千亿体育

千亿体育

日本制铁大分制铁所降低铁损的措施

1 前言

千亿体育ribenzhitiegongsizaidafenzhitiesuoliangangchang,shishileyongyizuozhuanlujinxingtuoguihetuolin(chuilian1)hou,tongguozhongjianpaizhajinxingtuotan(chuilian2)deduogongnengzhuanlufa(murc)liangangxingongyi(rutu1)。murcfashitongguorexunhuanjishuhegaosuchuilianjishudekaifa,wanchengleduiputongganghegaoduangangdeshengchangongyi,zuoweitieshuiquanliangyuchulideliangangchang,tigaoletieshuiyuchulibilv(rutu2),quelilenianchan1000wandungangdeshengchantizhi。

日本制铁大分制铁所降低铁损的措施-1.png

日本制铁大分制铁所降低铁损的措施-2.png

murcgongyidexianzhutezhengshi,zaijinxingtuogui、tuolinchulihou,buzhuanyitieshui,tongguozhongjianpaizha,yongtongyizhuanlujinxingtuotanchuli,bingduichuilian2dezhajinxingrexunhuanliyong,shiresunshizuixiao。zheiyangjiuchanshenglereyuliang,zaizengjiachanliangshikeyidaliangshiyongfeigang。lingyifangmian,zaizuixiaohuagoumaifeigangdegaotieshuipeibizuoyeshi,zuoweilengquecailiao,xuyaotourudaliangdegutiyanghuatie(yixiachengyanghuatie),yanghuatiechanliangdidewentixianxian。suizhetiekuangshihejiaotandengyuanliaopinweideehua,weiyingduitieshuizhongzazhihanliang([si]、[p]、[s])dezengjia,yijijinyibujiangdichanshengdefuchanwu,bixujiangyanfazhongdianfangzaigaishantieshuiyuchuligongxu。

genjuyishangqingkuang,yikuodaluzhahefenchenxunhuanliyongweizhuyaomude,tongguojianshaojingliangongxudeluzhapaichulianghegaishanyanghuatiedeliyongfangfa,keyishitiesunjiangdi。


2 炼钢厂的渣、粉尘流程及铁损的降低


2.1大分制铁所炼钢厂简介

千亿体育dafenzhitiesuoliangangchangdezhuyaoshebeiyou: 2geyuleiguanche(tpc)chulizhan,1getieshuibaoshitieshuiyuchulifa(orp-m)chulizhan,3zuozhuanlu(yunzhuan2/3zuo),2zuoercijinglianzhenkongtuoqishebei(rh)he3zuolianzhuji(cc)。

千亿体育cong1986niankaishi,tieshuiyuchulicaiyonglezaitpctuoguichulihou,zaitieshuibaojinxingtuolinhetuoliuchulideorp-mchuli。yinci,shixianlejiangdichengben。danshi,youyufengejingliandereyuliangjiangdiwentiheturanghuanjingbiaozhunxiudingdeyingshishiyongxianzhi, 1998nianyinrulezhuanluxingtieshuiyuchulifa(murc),bingkuodaleyingyongfanwei。2002niankaishizaimurcxunhuanliyongluzhareliang,duiyuputonggang,jiangtieshuibaochulishebeizuoweichongfenliyongjinziziyoukongjiandegaosutuoliushebeilailiyong。zheiyang,yixunhuanliyongrezhalaijiangdipaichuxitongwaizhaliangweizhudehuanjinghexiexinggongyidedaojidagaishan。

2.2 扩大渣循环利用措施

千亿体育tu3shidafenzhitiesuoliangangchangdeluzhafashengzhuangkuang。yibufentuoliuzhazhijieyongyushaojie,danchucizhiwaidezhajingyouzhachulichang,zaiposui、zhengligongxuzhonghuishoucixingcailiao。huishoucixingcailiaohoudeluzha,weijiangdipengzhanglvjiangdabufenjinxingchenhuachuli,fahuodaochangwaihuochangneixunhuanzailiyong。2010cainianpaifangxitongwaizhaliang89kg/tzhong,changneizhiliu47kg/t。tongguoqianghuayilujicailiaoheliantieliangangxunhuanliyongweizhongxindechangneixunhuanliyong,2014cainian,changneizhiliuwei0kg/t,luzhachanshenghexunhuanliyonghuodelepingheng。tebieshizaigangzhaxunhuanliyongzhong,cong2010cainiande3kg/t,kuodadao2014cainiande12kg/t。qianyitiyucaiqudecuoshijiangzaihoumianjieshao。chucizhiwai,zuoweishaojiexunhuanliyong,changneihuishou12kg/t,qiyupaifangxitongwaidezha79kg/tquanbuyongyulujicailiaohedijigailiangdeng。

