JP4848357B2 - 石膏焼成装置等のための揺動攪拌器 - Google Patents
石膏焼成装置等のための揺動攪拌器 Download PDFInfo
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- 229910052602 gypsum Inorganic materials 0.000 title claims description 75
- 239000010440 gypsum Substances 0.000 title claims description 75
- 238000003756 stirring Methods 0.000 claims description 42
- 238000013019 agitation Methods 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 23
- 238000005243 fluidization Methods 0.000 claims description 22
- 238000001816 cooling Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 16
- 238000012545 processing Methods 0.000 claims description 13
- 239000012530 fluid Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 230000005465 channeling Effects 0.000 claims description 3
- 238000001354 calcination Methods 0.000 claims 2
- 238000002156 mixing Methods 0.000 claims 1
- 239000000428 dust Substances 0.000 description 10
- 239000000446 fuel Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 239000002826 coolant Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000010304 firing Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
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- C—CHEMISTRY; METALLURGY
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B11/00—Calcium sulfate cements
- C04B11/02—Methods and apparatus for dehydrating gypsum
- C04B11/028—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained
- C04B11/0281—Kettles; Marmites; Autoclaves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/10—Mixing in containers not actuated to effect the mixing
- B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
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- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/44—Mixers with shaking, oscillating, or vibrating mechanisms with stirrers performing an oscillatory, vibratory or shaking movement
- B01F31/441—Mixers with shaking, oscillating, or vibrating mechanisms with stirrers performing an oscillatory, vibratory or shaking movement performing a rectilinear reciprocating movement
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
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- B01F35/93—Heating or cooling systems arranged inside the receptacle
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01J6/001—Calcining
- B01J6/004—Calcining using hot gas streams in which the material is moved
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/46—Arrangements for applying super- or sub-atmospheric pressure during mixing; Arrangements for cooling or heating during mixing, e.g. by introducing vapour
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- C—CHEMISTRY; METALLURGY
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- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
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- C01F11/46—Sulfates
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- C—CHEMISTRY; METALLURGY
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B11/00—Calcium sulfate cements
- C04B11/02—Methods and apparatus for dehydrating gypsum
- C04B11/028—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
- F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
- F26B3/084—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed with heat exchange taking place in the fluidised bed, e.g. combined direct and indirect heat exchange
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- F26—DRYING
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- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
