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By Tao Jiang, Jiann-Yang Hwang, Patrick Masset, Onuralp Yucel, Rafael Padilla, Guifeng Zhou

Proceedings of a symposium subsidized through the Pyrometallurgy Committee and the strength Committee of the Extraction and Processing department of TMS (The Minerals, Metals & fabrics Society)

Held in the course of the TMS 2012 Annual assembly & Exhibition Orlando, Florida, USA
March 11-15, 2012

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2. De Nevers, N. (2000). Air pollution control engineering. Boston, McGraw-Hill. 3. Zeldovich, J. B. (1946). "Oxydation of Nitrogen in Combustion and Explotion", Comptes Rendus (Doklady) de L'Académie des Sciences de l'URSS LI(3): 217-220 4. , J. K. Tuset, Tveit, H. (1998). Production of High Silicon Alloys, Tapir forlag, Trondheim 5. TESTO. " 40 3rd International Symposium on High-Temperature Metallurgical Processing Edited by: Tao Jiang, Jiann-Yang Hwang, Patrick Masset, Onuralp Yucel, Rafael Padilla, and Guifeng Zhou TMS (The Minerals, Metals & Materials Society), 2012 SLIDE GATE SYSTEMS FOR COPPER TAPPING Klaus Gamweger1 toi AG, Magnesitstrasse 2, 8700 Leoben, Austria Keywords: Copper Tapping, Slide Gate, Anode Furnace, Rotary Holding Furnace Abstract This paper introduces an innovative solution to open and close the tap hole of different furnace types in the copper industry with a slide gate system.

However, a large accretion is build in the launder. Because the batch wise work, this accretion causes a lot of copper return and damage to the launder when removing it. Because the slide gate allows to start casting with the casting hole at its lowest point, this build-up in the launder are avoided. The slide gate also eliminates almost completely the splashing and the cleaning is minimal. Before, more than 120 MT of copper had to be removedfromthe surroundings and re-melted. Because always casting from the lowest point in the anode furnace, no slag is entrained in the anodes.

Thus the wear of the inner nozzle is significantly reduced and a life time of more than six weeks was obtained. The plates show a lifetime of up to 16 heats and the well block hasn't to be changed during the two years life time of the anode furnace. Only small gunning repairs were necessary. Summary of Benefits • Improved safety for operators due to remote controlled opening and closing procedure. • Accurate controlled and steady flow and reduced maintenance for furnace drive. Only one small part has to be moved, not the entire furnace.

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