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    COMPOSITE CEMENT WITH IMPROVED REACTIVITY AND METHOD FOR MANUFACTURING IT
    6.
    发明申请
    COMPOSITE CEMENT WITH IMPROVED REACTIVITY AND METHOD FOR MANUFACTURING IT 有权

    公开(公告)号：US20220340488A1

    公开(公告)日：2022-10-27

    申请号：US17728132

    申请日：2022-04-25

    申请人： HConnect 2 GmbH

    发明人： Frank BULLERJAHN ,  Sigum Kjaer BREMSETH ,  Kjell SKJEGGERUD ,  Wolfgang DIENEMANN

    IPC分类号： C04B14/14 ,  C04B28/16 ,  C04B14/28 ,  C04B40/00

    摘要： Composite cement with improved reactivity and improved fresh properties comprising a hydraulic cement or a caustic activator, a hyaloclastite as pozzolan containing 45-62 wt.-% SiO2, 10-20 wt.% Al2O3, 6-15 wt.-% Fe2O3, 7-15 wt.-% CaO, 7-15 wt.-% MgO, 1.5-4 wt.% (K2O+Na2O), and having 0-5 wt.-% loss on ignition at 950° C. and ≥50 wt.-% X-ray amorphous phase, and a carbonate filler with an at least bimodal particle size distribution adapted to provide a slope n in a Rosin-Rammler-Sperling-Bennett distribution curve of ≤1.15 in a particle size distribution of the composite cement; a method for manufacturing it, as well as use of a composition comprising the hyaloclastite as pozzolan and the carbonate filler as mineral addition for composite cements comprising a hydraulic cement or a caustic activator.

    Process for improving fly ash quality, improved fly ash, and cementitious compositions containing improved fly ash
    7.
    发明授权
    Process for improving fly ash quality, improved fly ash, and cementitious compositions containing improved fly ash 有权

    公开(公告)号：US11472737B1

    公开(公告)日：2022-10-18

    申请号：US17185112

    申请日：2021-02-25

    申请人： ROMAN CEMENT, LLC

    发明人： John M. Guynn

    IPC分类号： C04B18/08 ,  C04B14/14 ,  C04B22/14 ,  C04B40/00 ,  C04B28/04 ,  C04B22/06

    摘要： A non-conforming (or barely conforming) fly ash is converted into conforming (or better conforming) fly ash by: (1) obtaining an initial fly ash with at least one non-conforming (or barely conforming) characteristic selected from excess carbon content, low strength activity index, or low SAF as defined by ASTM C-618 and having a D10, D50 and D90; (2) classifying the initial fly ash using one or more air classifiers to produce at least two separate fly ash streams, including fine fly ash and coarse fly ash; (3) collecting the fine fly ash and the coarse fly ash, the fine fly ash having a D90 less than the D90 of the initial fly ash; (4) combining the fine fly ash with an aluminosilicate source to form a modified fly ash having a conforming carbon content, a conforming reactivity index, and a conforming SAF as defined by ASTM C-618.

    DEVICE FOR PRODUCING EXPANDED MINERAL GRANULATED MATERIAL
    9.
    发明申请
    DEVICE FOR PRODUCING EXPANDED MINERAL GRANULATED MATERIAL 有权

    公开(公告)号：US20210396471A1

    公开(公告)日：2021-12-23

    申请号：US17052288

    申请日：2019-04-29

    申请人： Johannes Pohl

    发明人： Johannes Pohl

    IPC分类号： F27B9/24 ,  F27D3/18 ,  C04B14/14 ,  C04B20/06

    摘要： An apparatus for producing a bloated mineral granulate with a heated processing channel (1) for the mineral granulate fed to a conveying flow (13), wherein an inflow opening (4) is provided in the processing channel (1) for forming a granulate-free laminar flow (5) running along the inner wall of the processing channel, is described.
    In order to design a device of the type described above in such a way that a continuous, qualitatively controllable production process is achieved, it is proposed in that the processing channel (1) comprises two channel sections (16), (17) with differing cross-sections, wherein the channel section (16) with a smaller cross-section projects into the channel section (17) with a larger cross-section, forming the inflow opening (4), and wherein the channel section (16) with a smaller cross-section is enclosed by the channel section (17) with a larger cross-section in such a way that an inflow opening (4) is formed completely around the projecting region of the channel section (16) with a smaller cross-section.

    POZZOLANIC COMPOSITIONS CONTAINING COAL ASH AND REMEDIATION AGENTS FOR USE IN CEMENTITIOUS MATERIALS
    10.
    发明申请
    POZZOLANIC COMPOSITIONS CONTAINING COAL ASH AND REMEDIATION AGENTS FOR USE IN CEMENTITIOUS MATERIALS 有权

    公开(公告)号：US20210147292A1

    公开(公告)日：2021-05-20

    申请号：US17158172

    申请日：2021-01-26

    申请人： CR Minerals Company, LLC

    发明人： Joseph Earl THOMAS ,  Richard Douglas CARTER ,  Jeffrey Alexander WHIDDEN

    IPC分类号： C04B18/08 ,  C04B28/02 ,  C04B40/00 ,  C04B14/14 ,  C04B18/14

    摘要： It has been unexpectedly discovered that the addition of a natural or other pozzolan to non-spec coal ash significantly improves the properties of the non-spec coal ash to the extent it can be certified under ASTM C618 and AASHTO 295, as either a Class F or Class C coal ash. The natural pozzolan may be a volcanic ejecta, such as pumice or perlite. Other pozzolans may also be used for this beneficiation process. Many pozzolans are experimentally tested and may be used to beneficiate non-spec coal ash into certifiable Class F coal ash. Additionally, this disclosure provides a method of converting a Class C coal ash to a more valuable Class F coal ash. This discovery will extend diminishing Class F coal ash supplies and turn non-spec coal ash waste streams into valuable, certified coal ash pozzolan which will protect and enhance concrete, mortars and grouts.