Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: May 23, 2025
By any of these other methods very philosophical they are, I admit we could not accomplish this. The slags would all contain more or less metal; and when I inform you, that we can afford to remelt those slags if they contain only a half per cent. of copper, you will perhaps understand our reasons for still adhering to our venerable system.
Most of the iron factories remelt large quantities of old iron, to be used with the new, and this will lessen each year the demand on the ores. It is also possible that new deposits of iron ore will be found and these will greatly increase the supply. But from the whole iron situation we may draw the following conclusions: First, the amount of iron remaining in the ground is very uncertain.
Is it not probable that in the process of casting, little drops of molten metal are sometimes splashed out of the stream, which immediately solidify and become coated with a skin of oxide, then falling back into the stream of rapidly cooling metal, they do not remelt, neither do they weld or amalgamate with the mass, owing to this protective coating, thus forming dangerous flaws in the casting?
The man who carried through our work either did not know or paid no attention to the previous figures. Likewise we were told that it was out of the question to pour the hot iron directly from the blast furnace into mould. The usual method is to run the iron into pigs, let them season for a time, and then remelt them for casting.
Word Of The Day
Others Looking