生物质替代传统燃料用于铁矿粉烧结试验研究

Experimental Study on Sintering of Iron Ore Powder with Biomass Instead of Conventional Fuel

采用电炉制备焦炭、果壳炭以及煤粉-果壳复合炭,并对焦炭、果壳炭以及煤粉-果壳复合炭分别进行烧结杯试验,结果表明:煤粉-果壳复合炭替代焦炭比例直接影响烧结性能;煤粉-果壳复合炭水饱和度高,制粒时加水量大,且着火点低,燃烧时达到的最高温度低;全煤粉-果壳复合炭烧结,与焦炭相比,烧结矿产质量指标变化不明显,但SO_2与NO_x排放减少,可实现洁净化生产,在保证烧结产品质量的前提下,可降低燃耗成本约25元/t。

The preparation of coke furnace, pulverized coal and carbon shell-shall carbon composite, and the coke, coal and carbon shell - shell carbon composite were tested for sintering. The results showed that： Coal-shell composite carbon instead of coke ratio directly affects the sintering properties of pulverized. Coal-shell carbon composite with high water saturation, granulation a large amount of water, and the fire point is lower. The highest temperature can be reduced for the combustion of pulverized coal. It did not change significantly that all- shell composite carbon sintering compared to coke and sinter quality index, but the SO~ and NOx emissions is decreased which can realize clean production.