| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 21 | INSULATING MINERAL FOAM | US14390713 | 2013-04-05 | US20150083958A1 | 2015-03-26 | Sébastien Bernardi; Isabelle Javierre; Sylvain Duchand; Serge Sabio; Cédric Roy |
| A process for producing a mineral foam includes (i) separately preparing one or more slurries of cement, and an aqueous foam for which a D50 of bubbles is less than or equal to 400 μm; (ii) homogenizing the one or more slurries of cement with the aqueous foam to obtain a slurry of foamed cement; (iii) casting the slurry of foamed cement and leaving the cast slurry of foamed cement to set. | ||||||
| 22 | Process for the physiochemical conditioning of chemical gypsum or phospho-gypsum for use in formulation for cement and other construction materials | US11786220 | 2007-04-11 | US20080003174A1 | 2008-01-03 | Miriam Elena Andara Giannotti; Jose R. Rus Romero; Carlos Dipasquale Torres; Morvin Ascanio Lopez; Jose Oropeza; Juan Carlos Suarez |
| The present invention concerns the application of a novel process for the physical and chemical conditioning of chemical gypsum or phospho gypsum, derived from the production of phosphoric acid, and its use as a retarding agent in the setting of Portland type cements or in the preparation of other construction materials. This conditioning is based on solid-state reactions or reactions in the presence of small amounts of water, between phospho gypsum and agglutinating-neutralizing agents, principally through the application of oxy and hydroxy compounds, without discounting use of the respective carbonates of magnesium, aluminum and principally calcium, in addition to mixtures of these, and the subsequent preparation of self-hardening pellets which facilitate transport and handling.The technological process associated with the invention notably simplifies the number and type of individual operations, and the preparation of pellets from mixtures of phospho gypsum, in addition to reducing energy costs by operating at low temperatures (150° C.) during short periods (1-2 hours), reducing the quantity of neutralizing agents, and also minimizing the volume of water required for the process. | ||||||
| 23 | FGD gypsum dewatering improvement through crystal habit modification by carboxylic acids | US10359716 | 2003-02-07 | US20030175193A1 | 2003-09-18 | Anders Nimgaard Schultz; Peter Bo Olsen |
| A flue gas desulfurization process is disclosed. Specifically the use of carboxylic acids to modify gypsum crystal habit in limestone forced oxidation. The technique is also applicable to other technologies where gypsum is produced as for example in phosphate fertilizer or paper industry. | ||||||
| 24 | Process for producing highly reactive lime in a furnace | US899576 | 1997-07-24 | US6146607A | 2000-11-14 | Lloyd L. Lavely, Jr. |
| A limestone furnace calcination process involves injecting finely divided limestone particles into a zone in a furnace at which the temperature of the flue gas stream, as it passes through the zone, is above the minimum calcination temperature and below the minimum effective quicklime utilization/sulfation temperature. In conventional furnaces, the minimum calcination temperature, or the calcium carbonate decomposition temperature, ranges from about 1,365 to 1,430.degree. F. The minimum effective quicklime utilization/sulfation temperature refers to the temperature below which the rate of quicklime sulfation of the lime produced by calcination of the limestone is sufficiently slow to result in negligible calcium sulfate formation on the resultant lime, and in conventional furnace applications ranges from 1,600 to 1,800.degree. F. The zone is preferably sized such that limestone particles injected therein will remain at a temperature above the minimum calcination temperature, as the particles are carried downstream, for a period sufficient for substantially complete calcination of the limestone particles to lime while minimizing reactions between the resultant lime particles and sulfur dioxide to form calcium sulfate while the particles are in the furnace and to minimize sintering of the lime and complex calcium compound formation. The resultant lime particles may then be utilized in conventional downstream flue gas desulfurization processes including wet and semi-dry processes. | ||||||