日本制铁大分制铁所降低铁损的措施-3.png

tu4shiliangangchangneidezhahuishouliucheng。zaimurc,rexunhuanliyonggaojiandudechuilian2zhahedijiandudechuilian1zha,shixianledafudujianshaoshengshihuishiyongliang,bingtongguoqianghuagaojianduzhadefenlei,jinyibujiangdileshengshihuishiyongliang。

日本制铁大分制铁所降低铁损的措施-4.bmp

千亿体育1)chuilian2zhayongyutpctuoguihezhuanluxunhuanliyong

千亿体育tongchangshijiangchuilian1hechuilian2hunhehuishoudezhapaifangdaobutongdepaizhaguan,zhihuishougaojiandudechuilian2zhayongyuzaixunhuan。weilezaitpctuoguizhongshiyongchuilian2zha,zaifuzhuyuanliaochejiandefensuigongxu,xinjianhegaizaochuilian2zhadeyuanliaojieshouxitongheshusongluxian,yongyushengchanchuilian2zhafen。ciwai,duishengyudechuilian2zha,tieshuiguihanlianggaodaozhizhuanluzhuangruguizengjiashi,zaixunhuanzhichuilian1,yongyuquebaojiandu。

2)zaokuaizhadehuishou

zaokuaizhajianduheal2o3hanliangdougao,yinci,chutidaicaowai,youyual2o3hanliangshangsheng,zharongdianjiangdi,duitigaozhahuaxingyouxiao,suoyiyongyuchuilianshijianduandechuilian1。

千亿体育tu5shiyishangkuodazhahuishoucuoshidezhuangkuang。yu2010cainianxiangbi,lenghuishouzhaliangdafuduzengjia,qijieguorutu6suoshi,dafudujiangdilexintouruchuilian1decaodanhao。

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2.3 扩大粉尘回收的措施

dafenzhitiesuoliangangchangdefenchenzhuyaofashengyuanshiorp-mdetieshuibaotuoliufenchen、zhuanlufenchen,zheixiefenchenzaichangneixunhuanyongyutieshuiyuchulihezhuanlu。ciwai,yibufenzhuanlufenchenzuoweihaiyuantieyuanliaozhuansongdaoguangtianzhitiesuo。dafenzhitiesuodetieshuiyuchuligongxu,beiyoufenchenhuishoudegunmojiheganzaojidengfenchenchulishebei,keyishengchanshuifen<1%,lijing<150μmdefenti。tongguoqianghuafenchenganzaoshebeinengli,tigaolegongjitpctuoguihezhuanludefenchenshengchannengli。youyucujinletuoguigongxudefenchenhuishou,fenchenkeyimanzutpctuoguisuoxudequanbuyanghuatie。ciwai,weilexunhuanliyongmurcdefenchen,chongfenliyongjiangzhuanlufenchenhunhe、chengxingheganzao,bingyakuaideshebei。tongguogaiyakuaishebeideyouxiaoliyong,cujinlefenchendezhuanluxunhuanliyong。tongguoyishangcuoshi,zhuanluhetpctuoguifenchendehuishouliyong,cong2010cainiande4.6kg/t,zengjiadao2014cainiande8.1kg/t。

2.4 大分制铁所精炼工序中的铁损问题

jingliangongxuchanshengdezhuyaotiesunyoufenchen、zhazhongdelitiehezhazhongdeyanghuatie。qianyitiyuzhapaifangliang,suiranzhengzaiqudeliuliangpingheng,danhuishoukunnandezhazhongyanghuatiebunengxunhuanliyongshi,huizaochengtiesun,yincijiangdipaifangdaoxitongwaidezhazhongyoujiatiefenshimuqiandeyanjiuketi。daomuqianweizhi,yizhizhiliyuqianghuachuilian2zhahetieshuizhadezhahuishou,nulijiangditiesunhao。danduimeiyouhuishoudechuilian1zha,chuleyongcixuankehuishoudetiefenyiwai,zuoweitiesunpaichudaoxitongwai。

tu7shichuilian1detiekuangshitouruliangyuchuilian1tingchuizhazhongt.fedeguanxi。suizhechuilian1tiekuangshidanhaodezengjia,chuilian1tingchuizhazhongt.feyezengjia。zheishiyinweizhongjianpaizhaxingchengzhongduanchuiliandejieguo,chuilian1dechuilianshijianyuewei3min,shijianjiaoduan,tiekuangshibuzuyihaiyuanchengjinshutie。tebieshizaigaotieshuipeibi(hmr)zuoyezhong,cunzaiweilelengquetieshuiertourudaliangtiekuangshi,daozhit.fehanlianggaodewenti。

