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15.07.14

New refractories of Magnezit Group for glass industry

Magnezit Group widened the range of refractory products with the new grades of bricks for glass-making industry. At the Satka production site (Satka, Chelyabinsk region, Russian Federation) the company has manufactured the first pilot batch of bricks of MZ-84 grade for lining walls and regenerator checker of glass-melting furnaces.

Scientific studies of specialists of Center for Engineering Developments were finished with creation of a new technology for production of four novel grades of refractories. Work for launching of one of this technologies — technology for production of bricks of MZ-84 grade — was started by the specialists of the workshop for production of magnesia bricks of Kombinat Magnezit (Satka, Chelyabinsk region, Russian Federation). The first pilot batches of refractories of MZ-84 grade were shipped to consumers.

«The newly developed refractories are characterized by high strength rates, surpassing 100 N/mm2, and low open porosity of 10–14%. These properties in combination with high thermophysical characteristics provide them with considerable advantages in service, -commented on technical director of Magnezit Group Lev Axelrod. — In the course of development the refractories were tested for glass attack resistance at material science laboratory. During this testing the novel refractories were compared with the batch bricks. This allowed to evaluate the ability of the new refractory to withstand destructive action of aggressive components during service».

Test results showed that novel products can compete not only with traditionally applied in glass-melting furnaces periclase bricks, but also with expensive high-purity periclase- zirconia bricks. The thing is that composition of the refractories was developed mainly on the basis of clinker of our own production. It is manufactured in the shaft kiln «Maerz». It allowed to considerably reduce the share of expensive purchased materials in their composition and to improve the «price -quality» ratio during production of the novel bricks».

In the nearest plans of Magnezit Group there is an introduction of new grades of products for glass-melting industry into mass production and further scientific and research work in perspective directions.

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