针对比磁化系数对矿物磁性研究的重要意义和现有比磁化系数测量装置的不足,根据古依法原理研制一种新型比磁化系数测定仪.基于ANSYS Maxwell对其磁系磁场特性数值模拟研究表明:其磁场特性沿磁系中截面呈对称式分布,磁气隙磁力线呈水平方向分布;磁场强度最高值为1.40 T,与试验测定值的相对误差仅为0.7%,数值模拟具有较高可靠性.应用该新型比磁化系数测定仪对五水硫酸铜和钒钛磁铁矿原矿比磁化系数进行系统测定,其试验结果表明:测定值可精确到1.0×10-9 m3/kg,满足物质比磁化系数测定需求.%In light of the significance of specific susceptibility measurement on mineral magnetic study and the weakness of existing specific susceptibility measuring device, a new specific susceptibility tester is developed according to the Gouy theory. The results of the numerical simulation on the magnetic field characteristics of magnetic system with ANSYS Maxwell software show that the magnetic characteristics are symmetrically distributed on the middle section of the magnetic system, and the magnetic lines of force of the magnetic air gap are distributed horizontally; the maximum value of magnetic field intensity is 1.40 T, with the simulation error of 0.7% compared with the experiment measurement, which proves the high reliability of the numerical simulation. The specific susceptibility of copper sulfate pentahydrate and raw vanadium titano-magnetite ore is systemically measured with the new specific susceptibility tester. The results indicate that the measurement accuracy is as high as 1.0×10-9 m3/kg, which meets the requirements of material specific susceptibility measurement.
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