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Improvements in the Mercury Abatement and Process Efficiency of Adsorption, Desorption and Regeneration Gold Processing Operations

机译：吸附，解吸和再生金加工过程中汞减排和工艺效率的提高

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摘要

FLSmidth-Summit Valley Technologies has been a leader in gold processing equipment for nearlyrntwo decades. Over the past several years an extensive research and development effort has led tornimprovements in Mercury Abatement systems and process efficiency in Adsorption Desorption andrnRegeneration (ADR) or "Carbon" plant operations. Two technologies will be discussed that arernfocused on efficiency improvements followed by an explanation of Mercury Abatement systems.rnGold and silver can be desorbed from carbon in several ways. FLSmidth has made significantrnimprovements to the Pressure ZADRA process allowing for lower energy consumption and lowerrncapital costs. This patented process is known as the Split-ZADRA Strip method. Split-ZADRA allowsrna plant to elute loaded carbon in a semi-continuous fashion. This increases the grade of the PregnantrnStrip Solution, improves electrowinning efficiency, reduces capital equipment costs, and reducesrnenergy requirements. During desorption and electrowinning for the Pressure ZADRA process, thernpressure and temperature of the circulating strip solution is changed multiple times. A self-containedrnheating and cooling system has been developed which decreases the energy requirements for elution.rnMercury Abatement technology has become increasingly important in recent years. Along withrnFLSmidth Summit Valley Technologies' complete Mercury Retorting Systems, FLS-SVT hasrndeveloped systems for the capture and removal of mercury from electrowinning cell and strip solutionrnexhaust, Carbon Regeneration exhaust, and the dore furnace exhaust.rnThis paper describes each of the technologies introduced above and their success in operational goldrnand silver mines. Case studies will be discussed showing the advantages of each specific technologyrnas it applies to operations around the world.
机译：FLSmidth-Summit Valley Technologies在近二十年来一直是金加工设备的领导者。在过去的几年中，广泛的研究和开发工作导致了汞减排系统的改进以及吸附脱附和再生（ADR）或“碳”工厂运营的过程效率。将讨论两种技术，重点是提高效率，然后解释汞消除系统。金和银可以多种方式从碳中解吸。 FLSmidth对压ZADRA工艺进行了重大改进，从而降低了能耗并降低了资本成本。这种获得专利的方法称为Split-ZADRA Strip方法。 Split-ZADRA阔叶植物以半连续方式洗脱负载的碳。这提高了孕胎带解决方案的等级，提高了电积效率，降低了资本设备成本，并降低了能源需求。在ZADRA压力解吸和电解沉积过程中，循环带材溶液的温度和温度会多次变化。已经开发出一种独立的加热和冷却系统，该系统可以降低洗脱所需的能量。近年来，汞减排技术变得越来越重要。与FLSmidth Summit Valley Technologies完整的汞蒸馏系统一起，FLS-SVT已经开发了用于从电解积碳和带状溶液废气，碳再生废气和炉窑废气中捕集和去除汞的系统。本文介绍了以上介绍的每种技术以及他们在金银矿的运营中取得了成功。将讨论案例研究，以显示适用于全球运营的每种特定技术的优势。

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  • 会议地点 Perth(AU)
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    M Lefler; T Weldon; C Barton; B Randall;

  • 作者单位

    FLSmidth-Summit Valley Technologies, 7158 South FLSmidthDrive, Midvale Ut 84047, USA. Email: Mike.Lefler@FLSmidth.com;

    FLSmidth-Summit Valley Technologies, 7158 South FLSmidth Drive,Midvale Ut 84047< USA. Email: Todd.Weldon@FLSmidth.com;

    FLSmidth-Summit Valley Technologies, 7158 South FLSmidth Drive, Midvale Ut84047, USA. Email: Cameron.Barton@FLSmidth.com;

    FLSmidth-Summit Valley Technologies, 7158 SouthFLSmidth Drive, Midvale Ut 84047, USA. Email: Brent.Randall@FLSmidth.com;

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