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Depending on the ore, we process it using the following methods: We feed ore into a series of crushers and grinding mills to reduce the size of the ore particles and expose the mineral. Water is also added, which turns the ore into a slurry.read more
Silver processing History. Silver was discovered after gold and copper about 4000 bce, when it was used in jewelry and as a medium of... Ores. Although some ores contain silver as their largest metal value, virtually none has silver as its... Mining and concentrating. ...read more
The . Ore processing. Ore processing. At the processing plant, gold and are extracted from the ore. The processing plant alternates between treating ore from the Martha Mine open pit and from the Favona underground mine. Ore processing consists of the following stages:read more
The that remained at the bottom of the cupel was run-off and solidified into blocks. Since lead was also valuable, it was recovered by placing the litharge lead oxide remaining from the cupellation into yet a third furnace and heated to 250 degC and air was blown through it. The lead was run-off and formed into rods.read more
· Lead ores containing silver are extracted by , a process developed by the Chaldeans as early as 2,500 B.C. Today, the involves heating crushed ore on a porous bed of bone ash until it melts. The lead and other impurities are absorbed into the bone ash, and the molten silver is drawn off.read more
Learn all about platinum as a precious metal, and the centuries long processes of and refining that have made it so integral to many parts of the world. Enjoy a detailed discussion on the history of platinum and refining, including facts, figures, pictures and charts to help explain.read more
Silver has been known since ancient times. Silver is mentioned in the Book of Genesis, and slag heaps found in Asia Minor and on the islands of the Aegean Sea indicate that silver was being separated from lead as early as the 4th millennium BC. The silver mines at Laurium were very rich and helped provide a currency for the economy of Ancient Athens. It involved mining the ore in underground galleries, washing the ores and smeltingit to produce the metal. Elaborate washing tables still exist at the site using rain w…read more
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