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1. 发明授权

EP0276077B1 A process for forming finely divided calcium sulphate 失效
标题翻译：形成精细分解硫酸钙的方法
公开(公告)号：EP0276077B1
公开(公告)日：1992-12-23
申请号：EP88300249.5
申请日：1988-01-13
申请人： ECC INTERNATIONAL LIMITED
发明人： Riley, Peter William , Jepson, Walter Brian
IPC分类号： C01F11/46
CPC分类号： C04B28/143 , C01F11/46 , C01P2004/61 , C01P2004/62 , C09C1/027 , C04B20/008 , C04B20/026

2. 发明公开

EP0169508A3 Building material from phosho-hemihydrate, process for its production and its use 失效
标题翻译：来自氢氧化镁的建筑材料及其生产工艺及其使用
公开(公告)号：EP0169508A3
公开(公告)日：1987-10-07
申请号：EP85109040
申请日：1985-07-19
申请人： Gebr. Knauf Westdeutsche Gipswerke KG
发明人： Wirsching, Franz, Dr.
IPC分类号： C04B28/14 , C04B18/08 , C04B22/00
CPC分类号： C04B28/143 , C04B11/26 , E01C7/12 , Y02W30/92 , C04B7/00 , C04B18/08 , C04B40/00 , C04B22/064

3. 发明公开

EP2235284A2 LOW FIBER CALCINATION PROCESS FOR MAKING GYPSUM FIBERBOARD 有权
标题翻译：纤臂煅烧用于生产石膏纤维面板
公开(公告)号：EP2235284A2
公开(公告)日：2010-10-06
申请号：EP08877206.6
申请日：2008-12-18
申请人： United States Gypsum Company
发明人： SKINNER, Marsha, S. , LANGE, Robert, G. , BLACKBURN, Douglas
IPC分类号： E04F15/022
CPC分类号： C04B28/141 , C04B11/032 , C04B28/143 , C04B28/144 , C04B28/146 , C04B2111/0062 , Y02W30/97 , C04B11/024 , C04B18/26 , C04B24/04 , C04B24/08 , C04B24/42 , C04B40/0064 , C04B40/0071 , C04B40/0263 , C04B2103/12 , C04B18/241 , C04B40/0028
摘要： An energy efficient method for making a gypsum cellulose fiberboard comprising adding a first portion of cellulose fiber to gypsum before the gypsum and cellulose fiber are co-calcined in a reactor, adding a second portion of cellulose fiber to the slurry after it leaves the reactor to form a second slurry, depositing the slurry to form a mat dewatering the mat, rehydrating the mat and then finishing the mat to form a final gypsum cellulose fiberboard. A reduction of up to about 40% to 50% of steam energy used can be achieved when the second portion of added cellulose fiber is 50% or more of the total cellulose fiber used in the final board compared to gypsum cellulose board made with the same ingredients but when all of the fiber is added to the gypsum prior to the reactor.

4. 发明公开

EP1876152A2 Process for physico-chemical adaptation of chemical gypsum or phosphogypsum for use in cement formulations and other construction materials 审中-公开
标题翻译：一种用于物理化学石膏或磷的调整在水泥配方和其他建筑材料中使用的方法
公开(公告)号：EP1876152A2
公开(公告)日：2008-01-09
申请号：EP07008619.4
申请日：2007-04-27
申请人： Tripoliven C.A. , Fundación Instituto de Ingeniería para Investigación y Desarrollo Tecnológico Carretera Nacional
发明人： Andara Giannotti, Miriam Elena Urbanizacion Ruis Pineda , Rus Romero, Jose R. , Torres, Carlos Di Pasquale , Ascanio Lopez, Morvin Urbanizacion Valles de Chara , Oropeza, Jose , Suarez, Juan Carlos
IPC分类号： C04B7/42 , C04B11/26 , C04B11/00
CPC分类号： C04B11/26 , C01F11/46 , C01P2004/50 , C04B7/424 , C04B11/005 , C04B18/02 , C04B22/144 , C04B28/143 , C04B2103/22 , C22B1/2406 , C04B20/02 , C04B20/023
摘要： The present invention relates to the application of a novel process for the chemical and physical adaptation of chemical gypsum or phosphogypsum coming from the production of phosphoric acid and its use as a setting retarding agent in Portland type cements or in the preparation of other materials for construction. The adaptation is based on reactions in the solid state or in the presence of small amounts of water between the phosphogypsum and the agglutinating-neutralising agents, primarily by the application of oxy- and hydroxy-compounds, without rejecting the respective carbonates, of magnesium, aluminium and mainly calcium carbonate, along with mixtures thereof and later preparation of self-hardening pellets which facilitate its transport and handling.
The technological process associated with the invention notably simplifies the number and type of unitary operations, and the preparation of pellets of mixtures of phosphogypsum, along with a reduction in energy costs due to operating at low temperatures (150 °C) for short times (1-2 hours) and a reduction in the quantities of neutralising agents, and it also minimise the volume of water required in the process.
摘要翻译：本发明涉及一种新颖的处理的应用，用于化学和化学石膏或磷石膏从生产磷酸及其作为波特兰类型阻燃剂的设定使用未来的物理自适应水泥或在建筑外的材料的制备，自适应是基于反应在固态或在磷石膏和凝集中性伊辛剂之间少量的水的存在下，主要通过氧基和羟基的化合物的应用，而不会拒绝respectivement碳酸盐，镁，铝和主要是碳酸钙，地连同其混合物和自硬化粒料便于其运输和处理的以后制备。与本发明相关的技术方法显着简化的数量和整体操作的类型，和磷石膏的混合物的粒料的制备方法，在能源成本的降低沿由于在低温（150℃）短的时间操作（1 1-2小时），并在中性伊辛剂的量的减少，并且因此它最小化的过程中所需的水的体积。

