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神户钢铁厂最近实现了SiO_2含量由5.6%下降到4.9%的烧结矿生产技术。神户3号高炉使用这种低SiO_2烧结矿后,由于高炉底部透气性的改善,使整个透气性得到全面提高,明显地促进了矿焦比和喷焦比的提高。一、低SiO_2烧结矿的生产 1.烧结杯生产SiO_2烧结矿的试验该厂对低SiO_2烧结矿进行了烧结杯试验。试验时,将原料的水份调节在6.0%,放在直径330毫米、高550毫米、负压1600毫米水柱的烧结杯里进行烧结,并按第1阶段至第2阶段的顺序,依次增加低SiO_2和低A1_2O_3矿石配入量,用以达到高碱度的目的;但在
Kobe Steel has recently realized a sinter production technology that reduces the SiO 2 content from 5.6% to 4.9%. The use of this low SiO 2 sinter at Kobe No.3 blast furnace improves the overall air permeability due to the improved air permeability at the bottom of the blast furnace, and obviously improves the coke-to-coal ratio and the fuel injection ratio. First, the production of low SiO_2 sinter 1. Sintering cup production of SiO_2 sinter test The plant on the low-SiO_2 sintered sinter cup experiment. During the test, the raw material water was adjusted to 6.0% and sintered in a sintering cup 330 mm in diameter, 550 mm in height, and a negative pressure of 1600 mmHg, and then increased in order from stage 1 to stage 2 SiO_2 and low A1_2O_3 ore loading, to achieve the purpose of high alkalinity;