炼焦工艺条件对铁焦性能影响的试验

 在加拿大铁矿粉配比为10%的条件下，系统研究了炼焦工艺条件（堆积密度、升温速度和焖炉时间）对铁焦性能（气孔率、机械强度、热性质和铁矿石还原程度）的影响。结果表明，炼焦工艺条件对铁焦性能的影响显著：堆积密度为1.1 t/m3时，铁焦的性能最佳；升温速度为2.5 ℃/min时，焦炭的机械强度和热性质最佳，而铁矿石还原程度随升温速度的提高而增大；焖炉时间为120～150 min时，铁焦的各种性能均最佳；改变炼焦工艺条件可以得到具有不同性能的铁焦。

Experiment of coking process conditions on iron-coke properties

At the ratio of iron ore powder of 10%，the influences of coking process conditions (bulk density，heating rate，soaking time) on iron-coke properties (porosity，mechanical strength，thermal property and reduction degree of iron ores) were investigated. The results show that，it is prominent for the coking process conditions to affect iron-coke properties: when bulk density of coal charge is 1.1 t/m3，the properties of iron-coke are excellent; when heating rate is 2.5 ℃/min，the mechanical strength and thermal property are optimal and the iron ore reduction degree increases along with increasing of heating rate; when soaking time ranges between 120-150 min，the properties of iron-coke are the best. Adjustment of the coking process conditions can produce the iron-coke with different properties.