基于磁—重效应对矿物中w(Fe_3O_4)的快速测定

Rapid Determination of Mass Fraction of Fe_3O_4 in Minerals Using Magnetic-Gravity Effect

利用矿物在相同磁场、相同质量下因w(Fe3O4)不同会有不同称重读数,采取不同磁场类型和不同磁场强度对配料进行磁—重效应实验。结果表明,在一定磁场条件下,w(Fe2O3)对磁—重实验结果准确性的影响可以忽略,各实验条件下磁—重效应拟合直线方程决定系数均大于0.996,线性相关明显,磁—重效应可以准确便捷测定矿物中Fe3O4的质量分数。

Minerals with same total mass but different w（ Fe3O4 ）will show different weighting readings under the same magnetic field condition. Accordingly, experiments are carried out to test the magnetic-gravity effect in different types and intensities of magnetic fields using diverse testing samples. The results show that the influence of w （Fe3O4 ） on the accuracy of magnetic-gravity effect can be ignored under a certain magnetic field condition. The determinative coefficients in the magnetic-gravity effect fitting equations are higher than 0. 996 ,which shows excellent positive correlativity. The mass fraction of Fe3O4 in diverse minerals can be determined accurately and conveniently by using magnetic-gravity effect.