LOW TEMPERATURE DIRECT REDUCTION OF METAL OXIDES VIA THE IN SITU PRODUCTION OF REDUCING GAS

    公开(公告)号:US20190300982A1

    公开(公告)日:2019-10-03

    申请号:US16462895

    申请日:2017-11-22

    Abstract: A continuous process for low temperature reduction of metal oxides from carbonaceous material, using in situ produced reducing gas. In particular, a method of reducing metal oxide to metal in a continuous process comprising: (a) continuously introducing composite bodies comprising low rank carbonaceous material and metal oxide containing material that are in intimate contact and in a dry mix ratio of from about 1:2 to about 1:10 to an upper region of an upright retort; (b) conveying said bodies from said upper region to a heated lower region of said retort wherein said composite bodies are exposed to increasing temperature of up to about 950° C. and wherein said composite bodies are exposed to reducing gas generated in situ for a period of from about 15 minutes to about 3 hours to thereby produce a reduced metal containing product; and (c) continuously removing the reduced metal containing product from a lower region of the retort.

    A PROCESS FOR UPGRADING WASTE POWDERS FROM MINES, CONTAINING IRON OXIDES
    46.
    发明申请
    A PROCESS FOR UPGRADING WASTE POWDERS FROM MINES, CONTAINING IRON OXIDES 审中-公开
    一种从矿物,含铁氧化物中提炼废粉的方法

    公开(公告)号:US20160265081A1

    公开(公告)日:2016-09-15

    申请号:US15029685

    申请日:2014-10-16

    Inventor: Giuseppina Cerea

    CPC classification number: C22B1/005 C22B1/243 C22B1/244 C22B1/245 Y02P10/212

    Abstract: A process for upgrading waste powders of the mining industry containing iron oxides is described, which comprises the steps of preparing a mixture comprising powder based on iron oxides, an aqueous dispersion of a thermosetting resin and optionally also carbon powder, and a catalyst of acidic nature; kneading the mixture at a temperature comprised between 5 and 100 ° C. to form a homogeneous paste, and granulating such homogeneous paste at a temperature comprised between 100 and 300 ° C., thus obtaining granules comprising powder based on iron oxides and optionally carbon powder bound by said resin that has been polymerized.

    Abstract translation: 描述了一种用于升级含有氧化铁的采矿业废粉的方法,其包括以下步骤:制备包含基于氧化铁的粉末,热固性树脂的水性分散体和任选的碳粉末以及酸性催化剂的混合物 ; 在5-100℃的温度下捏合混合物以形成均匀的糊状物,并在100-300℃的温度下将这种均匀的糊料制粒,从而获得包含基于氧化铁的粉末和任选的碳粉末 被已经聚合的所述树脂结合。

    Composite system
    47.
    发明授权
    Composite system 有权
    复合系统

    公开(公告)号:US08936751B2

    公开(公告)日:2015-01-20

    申请号:US13557168

    申请日:2012-07-24

    Applicant: Robert G. Lee

    Inventor: Robert G. Lee

    Abstract: A multiphase composite system is made by binding hard particles, such as TiC particles, of various sizes with a mixture of titanium powder and aluminum, nickel, and titanium in a master alloy or as elemental materials to produce a composite system that has advantageous energy absorbing characteristics. The multiple phases of this composite system include an aggregate phase of hard particles bound with a matrix phase. The matrix phase has at least two phases with varying amounts of aluminum, nickel, and titanium. The matrix phase forms a bond with the hard particles and has varying degrees of hard and ductile phases. The composite system may be used alone or bonded to other materials such as bodies of titanium or ceramic in the manufacture of ballistic armor tiles.

    Abstract translation: 通过在主合金中以钛合金和铝,镍和钛的混合物结合各种尺寸的硬质颗粒(例如TiC颗粒)或作为元素材料来制造多相复合体系,以产生具有有利能量吸收的复合体系 特点 该复合体系的多相包括与基质相结合的硬质粒子的聚集相。 基质相具有至少两相,具有不同量的铝,镍和钛。 基质相与硬质颗粒形成粘结并具有不同程度的硬质和延性相。 复合系统可以单独使用或结合到其他材料,例如钛或陶瓷的制造中的弹道铠装瓦。

    Process for treating iron bearing material
    49.
    发明授权
    Process for treating iron bearing material 失效
    铁轴承材料处理方法

    公开(公告)号:US5782957A

    公开(公告)日:1998-07-21

    申请号:US746203

    申请日:1996-11-06

    Abstract: A process for treating iron-bearing material with a carbonaceous material to form a dry mixture, wherein the amount of carbonaceous material added exceeds the stoichiometric amount required to reduce the metal oxide to elemental metal. In one embodiment, the process also includes blending an organic binder with the dry mixture. The dry mixture is agglomerated to bond the dry mixture and form green compacts. The green compacts are loaded into a heated furnace and heated for about 5-12 minutes at a temperature of between about 2100.degree.-2500.degree. F. to reduce the iron oxide containing compacts to compacts containing elemental iron and an excess amount of carbonaceous material wherein the excess amount of carbonaceous material counteracts re-oxidation of the elemental iron. The reduced compacts are then discharged from the furnace.

    Abstract translation: 用含碳材料处理含铁材料以形成干混合物的方法,其中加入的碳质材料的量超过将金属氧化物还原成元素金属所需的化学计量量。 在一个实施方案中,该方法还包括将有机粘合剂与干混合物混合。 干燥的混合物凝聚以粘合干燥混合物并形成生坯。 将生坯压块加载到加热炉中并在约2100°-2500°F的温度下加热约5-12分钟,将含铁氧化物的成型体还原成含有元素铁和过量碳质材料的压块,其中 过量的碳质材料抵抗元素铁的再氧化。 然后将还原的压块从炉中排出。

    Waste treatment process
    50.
    发明授权
    Waste treatment process 失效
    废物处理过程

    公开(公告)号:US5626664A

    公开(公告)日:1997-05-06

    申请号:US586170

    申请日:1996-01-16

    Abstract: In a process for the treatment of at least one mixture of solid and liquid waste substances which contains at least one metal such as Fe and/or compounds thereof, for example oxides, the mixture occurring in a condition in which it can be used at least only with difficulty, the mixture is at least extensively homogenized and mixed with at least one very fine-grain dry substance containing fly ash and/or coke. The resulting mixture is of such a nature, for example being at least predominantly in the form of agglomerates, that it can be fed to a thermal procedure, possibly after a grading operation.

    Abstract translation: 在处理含有至少一种金属如Fe和/或其化合物(例如氧化物)的固体和液体废物的至少一种混合物的方法中,所述混合物在至少可以使用的条件下发生 只有困难,混合物至少被广泛均化并与至少一种含有飞灰和/或焦炭的非常细粒的干物质混合。 所得到的混合物具有这样的性质,例如至少主要是附聚物的形式,其可以进料到热程序,可能在分级操作之后。

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