Calculation of raw materials required for 45 ferrosilicon:
(1)Amount of silica added
The silica addition amount of 45 ferrosilicon is basically the same as the calculation method of 75 ferrosilicon, except that the silicon recovery rate is calculated as 96%.
The amount of silicon entering ferrosilicon from 100 kilograms of silica is:
100×98%×28/60×96%=43.7kg
Amount of 45% ferrosilicon that can be smelted:
43.7÷45%=97kg
The silica required for one ton of 45 ferrosilicon is:
100/97×1000=1040kg
(2) Adding amount of coke and steel chips
100 kg of silica requires 52 kg of coke and 54 kg of steel chips (see page 25)
The amount of coke required for one ton of 45 ferrosilicon is
1040×52/100=550kg
The amount of steel chips is:
1040×54/100=560kg
The above calculation shows that smelting one ton of 45 ferrosilicon requires 1040 kilograms of silica, 550 kilograms of coke, and 560 kilograms of steel scraps.
