- 期刊
以鋼鐵廠固雜料生產冷固球團之資源化技術開發與應用
Resourceful Technology of Steelworks Revert Materials by Cold Bond Pellet
摘要
避免將高氯含量之固雜料由燒結製程回收是降低鋼廠戴奧辛排放最直接之方法。本報告描述以固雜料搭配水泥生產冷固球團（CBP）供高爐使用之技術開發。試驗結果顯示將高爐灰（BF Flue Dust）與燒結場靜電集塵灰（EP Dust）依產出比例4：1混拌並添加15%水泥為黏結劑，經研磨後造粒，再經養生48hrs後，其CBP強度可達50kgf／piece並符合高爐用料需求。以目前使用之混拌固雜料（Y-Mix）製作CBP，因含有油份或沉澱用之皂土無法使水泥硬化後達到強度要求。最終整合試驗結果與日本冷固球生產技術，規劃出適合中鋼採行的冷固球生產製程。此工程案已於95年7月展開，預計96年底開始運轉。預估其無形效益為可降低燒結場戴奧辛排放當量至0.5-1.0ng I-TEQ／Nm^3，此外回收固雜料之有形效益可達每年新台幣40*10^6元。
並列摘要
Steelworks revert materials had been identified as the major contributors of sinter plant dioxins emissions. This paper describes the development of Cold Bond Pellet (CBP) for blast furnace burden in China Steel Corporation (CSC). Experimental results showed mixing of BF Dust, EP Dust (by 4:1) and cement (by 15% as binder) as raw materials, and processed by grinding and pelletizing, the CBP strength was able to reach 50 kgf/piece after aging for 48 hrs. Currently, the used revert mixture (Y-mix) contained some oil, and could not reach the required strength. Eventually, the experimental results and Japanese CBP technology were integrated to an adaptable process for CSC This project has been put into action since July 2006, and will start to operate before the end of 2007. The intangible advantage is to reduce the dioxin toxicity to 0.5-1.0ng I-TEQ/Nm^3, the tangible advantage is to cerate the profit of NT:40*10^6/year by recovering these revert material.