The Application of Cold Banding Technology for Dust Removed From BOF Gas Using Dry Dedusting Technology

Firstly, physical and chemical properties of dust removed from BOF gas are analyzed, and then the cold banding technology of dust removed from BOF gas and its application are introduced. Tests have proved that using cooled agglomerated pellets made of the dust removed from BOF gas and small amounts of modified starch as a coolant and slagging agent in steel production can bring about considerable economic, social and environmental benefits.

水泥窑协同处置城市干化污泥技术及其工程化应用

广州越堡水泥协同处置城市干化污泥项目采用“污水处理厂内干化+水泥窑协同处置”技术路线,市政污泥经污水处理厂深度脱水+电热干化后,污泥最终含水率降至40%以下;干化污泥再经协同处置系统卸料、输送、破碎、喂料、除尘除臭,处置城市干化污泥量达600t/d,折算处置含水湿污泥约1 800t/d,技术优势明显。污泥处置系统运行以来,二噁英排放量为0.037ng TEQ/m~3,远低于国家标准排放限值0.1ng TEQ/m~3;年节煤约4.4万吨,节煤收益>3 750万元,按照吨烟煤排放CO_(2) 2.0t估算,年可减排CO_(2)约8.8万吨。