Shredder dust recycling with direct melting process
Shredder dust recycling with direct melting process
复制标题
直接熔化工艺粉碎机粉尘回收
DOI：
10.2355/isijinternational.40.252
复制
发表时间：
2000
期刊：
影响因子：
--
通讯作者：
M. Naito
中科院分区：
文献类型：
--
作者：
H. Shibaike;M. Osada;Kenji Takamiya;M. Naito
粉碎机的粉尘含有大量的不燃物质和一些有毒成分。因此，传统的焚烧技术很难实现粉尘的减量化和无害化处理。为解决这一问题，作者提出了用焦床式竖炉直接熔炼法处理粉碎机粉尘的方法。用该工艺处理城市固体废物(MSW)已在许多商业工厂被证明是有效的。本研究比较了粉碎机粉尘和城市生活垃圾粉尘的特性。在直接熔炼实验装置上进行了粉碎机粉尘的熔融处理试验。结果表明，采用多级爆破的直接熔融技术，高效稳定地治理了粉碎机粉尘。废气中二恶英含量低于0.1 ng-TEQ/Nm3，采用常规污染控制技术进行净化。粉碎机粉尘产生的炉渣和金属与生活垃圾产生的炉渣和金属一样可以重复利用，直接熔炼技术的应用显着地实现了废物的减容。
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 has 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 stably treated by using the direct melting technology which utilized a multi-stage blasting. Also the content of dioxins in the exhaust gas was below 0.1 ng-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.