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Shredder Dust Recycling with Direct Melting Process

机译：采用直接熔融工艺的切碎机粉尘回收

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摘要

The shredder dust contains a large amount of incombustibles and some toxic ingredients. Therefore, the shredder dust is very difficult to be reduced in its volume and made harmless in the treatment by using the conventional incineration technology. In order to solve this problem, the authors suggested the method to treat the shredder dust by the direct melting process of the coke-bed type shaft furnace. The treatment of municipal solid waste (MSW) by the process ahs been proven to be effective in many commercial plants. In this study, the characteristics of the shredder dust compared with those of MSW were investigated. Some experiments on melting treatment of the shredder dust were carried out at the direct melting experimental plant. As a result, the shredder dust was efficiently and stable treated by using the direct melting technology which utilized a multi-stage blasting. Also the content of dioxins in the exhaust gas was below 0.1ng/TEQ/Nm~3 and the gas was purified with the conventional pollution control technology. The slag and metal produced from the shredder dust were reusable in the same way as those from MSW and the volume reduction of the waste was remarkably realized by the application of the direct melting technology.
机译：切碎机粉尘包含大量不燃物和一些有毒成分。因此，通过使用常规的焚烧技术很难将切碎的粉尘减小其体积并使之在处理中无害。为了解决这个问题，作者提出了通过焦床式竖炉的直接熔化工艺处理切碎机粉尘的方法。已经证明，通过该方法处理城市固体废物（MSW）在许多商业工厂中是有效的。在这项研究中，研究了与城市固体垃圾相比，碎纸机灰尘的特征。在直接熔化的实验工厂进行了一些粉碎机粉尘熔化处理的实验。结果，通过使用利用多阶段喷射的直接熔融技术，有效且稳定地处理了切碎机粉尘。废气中二恶英的含量也低于0.1ng / TEQ / Nm〜3，并采用常规的污染控制技术进行净化。粉碎粉尘产生的炉渣和金属可以与城市固体废弃物产生的废渣和金属以相同的方式重复使用，并且通过直接熔化技术的应用，废物的体积显着减少。

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