- F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
- F26B3/092—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed agitating the fluidised bed, e.g. by vibrating or pulsating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
- F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
- F26B3/092—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed agitating the fluidised bed, e.g. by vibrating or pulsating
- F26B3/0923—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed agitating the fluidised bed, e.g. by vibrating or pulsating by mechanical means, e.g. vibrated plate, stirrer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B15/00—Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion
- F27B15/02—Details, accessories, or equipment peculiar to furnaces of these types
- F27B15/08—Arrangements of devices for charging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B15/00—Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion
- F27B15/02—Details, accessories, or equipment peculiar to furnaces of these types
- F27B15/09—Arrangements of devices for discharging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B15/00—Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion
- F27B15/02—Details, accessories, or equipment peculiar to furnaces of these types
- F27B15/10—Arrangements of air or gas supply devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B15/00—Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion
- F27B15/02—Details, accessories, or equipment peculiar to furnaces of these types
- F27B15/14—Arrangements of heating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0033—Heating elements or systems using burners
- F27D99/0035—Heating indirectly through a radiant surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/28—Mixing cement, mortar, clay, plaster or concrete ingredients
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Description
Claims (36)
- 底壁と、少なくとも1つの側壁とを有し、粉末石膏を受けて処理するように構成されて配置されたハウジングと、
流体を石膏系製品に対して供給するための流動化機構と、
ハウジングの断面と同様の形状の断面を有し、第1の位置と第2の位置との間で往復動するよう接続された攪拌器フレームを備える攪拌機構と、
を備え、
攪拌機構が、流動化された石膏製品がハウジングの底壁に隣接する支持ベースに沿って集まることを防止するようになっている、石膏処理装置。 - 攪拌機構が、攪拌器フレームが動作する際に支持ベースの近傍で石膏製品を攪拌するために攪拌器フレームに接続された複数の攪拌部材を含む、請求項1に記載の装置。
- 往復動が揺動である、請求項1に記載の装置。
- 攪拌機構が、攪拌器フレームを装置に接続するための少なくとも1つの回動可能な支持アームを含む、請求項1に記載の装置。
- 少なくとも1つの回動可能な支持アームが、その一端がハウジングの内部に回動可能に取り付けられ且つその他端が攪拌器フレームに取り付けられたケーブルであり、攪拌器フレームが、それに対して動きが与えられると、揺動するようになっている、請求項4に記載の装置。
- 攪拌機構が、攪拌器フレームを動かすための出力源を含む、請求項1に記載の装置。
- 出力源が、電動機及び電動エアーシリンダのうちの一方を含む、請求項6に記載の装置。
- ハウジングを貫通して延び、電動機と攪拌器フレームとの間の接続を行なうアクチュエータアームを更に備える、請求項7に記載の装置。
- 攪拌機構が、
アクチュエータアーム及びハウジングと係合して石膏製品がハウジングから漏れることを防止する拡張可能なシールを更に備える、請求項8に記載の装置。 - シールが、アクチュエータアームが第1の位置と第2の位置との間で移動するときに拡張及び収縮する、請求項9に記載の装置。
- アクチュエータアームが、攪拌機構を電動機に接続するためにハウジングの側壁とスライド可能に係合している、請求項8に記載の装置。
- 攪拌器フレームが、矩形断面を有するハウジングに対応している、請求項1に記載の装置。
- 攪拌器フレームが、円形断面を有するハウジングに対応している、請求項1に記載の装置。
- 攪拌器フレームが、石膏系製品を処理するように構成されて配置された任意の幾何学的断面の1つを有するハウジングに対応している、請求項1に記載の装置。
- プロセスが石膏の焼成を含む、請求項1に記載の装置。
- 装置が水噴射を利用する流動床スタッコ冷却器である、請求項1に記載の装置。
- 装置が冷却コイルを利用する流動床スタッコ冷却器である、請求項1に記載の装置。
- 底壁と、少なくとも1つの側壁とを有し、石膏系製品を受けて処理するように構成されて配置されたハウジングを備え、
ハウジングの断面とほぼ同様の形状の断面を有し、第1の位置と第2の位置との間で往復動するよう接続された攪拌器フレームを備える攪拌機構を備え、攪拌機構が、流動化されていない石膏のデッドゾーン、流体チャネリングを防止するとともに、石膏製品がハウジングの底壁の近傍に集まることを防止するようになっており、
攪拌器フレームを装置に接続するための少なくとも1つの回動可能な支持アームを備え、少なくとも1つの回動可能な支持アームが、その一端がハウジングの内部に回動可能に取り付けられ且つその他端が攪拌器フレームに取り付けられたケーブルであり、攪拌器フレームが、それに対して動きが与えられると、揺動するようになっている、流動石膏処理装置。 - 攪拌機構が、攪拌器フレームが動作する際に底壁の近傍で石膏製品を攪拌するために攪拌器フレームに接続された複数の攪拌部材を含む、請求項18に記載の装置。
- 攪拌部材がクロスバーパターンを備える、請求項19に記載の装置。
- 攪拌機構が、攪拌器フレームを動かすための出力源を含む、請求項18に記載の装置。
