨矿采用二段一闭路流程;浮选中铅循环采用二次粗选,四次精选,一次扫选的流程作业,锌循环采用一次粗选,三次精选,一次扫选的流程作业;精矿采用先浓缩后过滤的两段脱水工艺流程。对设计工艺流程进行了工艺指标计算,包括破碎、筛分、磨矿、浮选和矿浆流程。对破碎、筛分、磨矿、分级、浮选及脱水设备进行了选择和计算,确定了工艺所需的工
2、艺设备。设计还进行了厂房的总体布置,并进行了厂房内的设备配置。根据选厂的地形条件,沿山坡地布置,其中,粗碎、中细碎、筛分厂房分开布置。磨矿浮选共厂房配置,其中磨矿采用纵向配置,浮选机采用横向配置。浓缩机配置在露天,过滤机与精矿仓配置在厂房内。完成了原则流程图、数质量及矿浆流程图、设备形象联系图、破碎筛分、磨浮、脱水车间平断面图共5张图纸。关键词:铅锌矿 选矿厂设计 浮选The Design of One Lead-zinc Mine Concentrating Mill With the Capacity of 35,000 t/aAbstract: In accordance with th
3、e requirements of the the graduate design task book, the lead-zinc-year mine concentrating mill With the Capacity of 35,000 t/a processing plant design, product lead concentrate and zinc concentrate.On the basis of collecting data from in the lead-zinc concentrator , The work institutions of each wo
4、rk were determined, and the technological process was also chosen and reasoned. The process of crushing is three sections with one closed circuit, the grinding process is one sections with one closed circuit, flotation of lead circulating using two state rougher,four states cleaner ,one states scave
5、nger, flotation of zinc circulating one state rougher,three states cleaner ,one states scavenger; a process with two sections dewatering circuit which includes concentration and filtration were adoptedParameters of crushing, screening, grinding, flotation (including the circuit of pulp) and dewateri
6、ng were computed respectively. Then the technological parameters of equipments were calculated,the schemes of equipments were compared and the optimal equipments were determined.The general arrangement of concentrating mill and the allocation of equipments in diferent workshops were presented. Accor
7、ding to the topography of the plant site, the plant was set along the slope of mountain. The workshops of coarse crushing、middle crushing and fine crushing and screening were set independently. The workshops of coarse crushing、middle crushing、fine crushing and screening workshops are parallel to con
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