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用ＴＧ－ＤＴＡ热分析法研究了砷黄铁矿在不同升温速度和不同气氛下的焙烧过程。砷黄铁矿在较慢的升温速率和较高氧气浓度的焙烧气氛中将导致生成较多的ＦｅＡｓＯ４。金精矿的焙烧起始温度介于黄铁矿和砷黄铁矿的起始温度之间，ＤＴＡ曲线的峰顶温度随气氛中氧气的浓度增大而变高。在氧气浓度较低时，砷、硫的脱除率为８９％，在氧气浓度较高时，砷、硫的脱除为９２％左右。
TG-DTA thermal analysis of arsenopyrite pyrite at different heating rates and different atmosphere roasting process. Arsenopyrite in the slower heating rate and higher oxygen concentration in the roasting atmosphere will lead to more FeAsO4. The initial calcination temperature of gold concentrate is between the initial temperature of pyrite and arsenopyrite, and the peak temperature of DTA curve increases with the concentration of oxygen in the atmosphere. When the oxygen concentration is low, the removal rate of arsenic and sulfur is 89%. When the oxygen concentration is high, the removal rate of arsenic and sulfur is about 92%.