微粉煤磁性及其对干法高梯度磁选影响的试验研究  

Study on experimantal effect of magnetic property and dry permanent high gradient magnetic separation in fine coal

作　　者：铁占续[1,2] 焦红光[3] 崔敬媛[3] 陈清如[3] 

机构地区：[1]中国矿业大学化工学院,江苏徐州221000 [2]河南理工大学机械与动力工程学院,河南焦作454003 [3]河南理工大学材料科学与工程学院,河南焦作454003

出　　处：《河南理工大学学报（自然科学版）》2009年第2期230-233,共4页Journal of Henan Polytechnic University（Natural Science）

基　　金：河南省重点科技攻关项目(117309)

摘　　要：为了提高煤粉磁选脱硫降灰效率,应用振动样品磁强计对北宿煤的磁性进行了研究,考察了密度组成、粒度组成对其比磁化率的影响,研究表明:小于1.6 g/cm3各密度级和大于1.6 g/cm3各密度级煤比磁化率符号相反;粒度越小,煤的逆磁性越弱;采用X100-10型永磁振动高梯度磁选机进行了煤粉的磁选试验,脱硫率和脱灰率最高分别达到了55.52%和64.41%,磁选试验脱灰效果明显.In order to enhance the desulphurization and de - asbing efficiency of magnetic separation in fine coal, by using vibration sample magnetometer, the magnetism of Beisu coal is studied. The influence of density composition, the size composition and the magnetic field strength to its magnetic susceptibility, is invertigted. The results indicated： the magnetic susceptibility of smaller than the 1.6 g/cm^3various densities level and bigger than 1.6 g/cm^3 various densities level coal to be opposite. The granularity is smaller, the coal diamagnetism is worse, and the influence of magnetic intensity is not big to the coal. By using the X100 - 10 permanent magnetism to vibrate the high gradient magnetic ore separator to carry on the magnetic separation experiment, the percentage of desulphurization and the de - ashing rate achieves 55. 52% and 64.41% , which the effect of de - ashing was obvious.

关 键 词：微粉煤 高梯度 磁选 

分 类 号：TD94[矿业工程—选矿]