日本制铁大分制铁所降低铁损的措施-7.png

2.5 降低铁损的思路

tu8shijingmurcchuilian1chulihou,yizhazhongt.fe(meiyoushiyongtiekuangshi)weijizhun,bijiaoletpctuogui(penchuifa)chulihout.fedeshiyanjieguo。congtuzhongkezhi,suizhejiandu(c/s,cao/sio2)deshenggao,t.fejiangdi,zaisuoyoudec/szhong,yunyongtpctuogui,keyidafudujiangdit.fe。

日本制铁大分制铁所降低铁损的措施-8.png

千亿体育genjushangshufenxi,zongjieguinachujiangditiesundesilu(rutu9)。weishituogui、tuolin(murcchuilian1)zhongdetiesunzuixiaohua,zhiliyujiangdizhalianghetiekuangshiweihaiyuandesunshi。chulegaojianduzhafenleihuishouyikuodazhahuishouzhiwai,haiyaoqianghuatpcpenchuituogui,bingliyongyanghuadudideyanghuatie(fenchendeng)。

日本制铁大分制铁所降低铁损的措施-9.png

3 通过TPC脱硅降低铁损的措施

3.1 扩大TPC脱硅处理

tu10shicongtpcchulichangdaozhuanluzhuangrudeguochengshiyitu。zaitpcchulichangyongshuangzhongguanpenqiang,congneiguanpenchuiqiti,waiguanpenchuifenti,jinxinggezhongchuli。fentiyiguidingdepeibicongjieshouguanpaichudaotishengguanhou,yasongdaopenchuiguan。tuoguijiyouchangneidefuzhuyuanliaochejianfensuishengchanbinggongji。

日本制铁大分制铁所降低铁损的措施-10.png

tpcchulihou,chugaoluzhawai,jiangtuoguishengchengdetuoguizhacongtpcsuizhetieshuiyikuaiyichudaotieshuibao,zaitieshuibaochulichangtuoliuchuliqian,qingdongtieshuibaojinxingbazha、paizha。paidaoshouzhaguandetuoguizhayundaorongzhachulichang,jinxinglengquechuli。

zuoweitpctuoguidecaoyuan,weilexunhuanliyongchuilian2zha,zaizhuanluzhachulichangjinxingchuilian2zhadefenleihuishouhexinsheletpcpenchuiyongfensuishengchanxian,tongshi,haixinsheleyouyutpctuoguierzengjiadetuoguizhachulishebei。

3.1.1 TPC脱硅剂的生产

tpctuoguijishizaifuzhuyuanliaochejianyonggunmojifensui。zhiqian,gaishengchanxianshengchantpchetieshuibaopenchuiyongshengshihuifen,danyunzhuanlvshangyouyuli,suoyixinshebeigaizaolechuilian2zhayuanliaodejieshouxitongheshusongluxian,yongyushengchanchuilian2zhadefenti。chuilian2zhahanyoushuifen,zhijieweifenhuashihuijiekuai,daozhipenchuishidusaipenqiang。yinci,liyongyuanyouderefengluxianggunmojineisongrurefeng,keyichuiganchuilian2zha。

千亿体育duituoguiyongfenchenjinxingganzaohefensuichuli,zuoweituoguijishiyong,danganzaojidenenglichengweifenchenshengchandepingjing。tongguoxinsheganzaoji,shixianlekuodafenchendeshengchannengli。zheiyang,keyibaozheng3000t/yueguimodetuoguiyongfenchen。

3.1.2 提高脱硅渣处理能力

youyukuodatuoguichulierzengjiadetuoguizhashidijianduqieliudongxinggaodezha。yinweishiconggaoguiquyujinxingtuoguichuli,tieshuixichudeshimodabufencanliuzaituoguizhazhong。yinci,zaishixiangaoxiaolvlengquejuyouliudongxingdezhahefangzhishimofenchenfeisandetongshi,xuyaotigaozhachulinengli。

千亿体育congpaizhaguanshangbusashuilengquetuoguizhashi,youyuliudongxinggao,biaomianninggu,shuinanyijintoudaoneibu,lengquedayuexuyao24h。yinci,weilegaoxiaolvchuli,caiqulezaijiaoduanshijianjiukeyilengquederechulifangshi。

weilefangzhituoguizhazhongdeshimofeisan,zaiyoujichenshebeidechangfangneirechulihou,posuichengdakuaibingcaiyongsashuiyicilengque。ranhou,jiangluzhahengxiangfangzhi,zaiyuyicilengquebutongdeercilengquechang,zaicijinxingsashuilengque,congertigaolengquexiaolv。

