共查询到19条相似文献,搜索用时 156 毫秒
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含磷量高的钢材可塑性和韧性水平都较低,因此为了降低磷含量,避免低温环境下钢材冷脆断裂的风险,提升优质钢材产量,就必须要从炼钢工艺上进行优化.基于脱磷热力学的基本原理,分析了在大型转炉平台上探索稳定创新优质脱磷工艺,实现了生产低磷洁净钢材的工艺路径. 相似文献
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在鞍钢第二炼钢厂LD90t转炉上开展了留渣操作的综合研究,主要分析留渣与不留渣情况下,成分变化及性能,对磷、硫在渣和钢中的分配情况作了初步探讨。 相似文献
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磷在钢中作为一种有害元素,必须在冶炼过程中将其去除。脱磷是转炉冶炼最重要的任务之一。低磷钢的冶炼对转炉冶炼工艺提出了更为严格的要求。在理论分析的基础之上,通过对实际生产中数据的汇总,分析了温度、炉渣碱度、碳含量炉渣氧化性、留渣操作及双渣操作等因素对转炉脱磷效果的影响,为提高天钢转炉的脱磷效果提供了参考。结果表明,保持相对较低的熔池温度、造高碱度的炉渣、保持一定的炉渣氧化性以及留渣和双渣操作等,都有利于脱磷反应的进行。 相似文献
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In order to examine the possibility of utilizing Mn ore in the pretreatment process of liquid iron, experiments were carried out in a system with liquid iron and CaO‐SiO2‐MgO‐Al2O3‐FeO slag with additives (Mn ore and Fe2O3+MnO2) in a magnesia crucible at 1673K. When Mn ore was added to the pretreatment slag, decarburization, desiliconization, dephosphorization and desulphurization proceeded simultaneously with the reduction of Mn ore. The reduction rate of MnO and the Mn concentration in the melt increased with increasing initial Si content. The maximum dephosphorization was obtained when the additive consisted of 66.6 mass% Fe2O3 and 33.4 mass% MnO2. The desulphurization ratio increased with increasing the relative amount of MnO2 in the additives. The amount of additives comprising Fe2O3 and MnO2 required for a targeted manganese content could be predicted using the mass balance. Effects of the additives on dephosphorization were also estimated. 相似文献
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Inrecentyears ,thedemandforhighercleanli nesssteelhasbeen greatlyincreased .Alargeamountofhighqualitysteelrequiresthephosphoruscontentlowerthan 0 .0 15 % .Thephosphoruscon tentinsomespecialsteeltypes ,forexample ,steelpipeforlowtemperature ,specialdeep drawingste… 相似文献
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在实验室利用转炉渣配制的铁水脱磷剂进行铁水预脱磷试验,测定了脱磷剂组成等因素对脱磷率的影响。结果表明:在铁水脱磷前[Si]≤0.15%条件下,当脱磷剂中转炉渣配比为80%时,相应铁水脱磷率约为78%;Fe2O3和BaCO3代替转炉渣的合适替代量分别约为5%和10%;脱磷剂中(P2O5)含量的增加会导致脱磷率的显著降低,其影响关系式为:ηp(%)=84.01—4.60(P2O5%)。 相似文献