知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

141 条记录 (耗时 0.024 秒)

    REDUCTION CELL FOR PRODUCING ALUMINUM
    1.
    发明公开
    REDUCTION CELL FOR PRODUCING ALUMINUM 审中-公开

    公开(公告)号：US20240351898A1

    公开(公告)日：2024-10-24

    申请号：US18763276

    申请日：2024-07-03

    申请人： ALUMINUM TECHNOLOGIES, LLC

    发明人： Donald Ray BRADFORD ,  Larry George BOXALL ,  Charles Ernest TOTH ,  Charles Ernest TOTH, III ,  Caroline Toth REILY ,  Charles TOTH ,  Lester L. KNAPP

    IPC分类号： C01F7/60

    CPC分类号： C01F7/60

    摘要： A carbo-chlorination process is disclosed for selectively producing AlCl3 from an alumina-containing feedstock, comprising introducing the following into a fluidized bed reactor maintained at 600-700° C.: (a) dried and calcined feed stream comprising the alumina-containing feedstock and a carbon feed; (b) chlorinating agent; (c) selectivity agent; (d) dried air; and optionally (e) off-spec AlCl3. The process further includes removing a vapor stream from the reactor in which preferably about 75-80%, of the alumina present in the reactor is converted to AlCl3; and also removing a solid raw pozzolan stream from the reactor, wherein about 90-99% of the silica present in the reactor remains unconverted and exits the reactor through the solid raw pozzolan stream. The vapor stream comprising AlCl3 is purified to create an AlCl3 product stream comprising preferably greater than about 99.99% AlCl3. The raw pozzolan product is classified to remove coke and create a final pozzolan product having a strength activity index (SAI) in the range of 80-160, per ASTM 618.

    METHOD FOR PRODUCING TETRAHALOSILANES
    3.
    发明申请
    METHOD FOR PRODUCING TETRAHALOSILANES 审中-公开
    生产四氢呋喃的方法

    公开(公告)号：US20140335006A1

    公开(公告)日：2014-11-13

    申请号：US14353910

    申请日：2012-10-26

    申请人： Spawnt Private S.à.r.l.

    发明人： Norbert Auner

    IPC分类号： C01B33/107

    CPC分类号： C01B33/10747 ,  C01B33/10705 ,  C01F7/60

    摘要： A method produces tetrahalosilanes (SiX4) (X=halogen, more particularly Cl, F) from processed rock masses including high-viscosity hydrocarbons and SiO2 and/or silicates, or from the residue masses obtained in the course of such processing. The masses may be heated in a stream of hydrogen halide, and the (SiX4) which forms in the course of this heating is captured or distilled off. The masses may be admixed with hydrofluoric acid (HF) and/or alkali metal fluoride or alkaline earth metal fluoride and with sulfuric acid, and the (SiX4) which forms in the course of the admixing is captured or distilled off.

    摘要翻译： 一种方法是从包括高粘度烃和SiO2和/或硅酸盐的加工岩体或从这种加工过程中获得的残余物质中产生四卤代硅烷（SiX4）（X =卤素，更特别是Cl，F）。 可以在卤化氢流中加热物质，并且在该加热过程中形成的（SiX 4）被捕获或蒸馏掉。 可以将这些物质与氢氟酸（HF）和/或碱金属氟化物或碱土金属氟化物和硫酸混合，并且在混合过程中形成的（SiX 4）被捕获或蒸馏掉。

    Production of a purified alumina-silica product and substantially pure aluminum chloride from bauxites and clays
    7.
    发明授权
    Production of a purified alumina-silica product and substantially pure aluminum chloride from bauxites and clays 失效
    从铝土矿和粘土生产纯化的氧化铝 - 二氧化硅产品和基本上纯的氯化铝

    公开(公告)号：US4425308A

    公开(公告)日：1984-01-10

    申请号：US426263

    申请日：1982-09-29

    申请人： David Weston

    发明人： David Weston

    IPC分类号： C01F7/60 ,  C09C1/42 ,  C01F7/02 ,  C01F7/56

    CPC分类号： C09C1/42 ,  C01F7/60 ,  C01P2002/02 ,  C01P2004/82 ,  C01P2006/80

    摘要： At least a single stage chlorination system for the production of a substantially iron-free alumina-silica product from Bauxites, Bauxitic Clays and Clays wherein at least one chlorination agent is selected from the group consisting of Cl.sub.2, COCl.sub.2, AlCl.sub.2, AlCl, SiCl.sub.4 and SiCl.sub.2 and wherein the said chlorination agent is a limited percentage of the total gas stream.

