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KAWASAKI STEEL TECHNICAL REPORT
No.15 ( October 1986 )

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Development of Dusting Prevention Stabilizer for Stainless Steel Slag

Akira Seki, Yoshio Aso, Makoto Okubo, Fumio Sudo, Kunihiko Ishizaka
Synopsis :
Stainless steel slag with a basicity of over 1.5 pulverized into fine particles during cooling in the past. Such pulverization was liable to cause environmental problems and disturbed further utilization of slag. To solve such problems, a stabilizing agent has been developed which can prevent pulverization of the slag with only 0.5% addition. Borate is used as a stabilizer, and the content of its crystal water is adjusted to obtain more homogeneous diffusion and resolution in molten slag. Best result is achieved for K-BOP slag at 7% crystal water content, and the stabilized stainless steel slag after 3 months aging period becomes equivalent to blast furnace slag in its quality, thereby making it applicable to aggregate for road construction.
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