题目内容
我市庐江县小包庄去年发现一大型铁矿,主体为磁铁矿.冶炼磁铁矿的反应:4CO+Fe3O4
3Fe+4CO2.用100t含Fe3O480%的磁铁矿石,理论上冶炼含杂质4%的生铁多少?(答案保留一位小数)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824110641819473.png)
试题分析: 100t含Fe3O4 80%的磁铁矿石中Fe3O4的质量为100t×80%=80t
设理论上冶炼含杂质4%的生铁质量为x
4CO+Fe3O4
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824110641819473.png)
232 168
0t x(1﹣4%)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824110641881433.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824110641928670.png)
x≈60.3t
答:理论上冶炼含杂质4%的生铁质量为60.3t.
![](http://thumb2018.1010pic.com/images/loading.gif)
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