金刚石刀头磨削铁矿石电耗的影响因素  

Influencing factors of power consumption in grinding iron ore with diamond cutter head

作　　者：丁彩志 庄世勇 宋磊博 邓勇 王寰宇 顾路 DING Caizhi;ZHUANG Shiyong;SONG Leibo;DENG Yong;WANG Huanyu;GU Lu(School of Resources and Civil Engineering,Liaoning University of Science and Technology,Benxi 117004,Liaoning,China;School of Civil Engineering,Shaoxing University of Arts and Sciences,Shaoxing 312000,Zhejiang,China;Zhaojin Mining Industry Co.,Ltd.,Yantai 265400,Shandong,China)

机构地区：[1]辽宁科技学院资源与土木工程学院,辽宁本溪117004 [2]绍兴文理学院土木工程学院,浙江绍兴312000 [3]招金矿业股份有限公司,山东烟台265400

出　　处：《金刚石与磨料磨具工程》2025年第1期75-85,共11页Diamond & Abrasives Engineering

基　　金：辽宁省教育厅基本科研项目(LJKFZ20220281);本溪市科技创新课题研究项目(BKYH2304);辽宁科技学院大学生创新创业训练计划资助项目(202411430062)。

摘　　要：金刚石刀头磨削铁矿石的电耗是磨采机作业的核心指标,通过搭建实验台并采用2种金刚石圆锯片和2种磨轮对2种铁矿石样本进行磨削实验,得到不同刀头及磨削线速度、磨削厚度、磨削宽度、磨削移动速率等参数下的电耗实验数据,据此计算及分析磨削效率和电耗间的关系。结果表明:矿石1的磁性铁区、矿石2的石英区和磁性铁区额定电机电耗平均值分别为50.41、36.05和15.17(kW·h)/t,且添加铁片的锋利型刀头可有效降低铁矿石的磨削电耗;在一定范围内增加磨削宽度和金刚石磨轮直径,可提高磨削效率并降低电耗,且矿石的岩石特性对磨削电耗影响较大。此外,合适的金刚石刀头磨削方向有利于矿浆收集,并最大化地切向推压对切削力的增益效果。单次磨削移动距离Δs与磨削效率密切相关,且与金刚石切入深度Δh直接相关。在M1~M66个实验方案中Δs值范围分别为6.01~14.35、3.23~9.96、4.14~15.04、26.44~32.09、1.62~5.37和2.02~5.64μm时调整Δs值,能够有效降低磨削电耗;且当M1~M6的Δs值分别为14.35、6.65、15.04、32.09、5.37和3.22μm时,磨削电耗最低。但要确定最适用的Δs值,需综合考虑金刚石工具的尺寸结构、刀头性能、矿石的岩石特性、作业参数、刀头受力情况等因素,以找到其适应不同情况的合理取值范围。Objectives:The existing mining equipments,such as coal mining machines,excavators,tunneling machines,and diamond tools,are combined to form a new mining equipment called the“grinding mining machine”,which is used for grinding mining.The main advantage of grinding mining applied in metal mines is that it greatly simplifies the mining process.However,whether it can be popularized and applied depends on whether its operating cost is close to or lower than the mining cost of drilling and blasting methods.Among these,the energy consumption cost of grinding mining machine operation is one of the most critical control indicators.The existing cutter heads of diamond tools,such as diamond circular saw blades and diamond grinding wheels,are used to grind iron ore.The relationship between grinding power consumption and the type of diamond cutter heads,the rock characteristics of iron ore,and the grinding operation parameters are studied.The factors affecting the grinding efficiency and the cost of the grinding mining machine are explored to find a reasonable range of values that can adapt to different situations.Methods:An experimental platform was built,and two types of diamond circular saw blades and two types of diamond grinding wheels were used to conduct grinding experiments on two types of iron ore samples.There were a total of six experimental schemes,and power consumption experimental data were obtained for different blade heads and their grinding line speeds,grinding thicknesses,grinding widths,grinding movement rates,etc.Based on this,the rated grinding efficiency,the rated motor power consumption,and the rated grinding power consumption were calculated.The main influencing factors of power consumption in grinding iron ores with diamond cutter heads were analyzed by comparing the above data.Results:According to the experimental data and the calculation analysis of the six experimental schemes,the following results were obtained:(1)The average rated motor power consumption of the magnetic iron zone of ore 1,the

关 键 词：磨采机 金刚石锯片 金刚石磨轮 磨削效率 磨削电耗 

分 类 号：TD42[矿业工程—矿山机电] TG74[金属学及工艺—刀具与模具] TG58[化学工程—高温制品工业] TQ164