Sometimes gravity separation is employed prior to flotation; this results in a concentrate containing up to 50 percent platinum metals, making smelting unnecessary.
Heat up your furnace and get smelting.
At some time during the copper period, a new kind of "copper" happened to be made by smelting together two separate ores, one bearing copper, the other tin.
Glass is easily made by smelting sand in a furnace.
Copper wire, redstone, and refined iron (made by smelting iron ingots) are needed for (arguably) the most important IC2 produced material, the electronic circuit.
The large quantity of electrical current employed in the process and the typically large-scale output quantities combine to make aluminum smelting a high energy consuming industry.
Retired railway workers, some in their 80's and 90's, came forward, and eight steam engines were painfully rebuilt, the parts made from smelted brass and iron.
Retrieve the two iron ingots that you have smelted.
BOWDOINHAM, Me. — What observations would Herman Melville, the great bard of the whaling industry, make about smelts, a variety of fish so modest in size that the limits Maine imposes upon anglers are a matter of quarts, not inches?
Egyptology: Space Jewels The earliest known iron artifacts are Egyptian beads dated to about 3200 B.C. Now researchers using advanced X-ray techniques and neutron radiography have determined that these beads were made not by smelting iron ore, a technology developed later, but from meteorites, pounded into thin sheets and rolled into tubes.
