Several methods for analysis of carbon and sulfur in iron and steel
1, (high frequency infrared carbon sulfur analyzer) infrared absorption method: the carbon and sulfur in the sample is heated by high temperature under oxygen enrichment, which is oxidized to carbon dioxide and sulfur dioxide gas. After treatment, the gas enters the corresponding absorption cell, and absorbs the corresponding infrared radiation. The detector is transmitted to the signal, and the output results are processed by the computer. This method has the characteristics of accurate, fast, high sensitivity, high and low carbon sulfur content, the use of this method of infrared carbon sulfur analyzer, a higher degree of automation, the price is relatively high. 2, (conductance carbon sulfur analyzer) electrical conductivity method: This is a method to measure the carbon content of carbon and sulfur content. After high temperature combustion, the mixed gas produced by the sample was measured. For the determination of low carbon, sulfur. 3, (common carbon sulfur analyzer) capacity method: commonly used in the measurement of carbon as a gas capacity method, the measurement of the amount of sulfur for the iodine method, acid-base titration. In particular, gas capacity method is fast and accurate, and it is the most common method for carbon and sulfur determination. The accuracy of carbon sulfur analyzer is 0.030%, and the lower limit of sulfur content is 0.005%, which can meet the needs of most applications. 4, (manual carbon sulfur analyzer) titration method: the non water titration apparatus is used for the determination of carbon and sulfur in iron and steel. And electric arc furnace, suitable for general laboratory, the use of the furnace, such as laboratory. 5, (carbon and sulfur determination instrument) gravimetric method: commonly used to absorb carbon dioxide, carbon dioxide, carbon content. Sulfur is commonly determined by wet, acid decomposition of the sample oxidation, change of SO4, then in the medium of hydrochloric acid added barium chloride, BaSO4 generation, by sedimentation, filtration, washing, burning, weighing the final calculation of sulfur that content. The disadvantage of weight method is that the analysis speed is slow, so it is impossible for the analysis of carbon and sulfur in the field of enterprise. The advantages of the method are high accuracy. It is recommended as a standard method, and it is suitable for standard laboratories and research institutes. 6, the determination of the content of carbon and sulfur metal and ICP method, direct reading spectrometry, X-ray fluorescence spectrometry, mass spectrometry, chromatography, activation analysis method etc., each has its advantages and scope of application. Wuxi Jiebo Electrical Technology Co. Ltd.
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