| 25 | Surfactant-coated hemihydrate gypsum and production method thereof | US14234602 | 2012-08-21 | US08940091B2 | 2015-01-27 | Shingo Hiranaka; Hiroyoshi Kato |
| Surfactant-coated hemihydrate gypsum which is coated with 0.01 to 1 part by weight of a surfactant based on 100 parts by weight of hemihydrate gypsum, wherein the residual rate of the surfactant when the surfactant-coated hemihydrate gypsum is heated up to 300° C. is not less than 40 wt % of the amount of the surfactant before heating. | ||||||
| 26 | Cementitious compositions and related systems and methods | US13720467 | 2012-12-19 | US08529689B2 | 2013-09-10 | David A. Lisowski; John R. Miglautsch |
| Provided are cementitious compositions and related systems and methods. The cementitious compositions, or admixtures, according to the present invention generally comprise gypsum, a first alkaline component and glass. The admixture may further comprise fly ash, which is preferably obtained as a waste by-product from a coal-burning power plant. A method according to the present invention comprises an initial step of analyzing or receiving an analysis of a fly ash sample. Based at least in part on the analysis of the fly ash sample, a mix rate may be selected and an initial admixture can be formulated, which, when added to the fly ash sample, creates an alternative or additive to Portland cement for use in concrete, for example. | ||||||
| 27 | Cementitious compositions and related systems and methods | US12589272 | 2009-10-21 | US08377197B2 | 2013-02-19 | David A. Lisowksi; John R. Miglautsch |
| Provided are cementitious compositions and related systems and methods. The cementitious compositions, or admixtures, according to the present invention generally comprise gypsum, a first alkaline component and glass. The admixture may further comprise fly ash, which is preferably obtained as a waste by-product from a coal-burning power plant. A method according to the present invention comprises an initial step of analyzing or receiving an analysis of a fly ash sample. Based at least in part on the analysis of the fly ash sample, a mix rate may be selected and an initial admixture can be formulated, which, when added to the fly ash sample, creates an alternative or additive to Portland cement for use in concrete, for example. | ||||||
| 28 | Cementitious compositions and related systems and methods | US12589272 | 2009-10-21 | US20110088598A1 | 2011-04-21 | David A. Lisowski; John R. Miglautsch |
| Provided are cementitious compositions and related systems and methods. The cementitious compositions, or admixtures, according to the present invention generally comprise gypsum, a first alkaline component and glass. The admixture may further comprise fly ash, which is preferably obtained as a waste by-product from a coal-burning power plant. A method according to the present invention comprises an initial step of analyzing or receiving an analysis of a fly ash sample. Based at least in part on the analysis of the fly ash sample, a mix rate may be selected and an initial admixture can be formulated, which, when added to the fly ash sample, creates an alternative or additive to Portland cement for use in concrete, for example. | ||||||
| 29 | GYPSUM STABILISATION METHOD | US12530999 | 2009-03-07 | US20100111821A1 | 2010-05-06 | Esther Álvarez Ayuso; Javier Querol Carceller; Juan Carlos Ballesteros Aparicio; Antonio Jiménez Alonso; Alfedro Tomas Tello |
| The invention relates to a method for reducing or eliminating the soluble content of pollutants in gypsum or in compounds containing gypsum, wherein the gypsum or gypsum-containing compound is mixed with additives that contain or can generate aluminium oxide. More specifically, the gypsum originates from gas desulphurisation and the pollutant is fluorine. | ||||||
| 30 | Process for the physiochemical conditioning of chemical gypsum or phospho-gypsum for use in formulation for cement and other construction materials | US11786220 | 2007-04-11 | US07585485B2 | 2009-09-08 | Miram Elena Andara Giannotti; José R. Rus Romero; Carlos Di Pasquale Torres; Morvin Ascanio Lopez; José Oropeza; Juan Carlos Suárez |
