| Budget Amount *help |
¥45,890,000 (Direct Cost: ¥35,300,000、Indirect Cost: ¥10,590,000)
Fiscal Year 2015: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Fiscal Year 2014: ¥13,130,000 (Direct Cost: ¥10,100,000、Indirect Cost: ¥3,030,000)
Fiscal Year 2013: ¥25,350,000 (Direct Cost: ¥19,500,000、Indirect Cost: ¥5,850,000)
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| Outline of Final Research Achievements |
In this study, the dust generated during normal EAF steelmaking process was returned to the EAF by injection, and the regenerated dust was collected by using a bag filter. The amount and chemical composition of regenerated dust was continuously monitored by the particle sensor which was equiped in the dust collection system of practical EAF factory. The dust injection technology was determined to be very effective in reducing the dust treatment burden by decreasing the quantity and enhancing the quality of the regenerated dust. The regenerated dust was provided to the CaO addition process which was developed by the authors. It was confirmed that the most of zinc in the treated dust was recovered from the regenerated dust. Due to such a very good result, our partner EAF company applied the dust injection technology to their routine steelmaking operation and the total amount of dust generation was successfully reduced significantly.
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