SILICA REFRACTORY Russian patent published in 2007 - IPC C04B35/14 

FIELD: coke industry; refractory brick industry; production of enrichment and separation of the isotopes of selenium.

SUBSTANCE: the invention presents the silica refractory, which is intended for relining of the coke furnaces. The silica refractory is produced from the mass including (in mass %): 20-50 of the mixture of the joint grinding of the quartzite and the chalkstone in the ratio (in mass %): 95-96 and 4-5 accordingly, the industrial lignosulfonate (the dry residue) - 0.4-0.8, the silica refractory cullet of the fraction of 5-0 mm - the rest. In the capacity of the silica refractory cullet may be used the ground roasting product of the joint ground of the quartzite with the porosity of 5-12 % and the chalkstone taken in the following ratio (in mass %): 95-96 and 4-5 accordingly. The technical result of the invention is the increased volumetric stability of the silica refractory, the decreased its volumetric mass and the improved refractory property.

EFFECT: the invention ensures the increased volumetric stability of the silica refractory, the decreased its volumetric mass and the improved refractory property.

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