含雜質(zhì)物質(zhì)化學方程式的計算

Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.不純物質(zhì)與純凈物之間的質(zhì)量轉(zhuǎn)化1.1000噸含氧化鐵80%的赤鐵礦石中含氧化鐵

噸；2.

噸含氧化鐵80%的赤鐵礦石中含氧化鐵160噸。

不純物質(zhì)的質(zhì)量純凈物的質(zhì)量x純凈物的質(zhì)量分數(shù)÷純凈物的質(zhì)量分數(shù)1000x80%160÷80%Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.有關(guān)含雜質(zhì)物質(zhì)問題的計算例:

1000t含氧化鐵80%的赤鐵礦石，理論上可煉出含鐵96%的生鐵的質(zhì)量是多少？Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.解：氧化鐵的質(zhì)量：1000t×80%=800t設(shè)：理論上可煉出鐵的質(zhì)量為XFe2O3+3CO====2Fe+3CO21602X56800tX800tx=560t2×56

x高溫=折合為含鐵96%的生鐵的質(zhì)量為560t÷96%=583t答：可煉出生鐵為583t。Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.1000tx80%x≈583t11296%x解：設(shè)：理論上可煉出含鐵96%的生鐵的質(zhì)量為XFe2O3+3CO====2Fe+3CO21601121000tx80%96%X高溫=答：可煉出生鐵為583t。Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.練習：要煉出含雜質(zhì)3%的生鐵2000噸，需要含四氧化三鐵質(zhì)量分數(shù)為90%的磁鐵礦石多少？Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.解：鐵的質(zhì)量：2000t×(1-3%)=1940t設(shè)：可煉出四氧化三鐵的質(zhì)量為XFe3O4+4CO====3Fe+4CO2

232168X1940t高溫

232xx≈2679t1681940t=折合為磁鐵礦石的質(zhì)量為2679t÷90%≈2977t答：磁鐵礦石的質(zhì)量為2977t。Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.解：設(shè)：需要磁鐵礦石的質(zhì)量為XFe3O4+4CO====3Fe+4CO2

23216890%X2000tx（1-3%）高溫

23290%xx=2977t1682000tx(1-3%)=答：磁鐵礦石的質(zhì)量為2977t