New refractories for lining the troughs of blast furnaces

Experiences with the introduction of new cast refractory linings for troughs of blast furnaces at the Nizhniy Tagil combine are described. Lining life was short (15,000 tons of pig iron) when tamped carbon-base refractories were previously used. The life of troughs made with refractories from the Au...

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Bibliographic Details
Published in:Metallurgist (New York) 2001-01, Vol.44 (5-6), p.261-263
Main Authors: Visloguzova, E A, Filippov, V V, Dyankova, L V, Ustenko, A S
Format: Article
Language:English
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Summary:Experiences with the introduction of new cast refractory linings for troughs of blast furnaces at the Nizhniy Tagil combine are described. Lining life was short (15,000 tons of pig iron) when tamped carbon-base refractories were previously used. The life of troughs made with refractories from the Austrian firm Plibur has been approx150,000 tons of pig iron (unit consumption of 0.71 kg /ton), while trough life achieved with refractories from other suppliers were unsatisfactory due to the deviations from prescribed procedures that were necessary especially during winter. However, the Plibur refractories turned out to be susceptible to cracking and less resistant to high temperatures. New refractory compositions designed at the combine resulted in a unit refractory consumption of 0.62-0.70 kg/ton. A progressive method of lining the troughs involving pouring concrete and subjecting it to vibrational compaction, widely used abroad, substantially reduced material and labor costs. Also, a monolithic concrete lining composed of refractories made by the firm Dinur has proven to be superior to previous linings.
ISSN:0026-0894