| The present invention is based on solid-state reaction or reactions in the presence of small amounts of water, between phospho gypsum and agglutinating-neutralizing agents, principally though the application of oxy and hydroxy compounds, without discounting use of the respective carbonates of magnesium, aluminum and principally calcium, in addition to mixtures of these, and the subsequent preparation of self-hardening pellets which facilitate transport and handling. The technological process associated with the invention notably simplifies both the number and type of individual operations, and the preparation of pellets from mixtures of phosphor gypsum; it also reduces energy costs by operating at low temperatures (150°C.) during short periods (1-2 hours), while reducing the quantity of neutralizing agents, and minimizing the volume of water required for the process. | ||||||
| 31 | The usage of fly ash from flue gas desulfurization to make compositions for building | US15668651 | 2017-08-03 | US20180037499A1 | 2018-02-08 | CHIN-TIEN LIEN; CHIEN-FAN LIEN |
| Composition for building materials comprises of fly ash from flue gas desulfurization. The fly ash (βCaSO4 anhydrite), obtained from circulating fluidized bed flue gas desulfurization, is mixed with binder reactants at a ratio of 9:1. It's mainly used for non-structural cement mortar, bricks for paving walkways, brick wall decors, fire-resistant walls for interior partitions, plasterboards and so on. The binder reactants compose of 70% CaSO4.½H2O, 10% Na2SO4, 10% CaO, 5% NaOH, 0˜5% cement and 0˜5% starch. When the binder reactants are mixed with fly ash and water (30% to 40% of the above total weight), the hydration process of CaSO4 anhydrite is accelerated. | ||||||
| 32 | SURFACTANT-COATED HEMIHYDRATE GYPSUM AND PRODUCTION METHOD THEREOF | US14234602 | 2012-08-21 | US20140150693A1 | 2014-06-05 | Shingo Hiranaka; Hiroyoshi Kato |
| Surfactant-coated hemihydrate gypsum which is coated with 0.01 to 1 part by weight of a surfactant based on 100 parts by weight of hemihydrate gypsum, wherein the residual rate of the surfactant when the surfactant-coated hemihydrate gypsum is heated up to 300° C. is not less than 40 wt % of the amount of the surfactant before heating. | ||||||
| 33 | Cementitious Compositions and Related Systems and Methods | US13720467 | 2012-12-19 | US20130104778A1 | 2013-05-02 | David A. Lisowski; John R. Miglautsch |
| Provided are cementitious compositions and related systems and methods. The cementitious compositions, or admixtures, according to the present invention generally comprise gypsum, a first alkaline component and glass. The admixture may further comprise fly ash, which is preferably obtained as a waste by-product from a coal-burning power plant. A method according to the present invention comprises an initial step of analyzing or receiving an analysis of a fly ash sample. Based at least in part on the analysis of the fly ash sample, a mix rate may be selected and an initial admixture can be formulated, which, when added to the fly ash sample, creates an alternative or additive to Portland cement for use in concrete, for example. | ||||||
| 34 | Activated carbon as mercury release control agent in gypsum calcination | US11937844 | 2007-11-09 | US07507287B1 | 2009-03-24 | Wenqi Luan |
| A method for providing effective mercury release control during gypsum calcination is disclosed. The method comprises providing a reactor and gypsum containing mercury; providing a mercury sorbent, such as activated carbon and/or derivatives thereof in the reactor; and calcining the gypsum in the reactor to form stucco. The mercury contaminant present in the gypsum is sorbed by the mercury sorbent during the calcination process. The mercury content of the stucco is substantially similar in amount to the mercury content of the uncalcined gypsum. | ||||||
| 35 | Furnace adapted to produce lime for use in downstream flue gas desulfurization process | US09638694 | 2000-08-14 | US06391266B1 | 2002-05-21 | Lloyd L. Lavely, Jr. |
