文档介绍：白云鄂博西矿极贫磁铁矿综合利用试验研究
摘要
随着钢铁行业规模的不断扩大,铁矿石的总需求逐渐增加。以及当前进口铁矿石价格迅猛上涨,矿山规模的进一步扩大和矿山逐渐进入深部开采,矿石的原矿品位和相对可磨度进一步降低,磨矿成本也随着升高。进一步降低入磨粒度将是下一步选矿厂技术改造的努力方向,实现这一目标的前提之一是如何实现预选抛尾,使得在降低采出矿石品位,扩大资源储量的同时,不降低选矿的入选品位,不提高选矿的生产成本。因此无论是极贫磁铁矿石还是极贫氧化铁矿石,必须在入磨前采用高效的破碎、选别设备,寻求更好的抛尾效果,大幅度提高入磨原矿品位,采用更彻底的“多碎少磨”方法提升超贫铁矿石的选矿经济效益。
本课题是对白云鄂博西矿极贫磁铁矿的选矿试验,利用“原矿细破碎BX永磁筒式磁滑轮预选抛尾-精矿超细破碎BX永磁筒式磁滑轮再选抛尾-二磁精矿球磨湿选工艺”,%,与正常矿石一起入磨机分选,从而对白云鄂博西矿极贫磁铁矿实现了综合利用,同时设计了3种试验方案,并进行了试验,为该矿的开发提供了技术上可行、经济上合理的工艺流程和工艺条件。同时,该专用设备也为此类型低品位贫磁铁矿开发利用提供了有效途径。本课题还对该类型矿石的开发利用具有一定的指导意义。
关键词:白云鄂博;极贫磁铁矿;超细破碎;BX永磁筒式磁滑轮;综合利用
Baiyun obo ore extremely poor ite west prehensive utilization of experimental studies。
Abstract
With the constant expansion of the steel industry, increasing the total demand of iron ore. And the current soaring prices of imported iron ore, mining and mine-scale gradually expand into the mining, ore mill ore grade and the relative degree of the reduction in the cost with the increased grinding. Into the mill to further reduce the particle size will be the next technological transformation efforts Concentrator direction of one of the prerequisites to achieve this goal is how to achieve the end of pre-cast, making recovery in the lower grade ore, to expand resources and reserves at the same time, without reducing dressing The selected grade, do not increase the production costs of beneficiation. So whether it is a very poor or very poor oxidation ite iron ore, into the mill to be broken before the use of highly efficient, sorting equipment, for a better cast the end result, a substantial increase to the mill ore grade, with a more thorough " little more than broken ground "approach to enhance economic efficiency ultra-poor iron ore beneficiation.
This subject is very poor ite Bayan Obo West Ore Beneficiation test, using "fine ore crushing BX permanent ic pulley drum end of pre-cast - ore fine crushing BX Drum ic end pulley and then throw the election - Second, permanent ic drum ic or