5. 发明授权

EP2235284B1 LOW FIBER CALCINATION PROCESS FOR MAKING GYPSUM FIBERBOARD 有权
公开(公告)号：EP2235284B1
公开(公告)日：2018-10-17
申请号：EP08877206.6
申请日：2008-12-18
申请人： United States Gypsum Company
发明人： SKINNER, Marsha, S. , LANGE, Robert, G. , BLACKBURN, Douglas
IPC分类号： C04B28/14 , C04B11/032 , C04B111/00
CPC分类号： C04B28/141 , C04B11/032 , C04B28/143 , C04B28/144 , C04B28/146 , C04B2111/0062 , Y02W30/97 , C04B11/024 , C04B18/26 , C04B24/04 , C04B24/08 , C04B24/42 , C04B40/0064 , C04B40/0071 , C04B40/0263 , C04B2103/12 , C04B18/241 , C04B40/0028
摘要： An energy efficient method for making a gypsum cellulose fiberboard comprising adding a first portion of cellulose fiber to gypsum before the gypsum and cellulose fiber are co-calcined in a reactor, adding a second portion of cellulose fiber to the slurry after it leaves the reactor to form a second slurry, depositing the slurry to form a mat, dewatering the mat, rehydrating the mat and then finishing the mat to form a final gypsum cellulose fiberboard. A reduction of up to about 40% to 50% of steam energy used can be achieved when the second portion of added cellulose fiber is 50% or more of the total cellulose fiber used in the final board compared to gypsum cellulose board made with the same ingredients but when all of the fiber is added to the gypsum prior to the reactor.

6. 发明授权

EP0064793B1 Verfahren zur Herstellung von Gipsformsteinen 失效
标题翻译：制造模压石棉的工艺
公开(公告)号：EP0064793B1
公开(公告)日：1985-11-06
申请号：EP82200539.3
申请日：1982-05-04
申请人： RUHR-STICKSTOFF AKTIENGESELLSCHAFT
发明人： Kurandt, Hans-Friedrich, Dr.
IPC分类号： C04B28/14 , C04B11/26
CPC分类号： C04B28/143 , C04B22/064 , C04B40/0071 , C04B22/066

7. 发明公开

EP3317233A1 GYPSUM COMPOSITIONS CONTAINING CROSSLINKED CELLULOSE ETHERS FOR MORTARS WITH REDUCED STICKINESS 有权
标题翻译：含有交联纤维素醚的石膏组合物用于粘性降低的砂浆
公开(公告)号：EP3317233A1
公开(公告)日：2018-05-09
申请号：EP16738335.5
申请日：2016-06-29
申请人： Dow Global Technologies LLC
发明人： BRECKWOLDT, Joern , HILD, Alexandra , WAGNER, Anette
IPC分类号： C04B28/14
CPC分类号： C04B28/143 , C04B24/386 , C04B28/14 , C04B2103/20 , C04B2111/00482 , C04B2111/00637 , C04B24/383 , C04B40/0608 , C04B2103/22
摘要： The present invention provides dry mix compositions for use in making gypsum plasters or mortars comprising gypsum, preferably, phosphorous gypsum one or more retarder, and one or more crosslinked cellulose ethers containing polyether groups. The compositions enable the provision of gypsum dry mixes, such as those from phosphorus gypsum, that make gypsum mortars with less stickiness while reducing the amount of cellulose ether in the dry mix.

