Performance evaluation of acid mist reduction techniques in copper electrowinning

Al Shakarji, Reza, He, Yinghe, and Gregory, Simon (2013) Performance evaluation of acid mist reduction techniques in copper electrowinning. Hydrometallurgy, 131-132. pp. 76-80.

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The effectiveness of various acid mist suppression techniques has been analysed in the present work. The two important factors that influenced the performance of a floating barrier were its coverage of the solution's surface area and its height above the solution line. When comparing single layered floating barriers, spheres reduced acid mist the most due to their higher buoyancy and higher coverage of the solution surface. In general, barriers made of high density polyethylene were 3.4% more effective in reducing acid mist than those made of polypropylene due to their lower density which enabled them to be more buoyant in the solution and intercept acid mist more effectively.

Acid mist was reduced noticeably with the addition of FC-1100 (a chemical reagent widely used to suppress acid mist) to the solution up to 30 ppm. Further addition of FC-1100 made much less difference in the suppression of acid mist. When FC-1100 was used in combination with floating barriers (such as spheres), the reduction in acid mist improved by an average of 29% in comparison to the use of FC-1100 alone.

Item ID: 29884
Item Type: Article (Research - C1)
ISSN: 1879-1158
Keywords: acid mist; copper electrowinning; floating barriers; FC-1100; current density
Date Deposited: 24 Oct 2013 05:45
FoR Codes: 09 ENGINEERING > 0904 Chemical Engineering > 090403 Chemical Engineering Design @ 100%
SEO Codes: 86 MANUFACTURING > 8611 Basic Metal Products (incl. Smelting, Rolling, Drawing and Extruding) > 861102 Basic Copper Products @ 100%
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