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    Hydrometallurgical method for treating valuable metal raw materials containing chlorides and fluorides
    1.
    发明授权
    Hydrometallurgical method for treating valuable metal raw materials containing chlorides and fluorides 失效
    用于处理含有氯化物和氟化物的有价金属原料的湿法冶金方法

    公开(公告)号：US4698139A

    公开(公告)日：1987-10-06

    申请号：US816951

    申请日：1986-01-06

    Applicant: Sigmund P. Fugleberg ,  Jaakko I. Poijarvi

    Inventor： Sigmund P. Fugleberg ,  Jaakko I. Poijarvi

    IPC: C01G1/10 ,  C01G9/06 ,  C22B3/08 ,  C25C1/16 ,  C22B3/00

    CPC classification number: C22B3/08 ,  C01G1/10 ,  C01G9/06 ,  Y02P10/234 ,  Y10S423/02

    Abstract: The purpose of the method is to remove chlorides and fluorides from a valuable metal raw material by leaching the raw material into sulphuric acid solution and by crystallizing the valuable metal sulphate selectively out of the solution. The valuable metal sulphate crystals are washed in sulphuric acid solution, and the recovered dechlorinated and defluorinated crystals are leached into water and conducted into electrolysis. The sulphuric acid solution employed in the raw material leaching and in the crystal washing is preferably the same as the return acid of the electrolysis. Chlorides and fluorides are removed from the mother liquor of crystallization in the bleed.

    Abstract translation: 该方法的目的是通过将原料浸入硫酸溶液中并通过将有价值的金属硫酸盐选择性地从溶液中析出而从有价值的金属原料中除去氯化物和氟化物。 将有价值的金属硫酸盐晶体在硫酸溶液中洗涤，将回收的脱氯和脱氟晶体​​浸入水中并进行电解。 用于原料浸出和洗涤中的硫酸溶液优选与电解回流酸相同。 氯化物和氟化物在出血中从结晶母液中除去。

    Production of hydrogen fluoride
    2.
    发明授权
    Production of hydrogen fluoride 失效
    生产氟化氢

    公开(公告)号：US3878294A

    公开(公告)日：1975-04-15

    申请号：US42642373

    申请日：1973-12-19

    Applicant: BAYER AG

    Inventor： SCHABACHER WERNER ,  GUTH HANS ,  ROHE HERMANN ,  KELLER WOLFGANG

    IPC: C01B7/19 ,  C01B33/10 ,  C01F11/46 ,  C01G1/10 ,  C01B7/22

    CPC classification number: C01B7/192 ,  C01B33/103 ,  C01F11/46 ,  C01G1/10

    Abstract: In the production of hydrogen fluoride and metal sulfates by the reaction of sulfuric acid and a metal fluoride, e.g. fluorspar, wherein the fluorspar is preheated, the improvement which comprises effecting the preheating by continuously heating the metal fluoride to about 500* to 800*C in a gas/solid suspension with a gas charge of about 0.2 to 4 kg/Nm3 and then reacting the preheated metal fluoride with sulfuric acid at a temperature of about 100* to 500*C. The preheating is preferably effected in counterflow with hot combustion gases, the preheater either having alternating constricted and widened zones or allowing the fluorspar to be alternately suspended in and separated from the gas passing through the preheater. The sulfuric acid is conveniently added to the fluorspar at a plurality of points prior to entry into the main reactor. In addition, an alkaline substance such as calcium oxide or hydroxide which reacts exothermically with sulfuric acid may be added to the preheater or thereafter so as to provide additional heat for the main reaction. The sulfuric acid may contain sulfur trioxide or oleum, preferably in appropriate amount to react with the by-product water formed from the exothermic reaction of the calcium or hydroxide.

    Abstract translation: 在通过硫酸和金属氟化物反应制备氟化氢和金属硫酸盐时，例如， 氟石，其中氟石被预热，其改进包括通过在约0.2至4kg / Nm 3的气体填充气体/固体悬浮液中连续加热金属氟化物至约500至800℃进行预热，然后使 在约100℃至500℃的温度下用硫酸预热的金属氟化物。预热优选与热燃烧气体逆流进行，预热器具有交替的收缩和加宽的区域，或允许荧光交替悬浮在 与通过预热器的气体分离。 在进入主反应器之前，硫酸在多个点方便地加入氟石中。 此外，可以将预先加热到硫酸等与碱发生反应的碱性物质如氧化钙或氢氧化物，以便为主反应提供额外的热量。 硫酸可以含有三氧化硫或发烟硫酸，优选适量地与由钙或氢氧化物的放热反应形成的副产物水反应。

    Solid-liquid contacting apparatus
    4.
    发明授权
    Solid-liquid contacting apparatus 失效
    固液接触装置

    公开(公告)号：US3717440A

    公开(公告)日：1973-02-20

    申请号：US3717440D

    申请日：1970-08-20

    Applicant: CLIMAX CHEM

    Inventor： CANNON C

    IPC: B01J8/20 ,  C01B7/03 ,  C01D5/02 ,  C01G1/10

    CPC classification number: C01D5/02 ,  B01J8/20 ,  C01B7/03

    Abstract: An apparatus for providing contact between a liquid and solid particles having an upright vessel with an upper outlet and a pair of lower outlets, a plurality of concentric upwardly directed inlets into said vessel with one of the outer inlets including a means for swirling its discharge around the inner inlet, means for axially adjusting the discharge position of the central inlet and means for directing oversized particles to one of said lower outlets and smaller particles to the other of said lower outlets. Such apparatus is particularly useful in providing intimate contact between solid salts and an acid, such as salt such as sodium chloride, to produce a volatile acid and sulfate granules.

    Abstract translation: 一种用于在具有直立容器的液体和固体颗粒之间提供接触的装置，其具有上部出口和一对下部出口，多个同心向上定向的入口进入所述容器，其中一个外部入口包括用于使其排放物周围旋转的装置 内部入口，用于轴向调节中心入口的排出位置的装置和用于将过大的颗粒引导到所述下部出口中的一个并且将较小颗粒引导到所述下部出口中的另一个的装置。 这种装置特别可用于提供固体盐和酸（如盐如氯化钠）之间的紧密接触，以产生挥发性酸和硫酸盐颗粒。

    TREATMENT PROCESS FOR CRYSTALLIZING A METAL SULFATE
    8.
    发明申请
    TREATMENT PROCESS FOR CRYSTALLIZING A METAL SULFATE 有权

    公开(公告)号：US20230049318A1

    公开(公告)日：2023-02-16

    申请号：US17977408

    申请日：2022-10-31

    Applicant: HATCH LTC.

    Inventor： Robert John Fraser ,  Henry Christian Immo Von Schroeter ,  Mark Joseph Machado

    IPC: C01G1/10

    Abstract: A treatment process for crystallizing a metal sulfate involving pre-treating a feedstock comprising calcium, magnesium, and/or lithium impurities, the pre-treating involving pre-leaching the feedstock in the presence of a lixiviant, selectively extracting a first portion of any of the impurities from the feedstock, and forming a leached solution comprising an uncrystallized metal sulfate and any remaining impurities; and/or refining the leached solution and removing a second portion of any of the remaining impurities; and crystallizing the uncrystallized metal sulfate from the leached solution to form a crystallized metal sulfate. So processed, the crystallized metal sulfate may be battery-grade or electroplating-grade.

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