Procédé de traitement des eaux provenant du rinçage de pièces métalliques ayant subi un décapage au moyen d'un acide fort
    51.
    发明公开
    Procédé de traitement des eaux provenant du rinçage de pièces métalliques ayant subi un décapage au moyen d'un acide fort 失效
    一种用于处理水的过程,是从金属片,其进行与强酸酸洗漂洗可有可无的。

    公开(公告)号:EP0019678A1

    公开(公告)日:1980-12-10

    申请号:EP79400765.8

    申请日:1979-10-19

    摘要: Ce procédé de Traitement Intégré des Effluents liquides de Décapage a pour objet un procédé de traitement des eaux provenant du rinçage de pièces métalliques ayant subi un décapage par un acide fort.
    Ce procédé est caractérisé par le fait qu'il comporte les étapes suivantes:

    a) on met en contact ladite eau de rinçage avec une résine cationique;
    b) on élue la résine chargée au moyen d'une solution au moins quatre fois normale de l'acide fort utilisé pour le décapage.

    Application au traitement des eaux de rinçage.

    摘要翻译: 1.一种用于水的处理过程中并已被用于漂洗已经历用强酸酸洗黑色金属零件,包括以下阶段:a)在所述清洗水被置于与阳离子树脂相接触; b)该带电树脂洗脱与用于酸洗的强酸的最小4N溶液; 由factthat的所述浓缩的酸,在步骤(b)中使用,其特征在于为用于酸洗溶液和含有40〜150克每升铁,金属离子浓度和强酸浓度之间的比例,在革兰氏当量表示 ,处于三分之一之最。

    MACHINE AND METHOD FOR CLEANING PAINTING TOOLS AND TREATING CLEANING WATER

    公开(公告)号:EP4350036A2

    公开(公告)日:2024-04-10

    申请号:EP23194836.5

    申请日:2023-09-01

    申请人: IDM S.r.l.

    发明人: VIOLA, Salvatore

    IPC分类号: C23G1/36 C23G3/00 B08B3/14

    摘要: A machine (100) for cleaning painting tools and treating tool cleaning water comprises a hopper (5) to collect cleaning water from a sink (9) and/or an automatic cleaning device (10). A flocculation process takes place in the hopper to separate flakes from cloudy water. The machine further comprises a clarification unit (11) to subject the cloudy water to a clarification process so that it may be reused for cleaning tools. [Fig. 1]

    STEEL PLATE PICKLING METHOD AND PICKLING DEVICE

    公开(公告)号:EP3951014A1

    公开(公告)日:2022-02-09

    申请号:EP20911916.3

    申请日:2020-01-09

    摘要: A method for pickling a steel plate having a first steel plate portion and a second steel plate portion which is connected to a tail end of the first steel plate portion and which requires a longer time for pickling than the first steel plate portion when pickled under the same condition includes: a step of pickling the steel plate by immersing the steel plate in an acid solution in at least one pickling tank while conveying the steel plate; a step of circulating the acid solution, through a circulation line connected to any of the at least one pickling tank, between the pickling tank and an oxidizing device disposed in the circulation line; a step of oxidizing Fe 2+ in the acid solution to Fe 3+ by the oxidizing device using a gaseous oxidant; and a feeding start step of, upon switching from pickling of the first steel plate portion to pickling of the second steel plate portion, starting feeding of a liquid oxidant for oxidizing Fe 2+ in the acid solution to Fe 3+ to any of the at least one pickling tank or to the circulation line.

    METHOD FOR TREATING PICKLING ACID RESIDUE
    56.
    发明公开

    公开(公告)号:EP3839100A1

    公开(公告)日:2021-06-23

    申请号:EP20212623.1

    申请日:2020-12-09

    申请人: CrisolteQ Ltd

    IPC分类号: C23G1/36

    摘要: A novel process for treating pickling acid residue and recovering sulfates and nickel therefrom has been developed. By lowering the pH of a magnesium compound slurry to 4-5.5 with sulfuric acid containing pickling acid residue in the presence of ammonium sulfate, both magnesium sulfate and nickel sulfate are solubilized. Magnesium sulfate and nickel sulfate solution is separated from the solids by filtration and an iron hydroxide and chromium hydroxide residue is obtained as a precipitate. Magnesium sulfate and nickel sulfate are then separated from the solution.

    PROCESSING OF A WASTE METAL MATERIAL COMPRISING AN IRON COMPONENT AND A NON-IRON METAL COMPONENT

    公开(公告)号:EP3406745A1

    公开(公告)日:2018-11-28

    申请号:EP17172145.9

    申请日:2017-05-22

    申请人: CMI UVK GmbH

    IPC分类号: C22B3/44 C01G49/02 C23G1/36

    CPC分类号: C22B3/44 C01G49/06 C23G1/36

    摘要: The present invention relates to a method for processing a metal containing material, comprising at least one non-iron metal component and at least one iron component, wherein the metal containing material is at least partly separated into a solid iron oxide component and into at least part of the at least one non-iron metal component, the method comprising the following steps:
    -- in a precipitation step, at least part of the at least one non-iron metal component is precipitated in an acid solution, the acid solution comprising the metal containing material and an added iron component, being added to the acid solution and comprising either a further iron component and/or an iron component in the form of an iron salt component, and, by means of the precipitation step, at least part of the at least one non-iron metal component is removed from the remaining acid solution, remaining after the precipitation step and comprising either at least part of the at least one iron component and/or at least part of the added iron component,
    -- in a hydrolysis step, the remaining acid solution is at least partly hydrolyzed, at least partly yielding a solid iron oxide component, an acid component, and optionally a remaining part of the iron salt component.