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    Metal powder and sponge and processes for the production thereof
    3.
    发明授权
    Metal powder and sponge and processes for the production thereof 失效
    金属粉末和海绵及其生产方法

    公开(公告)号：US4655825A

    公开(公告)日：1987-04-07

    申请号：US648736

    申请日：1984-09-10

    申请人： Robert A. Hard ,  Joseph A. Megy

    发明人： Robert A. Hard ,  Joseph A. Megy

    IPC分类号： B22F9/02 ,  C22C1/04 ,  B22F9/00

    CPC分类号： C22C1/0458 ,  B22F9/023

    摘要： Passified Zinc Soluble Metal-Based Metal particles having a controlled particle size distribution suitable for metallurgy usage without additional particle size reduction and process for making the same. Such metal particles are substantially free of halides, hydrogen, oxygen, nitrogen and carbon and are produced at temperatures considerably below that of arc melting temperatures of Zinc Soluble Metal-Based Metals and alloys based thereon.

    摘要翻译： 通过的锌可溶性金属基金属颗粒，其具有适用于冶金使用的受控粒度分布，而不需要额外的粒径减小，并且制备该金属颗粒的方法。 这种金属颗粒基本上不含卤化物，氢气，氧气，氮气和碳，并且在相当于基于锌可溶性金属基金属的电弧熔化温度的温度和基于其的合金的温度下产生。

    Process for reducing phosphate ore
    4.
    发明授权
    Process for reducing phosphate ore 失效
    减少磷矿的工艺

    公开(公告)号：US4389384A

    公开(公告)日：1983-06-21

    申请号：US376335

    申请日：1982-05-10

    申请人： Robert A. Hard

    发明人： Robert A. Hard

    IPC分类号： C01B25/02 ,  C01B25/12 ,  C01B25/01 ,  C01B25/16

    CPC分类号： C01B25/12

    摘要： A process for producing phosphorus pentoxide from phosphorus ore includes formation of a feed with a phosphate ore, silica and solid carbonaceous material in amounts to produce a feed mixture having a CaO/SiO.sub.2 mole ratio of less than about 0.5. The feed mixture is formed into agglomerated feed particles and the particles are heated by exposure to radiation eminating from an oxidation zone to a temperature sufficient to reduce the phosphate by reaction from the solid carbonaceous material to form elemental phosphorus vapor without substantial melting of the agglomerated feed particles. Sufficient oxygen-containing gas is provided to cause oxidation of the elemental phosphorus vapor within the oxidation zone to produce phosphorus pentoxide.

    摘要翻译： 从磷矿石生产五氧化二磷的方法包括用磷酸盐矿石，二氧化硅和固体碳质材料形成进料的量，以产生CaO / SiO 2摩尔比小于约0.5的进料混合物。 进料混合物形成凝聚的进料颗粒，并且通过暴露于从氧化区排出的辐射将颗粒加热到足以通过从固体碳质材料反应而形成元素磷蒸气而减少磷酸盐的温度，而基本上不熔化附聚进料 粒子。 提供足够的含氧气体以引起氧化区内的元素磷蒸气氧化产生五氧化二磷。

    Methods to control H2S and arsine emissions
    5.
    发明授权
    Methods to control H2S and arsine emissions 失效
    控制H2S和胂排放的方法

    公开(公告)号：US06800259B2

    公开(公告)日：2004-10-05

    申请号：US10091377

    申请日：2002-03-04

    申请人： Robert A. Hard

    发明人： Robert A. Hard

    IPC分类号： C01G3500

    CPC分类号： C22B3/10 ,  C01G35/00 ,  C01P2006/80 ,  C22B1/00 ,  C22B34/24 ,  Y02P10/234

    摘要： Methods to control hydrogen sulfide and/or arsine emissions are described. The method involves adding at least one copper compound (such as a copper(II) compound) to the material, such as material containing sulfur in a sufficient amount to control said emissions. The material that is treated with the copper compound(s) is preferably an ore, such as a valve metal containing ore.

