There are about 180 to 220 thousand tones of hazardous electric arc furnace (EAF) dust generated by EAF steel smelting plant every year in Taiwan. The shortage of recycling treatment capacities led to a huge storage quantity of EAF dust of more than 500,000 tons. With the assistance from the Taiwan Environmental Protection Administration (EPA) and the Industrial Development Bureau (IDB), 4 treatment facilities in 3 factories have been established in Taiwan with a total treatment capacity of 274 thousand tons which exceed the annual production amount. The stored dross and dusts were treated gradually but the stored EAF dust quantity still couldn’t be treated completely by June 30 2014. In addition, the problems of product production and selling still need to be reinforced. This project has implemented on-site auditing of 18 steel plants, 2 EAF dust recycling treatment plants, 11 EAF slag recycling treatment plants; examined 13 applications for extending the EAF dust storage period in order to urge the EAF steel-smelting dust and other industrial waste generators to follow the Waste Disposal Act and other relevant laws and regulations. 14 dust and slag samples produced by recycling process and recycled slag pellets were analyzed to clarify the material properties. After on-site investigation, this project has found that the EAF dust and slag were stored, cleaned-up and treated properly, but the stored EAF dust quantity still couldn’t meet the annual treatment goal and complete the whole treatment before June 30 2014. Regarding the problem of couldn’t complete the entire treatment mount of the EAF dust, this project has already proposed measures to accelerate the treatment task and resolve the problems of proper storage of steel-smelting slag. In addition, through investigation of the treatment and recycling techniques and facilities of aluminum dross and dusts, this project has completed economical benefit analysis of recycling products. In addition, the project eight aluminum smelting factories, 6 aluminum dross treatment / recycling / final disposal facilities and one company using aluminum dross recycling products, urging the aluminum smelting industry to report the production of aluminum dross honestly, and to store, treat and recycle aluminum ballast properly. At the same time, the project completed the analysis of aluminum dross treatment/recycling technology, the investigation of domestic processing and recycling facilities and analysis of the economic benefits of recycling products. The project also proposed feasible countermeasures to accelerate the treatment task and resolve the problems of cleanup of steel-smelting slag.

Electric Arc Furnace;Steel-Smelting;Electric Arc Furnace Dust;Electric Arc Furnace Slag;Aluminum-Smelting;Aluminum Dross;Audit Management