A thermodynamic model was developed to study the roasting of molybdenite ore into molybdenum trioxide in a multiple-hearth furnace roaster. The model was developed using FactSage^™, a software specializing in thermochemical simulations. The model assumes thermodynamic equilibrium between the solid and gaseous phases on each hearth. The results from the model were compared with operational data obtained from an earlier paper regarding molybdenite conversion at the then Climax Molybdenum Co. roaster in Langeloth, PA, USA. A good correlation has been observed between the conversion of molybdenum-containing species on each hearth and experimental data from the Climax roaster. The developed model also describes the behavior of some of the minor compounds typically present as impurities in molybdenite concentrates.

建立了一个热力学模型来研究在多炉膛焙烧炉中将辉钼矿矿石焙烧成三氧化钼。该模型是使用FactSage ^™开发的，FactSage ^™是专门用于热化学模拟的软件。该模型假设每个炉膛上的固相和气相之间存在热力学平衡。该模型的结果与从早期论文获得的运营数据进行了比较，该数据涉及当时位于美国宾夕法尼亚州兰格洛斯的Climax Molybdenum Co.焙烧炉中的钼矿转化。已观察到每个炉膛上含钼物质的转化与来自Climax焙烧炉的实验数据之间具有良好的相关性。开发的模型还描述了一些次要化合物的行为，这些化合物通常以辉钼矿精矿中的杂质形式存在。