    摘要翻译： 用于从铝土矿，铝土矿粘土和粘土生产基本上无铁的氧化铝 - 二氧化硅产品的至少一级氯化系统，其中至少一种氯化剂选自Cl2，COCl2，AlCl2，AlCl，SiCl4和 SiCl 2，其中所述氯化剂是总气流的有限百分比。

    System for transporting particulate solids from high temperature to low temperature zone
    8.
    发明授权
    System for transporting particulate solids from high temperature to low temperature zone 失效
    将颗粒固体从高温运送到低温区的系统

    公开(公告)号：US4301138A

    公开(公告)日：1981-11-17

    申请号：US143172

    申请日：1980-04-24

    申请人： Kenneth W. Ryan ,  Elmer H. Rogers, Jr.

    发明人： Kenneth W. Ryan ,  Elmer H. Rogers, Jr.

    IPC分类号： B01J8/00 ,  C01F7/60 ,  F27B15/08

    CPC分类号： C01F7/60 ,  B01J8/003 ,  Y10S423/16

    摘要： Fluidizable particulate solids are removed from a first zone operating at a relatively higher temperature and pressure to a second zone or collector operating or maintained at a lower temperature and pressure by an improved drain or particle removal system. The improved system includes moving the particles from the first zone downwardly within a substantially vertical inlet conduit or leg into the lower regions of a first chamber and upwardly through that chamber under fluidized particle transport conditions energized by a fluidizing media provided in the chamber. The particles move to a second chamber by overflowing a weir separating the first and second chambers and are mixed with cooler particles which extract heat within the second chamber under fluidized particle transport conditions energized by a second fluidizing gas source which further transports the particles to the collector or second zone. Heat is removed from the second chamber by indirect heat exchange. The volume of fluidizing gas for the second chamber is much larger than that for the first chamber and provides for particle flow rate control in combination with a flow restriction. Particle flow is interrupted by stopping the particle flow out of, and the gas flow into, the second chamber while maintaining fluidizing gas flow into the first chamber and the inlet leg. The system is particularly suited to draining unreacted alumina from a chlorination reactor for producing gaseous aluminum chloride from particulate alumina.

    摘要翻译： 可流动的颗粒固体从在相对更高的温度和压力下操作的第一区域移除到通过改进的排水或颗粒去除系统操作或保持在较低温度和压力下的第二区域或集水器。 改进的系统包括将颗粒从第一区域向下移动到基本上垂直的入口导管或腿部内进入第一室的下部区域，并且在由设置在室中的流化介质激励的流化颗粒运输条件下向上通过该室。 颗粒通过溢出分离第一和第二室的堰而移动到第二室，并与在由第二流化气体源激励的流化颗粒运输条件下在第二室内提取热量的冷却器颗粒混合，所述第二流化气体源将颗粒进一步输送到收集器 或第二区。 通过间接热交换将热量从第二室排出。 用于第二室的流化气体的体积比第一室的流化气体的容积大得多，并提供与流量限制相结合的颗粒流速控制。 通过使颗粒流出停止，并且气体流入第二室，同时保持流化气体流入第一室和入口支管而中断颗粒流动。 该系统特别适于从用于从颗粒氧化铝生产气态氯化铝的氯化反应器中排出未反应的氧化铝。

    Process for the production of aluminum chloride
    9.
    发明授权
    Process for the production of aluminum chloride 失效
    氯化铝生产工艺

