Refractories and Industrial Ceramics Vol. 49, No. 5, 2008 INVENTIONS Survey prepared by Zh. N. Demidova Translated from Novye Ogneupory, No. 8, pp. 64 – 67, August 2008. MULLITE-CORUNDUM REFRACTORY content of 14 – 16% containing up to 7% of particles with a size of more 63 m it is stabilized for 7 – 20 h in order to ob- V. I. Khabarova, E. M. Grishkun, and A. M. Gorokhovskii tain a highly concentrated ceramic binder suspension Patent RU 2303019 (HCBS), and it is mixed with a suspension of the composi- IPC C04B 35/10 tion, wt. fraction: refractory bentonite clay 1, water 1 with an amount of 0.2 – 0.7% clay of the HCBS weight, i.e. for Mullite-corundum refractory prepared from mixes, in- 50 – 70 min, then it is stirred with trisodium phosphate or cluding corundum, clay, orthophosphoric acid and an addi- tripolyphosphate in an amount of 0.2 – 0.7% of the HCBS tive distinguished by the fact that the addition to the mix con- weight. tains a barium oxide concentrate with a barium sulphate con- tent of not less that 85 wt.% with the following ratio of com- Bulletin, No. 21, 304 (2007). ponents, wt.%: barium oxide
Refractories and Industrial Ceramics – Springer Journals
Published: Feb 26, 2009
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