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7th World Congress on Recovery, Recycling and Re-integration

作者： gerd arnd kley Rudolf Simon Brenneis Adamczyk Franz-Georg Christian Burkart Adam Peter Kcher Federal Research Institute for Materials Research Richard-Willsttter-StraΒe 11 Berlin D-12489 Germany Federal Research Institute for Materials Research Richard-Willsttter-StraΒe 11 Berlin D-12489 Germany Federal Research Institute for Materials Research Richard-Willsttter-StraΒe 11 Berlin D-12489 Germany Federal Research Institute for Materials Research Richard-Willsttter-StraΒe 11 Berlin D-12489 Germany BAM LinderhofstraΒe 8 Berlin D-12623 Germany

Raw and waste materials can be converted to more valuable products by biological, mechanical, chemical, thermal and thermochemical treatment technologies. Thermochemical separation is one of the most efficient ways to increase the purity of products or/and decrease the environmental impact of waste materials. The methods of thermochemical substance separation currently used at the Federal Institute for Materials Research and Testing (BAM) were initially developed to convert inferior raw materials (e.g bauxites of different origins) into high-temperature and hard materials by removal of impurities. The principle of the treatment is the chemical conversion of unwanted constituents to volatile compounds or to elements and alloys. While the volatile compounds are removed by the exhausting system, the elemental phase is separated from the mineral fraction due to its higher density. The thermochemical separation was carried out predominantly in molten state, but can also occur below the melting point by physical or chemical processes.

关键词： thermochemical separation, recovery, raw and waste materials, heavy metals, ressources, filter dust, slags, sewage sludge, fertilizer, silicate products

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Thermochemical Treatment——Technologies for Recovery and Utilisation of Materials

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过程工程学报 2006年第2期6卷 231-236页

作者： gerd kley Rudolf Brenneis Burkart Adamczyk Franz-Georg Simon Division Waste Treatment and Remedial Eng. Federal Inst. Materials Research and Testing BAM Berlin 12200 Germany

The arc furnace technology is an ideally suited process for the treatment of hazardous and problematic waste. The operation conditions of the furnace can be adapted for optimal transformation of the waste material input into raw materials and usable products. The process can significantly reduce the impact of contaminated wastes and industrial residues, and enable material conversion and separation. Thus, the products of the process have various applications. The capability of the process is illustrated with three examples, the treatment of bottom ash and filter ash from waste incineration plants, of stainless steel slags and of chromium-containing residues from the refractory industry.

关键词：热化学处理原料分离耐火材料不锈钢

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