千亿体育rechulifangshiyucongzhaguanshangbusashuilengquexiangbi,xianzhuzengjialebiaomianji,keyiduanshijianlengque。zheiyangkeyizaiyue2hnei,jiangluzhawendulengquedaoyunshucheliangrefuhebiaozhunde100℃yixia,caiyonggaifangfanenggouzaiduanshijianneilengqueluzha。

3.2 TPC脱硅的氧化铁还原率评价

weipingjiatpctuoguideyanghuatiehaiyuanlv,caijiletpctuoguichulihoudezhayang,youchengfenzhikeyigusuanchutuoguizhazhongdet.fesunshiliang,congerjisuanchuyanghuatie(fenchenhechuilian2zha)dehaiyuanlv。suizheyanghuatietouruliangdezengjia,canliuzaituoguizhazhongweibeihaiyuandet.feliangjishao。tpctuoguidehaiyuanlvgaoda92%,keyigaoxiaolvcongyanghuatiezhonghuishoutiefen。

tpctuoguicaiyongpenchuifa,chuirudetuoguiji(qitiyang、yanghuatie)zaitieshuizhongshangfushi,jinxingtuoguifanying,tuoguixiaolvgao。ciwai,caiyongshangfangtouruyanghuatieshi,dingzhazhongt.feliangshangsheng,yanghuatiehaiyuannanyijinxing。zhuanluxingtieshuiyuchuli(murc)dezhazhongt.feliang,zaidijianduhegaoyangshixia,jinxingtuolinfanying,benyanjiurenwei15%-20%shishidangzhi。yumurcchuilian1xiangbi,zaizhazhongt.fehanliangdidetpcpenchuifadetpctuoguizhong,youxianxunhuanliyongfenchenhechuilian2zha,keyigaoxiaohuishouyanghuatiezhongdetiefen。

3.3 TPC脱硅循环利用吹炼2渣使铁损降低

zuoweitpctuoguidecaoyuan,chuantongshangshiyongshengshihuifen,danweiledadaotuoguizhaliangzuixiaohua,keyixunhuanliyongchuilian2zha。xinshehegaizaoleyongyuchuilian2zhadexindejieshouxitong、shusongluxian,bingliyongyuanyouderefengluzaigunmojineiganzao,shishengchantpcpenchuiyongdechuilian2zhafenchengweikeneng。

3.4 TPC脱硅的效果

千亿体育congtieshuihanguiliang0.58%jinxingtpctuogui,baozhengtuoguifududa0.15%,zhuanluzhuangruguijiangdao0.43%。ciwai,yongyutuoguidefenchenshiyongliangcong2010cainiande0.3kg/tzengjiadao2014cainiande7.7kg/t,zengjiale7.4kg/t。tongguozaihaiyuanlvwei92%detpcpenchuituoguizhong,liyongfenchentuogui,shitiesunjiangdi,xitongwaipaifangt.fejiangdile0.6kg/t。

4 提高转炉的氧化铁还原效率使铁损降低

4.1 降低转炉铁损的思路

千亿体育zaigaotieshuipeibilvzuoyeshi,murcdezuidatezhengzhiyishiresunshifeichangshao,zhuanludelengqueliaotouruliangyouzengjiadequshi。zuoweilengqueliaokaolvyanghuatieshi,yongtpctuoguixiaohao,keyihuodegaohaiyuanxiaolvdailaidetiesunjiangdixiaoguo,danshi,congzuoweiyanghuatiedefenchengongjiliangpingjinghebaozhengtuoliuchulisuoxuwendudejiaodu,tpctuoguishiyongdeyanghuatieyouxian,qijieguoshizhuanlutouruledaliangdeyongyulengquedetiekuangshi。

tourutiekuangshishiweiletigaotieshuituolinxiaolv,jiangditieshuiwendu,zhuyaoshizaimurcchuilian1touru。chuilian1dechulishijianduan,yue3min,tourudaliangdetiekuangshishi,tiekuangshibunengchongfenhaiyuan,shichuilian1zhazhongt.feliangshangsheng。chuilian1zhazaiyidaotuotanchuilian2zhiqian,yaojinxingpaichuchuilian1zhadezhongjianpaizha,haiyuanbuchongfenshihuidaozhitiesun。yinci,liyongtieshuizhongtanjinxingrongronghaiyuan,tigaoyanghuatiedehaiyuanxiaolv,zaijuyoureyuliangdegaotieshuipeibidemurczhongchengweizhongyaoketi。

weiletigaotiekuangshidehaiyuanxiaolv,caiquyuhaiyuanhezengjiafanyingjiemianhuoshiyonggutaiyanghuatieyutieshuizhongtanzhijiehaiyuandoushiyouxiaode。zaicongshangfangtianjiayanghuatieshi,weileyuzhaxiamiandetieshuizhijiefanying,yanghuatiexuyaobaozhengyidingdelijinghezhongliang。genjuyishangjielun,yanjiulezhuanlutigaoyanghuatiehaiyuanxiaolvdewenti。

