A METHOD FOR TREATMENT OF BLAST-FURNACE COKE

摘要

To improve quality parameters of coke 2 - 20 % aqueous solution of a pentaborate of sodium, potassium or calcium,, is sprayed onto the coke lumps at the temperature of no less than 20° C. 0.1 - 0.2 % of nonionic surfactant, preferably in the form of mono- and /or dialkyl ethers of polyethylene glycol, is added to the aqueous solution of the borate in a volume sufficient to obtain the amount of surfactant in the coke corresponding to 0.0035 - 0.0070 % (mas.) of coke mass. The solution of pentaborate of sodium, potasium or calcium is used in a volume corresponding to the percentage in the range from 0.09 to 0.68 % (mas.) of dry pentaborate in the coke mass. Technical result: ensuring of improvement of quality parameters CSR and CRI of coke. In comparison with the closest priort art method, it was successfully obtained that coke strength after its reaction with C02 (CSR) is increased by 9.3 - 16.5 % ( relative) and reactivity index CRI is decreased by 12.3 - 21.2 % ( relative).