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Show THE STORY OF TOOELE 'I i 111' .""s ; One of the last processes at Tooele is the removal of dross from lead kettles prior to moulding the mstal. Here a bucket of dross is being hoisted from a huge kettle. (Editor's Note: This is the eiKhth of a series of eight articles titled "The Story of Tooele".) Last, but not least in importance by any means, is the copper smelter smelt-er at the Tooele smelting works. After the ores of various types are blended to form an easy smelting charge, they are fed in batches into the roaster. The roaster does not smelt the charge but drives off moisture and oxidizes a portion of the sulphide materials. Naturally, gases are formed in this process, but practically all solids contained in these gases are formed in this process, but practically all solids contained in these gases are recovered recov-ered in dust chambers and a Cot-trell Cot-trell precipitating plant. The calcine from the roaster Is drawn off into 4-ton cars and transported trans-ported to the reverberatory furnace, fur-nace, where the second major step in copper smelting is performed. The gas-fired reverberatory furnaces fur-naces have a temperature of from 2.200 to 2.S00 degrees Farenheit. As the charge melts the copper, iron and sulphur combine to form a heavy liquid which settles to the bottc- vVrle the gnngue waste material Inns a sb? which floats on top. The slag is drawn off and poured into cone-like cars and transported to the copper slag dump. The copper-iron-sulphur product is a molten metal which is called copper matte. The copper matte is then sent to converters for the final smelting process. All copper matte, as well as lead matte from the lead blast furnace, is treated in these converters. The lead fume produced in the converter con-verter operation passes to a bag-house bag-house where it is all recovered. The copper slag is skimmed off the converters into 7-ton ladels and poured back hot to the reverberatory reverbera-tory furnaces. Blister copper is cast into 350 pound bars by a casting cast-ing crane. The blister copper is shipped to the Raritan Copper Works at Perth Amboy, New Jersey, for refining. These articles have served to indicate in-dicate the important bearing that Tooele has 'n the des'inv of Utah. The community wiii continue to be an important factor in the welfare of Utah, provided the cooperation of every individual is given toward the end that healthy industrial conditions con-ditions make for healthy economic conditions and for the betterment of individuals generally. (This completes com-pletes the series of articles titled "The Story of Tooele".) |