Abstract：In order to determine the species and content of the minerals containing iron in Dataigou iron mine, twenty-nine iron ore samples were collected from Dataigou deep iron mine for determining mineral composition by X-ray powder diffraction method. The physical phase detection showed that minerals containing iron that can be used as iron-making raw materials are magnetite, hematite and siderite; while that cannot are talc, hornblende, chlorite and pyrite. In combination with full spectrum semi-quantitative mineral analysis technique, the semi-quantitative results of each mineral constituent was calculated, so that the species and content of the minerals containing iron in Dataigou mine were identified. In order to examine method precision, the same iron ore sample was determined by X-ray powder diffraction method in a semi-quantitative manner under the same conditions, obtaining the mass fraction of quartz in the sample at 59.0%-60.7% and the relative standard deviation (RSD, n=5) of 1.0%; the mass fraction of magnetite at 27.8%-29.5% and RSD of 2.1%; the mass fraction of talc at 9.6%-10.3% and RSD of 2.9%; the mass fraction of dolomite at 1.2%-1.6% and RSD of 11.3%. In order to examine method accuracy, four standard samples were prepared according to different ratios. Each sample was determined for five parallel times. The relative deviation of iron minerals with reference values of 10%, 30%, 50% and 70% were all not more than 12.8%, 4.7%, 2.8% and 2.5%. The accuracy and precision test indicated that the proposed method basically met the quality demand of semi-quantitative determination of minerals by X-ray powder diffraction method.
迟广成, 肖刚, 汪寅夫, 胡建飞, 王海娇, 马健生. 铁矿石矿物组分的X射线粉晶衍射半定量分析[J]. 冶金分析, 2015, 35(1): 38-44.
CHI Guang-cheng, XIAO Gang, WANG Yin-fu, HU Jian-fei, WANG Hai-jiao, MA Jian-sheng. Semi-quantitative analysis of the mineral components of iron ores by X-ray powder diffraction. , 2015, 35(1): 38-44.
