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    • 34. 发明授权
    • Flash roasting of molybdenum sulfide concentrates in a slagging reactor
    • 将硫化钼精矿在造渣反应器中进行快速焙烧
    • US4555387A
    • 1985-11-26
    • US583905
    • 1984-02-27
    • Bruce J. SabackyMalcolm T. Hepworth
    • Bruce J. SabackyMalcolm T. Hepworth
    • C01G39/02C22B1/02C22B34/34
    • C01G39/02C22B1/02C22B34/34
    • A process and system are provided for flash-roasting molybdenum sulfide containing slag-forming constituents. The process comprises feeding a pneumatically suspended stream of particulate molybdenum sulfide and a mixture of fuel and oxidizing gases through a nozzle into a confined furnace chamber, the fuel gas-oxidizing gas mixture exiting from the nozzle being ignited to provide a flame thereof, the flame being maintained at a condition to provide a temperature in the furnace chamber sufficient to oxidize the molybdenum sulfide and form a volatile gas comprising molybdenum trioxide. The temperature is at least sufficient to melt the slag-forming constituents such that the slag formed is sufficiently liquid to separate from the gaseous mixture and collect at a selected portion of said chamber for removal therefrom. The resulting gases in the volatile molybdenum trioxide are caused to flow from the furnace chamber to and through a condensing chamber, the temperature of the condensing chamber being controlled to condense the volatilized molybdenum trioxide and separate it from the off-gases.
    • 提供了一种快速焙烧含硫化钼的成渣成分的方法和系统。 该方法包括将气体悬浮的颗粒状硫化钼料流和燃料和氧化气体的混合物通过喷嘴进入限制炉室,从喷嘴排出的燃料气体 - 氧化气体混合物被点燃以提供其火焰,火焰 保持在炉室中提供足以氧化硫化钼并形成包含三氧化钼的挥发性气体的温度的条件。 温度至少足以熔化形成成渣的成分,使得形成的炉渣充分地液体以与气体混合物分离并收集在所述室的选定部分以从中除去。 使挥发性三氧化钼中的所得气体从炉室流出并通过冷凝室,冷凝室的温度被控制以冷凝挥发的三氧化钼并将其与废气分离。
    • 37. 发明授权
    • Method of recovering molybdenum oxide
    • 回收氧化钼的方法
    • US4379127A
    • 1983-04-05
    • US308845
    • 1981-10-05
    • Gunter BauerJoachim Eckert
    • Gunter BauerJoachim Eckert
    • C01G39/02C22B34/34
    • C01G39/02C22B34/34C01P2004/61C01P2006/80C01P2006/82
    • A method of recovering molybdenum oxide by oxidation of a molybdenum sulfide concentrate contaminated with impurities wherein the concentrate in an average particle size in the range of 20 to 90 microns is suspended to form an aqueous suspension which is oxidized at elevated temperature and an elevated oxygen partial pressure in an autoclave. The suspension withdrawn from the autoclave is subjected to filtration to remove the molybdenum oxide from the primary filtrate containing sulfuric acid and this filtrate is neutralized with lime to form calcium sulfate which is then removed from the suspension to provide a second filtrate. According to the invention, only this second filtrate is recirculated at a rate such that the suspension density in the oxidation stage is between 100 to 150 g of solids per liter and this suspension density is maintained in the oxidation stage by the recirculation.
    • 通过氧化由杂质污染的硫化钼浓缩物来回收氧化钼的方法,其中将平均粒度在20至90微米范围内的浓缩物悬浮以形成在升高的温度下被氧化并且升高的氧部分 高压釜中的压力。 将从高压釜中取出的悬浮液过滤,从含有硫酸的初级滤液中除去氧化钼,用石灰中和该滤液,形成硫酸钙,然后从悬浮液中除去,得到第二滤液。 根据本发明,只有该第二滤液以使得氧化阶段中的悬浮液密度在每升100至150g固体之间的速率再循环,并且该悬浮液密度通过再循环维持在氧化阶段。
    • 40. 发明授权
    • Direct reduction of molybdenum oxide to substantially metallic molybdenum
    • 将氧化钼直接还原成基本上金属的钼
    • US4045216A
    • 1977-08-30
    • US627972
    • 1975-11-03
    • Harry W. Meyer, deceasedJerry D. BakerWilliam H. Ceckler
    • Harry W. Meyer, deceasedJerry D. BakerWilliam H. Ceckler
    • C01G39/02C22B34/34
    • C01G39/02C22B34/34C01P2004/32C01P2004/50
    • A continuous process for producing a substantially dense pelletized metallic molybdenum product from an agglomerated molybdenum trioxide containing feed material in which the feed material is continuously charged at a controlled rate into a reactor formed with a first reaction maintained at a controlled first temperature and containing a first hydrogen-containing atmosphere having a controlled composition for effecting the exothermic reduction of molybdenum trioxide to molybdenum dioxide, whereafter the partially reduced pelletized feed is transferred at a controlled rate into a second reaction zone at a controlled higher temperature and incorporating a second hydrogen-containing atmosphere of a controlled different composition to effect an endothermic reduction of substantially all of the molybdenum dioxide to metallic molybdenum, which upon subsequent cooling is recovered as a pelletized product suitable for use in steelmaking, other metal alloy production, melting, chemical reaction operations and the like. The invention further contemplates a continuous single-stage process for producing a pelletized molybdenum dioxide product from a pelletized molybdenum trioxide feed material and a continuous single-stage process for producing a pelletized substantially metallic molybdenum product from a pelletized molybdenum dioxide feed material.
    • 一种用于从含聚集的含三氧化钼的进料中生产基本上致密的颗粒状金属钼产物的连续方法,其中将进料以受控的速率连续加入到形成有反应器的反应器中,所述反应器保持在受控的第一温度并含有第一 具有控制组合物的含氢气氛,用于将三氧化钼放热还原成二氧化钼,然后将部分还原的造粒的进料以受控的速率转移到受控较高温度的第二反应区,并加入第二含氢气氛 控制不同的组合物,以实现基本上所有的二氧化钼吸收还原成金属钼,金属钼在随后的冷却作为适合用于炼钢,其他金属合金生产,熔化,化学反应的造粒产品中被回收 操作等。 本发明进一步考虑了一种连续的单阶段方法,用于从造粒的三氧化钼进料中生产造粒的二氧化钼产品,以及用于从造粒的二氧化钼原料生产造粒的基本上金属的钼产品的连续的单阶段方法。