8. 发明授权

EP0169508B1 Baustoff aus Phospho-Hemihydrat, Verfahren zu seiner Herstellung und seine Verwendung 失效
标题翻译：来自氢氧化镁的建筑材料及其生产工艺及其使用
公开(公告)号：EP0169508B1
公开(公告)日：1990-02-07
申请号：EP85109040.7
申请日：1985-07-19
申请人： B.V. Projectbureau voor Industrieel Afval, P.B.I.
发明人： Wirsching, Franz, Dr.
IPC分类号： C04B28/14
CPC分类号： C04B28/143 , C04B11/26 , E01C7/12 , Y02W30/92 , C04B7/00 , C04B18/08 , C04B40/00 , C04B22/064

9. 发明公开

EP0276077A3 A process for forming finely divided calcium sulphate 失效
标题翻译：形成精细分解的硫酸钙的方法
公开(公告)号：EP0276077A3
公开(公告)日：1989-07-05
申请号：EP88300249.5
申请日：1988-01-13
申请人： ECC INTERNATIONAL LIMITED
发明人： Riley, Peter William , Jepson, Walter Brian
IPC分类号： C01F11/46
CPC分类号： C04B28/143 , C01F11/46 , C01P2004/61 , C01P2004/62 , C09C1/027 , C04B20/008 , C04B20/026
摘要： There is disclosed a process for preparing calcium sulphate having a particle size distribution such that at least 50% by weight of the particles have an equivalent spherical diameter smaller than 2 microns, which process comprises the following steps:
(a) mixing a relatively coarse calcium sulphate with water to form an aqueous suspension containing from 5 to 45% by weight of dry solids; (b) comminuting the calcium sulphate in the suspension formed in step (a) by agitating the suspension in admixture with a particulate grinding medium until the calcium sulphate has a particle size distribution such that at least 50% by weight of the particles have an equivalent spherical diameter smaller than 2 microns; (c) separating the aqueous suspension of ground calcium sulphate formed in step (b) from the particulate grinding medium; and (d) dewatering the aqueous suspension in a filter press at a pressure of at least 500 pounds per square inch (3.45 MPa); and wherein steps (a) to (d) are conducted in the absence of a dispersing agent. Also described is a process for preparing an aqueous suspension of finely divided calcium sulphate.

10. 发明公开

EP0276077A2 A process for forming finely divided calcium sulphate 失效
标题翻译： Verfahren zur Herstellung von fein zerteiltem Kalzium sulphat。
公开(公告)号：EP0276077A2
公开(公告)日：1988-07-27
申请号：EP88300249.5
申请日：1988-01-13
申请人： ECC INTERNATIONAL LIMITED
发明人： Riley, Peter William , Jepson, Walter Brian
IPC分类号： C01F11/46
CPC分类号： C04B28/143 , C01F11/46 , C01P2004/61 , C01P2004/62 , C09C1/027 , C04B20/008 , C04B20/026
摘要： There is disclosed a process for preparing calcium sulphate having a particle size distribution such that at least 50% by weight of the particles have an equivalent spherical diameter smaller than 2 microns, which process comprises the following steps:

(a) mixing a relatively coarse calcium sulphate with water to form an aqueous suspension containing from 5 to 45% by weight of dry solids;
(b) comminuting the calcium sulphate in the suspension formed in step (a) by agitating the suspension in admixture with a particulate grinding medium until the calcium sulphate has a particle size distribution such that at least 50% by weight of the particles have an equivalent spherical diameter smaller than 2 microns;
(c) separating the aqueous suspension of ground calcium sulphate formed in step (b) from the particulate grinding medium; and
(d) dewatering the aqueous suspension in a filter press at a pressure of at least 500 pounds per square inch (3.45 MPa); and wherein steps (a) to (d) are conducted in the absence of a dispersing agent. Also described is a process for preparing an aqueous suspension of finely divided calcium sulphate.
摘要翻译：公开了一种制备具有粒度分布使得至少50重量％的颗粒具有小于2微米的当量球形的硫酸钙的方法，该方法包括以下步骤：（a）将相对粗的钙硫酸盐与水形成含有5至45重量％干燥固体的水悬浮液; （b）在步骤（a）中形成的悬浮液中粉碎硫酸钙，通过与颗粒研磨介质混合搅拌悬浮液，直到硫酸钙具有使得至少50重量％的颗粒具有相当于球形直径小于2微米; （c）将步骤（b）中形成的研磨的硫酸钙的水悬浮液与颗粒研磨介质分离; 和（d）以至少500磅/平方英寸（3.45MPa）的压力将压滤机中的水性悬浮液脱水; 并且其中步骤（a）至（d）在不存在分散剂的情况下进行。还描述了一种制备细碎硫酸钙的水性悬浮液的方法。 p

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