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一试样的制备按GB-3045-82,样品全部通过100目。二主要试剂和试验装置除硫:利用颗粒活性二氧化锰或粒状钒酸银或GB223.2-81钢铁及合金中硫量的测定《燃烧-碘酸钾容量法》。非水滴定溶液:于1000ml量瓶中加入500ml乙醇,25ml丙三醇,25ml乙二胺,0.3～1g氢氧化钾(用少量水溶解),15ml百里酚酞乙醇液(0.5%)和1.5ml茜素黄R乙醇液(0.1%),然后用乙醇稀释至1000ml。标定:精确称取已于270℃干燥的基准碳酸钠0.01～0.025g置瓷舟中,用0.1g高纯二氧化硅覆盖,
Preparation of a sample according to GB-3045-82, the sample all through 100 mesh. Two main reagents and test equipment Desulfurization: The use of granular activated manganese dioxide or granular silver vanadate or GB223.2-81 Determination of sulfur in steel and alloy combustion - potassium iodate capacity method. Non-aqueous titration solution: Add 500ml ethanol, 25ml glycerol, 25ml ethylenediamine, 0.3 ~ 1g potassium hydroxide (dissolved in a small amount of water), 15ml thymolphthalein ethanol solution (0.5%) and 1.5ml Alizarin yellow R ethanol solution (0.1%) and then diluted to 1000 ml with ethanol. Calibration: Accurately weigh the reference sodium carbonate at 270 ℃ drying 0.01 ~ 0.025g set porcelain boat, covered with 0.1g of high-purity silica,