中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

5 records (took 0.01 seconds)

    Silica products from geothermal fluids by reverse osmosis
    3.
    发明授权
    Silica products from geothermal fluids by reverse osmosis 有权

    公开(公告)号：US11198095B2

    公开(公告)日：2021-12-14

    申请号：US15313849

    申请日：2015-05-22

    Applicant: GEO40 LIMITED

    Inventor： Andrew W. Mitchelmore ,  Richard A. Simonis ,  Michael T. O'Sullivan

    IPC: B01D61/02 ,  B01D61/04 ,  C02F1/44 ,  C02F1/66 ,  C01B33/12 ,  B01D61/14 ,  C01B33/14 ,  C02F101/10 ,  C02F103/06

    Abstract: The invention concerns a method and apparatus for producing silica concentrates from geothermal fluids containing at least 300 ppm silica, by passing the fluid at a temperature above 80° C. and at a pH reduced to between 4.0 and 7.5 through a reverse osmosis membrane. In the diagram, geothermal fluid (I) is passed to a separator (2) to be flashed to produce steam (3) and separated geothermal water (SGW) (4). The SGW (4) is passed to a heat exchanger (5) then inlet pump (7). Acid is introduced to the geothermal fluid flow at a dosing means (6) to reduce the pH and an anti-sealant may also be introduced. The geothermal fluid is then passed to a reverse osmosis unit (8) to produce a concentrate (9) and a permeate (10). Following reverse osmosis, the concentrate and permeate may be treated with other processes to produce the desired product and concentration. For example, if precipitated silica is produced, the concentrate is passed to a curing tank (11) and to a thickener (12). The precipitated silica is collected (13) while the retained fluid is removed (14).

    Process and System for Lithium Extraction
    4.
    发明申请
    Process and System for Lithium Extraction 有权

    公开(公告)号：US20240367152A1

    公开(公告)日：2024-11-07

    申请号：US18567715

    申请日：2022-06-10

    Applicant: Geo40 Limited

    Inventor： Campbell McNicoll ,  Michael T. O'Sullivan ,  William L. Bourcier

    IPC: B01J20/34 ,  B01D15/20 ,  B01J20/06 ,  C22B3/02 ,  C22B3/24 ,  C22B26/12

    Abstract: The present disclosure provides a process for recycling sorbent used in a process for extracting lithium from an aqueous solution containing lithium. The process may comprise bringing an aqueous solution containing lithium into contact with a hydrogen manganese oxide sorbent to absorb the lithium to produce a lithium loaded sorbent and lithium depleted solution, separating the lithium loaded sorbent and the lithium depleted solution, bringing the lithium loaded sorbent into contact with an acid to produce a lithium rich liquor and regenerated sorbent, separating the lithium rich liquor and the regenerated sorbent, treating the separated lithium rich liquor with a carbonate and/or hydroxide to precipitate manganese carbonate and/or manganese hydroxide, separating precipitated manganese carbonate and/or manganese hydroxide from the lithium rich liquor, and heating the manganese carbonate and/or manganese hydroxide with a source of lithium to produce a regenerated lithium loaded sorbent which is reused in the process. The disclosure also provides a system for recycling sorbent used in a process for extracting lithium from an aqueous solution containing lithium.

Patent Agency Ranking