Structural Changes in Binder During Oxidation of Periclase-Carbon Refractories

Ikonnikov, K. I.; Kondrukevich, A. A.; S’emshchikov, N. S.; Belyakov, A. V.; Kostochka, M. L.

doi:10.1007/s11148-016-9989-3

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“…However, a total release of the individual MgO particles from the aggregates does not occur. As Ikonnikov mentions in his work [18], excluding the carbon bond does not guarantee the disintegration of the agglomerates as the present impurities can act as a binder of grains of the periclase, too. The multicomponent admixtures contribute to the strength of the decarbonised agglomerates.…”

Section: Discussionmentioning

confidence: 95%

SPECIFICATION OF MgO-CONCENTRATE OBTAINED FROM POST MORTEM MgO-C REFRACTORY MATERIALS

Plešingerová¹

2018

Ceramics - Silikaty

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The recycling process of post mortem MgO-C (MC) materials is based on carbon removal from the crushed material. The laboratory results of the annealing of the crushed post-mortem MC bricks in a static layer, in an air atmosphere in an electric furnace are presented. The quantity and quality of the fractions size was evaluated before and after annealing. The results show that the carbon inside the grains of size 6.3-15 mm is incompletely burnt out under the given conditions. The results from annealing of the fractions size below 6.3 mm confirmed that the carbon burning out decreases the strength and density of the agglomerates, which then partially disintegrate during annealing. A mechanical load is needed for the complete disintegration of the brittle agglomerates. In addition, the results of the MgO-fractions quality evaluation are discussed, which were obtained by annealing the grit from the post-mortem MC bricks from the pilot-plant experiment in a rotary kiln in the factory Hačava, from the company INTOCAST Slovakia a.s.. The obtained fraction size of MgO possesses a suitable chemical and phase composition. However, the strength of the MgO-grains core was lower. This confirms that the post-mortem MC materials may be recycled; however, it requires waste management and the related technical equipment for the recycling processes.

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Section: Discussionmentioning

confidence: 95%

SPECIFICATION OF MgO-CONCENTRATE OBTAINED FROM POST MORTEM MgO-C REFRACTORY MATERIALS

Plešingerová¹

2018

Ceramics - Silikaty

View full text Add to dashboard Cite

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Structural Changes in Binder During Oxidation of Periclase-Carbon Refractories

Cited by 1 publication

References 0 publications

SPECIFICATION OF MgO-CONCENTRATE OBTAINED FROM POST MORTEM MgO-C REFRACTORY MATERIALS

SPECIFICATION OF MgO-CONCENTRATE OBTAINED FROM POST MORTEM MgO-C REFRACTORY MATERIALS

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