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国家高技术研究发展计划(2012AA062302)

作品数:14 被引量:67H指数:4
相关作者:冯聪储满生唐珏薛向欣柳政根更多>>
相关机构:东北大学北京科技大学更多>>
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14 条 记 录,以下是 1-10
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Novel blast furnace operation process involving charging with low-titanium vanadium–titanium magnetite carbon composite hot briquette被引量:1
2016年
An innovative process of blast furnace (BF) operation involving charging with low-titanium vanadium-titanium magnetite carbon composite hot briquette (LVTM-CCB) was proposed for utilizing LVTM and conserving energy, In this study, the effect of LVTM-CCB charging ratio on the softening, melting, and dripping behaviors of the mixed burden was explored systemically, and the migration of valu- able elements V and Cr was extensively investigated. The results show that with increasing LVTM-CCB charging ratio, the softening inter- val T40 - T4 increases from 146.1℃ to 266.1℃, and the melting interval To - Ts first decreases from 137.2℃ to 129.5℃ and then increases from 129.5℃ to 133.2℃. Moreover, the cohesive zone becomes narrower and then wider, and its location shifts slightly downward. In addi- tion, the recovery ratios of V and Cr in dripped iron first increase and then decrease, reaching maximum values of 14.552% and 28.163%, respectively, when the charging ratio is 25%. A proper LVTM-CCB charging ratio would improve the softening--melting behavior of the mixed burden; however, Ti(C,N) would be generated rapidly in slag when the charging ratio exceeds 25%, which is not favorable for BF op- eration. When considering the comprehensive softening-melting behavior of the mixed burden and the recovery ratios of V and Cr, the rec- ommended LVTM-CCB charging ratio is 20%.
Wei ZhaoMan-sheng ChuHong-tao WangZheng-gen LiuYa-ting Tang
关键词:CHARGINGMAGNETITE
一种典型高铬型钒钛磁铁矿的基础特性
采用微型烧结装置,对进口高铬型钒钛磁铁矿以及现场实际使用的若干种烧结用铁矿粉的烧结基础特性进行了系统研究。研究结果表明,不同铁矿粉的烧结基础特性差异较大。在所用的铁矿中,进口高铬型钒钛磁铁矿的同化温度高(1335℃)、液...
张勇周密储满生薛向欣姜茂发
关键词:烧结基础特性烧结矿优化配矿
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中性气氛下钒钛磁铁矿高炉渣系研究被引量:4
2015年
以钒钛磁铁矿现场高炉渣为基础,纯化学试剂调制渣样,在中性气氛条件下研究了炉渣二元碱度及Mg O,Al2O3,Ti O2,V2O5含量对实验渣系冶金性能的影响.结果表明:增加碱度和Mg O含量,炉渣熔化性温度(tm)、初始黏度(η0)和高温黏度(ηh)呈先降低后升高趋势;增大Al2O3含量,炉渣tm升高,η0先降低后升高,ηh呈上升趋势;增大Ti O2含量,炉渣tm升高,η0和ηh逐渐下降,炉渣黏流活化能升高,热稳定性变差;增大V2O5含量,炉渣tm先降低后升高,η0和ηh逐渐增大.高炉冶炼钒钛磁铁矿适宜渣系为:二元碱度1.15,Mg O,Al2O3,Ti O2,V2O5质量分数分别为13%,13%,7%,0.30%.
储满生冯聪唐珏柳政根
关键词:钒钛磁铁矿高炉渣炉渣成分冶金性能
Effect of basicity on sintering behavior of low-titanium vanadium-titanium magnetite被引量:10
2015年
Basicity has an important effect on the sinter quality, especially for low-titanium vanadium-titanium sinter. The effect of basieity on sintering behavior of low-titanium vanadium-titanium mixture, and the transference and distribution of element in sintering process were researched by sinter pot test, mineralogical analysis, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) analysis. The results show that CaO preferentially reacts with TiO2, generating pervoskite, so that the total liquid phase content of the sinter is low. There is an increase in the perovskite concentration of the sinter with the basicity ranging from 1.9:1 to 2.7:1. With increasing the basicity, the calcium ferrite content increases slightly and then rises rapidly, while the silicate content decreases and the metallurgical property of the sinter is improved. As for the distribution of these elements in the sinter, Ti occurs mainly in perovskite, V occurs mainly in silicate, and Fe occurs mainly in magnetite and hematite. The most abundant occurrence of Ca and Si occurs in silicate and perovskite. With increasing the basicity, the contents of A1 and Mg increase in calcium ferrite, while they decrease in other minerals.