4.2利用转炉粉尘提高还原效率

zhuanluxilifenchendefashengyuanshizhuanluchuilianshigaowenhuanjingxiadeweilifeisanfenchen,youyuweijinxingyanghuaerhanyoudaliangfeo(rongdian1370℃),yinci,yuhantiechengweijihuquanweife2o3(rongdian1566℃)detiekuangshibijiao,renweijuyourongjiexingyoushi。ciwai,jiangfenchenkuaihuahoucongshangfangtianjia,kejianshaojichensunshiheyutieshuijiechudezhijiehaiyuan。yinci,congrongjiexinghehaiyuanxingdejiaodukaolv,jiangfenchenkuaihuahouzaiyongyuzhuanluyaobitiekuangshiyouli。

4.2.1 转炉粉尘块化工艺

weilezaizhuanluzailiyongxilifenchen,zaifenchenkuaihuachejian,yongjiehejiyakuai(yixiachengfenchenkuaikuang)。shengchanliuchengshijieshoufenchenhejieheji,bianjiashibianhunhe,jinxingjiyachengxing,tongguozhengqiganzaoji,jiangshuifenganzaodao<1%hou,tourudaozhuanlufuzhuyuanliaoliaocang。

4.2.2 对转炉中氧化铁还原率的评价

千亿体育weilejisuanzhuanluzhongdeyanghuatiehaiyuanlv,zaichuilian1zhongtourutiekuangshihuofenchenkuaikuanghou,zaizhongjianpaizhashicaiquchuilian1zhayang,jinxinglehuaxuefenxi。jieguobiaoming,yongfenchenkuaikuangzhihuantiekuangshishi(shiyongtouruyanghuatiezhong50mass%yishangdefenchenkuaikuang),canliuzaichuilian1zhazhongdet.feliangjiangdi,congerqingchulefenchenkuaikuangdehaiyuanlvyaogaoyutiekuangshi。jisuandefenchenkuaikuangdehaiyuanlvwei82%,tiekuangshidehaiyuanlvshi58%。yutiekuangshixiangbi,fenchenkuaikuangdehaiyuanlvyaogaodeduo。

4.3提高转炉氧化铁还原率的效果

tongguokuodafenchenshengchannenglidecuoshi,zaitpctuoguizhongyouxianshiyongzhuanluxilifenchen。cong2010cainiande4.3 kg/tkuodadao2014cainiande5.3 kg/t,zengjiale1.0 kg/t。youyuzheixiangcuoshi,chongfenliyonglehaiyuanlv82%defenchenkuaikuang,shitiesunjiangdi,paifangdaoxitongwait.feliangjianshaole0.1 kg/t。

5 结语

千亿体育congxunhuanliyongluzhahefenchendejiaodu,duijiangditiesundecuoshizongjieruxia。

1)yikuodachuilian2zhadexunhuanliyonghekuodatpctuoguilaijiangdizhaliangweizhongxin,yu2010cainianbijiao,2014cainianpaifangdaoxitongwaidezhaliangdanhaojiangdile16kg/t。bansuixitongwaipaichuzhaliangdetiesundanhaojiangdile3 kg/t。

2)jisuanlemurcchuilian1hetpctuoguizhongyanghuatiedehaiyuanlv,an①tpctuoguiyongfenchenhaiyuanlv92%;②chuilian1kuaikuanghaiyuanlv82%;③chuilian1tiekuangshihaiyuanlv58%deshunxushiyongyanghuatie,tigaolehaiyuanxiaolv。ciwai,zaitpctuoguizhong,haihuishoulechuilian2zhazhongdeyoujiatie。

3)xiangduizhuanluweihaiyuansunshiduodetiekuangshi,tpctuogui(penchuifa)shiyongfenchentuogui,shitiesunjiangdile0.6 kg/t,zhuanlufenchenkuaikuangdeshiyong,shitiesunjiangdile0.1 kg/t,hejihuodelejiangditiesun0.7 kg/tdexiaoguo。  


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