| A limestone furnace calcination process involves injecting finely divided limestone particles into a zone in a furnace at which the temperature of the flue gas stream, as it passes through the zone, is above the minimum calcination temperature and below the minimum effective quicklime utilization/sulfation temperature. In conventional furnaces, the minimum calcination temperature, or the calcium carbonate decomposition temperature, ranges from about 1,365 to 1,430° F. The minimum effective quicklime utilization/sulfation temperature refers to the temperature below which the rate of quicklime sulfation of the lime produced by calcination of the limestone is sufficiently slow to result in negligible calcium sulfate formation on the resultant lime, and in conventional furnace applications ranges from 1,600 to 1,800° F. The zone is preferably sized such that limestone particles injected therein will remain at a temperature above the minimum calcination temperature, as the particles are carried downstream, for a period sufficient for substantially complete calcination of the limestone particles to lime while minimizing reactions between the resultant lime particles and sulfur dioxide to form calcium sulfate while the particles are in the furnace and to minimize sintering of the lime and complex calcium compound formation. The resultant lime particles may then be utilized in conventional downstream flue gas desulfurization processes including wet and semi-dry processes. | ||||||
| 36 | 界面活性剤被覆半水石膏およびその製造方法 | JP2013532540 | 2012-08-21 | JP5948334B2 | 2016-07-06 | 平中 晋吾; 加藤 弘義 |
| 37 | Recovery method of gypsum | JP2006259806 | 2006-09-25 | JP2008080184A | 2008-04-10 | FUKUSHIMA SHIGERU; SUMIMORI MICHITO; FUJISAWA HIROYUKI |
| <P>PROBLEM TO BE SOLVED: To provide a recovery method of coarse particulate gypsum with little magnesium content from flue gas desulfurization slurry having a large magnesium content. <P>SOLUTION: This recovery method of coarse particulate gypsum with little magnesium content comprises processes for: settling magnesium hydroxide and gypsum in a strong alkaline state by adding an excessive amount of slaked lime to liquid obtained from desulfurization slurry subjected to solid-liquid separation; dissolving magnesium hydroxide as magnesium sulfate by adding sulfuric acid to solid-liquid slurry obtained by separating the supernatant for neutralization; and recovering solid matter (gypsum) by separating the magnesium sulfate solution. Preferably, slaked lime is added in the settling process to make pH in a reactor ≥11, and sulfuric acid is added in the dissolving process for neutralization to make pH of the solid slurry about 7. <P>COPYRIGHT: (C)2008,JPO&INPIT | ||||||
| 38 | Waste gypsum composition | JP2006218439 | 2006-08-10 | JP2008037734A | 2008-02-21 | JO YASUICHI |
| PROBLEM TO BE SOLVED: To provide a raw material composition which enables easy handling and feeding of a crushed waste gypsum board to manufacturing facilities such as cement manufacturing facilities and suppresses the formation of dust at handling, without requiring installation of a hermetic transport machinery or a hermetic receiving facility. SOLUTION: The composition comprises the crushed waste gypsum board, water and a polar organic liquid whose boiling point is higher than that of water, e.g. a polyhydric alcohol, provided that the total content of water and the organic liquid is 1-30 wt.%. The composition shows a good handleability and can be fed as a raw material in a cement manufacturing step or as a component in a clinker-crushing step. COPYRIGHT: (C)2008,JPO&INPIT | ||||||
| 39 | 界面活性剤被覆半水石膏およびその製造方法 | JP2013532540 | 2012-08-21 | JPWO2013035563A1 | 2015-03-23 | 晋吾 平中; 弘義 加藤 |
| 本発明は、半水石膏100重量部に対して0.01〜1重量部の被覆量で界面活性剤が被覆している界面活性剤被覆半水石膏であって、該界面活性剤被覆半水石膏を300℃まで加熱したときの界面活性剤の残存割合が加熱前の40重量%以上であることを特徴とする、前記界面活性剤被覆半水石膏に関する。 | ||||||
| 40 | Activated carbon as a mercury release suppression material at the time of gypsum firing | JP2010533177 | 2008-10-31 | JP2011504160A | 2011-02-03 | ルアン，ウェンキ |
| 石膏焼成時における効果的な水銀放出抑制方法を開示する。 この方法は、水銀を含む石膏および焼成リアクターを用意し、活性炭および／またはその誘導体である水銀吸着材をリアクターに入れ、リアクター内で石膏を焼成してスタッコを形成する、の工程で構成される。 石膏に含有していた水銀は、焼成プロセスで水銀吸着材に吸着される。 スタッコの水銀含有量は、焼成前石膏の水銀含有量と実質的に同じである。
【選択図】図１ |
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