杨松陶周密姜涛王艳军薛向欣
关键词:SINTERBASICITYMINERALOGYCAO
Effect of MgO content in sinter on the softening–melting behavior of mixed burden made from chromium-bearing vanadium–titanium magnetite被引量:15
2016年
The effect of sinter with different MgO contents on the softening-melting behavior of mixed burden made from chro- mium-bearing vanadium-titanium magnetite was investigated. The results show that with increasing MgO content in the sinter, the softening interval and melting interval increased and the location of the cohesive zone shifted downward slightly and became moderately thicker. The softening-melting characteristic value was less pronounced when the MgO content in the sinter was 2.98wt%-3.40wt%. Increasing MgO content in the sinter reduced the content and recovery of V and Cr in the dripped iron. In addition, greater MgO contents in the sinter resulted in the generation of greater amounts of high-melting-point components, which adversely affected the permeability of the mixed burden. When the softening-melting behavior of the mixed burden and the recovery of valuable elements were taken into account, proper MgO con- tents in the sinter and slag ranged from 2.98wt% to 3.40wt% and from 11.46wt% to 12.72wt%, respectively, for the smelting of burden made from chromium-bearing vanadium-titanium magnetite in a blast furnace.
Zheng-gen LiuMan-sheng ChuHong-tao WangWei ZhaoXiang-xin Xue
关键词:IRONMAKINGMAGNETITEMAGNESIASOFTENINGSINTER
烧结矿碱度对高铬型钒钛磁铁矿高炉炉料结构的影响
保证炉渣碱度R_2=1.15,以不同碱度的高MgO(2.63%)烧结矿配加低MgO(1.14%)球团矿为综合炉料,重点研究了高铬型钒钛磁铁矿综合炉料的软熔滴落性能。结果表明,随烧结矿碱度增加,综合炉料的软化开始和终了温度...
储满生赵伟唐珏柳政根陈双印付小佼
关键词:烧结矿碱度炉料结构
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钒钛烧结矿熔剂含量对高炉合理炉料结构的影响
为了提高高炉冶炼钒钛磁铁矿水平,本文基于某钢厂现场生产条件,在保证炉渣二元碱度R=1.10不变的前提下,研究烧结矿碱度和烧结矿中MgO含量对综合炉料软熔滴落的影响。结果表明,适当提高烧结矿碱度,降低烧结矿中MgO含量,有...
陈立杰储满生柳政根付小佼于洪翔唐珏
关键词:钒钛磁铁矿烧结矿碱度
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MgO对高炉冶炼高铬型钒钛磁铁矿合理炉料结构的影响
以高铬型钒钛磁铁矿为主要原料,进行MgO在高炉冶炼高铬型钒钛磁铁矿炉料结构中的优化使用试验,结果表明:烧结矿中MgO含量从1.95%增至2.63%,垂直烧结速度下降,利用系数变化不大,成品率、转鼓指数、综合指标得到改善,...
储满生唐珏柳政根陈双印付小佼汤雅婷
关键词:氧化镁高炉合理炉料结构
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适用于气基竖炉还原工艺的煤气化工艺评价及合理选择
基于现有煤气化工艺特征和竖炉还原工艺需求,并同时考虑投资成本、氧耗、煤耗、冷煤气转化效率、煤气中CO/H、煤气氧化度、煤气中有效还原气含量、净热效率、碳转化率、单炉产能等指标,本文运用多指标综合加权评分法对Lurgi、E...
储满生李峰唐珏冯聪汤雅婷柳政根
关键词:煤气化竖炉
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用综合加权评分法优化高铬型钒钛矿电热熔分工艺被引量:4
2016年
以气基竖炉还原得到的金属化率为95%的高铬型钒钛磁铁矿球团为原料,在高频感应炉内进行电热熔分深度还原.设计了三因素三水平正交试验,重点考察熔分温度、熔分时间及二元碱度对熔分效果的影响,并运用综合加权评分法对试验结果进行分析,发现熔分后可获得含钒、铬铁块和高钛渣.适宜的高铬型钒钛磁铁矿电热熔分参数为:二元碱度1.1,熔分温度1 650℃,熔分时间45 min.对熔分综合指标影响大小依次为二元碱度>熔分温度>熔分时间.另外,分析二元碱度对熔分效果的影响规律及作用机理可知,随碱度增大,铁、钒、铬及钛的收得率呈先上升后下降的趋势,在二元碱度为1.1时,高铬型钒钛矿熔分效果最好.
李峰储满生唐珏冯聪
关键词:正交试验
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