SINGLE-STEP LOW-TEMPERATURE CALCIUM CARBONATE PRODUCTION THROUGH CARBON DIOXIDE SEQUESTRATION OF MINERAL MATERIALS TO MAKE CONCRETE

    公开(公告)号:US20230257276A1

    公开(公告)日:2023-08-17

    申请号:US18171164

    申请日:2023-02-17

    Applicant: CarbonBuilt

    Inventor: Iman Mehdipour

    CPC classification number: C01F11/182 C01F11/181 C01P2004/51 C01P2002/70

    Abstract: The disclosure herein sets forth processes and compositions for producing carbonated materials comprising calcium carbonates through a mechanochemical process. The present disclosure concerns the production of calcium carbonate by sequestrating CO2. Certain processes herein include providing alkaline-rich mineral materials that include carbonatable solid wastes such as lime kiln dust, cement kiln dust, and coal combustion residues, and simultaneously fractioning the alkaline-rich mineral materials, while contacting the alkaline-rich mineral materials with a CO2-containing gas in carbonation reactor at low temperature and ambient pressure. In some embodiments, the alkaline-rich mineral materials are partially carbonated before being used in the processes disclosed herein. After contacting the alkaline-rich mineral materials with a CO2-containing gas in carbonation reactor at low temperature and ambient pressure, solid calcium carbonate is produced. In aqueous reactors, the solid calcium carbonate is filtered from a solution in which it precipitated, and the remaining solution includes hydroxide as well as alkaline metal ions. The solution filtered from the solid calcium carbonate can be sequentially contacted with a CO2-containing gas stream to precipitate additional calcium carbonate. The carbonated materials formed from these processes can be used in the form of a slurry, as a moist powder, as a dried powder, as a reactive filler or as a supplementary cementitious material in a mixture that is used to make concrete.

    METHOD FOR PRODUCING LITHIUM HALIDE COMPOUND

    公开(公告)号:US20230242408A1

    公开(公告)日:2023-08-03

    申请号:US17927765

    申请日:2021-05-20

    CPC classification number: C01D15/04 C01P2002/70 C01P2004/03

    Abstract: The present invention relates to a method for producing a lithium halide compound, capable of industrially advantageously producing a lithium halide compound having a low water content, particularly lithium bromide and lithium iodide, at a high reaction efficiency without accompanying a step of directly removing water, and the method including mixing lithium sulfide, a halogen molecule of at least one of bromine and iodine, and a first solvent; and removing the first solvent, wherein the first solvent is a solvent that dissolves a lithium halide containing the same halogen element as the halogen molecule.

    Tungsten oxide-based material
    10.
    发明授权

    公开(公告)号:US11655160B2

    公开(公告)日:2023-05-23

    申请号:US16610570

    申请日:2018-02-02

    CPC classification number: C01G41/006 C01P2002/54 C01P2002/70

    Abstract: A material of Formula (I) is provided

    MyTxQvW1-vOz-tJt  (I)

    where:

    T represents one of tin, lead, antimony and germanium, T being present in the interstitial spaces or voids of the lattice,

    M represents one or more species, each selected from the group consisting of (i) metals other than T, and (ii) polyatomic ionic species, said polyatomic species having an ionic radius of no more than 2 Å, M being present in the interstitial spaces or voids of the lattice,

    W is tungsten,

    O is oxygen,

    Q represents one or more element having an oxidation state of at least +4, Q, if present, occupying a lattice point of W,

    J represents one or more non-metallic element anion of chemical valence −1, J, if present, occupying a lattice point of O,

    v is from 0 to 1.0, t is from 0 to 3.0, y is non-zero and up to and including 0.32, x is non-zero and up to and including 0.32, and z is from 2.5 to 4, provided that x+y≤0.33.

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