河北某铁矿碎选生产工艺结构优化改造研究

近些年,国内铁矿资源品位呈下降趋势,选矿难度也不断加大,为解决柏泉铁矿采场进入末期开采阶段后产品质量下降、生产成本上升等问题,本文以柏泉铁矿碎选生产工艺结构优化改造项目为例进行研究。通过提高干选甩废率、增加三段闭路磨矿、优化为五段磁选等工艺创新措施,在保证铁精粉品位稳定在63%以上的同时,实现了回采期延长、减员增效、降本增利的多重目标。

+25 mm 碎选及 6 mm 筛分技术的探索与应用

＋２５ｍｍ碎选及６ｍｍ筛分技术的探索与应用郑州煤炭工业（集团）公司王金才齐振华１项目的提出郑州矿区煤炭有三大特点：（１）粒度组成以粉煤为主，－６ｍｍ约占总量的７０％，粉煤灰分在１６％以下，但粘附性大，筛分堵网严重；（２）＋２５ｍｍ级含矸高（约６％～１...

碎选系统机械设备存在问题及改造措施探讨

深入分析磨选系统磨选车间渣浆泵碎矿系统、PEF750×1060鄂破动鄂齿板、破碎机动颚、GBZ1800×10000重型板式给矿机尾部及中碎物料预前筛分系统存在问题,同时针对碎选系统机械设备存在问题提出技术改造措施,并分析碎选系统机械设备技术改造取得的效果。

尖山铁矿中碎干选工艺技术改造实践

尖山铁矿对中碎干选工艺运行情况进行调查与研究,通过干选机磁系偏角调整、分矿板最佳距离及角度改造,实现了矿石“该选则选”、废石“能抛则抛”的目的,降低了系统选比,节约成本,取得了显著效益。

刨花板生产中几种刨花分选再碎工艺流程的分析

本文对国内常见的几种干刨花分选再碎工艺进行了比较 ,实测了干燥机出料口刨花的筛分值 ,对其进行了简单分析、比较。从而确定出一条较合理的工艺流程 ,并对已有的流水线提出建设性改进建议。

Fuzzy TOPSIS method to primary crusher selection for Golegohar Iron Mine(Iran)

Selection of the crusher required a great deal of design regarding to the mine planning. Selection of suitable primary crusher from all of available primary crushers is a multi-criterion decision making(MCDM) problem. The present work explores the use of technique for order performance by similarity to ideal solution(TOPSIS) with fuzzy set theory to select best primary crusher for Golegohar Iron Mine in Iran. Gyratory, double toggle jaw, single toggle jaw, high speed roll crusher, low speed sizer, impact crusher, hammer mill and feeder breaker crushers have been considered as alternatives. Also, the capacity, feed size, product size, rock compressive strength, abrasion index and application of primary crusher for mobile plants were considered as criteria for solution of this MCDM problem. To determine the order of the alternatives, closeness coefficient is defined by calculating the distances to the fuzzy positive ideal solution(FPIS) and fuzzy negative ideal solution(FNIS). Results of our work based on fuzzy TOPSIS method show that the gyratory is the best primary crusher for the studied mine.