APPARATUS FOR RECOVERING LITHIUM HYDROXIDE

    公开(公告)号:US20250033985A1

    公开(公告)日:2025-01-30

    申请号:US18914888

    申请日:2024-10-14

    Abstract: The present invention relates to a method and arrangement for recovering lithium hydroxide from a mineral containing lithium, by pulping the raw material containing lithium in the presence of water and an alkali metal carbonate, leaching the obtained slurry twice, first at an elevated temperature, and secondly in an aqueous solution containing an alkali earth metal hydroxide, separating the thus obtained slurry into solids and a solution containing lithium hydroxide, the latter being purified, whereby lithium hydroxide monohydrate can be recovered from the purified solution by 10 crystallising, and finally separating the solution obtained during the crystallization from the process and recycling it to one or more of the previous process steps.

    APPARATUS FOR RECOVERING LITHIUM HYDROXIDE

    公开(公告)号:US20220185686A1

    公开(公告)日:2022-06-16

    申请号:US17683422

    申请日:2022-03-01

    Abstract: An arrangement for recovering lithium hydroxide from a mineral containing lithium, by pulping the raw material containing lithium in the presence of water and an alkali metal carbonate, leaching the obtained slurry twice, first at an elevated temperature, and secondly in an aqueous solution containing an alkali earth metal hydroxide, separating the thus obtained slurry into solids and a solution containing lithium hydroxide, the latter being purified, whereby lithium hydroxide monohydrate can be recovered from the purified solution by crystallising, and finally separating the solution obtained during the crystallization from the process and recycling it to one or more of the previous process steps.

    Water softener regeneration
    5.
    发明授权
    Water softener regeneration 有权
    水软化剂再生

    公开(公告)号:US08663476B2

    公开(公告)日:2014-03-04

    申请号:US12365856

    申请日:2009-02-04

    Applicant: Francis Boodoo

    Inventor: Francis Boodoo

    Abstract: A new process for ion exchange softening of water used in Once-Through Steam Generators (OTSGs) by recovering and using the salt content of the blowdown water from the OTSG to regenerate the softener resin is provided, thus eliminating the cost for commercial regenerant salt that would otherwise be needed. Further, the very high purity of the salt recovered in the blowdown inherently results in the production of softened water with hardness leakage levels that are an order of magnitude lower than can be attained using commercial salt, thus reducing scale deposit potential and improving operating efficiency and reliability of the OTSG.

    Abstract translation: 提供了一种通过回收和使用来自OTSG的排污水的盐含量来再生软化剂树脂的用于一次通过蒸汽发生器(OTSG)中的水的离子交换软化的新方法,从而消除了商业再生盐的成本, 否则将需要。 此外,在排污中回收的盐的非常高的纯度固有地导致软化水的生产,其硬度泄漏水平比使用商业盐可以获得的量级低一个数量级,从而降低沉积潜力并提高操作效率, OTSG的可靠性。

    Enantioselective cation-exchange materials
    10.
    发明申请
    Enantioselective cation-exchange materials 失效
    对映选择性阳离子交换材料

    公开(公告)号:US20050131087A1

    公开(公告)日:2005-06-16

    申请号:US10503689

    申请日:2003-02-14

    CPC classification number: B01J39/17 B01J39/05

    Abstract: The present invention relates to an enantioselective cation-exchange material, comprising a chiral selector (1), composed of a chiral component (2) and at least one cation-exchange group (X), a spacer (3) and a carrier (4). The cation-exchange material is characterized in that the chiral component (2) has a molecular weight of less than 1,000 and the at least one cation-exchange group (X) is an acid group having a pKa

    Abstract translation: 本发明涉及一种对映选择性阳离子交换材料,其包括由手性组分(2)和至少一个阳离子交换基团(X),间隔物(3)和载体(4)组成的手性选择剂(1) )。 阳离子交换材料的特征在于手性组分(2)的分子量小于1,000,并且至少一个阳离子交换基团(X)是pKa <4.0的酸基团。

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