FIELD: metallurgy.
SUBSTANCE: method for improving qualitative indices of blast-furnace coke is implemented by spraying at temperature of not less than 20°C onto blast-furnace coke lumps of 2-20% water solution of sodium, potassium or calcium pentaborate, which contains 0.1-0.2 wt % of non-ionic surface active substance in the form of mono- and/or dialkyl ethers of polyethylene glycol in the quantity providing the content of surface active substance in coke of 0.0035-0.0070 wt %; at that, content of dry pentaborate of one of the above metals in coke is 0.09-0.68 wt %.
EFFECT: improving qualitative indices of blast-furnace coke owing to decreasing reactivity index and increasing its strength value.
1 cl, 25 ex, 2 tbl
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| METHOD FOR CHANGING THE PROPERTIES OF COAL CONCENTRATES | 2021 |
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RU2782029C1 |
| METHOD OF BLAST-FURNACE MELTING | 2008 |
|
RU2359041C1 |
