| 密度组成及磁场强度对煤比磁化率影响的研究 |
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| 引用本文： | 崔敬媛,焦红光,张慧,陈清如,铁占续.密度组成及磁场强度对煤比磁化率影响的研究[J].煤炭转化,2008,31(1):6-9. |
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| 作者姓名： | 崔敬媛 焦红光 张慧 陈清如 铁占续 |
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| 作者单位： | 1. 河南理工大学材料科学与工程学院,454000,河南焦作
2. 河南理工大学机械与动力工程学院,454000,河南焦作 |
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| 摘 要： | 不同密度级煤比磁化率的差异是煤磁选的依据,用Gouy磁天平对不同密度级煤比磁化率进行测定,煤比磁化率随着密度的减小而减小,小于1.5 g/cm3密度级的煤显逆磁性;低密度级煤比磁化率随着磁场强度的增加而减小,逆磁性增加,而高密度级煤比磁化率随着磁场强度增加顺磁性减弱.根据所得函数式,表明存在一最佳磁场强度使低、高密度级煤的磁性差异最大.相比较而言,密度对煤磁化率的影响更大.
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| 关 键 词： | 煤 磁选 比磁化率 密度 磁场强度 |
| 收稿时间： | 2007-10-29 |
| 修稿时间： | 2007-11-23 |
STUDY ON THE MAGNETIC INTENSITY AND DENSITY INFLUENCE TO THE MAGNETIC SUSCEPTIBILITY OF COAL |
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| Cui Jingyuan,Jiao Hongguang,Zhang Hui,Chen Qingru,Tie Zhanxu.STUDY ON THE MAGNETIC INTENSITY AND DENSITY INFLUENCE TO THE MAGNETIC SUSCEPTIBILITY OF COAL[J].Coal Conversion,2008,31(1):6-9. |
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| Authors: | Cui Jingyuan Jiao Hongguang Zhang Hui Chen Qingru Tie Zhanxu |
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| Abstract: | The difference of magnetic susceptibility of different density level coal is the basis of coal magnetic separation. Use Gouy magnetic scale to determine the magnetic susceptibility of different density coal. The magnetic susceptibility of coal reduce along with the density reduce, the coal of density less than 1. 5 g/cm3 display diamagnetism~ the magnetic susceptibility of low density coal reduce along with the magnetic intensity increase, but the diamagnetism increase; the paramagnetic of high density coal decrease, this indicated that there been has a best magnetic intensity to make the magnetic difference between low and high density level coal to be biggest. Comparatively speaking,the influence of density is bigger to the coal magnetic susceptibility. |
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| Keywords: | coal magnetic separation magnetic susceptibility density magnetic intensity |
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