最新硫铁矿和磁硫铁矿中硫S与铁Fe的含量.doc

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1、__________________________________________________硫铁矿和磁硫铁矿中硫S与铁Fe的含量与烧渣中铁Fe含量的关系1.硫铁矿磁性焙烧的反应方程式：（前提条件是:Fe：S接近0.875）3FeS2+8O2=Fe3O4+6SO23x（56+64）64__________________120矿中铁Fe含量铁粉中铁Fe%=————————————————x100%100–（矿中含硫S-1）+矿中含硫Sx64/1922.磁硫铁矿磁性焙烧的反应方程式：（前提条件是:Fe：S接近1.53）3Fe7S8+38O2=7F

2、e3O4+24SO23x392+256)7x64________648矿中铁Fe含量铁粉中铁Fe%=————————————————x100%100-（矿中含硫S-1）+矿中含硫Sx448/7683.矿中Fe:S在0.875-1.53之间时：例如：含硫S：43%、含铁Fe：41%时，要先计算Fe7S8和FeS2含量设：Fe7S8含量X份、FeS2含量Y分，则：256X64Y________+______=43(1)256X+345.6Y=27864648120392X56Y________+____=41(2)392X+302.4Y=26568648

3、120收集于网络，如有侵权请联系管理员删除__________________________________________________硫铁矿份数Y=70.982，磁硫铁矿份数X=16.897硫铁矿中铁含量Fe：56/120x70.982=33.125磁硫铁矿中铁含量Fe:392/648x16.894=10.222硫铁矿中铁Fe结合氧O2：33.125x64/(3x56)=12.619磁硫铁矿中铁Fe结合氧O2：10.222x(28x16)/(21x56)=3.894考虑一个残硫，100份矿焙烧后得渣：100-42+12.619+3.894=7

4、4.51即，一吨该矿焙烧后可得到745.1公斤干渣，渣中铁Fe含量计算：41%/0.7451=55.026%注：式中加黑加杠数值随矿中含硫含铁变化而变化。初中英语八大时态综合时态练习(   )1.What_____you_____overtheweekend?             A.will;do            B.does;do          C.did;do            D.were,;doing(   )2.XiaoLiusually_____toschoolbybikelastyear.A.goes        

5、        B.went                C.willgo             D.isgoing(   )3.What_____inourtown100yearsfromnow?             A.happened        B.ishappened     C.hashappened  D.willhappen(   )4.Mr.Smith_____toseeyouinanhour.             A.came               B.hascome         C.willcome   

6、     D.comes(   )5._____you_____fromyourparentsrecently?             A.Did;hear        B.Have;heard    C.Do;hear         D.Will;hear(   )6.We_____TVathomethistimelastnight.A.werewatching B.watched           C.havewatched  D.wouldwatch(   )7.We_____over1500Englishwordsbytheendof

7、lastmonth.             A.havelearned   B.hadlearned     C.willlearn       D.learnt(   )8.She_____inShanghaifortenyearssince1992.A.haslived         B.hadlived         C.lived               D.willlive(   )9.She_____inShanghaifortenyears.        A.haslived         B.hadlived      

8、   C.lived               D.willlive(   )10.Weallknowth