Problem 1

A copper ore has the following proximate analysis :

and .

It is smelted in a reverberatory furnace using pure limestone as a flux. The slag has and .

Calculate (per 1000 of ore) weight of limestone, slag and matte.


Solution:

In solving material balance it is importantto have understood the chemistry of matte smelting.

In this problem slag consists of  and  slag will have all  in slag
.

All  of ore enters into slag. balance gives weight of slag .

To find weight of limestone we have to calculate .

.

Matt is a mixture of . for all calculation purposes. There is no loss of  in slag. All copper of ore enter into matte.

There is loss of iron in slag.



Calculation gives weight of matte .