ICP-MS法炼钢厂转炉渣成渣路线研究
在阅读大量文献的基础上，本文通过ICP-MS法对涟钢炼钢转炉吹炼第5min、10min、15min及溅渣护炉后渣样和目标钢样进行成分分析，在CaO-SiO2-FeO伪三元相图中绘制成渣路线图，研究涟钢转炉造渣制度，对涟钢转炉造渣制度提供建设性建议。
由绘制的成渣路线图可知，涟钢炼钢转炉成渣路线沿ABC路径，即低FeO成渣路线（钙质成渣路线）。采用钙质成渣路线进行转炉冶炼操作，在吹炼中期炉渣C-O反应剧烈，FeO迅速降低，石灰化渣较为缓慢。在吹炼中期容易出现炉渣“返干”现象，影响磷、硫的脱除效果。在吹炼中期应适当提高枪位降低氧压，以增加脱磷效果。经分析终点渣FeO含量在15。67%，碱度在6。2能获得最好的脱磷效果。
毕业论文 关键词：转炉；炉渣；成渣路线；造渣制度
Abstract Different Smelting slag formation route in the Converter smelting process have great impact on Smelting operation Stability, target steel components shooting and lining life。 Lianyuan Iron and Steel Company`s top and bottom blowing converter Has slagging speed, strong bath stirring advantages。 In the Converter smelting process , using different initial slag slagging system formed, and the amount of slag and slag interim final slag composition varies, so it has a different route into the slag。
On the basis of reading a lot of literature, the paper issued by ICP-MS meyhod for Lianyuan Steel steelmaking converter blowing first 5min, 10min, the end of slag samples, after slag splashing slag samples and target samples of steel components were analyzed。 And then , Draw the slagging route in the CaO-SiO2-FeO pseudo-ternary phase diagram studying the converter slagging system of Lianyuan Iron and Steel converter slagging system and provideing constructive suggestions。
By the drawing of slagging route shows that Lianyuan converter steel slag forming route along path ABC, the low FeO into the slag line (calcium slagging path)。 Use of calcium slagging route smelting operations in the mid-blowing slag C-O violent reaction, FeO decreases rapidly and lime slag more slowly。 In the mid-prone blowing slag "back to dry" phenomenon, affecting Dephosphorization, desulfurization, suitable for smelting iron phosphorus。 In the mid-blowing should increase the scramble to reduce the oxygen blowing pressure to increase the dephosphorization effect。 The end of the slag FeO content in 15。67%, alkalinity 6。2 to get the best effect dephosphorization。
Keywords: Converter；slag；slag forming route；slagging system
目 录
第一章 绪论 1
1。1研究背景 1
1。2炼钢转炉概述 1
1。2。1转炉炼钢的发展 1
1。2。2炼钢的基本任务 2
1。3转炉造渣 3
1。3。1造渣料种类及炉渣的形成 3
1。3。2造渣方法 5
1。3。3快速化渣措施 6
1。4 渣中主要化学反应 7
1。4。1脱磷反应 7
1。4。2脱硫反应 8
1。4。3脱碳反应 9
1。4。4硅、锰的氧化 9
1。5转炉成渣路线研究现状 10
1。4。1铁质成渣路线 11
1。4。2钙质成渣路线 12
第二章 ICP-Ms法测定转炉渣成分 13
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