    摘要翻译： 描述了控制硫化氢和/或胂排放的方法。 该方法包括向材料中加入至少一种铜化合物（例如铜（II）化合物），例如含有足够量的硫的材料以控制所述排放。 用铜化合物处理的材料优选为矿石，例如含有矿物的阀金属。

    Recovery of magnesia from oil shale
    8.
    发明授权
    Recovery of magnesia from oil shale 失效
    从油页岩中回收氧化镁

    公开(公告)号：US4241951A

    公开(公告)日：1980-12-30

    申请号：US14007

    申请日：1979-02-21

    申请人： Robert A. Hard

    发明人： Robert A. Hard

    IPC分类号： E21B43/247 ,  E21B43/28 ,  E21C41/24 ,  E21C41/10

    CPC分类号： E21B43/281 ,  E21B43/247 ,  E21C41/24

    摘要： A fragmented permeable mass of formation particles containing oil shale and carbonates of calcium and magnesium is formed in an in situ oil shale retort. A combustion zone is advanced through the fragmented mass, whereby kerogen in oil shale in the fragmented mass is decomposed in a retorting zone on the advancing side of the combustion zone to produce gaseous and liquid products including shale oil. The combustion zone also converts the magnesium values in the particles of retorted oil shale to a more leachable form such as magnesium oxide. Magnesium values are selectively leached from the combusted particles, with respect to calcium compounds, with an aqueous solution of a purgeable, acid-forming gas such as carbon dioxide and a minor amount of a polyelectrolyte such as polyacrylic acid, polysulfonic acid, polyphosphonic acid, or the salts thereof. An enriched solution containing magnesium values is withdrawn from the fragmented mass and magnesia is recovered from such enriched solution.

    摘要翻译： 在原位油页岩蒸馏器中形成含有油页岩和钙和镁的碳酸盐的地层颗粒碎裂的渗透物质。 燃烧区通过破碎物质前进，由此在碎片物质中的油页岩中的油母质在燃烧区的前进侧的蒸馏区中分解，以产生包括页岩油的气态和液体产物。 燃烧区也将蒸馏油页岩颗粒中的镁值转化为更可浸出的形式，如氧化镁。 与煅烧的颗粒相对于钙化合物选择性地将镁值与可清除的酸形成气体如二氧化碳的水溶液和少量的聚电解质如聚丙烯酸，聚磺酸，聚膦酸， 或其盐。 将含有镁值的富集溶液从碎裂的物质中取出，从富集溶液中回收氧化镁。

    Process for producing phosphorus pentoxide or phosphorus or phosphoric acid
    10.
    发明授权
    Process for producing phosphorus pentoxide or phosphorus or phosphoric acid 失效
    生产五氧化磷或磷或磷酸的方法

    公开(公告)号：US4351813A

    公开(公告)日：1982-09-28

    申请号：US265307

    申请日：1981-05-20

    申请人： Joseph A. Megy ,  Robert A. Hard

    发明人： Joseph A. Megy ,  Robert A. Hard

    IPC分类号： C01B25/027 ,  C01B25/12 ,  C01B25/20 ,  C01B25/01 ,  C01B25/02 ,  C01B25/16

    CPC分类号： C01B25/12 ,  C01B25/027 ,  C01B25/20

    摘要： A process for producing phosphorus pentoxide from phosphate ores in a rotary-type kiln includes heating, by exposure to a flame, a porous bed comprising phosphate ore and solid carbonaceous material to a temperature sufficient to reduce the phosphorus pentoxide to phosphorus vapor. The phosphorus vapor is oxidized in an oxidation zone disposed over the porous bed to heat the porous bed. An inert gas is used to purge the porous bed of carbon monoxide formed during the reduction reaction to drive the reduction reaction more rapidly toward complete reduction of the phosphorus pentoxide and to inhibit oxidation of the phosphorus vapor and carbonaceous material within the porous bed.

    摘要翻译： 在旋转型窑中从磷酸盐矿石生产五氧化二磷的方法包括通过暴露于火焰中将包含磷酸盐矿石和固体碳质材料的多孔床加热至足以将五氧化二磷还原为磷蒸气的温度。 磷蒸汽在设置在多孔床上的氧化区中被氧化以加热多孔床。 惰性气体用于清除还原反应过程中形成的一氧化碳的多孔床，以更快速地驱动还原反应，从而完全还原五氧化二磷并抑制多孔床内的磷蒸气和碳质材料的氧化。