Abstract：The size distribution of coke breeze plays an important role in achieving proper sintering process. Therefore, the effects of size distribution of coke breeze on sinter indices were investigated by means of sintering pot test. Experimental results showed that when the size range of coke breeze used in the sinter pot test increased from "＜1 mm" to "5- 8 mm", almost all of the sintering indices became worse, including tumble strength, productivity, fuel consumption, production yield, sintering rate, and size composition. The size distribution of coke breeze should be adjusted according to the different production strategies. Aimed at sintering with the maximum tumble strength, the size distribution of coke breeze should be 57.20% of "＜1 mm", 25.63% of 1- 3 mm, 11.17% of 3- 5 mm, and 6.00% of 5- 8 mm. When the size distribution of coke breeze was adjusted from the actual used to the optimum, the ore sintering process became reasonable. At the same time, the tumble strength of the sinter was increased 1.48%, the production yield was increased 1.73%, the percentage of size composition between 10 to 40 mm was increased 2.16%, the fuel consumption was decreased 0.69 kg/t and the metallurgical property was improved. The results could provide a scientific guideline on reasonably utilization of fuel resource in actual sinter process.
2018, Vol. 28 
