Research on Rapid Detection Method of Sulfate Sulfur in Coal

Sulfur in the coal exists mainly in the following three forms: sulphate sulfur, iron sulfide sulfur and organic sulfur. Sulphate sulfur, which cannot burn in the air, is incombustible sulfur. What's more, using national standard methods to determine sulphate sulfur content is process-complex and time-consuming. Using rapid detection method, the coal sample was ashed with slow ashing method, thus obtaining the sulfur content in coal ash using sulphur analyzer. Theoretically speaking, the method can get sulphate sulfur content in coal. Moreover, this paper analyzed precision and accuracy of rapid detection method, thereby obtaining the mathematical model of measuring the sulfate sulfur content utilizing rapid detection method and national standard method, which lays the foundation for promoting rapid detection method and formulating relevant standards.