Abstract:

The small scale test, medium scale test and industrial experiment on the improvement of coke hot property result are done by adding passivating agent based on SiO2. The study result shows that coke quenching with direct spraying of 5‰ water solution of the passivating agent based on SiO2 has a good improvement function of CSR and has very small influence on the coke cold strength M40. The addition of the powder of passivating agent based on SiO2 into coal blend reduces the coke hot property greatly and plays a negative role. The addition of the water solution of the passivating agent after normal coke quenching has almost no improvement result.