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首页> 外文会议>Symposium on Sulfide Smelting 2002, Feb 17-21, 2002, Seattle, Washington >OPERATIONAL AND MAINTENANCE EXPERIENCE FROM THE FIRST FULL SCALE KUMERA STEAM DRYER
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OPERATIONAL AND MAINTENANCE EXPERIENCE FROM THE FIRST FULL SCALE KUMERA STEAM DRYER

机译：第一台全尺寸KUMERA蒸汽干燥机的操作和维护经验

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摘要

Drying is a unit process that has numerous applications in metallurgical process industry. Kumera Technology Center is a worldwide equipment and process supplier, who has expertise on both direct and indirect drying. In a conventional direct heated dryer, the required energy is obtained from combustion of fossil fuels emitting a considerable amount of off-gases. However, thermal energy can be already available in some metallurgical plants such as modern copper smelters where steam is produced by waste heat boilers of flash smelting furnaces. The total volume of off-gases, and especially the amount of harmful gases, released into atmosphere can be remarkably reduced when using steam as an indirect energy source for drying. Kumera Technology Center has developed a new type of steam dryer for drying of, for example, abrasive copper concentrate with silica sand. In the development of the new dryer, Kumera's approach has been to combine the best properties of both the existing steam dryers and the rotating drum dryers. In the design, special attention has been paid to overcoming the reported problems of excessive wear and clogging of steam tubes and to reducing the required maintenance operations. The Kumera Steam Dryer, having a patented flexible steam tube arrangement inside the rotating shell, has a high effective heating area ― drum volume ratio without leading to problems with build-up and clogging. It can also be easily scaled up so that a single dryer can dry all of the feed for a large flash furnace. In this paper, we will present the operational and maintenance experiences from two years operation of the first full-scale Kumera Steam Dryer at Norddeutsche Affinerie Aktiengesellschaft in Hamburg, Germany. We will also provide an overview of the future developments with respect to construction and scale up as a response to market demands.
机译：干燥是一种单位工艺，在冶金过程工业中有许多应用。库迈拉技术中心是一家全球性的设备和工艺供应商，在直接和间接干燥方面拥有专业知识。在常规的直接加热干燥器中，所需的能量是从燃烧大量废气的化石燃料燃烧中获得的。但是，热能已经在某些冶金厂中可用，例如现代的铜冶炼厂，那里的蒸汽由闪速熔炼炉的余热锅炉产生。当使用蒸汽作为间接能源进行干燥时，可以显着减少释放到大气中的废气总量，尤其是有害气体的量。 Kumera技术中心开发了一种新型的蒸汽干燥机，用于干燥例如铜砂磨料和硅砂。在开发新的干燥机时，Kumera的方法一直是结合现有蒸汽干燥机和转鼓式干燥机的最佳性能。在设计中，已经特别注意克服蒸汽管过度磨损和堵塞的报告问题，并减少了所需的维护操作。 Kumera蒸汽干燥机在旋转外壳内具有获得专利的柔性蒸汽管布置，具有较高的有效加热面积-鼓容积比，而不会导致积垢和堵塞问题。它也可以轻松按比例放大，这样一台干燥机就可以干燥大型闪蒸炉的所有进料。在本文中，我们将介绍在德国汉堡的Norddeutsche Affinerie Aktiengesellschaft的第一台全尺寸Kumera蒸汽干燥机两年的运行和维护经验。我们还将概述建设方面的未来发展，并根据市场需求扩大规模。

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