不溶性硫磺高温稳定性测定方法的研究

Research of testing methods for high-temperature stability of insoluble sulphur

介绍测定不溶性硫磺高温稳定性的两种方法(湿法和干法)并进行比较。湿法操作复杂,但物料受热均匀,结果较合理;干法操作简便,但少量物料温度不一致,分析结果偏低,但仍在可接受范围。两种方法都可满足工业应用的要求。

Two testing methods, i.e. wet and drying ones, for high-temperature stability of insoluble sulphur are described and compared. The wet method, although a little more complicated, has advantages of even heating of material that gives more accurate results; while, with more simple procedure, the drying one gives a little lower results due to uneven temperature of a small part of material, but is still acceptable. Both methods can satisfy the demand in industrial application.