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    • 3. 发明授权
    • Method for producing beneficiated titanium oxides
    • 生产精选钛氧化物的方法
    • US06685761B1
    • 2004-02-03
    • US10392430
    • 2003-03-19
    • Glenn E. HoffmanRonald D. Gray
    • Glenn E. HoffmanRonald D. Gray
    • C21B306
    • C22B1/24C21B13/10C21B13/105C21B13/14C21C5/5252Y02P10/136Y02P10/214Y02P10/23
    • The invention is a method and apparatus for producing beneficiated titanium oxides using a modified rotary hearth furnace, that is a finisher-hearth-melter (FHM) furnace. In the method the refractory surface of the hearth is coated with carbonaceous hearth conditioners and refractory compounds, where onto said hearth is charged with pre-reduced agglomerates. The pre-reduced agglomerates is leveled, then heated until molten, and then reacted with the carbon and reducing gas burner gases until any residual iron oxide is converted to iron having a low sulfur content. Fluid slag and molted iron forms melted agglomerates. The fluid slag is rich in titanium. The melted agglomerates are cooled, and then the melted agglomerates and the hearth conditioners, including the refractory compounds, are discharged onto a screen, which separate the melted agglomerates from the hearth conditioner. The hearth conditioner is recycled, and the melted agglomerates are prepared for sale or for additional treatment in a final melter, where the final melter is preferably an electric furnace. Exhaust gases from the FHM furnace are recovered for calcining coal into fuel gases and coke.
    • 本发明是一种使用改性旋转炉床,即精整炉 - 炉(FHM)炉生产精选钛氧化物的方法和装置。 在该方法中,炉床的耐火表面涂覆有碳质炉床调节剂和耐火化合物,其中在所述炉床上装有预还原的附聚物。 将预还原的附聚物平整,然后加热至熔融,然后与碳和还原气体燃烧器气体反应,直到任何残留的氧化铁转化为具有低硫含量的铁。 流体渣和蜕皮铁形成熔融聚集体。 流体渣富含钛。 将熔融的附聚物冷却,然后将包含耐火化合物的熔融附聚物和炉床调节剂排出到筛网上,将熔融的附聚物与炉底调理器分离。 炉底调节剂被再循环,并且熔化的聚集体准备出售或在最终熔化器中进行额外处理,其中最终熔化器优选为电炉。 回收来自FHM炉的废气用于将煤煅烧成燃料气体和焦炭。
    • 6. 发明授权
    • Method of producing molten iron in duplex furnaces
    • 在双相炉中生产铁水的方法
    • US06251156B1
    • 2001-06-26
    • US09429973
    • 1999-10-29
    • Glenn E. HoffmanRonald D. Gray
    • Glenn E. HoffmanRonald D. Gray
    • C21B1312
    • C21B13/14C21B13/10C21B13/105C21C5/5252C22B1/24Y02P10/136
    • This invention relates to a method for operation of a rotary hearth furnace in conjunction with an electric melter for production of high purity iron product having a range of silicon and manganese, with low sulfur and phosphorus content. The method includes producing high purity iron product and a range of carbon content product from iron oxide and carbon bearing compacts, including the steps of providing a furnace for direct reduction of iron oxide and carbon bearing compacts, pre-reducing iron and carbon bearing compacts in a furnace having a rotary hearth surface, producing intermediate carbon-containing metallized iron. An electric melter furnace is utilized for receiving intermediate carbon-containing metallized iron from the pre-reducing step, which is fed directly and continuously into a central interior area of the electric melter, with heating of the carbon-containing metallized iron in the electric melter under elevated temperatures of about 1300° C. to about 1700° C., minimizing the ingress of air or other undesirable gases such as oxygen in the melting step while maintaining elevated temperatures, and removing high purity liquid iron product from the electric melter. The method provides a high iron content product having a specified range of carbon, silicon, and manganese percentages, with low sulfur and phosphorus content. There is significant reduction of silicon oxides, and reduction of manganese oxides in the product. An extremely desirable high iron content product is produced for use by the steelmaking industry.
    • 本发明涉及一种用于生产具有低硫和磷含量的硅和锰范围的高纯度铁产品的电动熔炉的旋转炉床炉的操作方法。 该方法包括生产高纯铁产品和一系列含氧化铁和含碳成型体的碳含量产品,其中包括提供直接还原氧化铁和碳素轴承压块的炉子,预还原铁和碳的轴承压块 具有旋转炉床表面的炉子,制造中间含碳金属化铁。 电熔炉用于从预还原步骤接收中间含碳金属化铁,该预还原步骤通过电熔炉中的含碳金属化铁的加热直接连续地进料到电熔化器的中心内部区域 在约1300℃至约1700℃的升高的温度下,在保持升高的温度的同时最小化熔融步骤中的空气或其它不需要的气体如氧气的进入,以及从电动熔化器中除去高纯度的液体铁产品。 该方法提供具有特定范围的碳,硅和锰百分比的具有低硫和磷含量的高铁含量产物。 氧化硅显着减少,产品中氧化锰的还原。 生产非常理想的高铁含量产品供炼钢工业使用。
    • 8. 发明申请
    • Apparatus for direct smelting of zinc bearing compounds to produce metallic zinc
    • 用于直接熔炼含锌化合物以生产金属锌的装置
    • US20120013053A1
    • 2012-01-19
    • US13200186
    • 2011-09-20
    • Glenn E. Hoffman
    • Glenn E. Hoffman
    • F27D17/00F27D27/00F27D3/14F27D13/00C22B1/00
    • C22B1/245C21B11/10C21B13/0013C21B13/12C21B2100/62C21B2100/66C21C5/527C21C2007/0062C22B4/00C22B5/10C22B5/16C22B13/02C22B19/04C22B19/10C22B19/18C22B34/12Y02P10/136Y02P10/216
    • Apparatus for producing lead and zinc from concentrates of zinc and lead sulfides or oxides, including: a source of zinc ore and/or lead ore concentrates, iron bearing and carbon containing materials; metallic iron fines and iron oxide fines; carbonaceous reductant; fluxing agent; and a binder; a mixer for forming a mixture from said concentrates and other materials; an agglomerator communicating with the mixer for forming agglomerates from the mixture; a melting furnace for melting the mixture and vaporizing lead and zinc; a pressure sealed feed system communicating with the agglomerator and the melting furnace for introducing agglomerates to the melting furnace; a pressure sealed chamber surrounding the melting furnace; a water-cooled condenser for receiving the vaporized metal and cooling and condensing the metal vapors to liquid metal; a tapping device communicating with the condenser for removing the liquid metal; and associated devices for separating the zinc and lead and recovering the lead and zinc metal separately.
    • 用于由锌和硫化铅或氧化物的浓缩物生产铅和锌的装置,包括:锌矿和/或铅矿精矿源,含铁和含碳材料; 金属铁粉和氧化铁细粉; 碳质还原剂; 助熔剂; 和粘合剂; 用于从所述浓缩物和其它材料形成混合物的混合器; 与混合器连通的凝结器,用于从混合物形成附聚物; 用于熔化混合物并蒸发铅和锌的熔化炉; 与凝聚器和熔炉连通的压力密封进料系统,用于将熔渣引入到熔化炉中; 围绕熔炉的压力密封室; 用于接收蒸发的金属并冷却和冷凝金属蒸气到液态金属的水冷式冷凝器; 与冷凝器连通以去除液态金属的攻丝装置; 以及用于分离锌和铅并分别回收铅锌金属的相关装置。