In this research, carbothermic reduction of molybdenite in the presence of sodium carbonate as sulfur scavenger by mechanical activation and heat treatment was studied. Mechanical activation of the mixed powders of molybdenite, graphite and sodium carbonate with 1:4:2 mol ratios were carried out by ball milling process under argon atmosphere for 10,20,40,50 and 70 h. The X-ray diffraction (XRD) patterns of samples revealed that no reaction occurred in the mill even after 70 h of milling. In order to study the mechanism of carbothermic reduction of molybdenite in the presence of sodium carbonate, simultaneous thermal analysis (STA) under heating rate of 10, 15 and 20 °C/min was carried out on the activated samples. XRD patterns and thermodynamic analysis of reaction products indicated that carbothermic reduction of molybdenite in the presence of sodium carbonate was advanced through the formation of intermediate phases Na₂MoO₄, MoO₂ in which the final products were Mo₂C, Na₂S. For separation of these two products, leaching by HCl and hot water was used. The XRD patterns of leached products were shown that molybdenum carbide with high purity was produced. The kinetics of reduction reaction was investigated and it was found that mechanical activation lowered the reaction temperature and activation energy.

在这项研究中，研究了通过机械活化和热处理在碳酸钠作为硫清除剂的条件下对辉钼矿的碳热还原。在氩气气氛下，通过球磨工艺对摩尔比为1：4：2的辉钼矿，石墨和碳酸钠的混合粉末进行机械活化10、20、40、50和70 h。样品的X射线衍射（XRD）图谱显示，即使研磨70小时后，研磨机中也没有反应发生。为了研究碳酸钠存在下辉钼矿的碳热还原机理，对活化的样品在10、15和20°C / min的加热速率下进行了同时热分析（STA）。₂的MoO ₄，的MoO ₂其中最终产物为沫₂ C，钠₂ S.对于这两种产物的分离，用HCl浸出并使用热水。浸出产物的XRD图谱表明，可以生产出高纯度的碳化钼。研究了还原反应的动力学，发现机械活化降低了反应温度和活化能。