FIELD: chemistry.
SUBSTANCE: invention relates to fireproof industry, namely to obtaining plastic fireproof mass for temporary closing of tuyer openings of blast furnaces when replacing blowing tuyers. Plastic fireproof mass contains following components, wt %: mixture of novolacquer and resol-type phenol resin with ethylene glycol 7.0-8.0, fireproof clay 8.0-15.0, SAS (sodium alkylbenzosulphonate) 1.0-1.5, plasticiser 3.0-5.0, silica filler - the remaining part.
EFFECT: obtaining of mass, which has increased plasticity, small shrinkage in work and long service life, secures easy unseaning of tuyer opening when replacing blowing tuyer.
2 tbl
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|
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