The causes of the impairment in the durability of the converter lining at the Azovstal’Integrated Iron and Steel Works were identified. In April–June 1997, commercial-scale tests were carried out on periclase–carbon refractories of grades LIUBX-15 and LIUBXZ-710 used in the working lining of a converter. The lining withstood 1025 heats. From the beginning of 1997, the average durability of the converter lining fabricated from commercial unburned periclase—limestone refractories of grade PIBS-50 was 475 heats. The improvement in durability was due to the use of periclase—carbon refractories containing 10 to 20% carbon. The nominal service life of grade LIUBX-15 and LIUBXZ-710 periclase—carbon refractories under the conditions obtaining at the converter plant of the Azovstal' Integrated Iron and Steel Works is 1200 to 1300 heats. With the documented durability of 1025 heats, the use of periclase—carbon refractories in the working lining of the converter thus cuts the cost of the lining by as much as US $0.3 per metric ton of converter steel.
Refractories and Industrial Ceramics – Springer Journals
Published: Nov 26, 2007
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