造球喷加炼钢污泥试验

造球过程中喷加炼钢污泥,可回收污泥中的有用金属,并可提高造球物料成球性能,增加生球量,达到综合利用的目的。炼钢污泥的泥浆浓度可通过测比重方法进行控制。     

宣（化）钢竖炉球团用含有机粘结剂改性膨润土的试验

在宣钢８ｍ＾２球团竖炉上采用含有机粘结剂的改性钠基膨润土替代普通钙基膨润土进行了工业试验。结果表明：改性钠基膨润土具有比普通钙基土更优良的性能,能明显提高生球的落下强度。     

混汞尾矿浸金实验研究

混汞尾矿直接用于制粒堆浸、金浸出率很低,只有54.7造被破坏,细敬金从矿物中暴露出来,金的浸出率有了很大的提高,可达83.8%。     

努力推进我国球团矿的生产

论述了我国发展球团矿生产的紧迫性和必要性,分析了国外球团矿生产发展的态势和我国目前球团矿生产的现状,指出了我国当前要进一步推进球团矿生产,并提出了球团厂建设中应注意的一些问题。     

新型电石成型原料研究

通过分析生石灰的消化曲线和热失重曲线,提出了合理的电石成型工艺.根据电石成型原料对粘结剂的要求,研制出ZJ型复合粘结剂并分析了粘结功效及机理.结合现场的生产要求,通过大量实验与分析,给出了合理的成型加水量、成型压力和养护龄期.     

中国高炉炼铁技术装备发展成就与展望

 近40年来，我国钢铁工业取得了巨大进步，钢铁产量连续多年居世界第一。我国高炉炼铁技术装备在大型化、现代化、高效化、长寿化等方面发展成就显著。2000年以来，一批5000m3以上特大型高炉、500m2以上大型烧结机、7.63m超大容积焦炉和年产400万t/a以上大型球团生产线相继建成投产，一系列自主研发、集成创新的炼铁关键技术在生产实践中取得重大应用成效。在技术装备大型化的同时，高炉富氧喷煤、无料钟炉顶、煤气干法除尘、顶燃式热风炉及高风温、高效低耗烧结技术、大型清洁炼焦技术等先进技术及其装备研发与应用成效显著，有力推动了炼铁技术装备进步。到本世纪中叶，我国钢铁工业格局和流程结构将发生重大变革，减量化、绿色化、智能化、高效化将是未来一个时期炼铁技术装备的主要发展趋势。     

The Effect of Calcined Colemanite Addition on the Mechanical Strength of Magnetite Pellets Produced with Organic Binders

Iron ore pellets must have sufficient mechanical strengths against degradation in all stages of pellet production. Low strength is also a problem for product pellets since they abrade during transportation to the reduction furnaces. The use of a binder is necessary to provide sufficient strength to the pellets and for better operation and handling of pellets. Bentonite is the standard binder in the industry; however, it is considered an impurity due to its acid oxide contents. Organic binders have been tested for many years as alternative binder to bentonite. They have been found to give sufficient wet pellet properties. However, they failed to provide sufficient strength to the preheated and fired pellets due to lack of slag bonding. It has been assumed that one possible effective method to improve the preheated and fired pellet strengths is addition of a slag-bonding constituent. In this study, calcined colemanite was added to the pellet feed to overcome the lower strength problem encountered with organic binder use. The strength of pellets produced with organic binders and calcined colemanite alone and in combination was comparatively studied against the strength of pellets made with standard bentonite binder in magnetite concentrate pelletizing. The results showed that addition of calcined colemanite into the pellet mixture improved the preheated and fired pellet strengths of pellets produced with organic binders.     

旋冲塔技术在烧结球团烟气脱硫中的应用

简述了近年来钢铁企业烧结球团烟气脱硫中采用的湿法,着重介绍了气喷旋冲塔湿法脱硫工艺,并与其他几种主流烟气脱硫法的技术特点进行了比较,通过对比最终兴澄120万t氧化球团烟气脱硫方式选用气喷旋冲塔法.     

两种水下切粒方式的比较

介绍了高聚物切粒工艺中较为常见的两种水下切粒方式——水下拉条切粒和水下模面切粒,比较了它们的优缺点。生产者可根据实际工艺条件和生产条件,选用适合的水下切粒方式,以满足生产要求。     

冶金建设球团工程监理案例

通过球团设备安装项目监理案例,介绍冶金球团工程设备安装项目监理的重点、方法和程序及现场问题的处理经验。