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介绍一项烧结混合料制粒新技术。它把通过烧结布料前各工序制成的烧结混合料,在不损坏已有颗粒的情况下,按需要将影响烧结料通气性的细料,制成透气性好的烧结颗粒,达到进一步改善烧结混合料透气性和烧结矿技术经济指标的目的。 相似文献
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本文简要地介绍了攀钢烘铁厂烧结松料器的改进方法及改进后的使用效果,对松料器的改进作了具体的描述,并从机理上进行了分析。 相似文献
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昆钢2台130 m2烧结机承担着向2000 m3高炉提供烧结矿的任务。受多种因素影响,烧结矿产量、质量与2000 m3高炉的要求还有一定差距。通过技术改造和新技术应用,使130 m2烧结机的各项技术经济指标有了大幅度提高,取得了较好的效果。 相似文献
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通过对冷钢烧结工艺过程的考察分析,在实验室模拟生产条件对冷钢高印度矿粉烧结规律进行了研究。结果表明:在生产高碱度高MgO烧结矿工艺过程中,降低冷钢烧结印度矿粉的配矿比例,对烧结矿产量和质量的提高有明显效果。为冷钢烧结配矿工艺的优化提供了有力支持。 相似文献
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Powder Metallurgy and Metal Ceramics - Spark plasma sintering (SPS) has been an attractive technique for many researchers seeking to consolidate metals and ceramics. This technique’s high... 相似文献
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Many problems appear in the sintering process of vanadium bearing titanomagnetite, such as high energy consumption and low productivity; sinter quality is also very poor for its low tumble strength and high reduction degradation. Sinter productivity and quality are dominated by bed permeability and mineralogy structure, which are highly influenced by the thermal state of sintering bed, so the sintering process of titanomagnetite is researched by bed dissection in this work. Temperature evolution curves of sinter materials were measured, and the results show that melting duration, peak temperature duration and sintering temperature of different layers differ greatly from each other; flame front speed and vertical sintering speed of bed lower region are much smaller than those of bed upper region. Simultaneously, sinter samples were collected from different layers, and their mineralogy characteristics are analyzed; sinters from bed lower region have poor mineralogy structure, and the amounts of perovskite and dicalcium silicate increase intensively, which are bad for sinter strength and reduction degradation property. Measures are proposed to improve the quality and productivity of titanomagnetite sinter. 相似文献
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鞍钢集团鞍山矿业公司东鞍山烧结厂1999年对烧结工艺进行改造(由生产碱度为1.35的自熔性烧结矿改为生产碱度为0.60的酸性小球团)后,出现部分工艺参数失调、烧结机主体漏风及台时产量降低等问题,经过采取技术攻关、强化烧结工艺管理等措施,使烧结机台时产量达到了100t以上,创造了可喜的效益. 相似文献
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Bulk Sm2Fe17Nx sintering magnet was fabricated by spark plasma sintering(SPS) technique. The effects of sintering pressure and sintering temperature on the magnetic properties of the Sm2Fe17Nx magnet were investigated. As a result, the density of the magnet is obviously improved with the increase of sintering pressure, but the coercivity drops since Sm2Fe17Nx has decomposed into SmN, α-Fe and N2. When sintering temperature was only above 200 ℃ under 1 GPa sintering pressure, the coercivity even begins to decrease, which indicates that high pressure promotes the decomposition of the Sm2Fe17Nx at lower temperature. The decomposition is also proved by the decrease of nitrogen and increase of α-Fe in the magnets. 相似文献
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合理的烧结制粒可以较好地应对原料的变化,并可得到较高的烧结利用系数和较好的还原性能。通过实验研究发现,用传统的烧结制粒工艺处理像褐铁矿这类多孔的铁矿石,烧结利用系数、冷强度和还原性都下降;而采用基于原料性质的分层制粒工艺不但可以减少烧结矿过熔,而且液相流动性也得到改善,因此烧结矿强度明显提高,料层透气性增加,从而使利用系数显著提高。 相似文献