- 出力源が、電動機及び空気圧アクチュエータのうちの一方を含む、請求項21に記載の装置。
- ハウジングを貫通して延び、出力源と攪拌器フレームとの間の接続を行なうアクチュエータアームを更に備える、請求項21に記載の装置。
- アクチュエータアームが、攪拌機構を出力源に接続するための複数の機械的なリンクを含む、請求項23に記載の装置。
- 攪拌機構が、
アクチュエータアーム及びハウジングと係合して石膏製品がハウジングから漏れることを防止する拡張可能なシールを更に備える、請求項23に記載の装置。 - シールが、アクチュエータアームが第1の位置と第2の位置との間で移動するときに拡張及び収縮する、請求項25に記載の装置。
- 攪拌器フレームの断面が、矩形断面を有するハウジングに対応している、請求項18に記載の装置。
- 攪拌器フレームの断面が、円形断面を有するハウジングに対応している、請求項18に記載の装置。
- 攪拌器フレームの断面が、石膏系製品を処理するように構成されて配置された任意の幾何学的断面の1つを有するハウジングに対応している、請求項18に記載の装置。
- プロセスが石膏の焼成を含む、請求項18に記載の装置。
- 装置が水噴射を利用する流動床スタッコ冷却器である、請求項18に記載の装置。
- 装置が冷却コイルを利用する流動床スタッコ冷却器である、請求項18に記載の装置。
- 石膏系材料を攪拌するための方法であって、
石膏材料を処理するための底壁を有するハウジングを設けるステップと、
供給源から装置へ材料を送るステップと、
材料を貫いて流体を流すことにより材料を流動化させるステップと、
底壁に隣接して第1の位置と第2の位置との間で移動可能な攪拌機構を用いて、流動化された材料を攪拌する攪拌ステップと、
を備える方法。 - ハウジングの底壁に沿って材料が凝固することを防止するステップを更に備える、請求項33に記載の方法。
- 攪拌ステップが、
混合部材を有する攪拌器フレームを流動化される媒体の近傍に位置させる工程と、
所定の経路に沿って繰り返し攪拌器フレームを動かす工程と、
を更に備える、請求項33に記載の方法。 - 材料の任意のデッドゾーンを除去するステップを更に備える、請求項33に記載の方法。
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US10/788,864 | 2004-02-27 | ||
US10/788,871 | 2004-02-27 | ||
US10/788,864 US7121713B2 (en) | 2004-02-27 | 2004-02-27 | Swinging agitator for a gypsum calcining apparatus and the like |
US10/788,871 US7175426B2 (en) | 2004-02-27 | 2004-02-27 | High efficiency refractoryless kettle |
PCT/US2005/004796 WO2005092583A1 (en) | 2004-02-27 | 2005-02-10 | Swinging agitator for a gypsum calcining apparatus and the like |
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JP2007526201A JP2007526201A (ja) | 2007-09-13 |
JP4848357B2 true JP4848357B2 (ja) | 2011-12-28 |
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JP2007500875A Expired - Fee Related JP4926939B2 (ja) | 2004-02-27 | 2005-02-10 | 高効率非耐火ケトル |
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US7434980B2 (en) * | 2004-02-27 | 2008-10-14 | United States Gypsum Company | Swinging agitator for a gypsum calcining apparatus and the like |
US7718019B2 (en) | 2005-04-27 | 2010-05-18 | United States Gypsum Company | Methods of and systems for preparing a heat resistant accelerant slurry and adding the accelerant slurry to a post-mixer aqueous dispersion of calcined gypsum |
US8016960B2 (en) | 2005-04-27 | 2011-09-13 | United States Gypsum Company | Methods of and systems for adding a high viscosity gypsum additive to a post-mixer aqueous dispersion of calcined gypsum |
UA103890C2 (uk) * | 2008-02-19 | 2013-12-10 | Юнайтед Стейтс Джипсум Компані | Спосіб та пристрій для кальцинування гіпсу під тиском |
JP5909568B2 (ja) * | 2014-02-17 | 2016-04-26 | 月島機械株式会社 | 流動層装置 |
MX2017010868A (es) * | 2015-02-25 | 2017-12-07 | Yoshino Gypsum Co | Aparato y metodo para calcinacion de yeso. |
EP3498680B1 (en) * | 2016-08-10 | 2021-01-13 | Yoshino Gypsum Co., Ltd. | Apparatus and method for treating gypsum |
EP3284723A1 (de) * | 2016-08-17 | 2018-02-21 | Claudius Peters Projects GmbH | Zweistufiges kalzinierverfahren sowie anlage hierfür |
CN106315654A (zh) * | 2016-08-25 | 2017-01-11 | 广西联壮科技股份有限公司 | 一种用于生产粗钡的烧后原料浸泡装置 |
RU2719155C1 (ru) * | 2019-03-13 | 2020-04-17 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Тамбовский государственный технический университет" (ФГБОУ ВО "ТГТУ") | Способ подачи жидкости в сушилку с кипящим слоем инертных тел и устройство для его осуществления |
CN111893292B (zh) * | 2020-07-31 | 2021-10-29 | 天能集团(河南)能源科技有限公司 | 一种铅酸蓄电池铸焊铅渣回收装置及方法 |
US11892236B2 (en) | 2020-09-30 | 2024-02-06 | Schenck Process Llc | System for conditioning stucco in a dust collector |
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