METHOD FOR RECYCLING SCRAP CONTAINING ALUMINIUM-LITHIUM-TYPE ALLOYS
    1.
    发明申请
    METHOD FOR RECYCLING SCRAP CONTAINING ALUMINIUM-LITHIUM-TYPE ALLOYS 审中-公开
    用于回收包含铝 - 锂合金类型的SCRAP的方法

    公开(公告)号:WO2007015013A3

    公开(公告)日:2007-03-15

    申请号:PCT/FR2006001887

    申请日:2006-08-03

    Abstract: The invention relates to a method for melting scrap consisting of alloy components containing lithium. According to said method, (i) scrap containing aluminium-lithium-type alloys is collected (collection step); (ii) an initial bed of a liquid metal consisting of a first composition is prepared in a smelting furnace (preparation step for the initial bed of liquid metal); (iii) the scrap is loaded onto the initial bed of liquid metal in such a way as to create a floating blanket of the scrap with a controlled thickness on the surface of the bed of liquid metal (loading step), said blanket partially melting as it comes into contact with the bed of liquid metal in such a way as to obtain a bath of liquid metal consisting of a second composition that can be the same as, or different from, the first composition, and the lithium content of the bath of liquid metal consisting of a second composition amounting to between 0.1 %, preferably 0.2 %, and 2.5 % wt. % of the total weight; and (iv) the liquid metal is extracted (extraction step) from the bath of liquid metal consisting of a second composition. The inventive method is technically and economically advantageous in that it does not require investment into a particular installation, especially containing an inert atmosphere, and it does not require, or at least minimises, the use of expensive consumables such as inert gas, as the formation of a blanket of scrap with a controlled thickness enables the surface of the liquid metal to be protected from oxidation in a surprisingly efficient manner.

    Abstract translation: 本发明涉及一种熔融废料的方法,该方法由含有锂的合金成分组成。 根据所述方法,(i)收集含有铝 - 锂型合金的废料(收集步骤); (ii)在冶炼炉(液态金属初始床的制备步骤)中制备由第一组合物组成的液态金属的初始床; (iii)将废料装载到液态金属的初始床上,以便在液态金属床表面(加载步骤)上产生具有受控厚度的废料的浮动毯,所述橡皮布部分熔化为 它与液态金属床接触以获得由与第一组合物相同或不同的第二组合物组成的液态金属浴,以及第一组合物的浴的锂含量 由第二组合物组成的液体金属为0.1%,优选0.2%和2.5%wt。 总重量的百分比; 和(iv)从由第二组合物组成的液态金属浴中提取液体金属(萃取步骤)。 本发明的方法在技术上和经济上都是有利的,因为它不需要投资到特定的装置中,特别是含有惰性气氛,并且不需要或至少最小化使用诸如惰性气体的昂贵的消耗品作为地层 具有受控厚度的废料毯可使液体金属的表面以惊人的有效方式被保护免受氧化。

    PROCÉDÉ DE RECYCLAGE DE SCRAP D'ALLIAGES DE TYPE ALUMINIUM-LITHIUM
    2.
    发明申请
    PROCÉDÉ DE RECYCLAGE DE SCRAP D'ALLIAGES DE TYPE ALUMINIUM-LITHIUM 审中-公开
    回收铝 - 锂合金废料的方法

    公开(公告)号:WO2007015013A2

    公开(公告)日:2007-02-08

    申请号:PCT/FR2006/001887

    申请日:2006-08-03

    Abstract: Procédé de fusion de scrap en alliage d'aluminium contenant du lithium dans lequel (i) on approvisionne du scrap contenant des alliages de type aluminium-lithium (étape d'approvisionnement) ; (ii) on prépare un lit initial de métal liquide d'une première composition (étape de préparation du lit initial de métal liquide) dans un four de fusion ; (iii) on charge ledit scrap sur ledit lit initial de métal liquide de façon à créer à la surface dudit lit de métal liquide un matelas flottant d'épaisseur contrôlée dudit scrap (étape de chargement), ledit matelas fondant partiellement au contact dudit lit de métal liquide de façon à obtenir un bain de métal liquide d'une seconde composition pouvant être égale ou différente de la première composition , la teneur en lithium dudit bain de métal liquide d'une seconde composition étant comprise entre 0,1% et préférentiellement 0,2% à 2,5% en poids ; (iv) on prélève le métal liquide (étape de prélèvement) dudit bain de métal liquide d'une seconde composition. Le procédé selon l'invention présente des avantages techniques et économiques : - il ne nécessite pas d'investir dans une installation particulière, notamment à atmosphère inerte, - il ne nécessite pas, ou il minimise l'utilisation de consommables onéreux tels que du gaz inerte, car la formation d'un matelas de scrap d'épaisseur contrôlée permet de protéger de l'oxydation la surface du métal liquide d'une façon étonnement efficace.

    Abstract translation:

    处理程序; 含锂铝合金废料熔化,其中(i)供应含有铝锂合金的废料(供应阶段); (ii)在熔化炉中制备第一组合物的液态金属的初始床(初始液态金属床的制备步骤); (iii)借助于所述废料装载到所述液态金属的初始床上 创造à 所述液体床的表面是由所述废料控制厚度的浮动床垫(装载步骤),所述床垫通过以下方式部分地熔化与所述液态金属床接触: ; 获得第二组合物的液体金属浴,所述第二组合物可与第一组合物相同或不同,第二组合物的所述液体金属浴的锂含量为 在0.1%和优选0.2%之间。 2.5重量%; (iv)预定义第二组合物的所述液态金属浴的液态金属(前级)。 d&oacute的过程; 根据本发明,具有技术和经济优点: - 不需要投资于特定的设备,特别是; 惰性气氛, - 它不要求,或者最大限度地减少昂贵的消耗品如惰性气体的使用,因为形成控制厚度的废料床垫允许 以保护液态金属表面免受有效褪色的氧化。

    METHOD FOR REGULATING THE LEVEL OF THE CONTACT LINE OF THE FREE METAL SURFACE WITH THE INGOT MOULD IN A CONTINUOUS VERTICAL CASTING
    3.
    发明申请
    METHOD FOR REGULATING THE LEVEL OF THE CONTACT LINE OF THE FREE METAL SURFACE WITH THE INGOT MOULD IN A CONTINUOUS VERTICAL CASTING 审中-公开
    用于在连续垂直铸造中调整自由金属表面的接触线水平的方法

    公开(公告)号:WO1986001756A1

    公开(公告)日:1986-03-27

    申请号:PCT/FR1985000252

    申请日:1985-09-18

    CPC classification number: B22D11/115 B22D11/16

    Abstract: Method for adjusting the level of the contact line of the free metal surface with the ingot mould (c) in a continuous vertical casting. The method comprises the application to the liquid in the course of its solidification of a variable periodic magnetic field of which the direction (9) is substantially parallel to the axis of the ingot mould (3) and the adaptation of the intensity of said field as a function of the desired level. It finds its application in the casting of metallurgical semi-products particularly of aluminium and alloys thereof such as lithium alloys and wherein the aim is to obtain a cortical zone of zero thickness, a fine grain without previous addition of refining agents and an absence of barbs.

    Abstract translation: 用铸锭模具(c)在连续垂直铸造中调节自由金属表面的接触线的水平的方法。 该方法包括在固化其中方向(9)基本上平行于铸模(3)的轴线的可变周期磁场的过程中对液体的应用以及将所述磁场的强度适应为 所需水平的功能。 它可用于铸造冶金半成品,特别是铝及其合金如锂合金,其目的是获得零厚度的皮质区,未经预先添加精炼剂的细粒和不存在倒钩 。

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