223 Practical application of Twin-roll type slag indirect cooling equipment

Akashi, Tetsuo; Doi, Shigeyuki; Kikuchi, Toru; Suzuki, N.; Saruta, Masahiko; Teramoto, Toyokazu

doi:10.1299/jsmeenv.2006.16.214

Cited by 2 publications

(2 citation statements)

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“…Although practical application of the twin roll slag solidification process has not been achieved with blast furnace slag, 17,18) the process has been used practically as a cooling solidification technology for the molten slag residue of municipal waste incineration. 19,20) Although this twin roll method has a record of use with low basicity slags such as the blast furnace slag and municipal waste molten slag, it has not been applied to high basicity steelmaking slag.…”

Section: Introductionmentioning

confidence: 99%

Development of Continuous Steelmaking Slag Solidification Process Suitable for Sensible Heat Recovery

Tobo¹,

Ta²,

Kuwayama³

et al. 2015

ISIJ Int.

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The COURSE50 project aims at developing technologies to reduce CO2 emissions from steel works by approximately 30% in Japan. In order to supply the energy required to separate CO2, a technology for recovering sensible heat from steelmaking slag is being developed as one theme of COURSE50. A twin roll type continuous slag solidification process to obtain a shape suitable for sensible heat recovery was investigated.Sheet-like slag was shaped to a thickness of about 7 mm in a twin roll pilot-scale experiment. The slag thickness depended on the adhesion of the molten slag rather than the thickness of the solidified slag on the roll. The slag condition suitable for the twin roll method was identified as a liquid phase ratio of 60% or more. Based on a laboratory-scale experiment and heat transfer calculations, a combination process using the twin roll method and a countercurrent flow packed bed is expected to achieve a heat recovery ratio of 30% or more from sheet-like slag.

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Section: Introductionmentioning

confidence: 99%

Development of Continuous Steelmaking Slag Solidification Process Suitable for Sensible Heat Recovery

Tobo¹,

Ta²,

Kuwayama³

et al. 2015

ISIJ Int.

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show abstract

“…A comparable pilot facility has been developed from JFE. It consists also of twin drum rollers (rotating away from each other) indirectly cooled with a coolant flowing inside the drums, but the drums are made of copper and the molten slag is transferred outwards of the drums (Akashi et al 2008). In addition, JFE investigated in the laboratory a combination of a cooling drum and conveyor with a heat recovery ratio of more than 30% (Ta et al 2012).…”

Section: Former Developments For Steel Slagsmentioning

confidence: 99%

Dry solidification with heat recovery of ferrous slag

Motz

Ehrenberg

Mudersbach

2015

Mineral Processing and Extractive Metallurgy

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Iron and steel slag (ferrous slags) are a potential heat/energy source. The currently wasted heat of liquid slag during solidification in the range between more than 1600 and 1000uC should be used to generate hot air, steam or electricity. The main challenge is to solidify the liquid ferrous slag to achieve a good quality product while recovering the heat. The authors describe both the historical failures and the latest research efforts of the FEhS-Institute to recover heat from blast furnace (BF) slag as well as from steel slags.

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223 Practical application of Twin-roll type slag indirect cooling equipment

Cited by 2 publications

References 0 publications

Development of Continuous Steelmaking Slag Solidification Process Suitable for Sensible Heat Recovery

Development of Continuous Steelmaking Slag Solidification Process Suitable for Sensible Heat Recovery

Dry solidification with heat recovery of ferrous slag

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