铁精矿采用硅酸钠做粘结剂,压力成型的冷固结球团矿在小于300℃条件下养生20min,冷球抗压强度平均达到200kg/个球。经13m~3高炉取代土烧结矿和部分原矿进行冶炼试验,料柱透气性良好,煤气化学能的利用有所改善,炉况顺行,冶强提高、焦比降低,证实其冶金性能完全可以满足高炉冶炼要求。 Iron concentrate using sodium silicate as a binder, cold forming pressure-forming pellets in less than 300 ℃ under the conditions of health 20min, the average compressive strength of cold-rolled balls up to 200kg / a ball. 13m ~ 3 blast furnace to replace soil sinter and part of the ore smelting test, column gas permeability is good, the use of gas chemical energy has improved, the furnace conditions, the rule of strength increased, the coke ratio decreased, confirmed its metallurgical properties fully meet the blast furnace Smelting requirements.