    公开(公告)号：US4289735A

    公开(公告)日：1981-09-15

    申请号：US117462

    申请日：1980-02-01

    申请人： Hans P. Mueller ,  Hanspeter Alder ,  Gerhard Zhuber-Okrog

    发明人： Hans P. Mueller ,  Hanspeter Alder ,  Gerhard Zhuber-Okrog

    IPC分类号： C01F7/60 ,  C22B1/08 ,  C22B21/00 ,  C01F7/56

    CPC分类号： C01F7/60 ,  C22B1/08 ,  C22B21/0007 ,  C22B21/0046 ,  Y10S423/16

    摘要： The efficiency of a given reactor for the conversion of aluminum oxide bearing starting material by means of reducing and chlorinating gases or of carbon coated aluminum oxide bearing starting material by means of chlorinating gases in a solid/gas fluidized bed to yield aluminum chloride is improved by the addition of an inert, solid dilution agent to the bed. Whereas, as a result of the chemical reaction, the average particle size and bulk density of the reagent decreases in a batch process, and in a continuous process an equilibrium value is reached, the average particle size and the bulk density of the inert material remains unchanged. An initial average particle size of 60-80 microns proved successful; quartz, corundum, magnesium oxide of similar particle size and bulk density was added as dilution agent, and a gas flow rate of 2 to 30 cm/sec was attained along with quantitative conversion of the gaseous reagent. The increase in the space-time-yield of a fluidized bed reactor, measured by the conversion achieved before onset of breakthrough in the fluidized bed, amounted to 58 to 65%.

    摘要翻译： 通过在固/气流化床中通过氯化气体还原和氯化气体或含碳涂覆的氧化铝负载起始材料以得到氯化铝，给定的反应器用于转化含氧化铝原料的效率得到改善 向床中加入惰性固体稀释剂。 而作为化学反应的结果，试剂的平均粒度和体积密度在间歇过程中减少，而在连续过程中，达到平衡值，惰性材料的平均粒度和体积密度保持 不变 60-80微米的初始平均粒径证明是成功的; 加入石英，刚玉，粒径相似的体积和体积密度的氧化镁作为稀释剂，气态试剂的定量转化得到2〜30cm / sec的气体流量。 流化床反应器的时空产量的增加通过在流化床中的穿透开始之前实现的转化率来测量，达58％至65％。

    Process for recovering aluminum and other metal values from fly ash
    10.
    发明授权
    Process for recovering aluminum and other metal values from fly ash 失效
    从飞灰中回收铝和其他金属值的工艺

    公开(公告)号：US4159310A

    公开(公告)日：1979-06-26

    申请号：US873400

    申请日：1978-01-30

    申请人： James E. Reynolds ,  Alan R. Williams

    发明人： James E. Reynolds ,  Alan R. Williams

    IPC分类号： B01D49/00 ,  B01D53/68 ,  C01B33/107 ,  C01F7/60 ,  C01G23/02 ,  C01G49/10 ,  C22B7/02 ,  C22B21/00 ,  C01B33/08 ,  C01F7/56

    CPC分类号： C01B33/10721 ,  B01D49/00 ,  B01D53/68 ,  C01F7/60 ,  C01G23/022 ,  C01G49/10 ,  C22B21/0046 ,  C22B7/02 ,  Y02P10/212

    摘要： A process for recovering aluminum from fly ash containing iron, silicon and titanium which comprises: (a) chlorinating the fly ash in an oxidizing atmosphere to selectively chlorinate and vaporize iron chloride from the remaining chlorides, (b) chlorinating the residue from step (a) in a reducing atmosphere of carbon monoxide, in the presence of added silicon chloride to suppress the chlorination of silicon, and vaporizing the chlorides of aluminum, silicon, titanium, and the residual iron, (c) separating and recovering the vaporized chlorides by selective condensation, and treating the residue of step (b) with sulfuric acid to convert calcium chloride to gypsum, and to regenerate a chloridizing and binder solution for pelletizing fly ash feed.

    摘要翻译： 一种用于从含有铁，硅和钛的飞灰中回收铝的方法，其包括：（a）在氧化气氛中氯化飞灰以选择性地将氯化物从剩余的氯化物中氯化和蒸发，（b）将步骤（a ）在一氧化碳的还原气氛中，在添加的氯化硅的存在下抑制硅的氯化，并蒸发铝，硅，钛和残留的铁的氯化物，（c）通过选择性分离和回收蒸发的氯化物 冷凝，并用硫酸处理步骤（b）的残余物，将氯化钙转化为石膏，再生氯化和粘结剂溶液，以造粒粉煤灰进料。