SMELTING CHARGES AT INDIVIDUAL SMELTERS. 



655 



In the preceding smelting charge the proportions are 



Flux to ore 2Gf 



Fuel to ore 24 J 



Fuel to charge 19 



Average charge deduce! from rlata gii-oi in Table IV. 

 Ore, 300 pounds. Flux, 80.6 pounds. Fuel, 74. 9 pounds. 



Various ores 300 Dolomite 15.69 Charcoal 49.9 



n.matite 20.91 Coke 25 



Old slags 50 



l I 



Charge ("re and flux), 386.6 pounds. Smelting charge (ore, flux, and fuel), 461.5 pounds. 



In the average smelting charge the proportions are 



Flux to ore 29 



Fuel to ore 25 



Fuel to <liarge 19 



The general rule observed at this smelter is the following: The ore is made to 

 contain 30 per cent, of gangne, 30 per cent, of iron, and 20 per cent, of lead, and the 

 charges are smelted with 20 per cent, of fuel. 



SMF.LTER F. 

 Snultiiig charges made in August, 1880. 



Ore, 500 pounds. Flnx, 280 pounds. Fuel, 150 pounds. 



Ore-bed (very sill- Dolomite 110 Charcoal 130 



ceous) 500 Hematite 120 Coke 20 



Oldslnga 50 



Charge (ore and flux), 7SO pounds. Smelting charge (ore, flux, and fuel), 930 pounds. 



In the above smelting charge the proportions are 



Flux to ore 56 



Fuel to ore 30 



Fuel to charge 19J 



Average cliarflf calculated from data given in Table IV. 

 Ore, 500 pounds. Flux, 2 J3.4 pounds. Fuel, 2S8.8 pounds. 



Variousores 500 Dolomite 83.2 Fuel 238.8 



Hematite 100.2 



Old slags 50 



Charge (ore and flux), 733.4 pounds. Smelting charge (ore, flux, and fuel), 972.2 ponnds. 



In the average charge the proportions are 



Flux to ore 46J 



Fuel to ore 47| 



Fuel to charge 32^ 



