221 |
Brotherhood |
US342678D |
|
US342678A |
1886-05-25 |
|
|
222 |
Manufacture of hydraulic cement |
US315711D |
|
US315711A |
1885-04-14 |
|
|
223 |
Sidney h |
US305970D |
|
US305970A |
1884-09-30 |
|
|
224 |
George james snelus |
US294283D |
|
US294283A |
1884-02-26 |
|
|
225 |
John gjebs |
US291047D |
|
US291047A |
1884-01-01 |
|
|
226 |
Improvement in hydraulic cement |
US154641D |
|
US154641A |
1874-09-01 |
|
|
227 |
Additive for cementitious materials |
US14915664 |
2014-08-28 |
US09809496B2 |
2017-11-07 |
Hannele Kuosa; Anna Suurnakki; Antti Laukkanen; Jan-Erik Teirfolk; Markku Leivo |
The invention relates to use of nano-fibrillar cellulose as an gas-entrainment stabilizer, which when used in cementitious materials, provides improved gas pore structure quality and/or stability and/or robustness with regard to water content variation. The invention further relates to a method for stabilizing gasentrainment of cementitious materials and to a method for providing cementitious material with improved air pore structure quality and/or stability and/or robustness with regard to water content variation. |
228 |
METHOD FOR EXHAUST GAS TREATMENT, AND SYSTEM COMPRISING AN EXHAUST GAS TREATMENT DEVICE |
US15316815 |
2015-06-09 |
US20170160014A1 |
2017-06-08 |
Franz-Josef Zurhove |
A method for treating exhaust gas in an exhaust gas treatment device of a system may involve withdrawing exhaust gas from a processing device for mechanically and/or thermally processing an inorganic material of the system. The material to be fed to the processing device may be preheated by heat exchange with the exhaust gas. Further, a temperature of the exhaust gas entering the exhaust gas treatment device may be adjusted by adapting the exchange of heat between the exhaust gas and the inorganic material. In some examples, the exhaust gas treatment device may comprise an oxidation catalytic converter and/or a reduction catalytic converter. |
229 |
ADDITIVE FOR CEMENTITIOUS MATERIALS |
US14915664 |
2014-08-28 |
US20160257614A1 |
2016-09-08 |
Hannele Kuosa; Anna Suurnakki; Antti Laukkanen; Jan-Erik Teirfolk; Markku Leivo |
The invention relates to use of nano-fibrillar cellulose as an gas-entrainment stabilizer, which when used in cementitious materials, provides improved gas pore structure quality and/or stability and/or robustness with regard to water content variation. The invention further relates to a method for stabilizing gasentrainment of cementitious materials and to a method for providing cementitious material with improved air pore structure quality and/or stability and/or robustness with regard to water content variation. |
230 |
METHOD FOR MANUFACTURING HIGH-STRENGTH CEMENT CURED PRODUCT |
US14761645 |
2013-07-09 |
US20150353423A1 |
2015-12-10 |
Tsutomu TAKIZAWA |
A method for manufacturing a high-strength cement cured product constituted by: mixing and kneading cement with at least water and water-reducing agent; patting the cement kneaded mixture (5) into a vacuum device and removing air and dehydrating by vacuum evacuation; forming an impermeable coating layer (7) on the surface of the cement kneaded mixture (5) contained in a container inside the vacuum device (1) and then exposing the cement kneaded mixture (5) to atmospheric pressure; and then curing the cement kneaded mixture (5). This enables it to be hardened while having a reduced air amount. Thereby, a high-strength cement cured product having high compressive strength can be obtained. |
231 |
Process and plant for producing cement clinker and for purifying the offgases formed |
US14007524 |
2012-04-02 |
US08936678B2 |
2015-01-20 |
Franz-Josef Zurhove |
The invention relates to a process and a plant for producing cement clinker and for purifying the off-gases formed thereby, wherein cement raw meal is preheated in a preheater by means of hot off-gases and then optionally precalcined, the preheated and optionally precalcined cement raw meal is burnt in a rotary kiln to form cement clinker, the cement clinker is cooled in a cooler, the hot off-gases used in the preheater are used in a raw mill for treating the cement raw meal, the dust content of a dust-containing mill off-gas thereby formed is reduced in a separating device to less than 5 g/Nm3, preferably less than 1 g/Nm3, alkali hydrogen carbonate and/or alkali carbonate is added to and mixed with the mill off-gas whose dust content has been reduced to less than 5 g/Nm3, and the mixed gas thereby formed is subsequently fed to a process filter for separation of dust laden with pollutants. |
232 |
System for manufacturing a proportional slurry |
US13205762 |
2011-08-09 |
US08714809B2 |
2014-05-06 |
Fred Brouillette; Clifford Ryan; Yon Martin Robinson |
A novel apparatus for the manufacture of high solid content lime and/or cement slurry that can be used in stabilization applications. The novel apparatus uses nozzles directed at a diffusion baffle to insure proper wetting of the lime or cement based material in order to produce a sufficiently homogenous slurry that sufficiently remains in suspension so that it can be used in stabilization applications without the need for additional mixing. |
233 |
METHODS AND SYSTEMS FOR UTILIZING CARBIDE LIME |
US13804439 |
2013-03-14 |
US20130256939A1 |
2013-10-03 |
Martin Devenney; Miguel Fernandez; Irvin Chen; Guillaume Calas |
Methods and systems are provided for producing a carbonate precipitation material comprising stable or reactive vaterite from carbide lime that provides both a source of divalent cations (Ca2+ ions, Mg2+ ions, etc.) and a source of proton removing agent. |
234 |
Method and apparatus for using steel slag in cement clinker production |
US18261794 |
1994-01-14 |
US5421880C1 |
2001-06-05 |
YOUNG ROM D |
|
235 |
Quick-setting concrete and a method for making quick-setting concrete |
US424947 |
1995-04-19 |
US5624493A |
1997-04-29 |
Arun S. Wagh; Dileep Singh; Jose D. Pullockaran; Lerry Knox |
A method for producing quick setting concrete is provided comprising hydrng a concrete dry mixture with carbonate solution to create a slurry, and allowing the slurry to cure. The invention also provides for a quick setting concrete having a predetermined proportion of CaCO.sub.3 of between 5 and 23 weight percent of the entire concrete mixture, and whereby the concrete has a compression strength of approximately 4,000 pounds per square inch (psi) within 24 hours after pouring. |
236 |
Process of making refractory fiber structures |
US568431 |
1995-12-06 |
US5603887A |
1997-02-18 |
Axel Eschner |
The invention relates to a process of making fiber structures in the form of refractory light-weight moldings. These fiber structures exhibit the advantage that they do not contain, or contain virtually no harmful fibers, and/or that such fibers that might still exist in the fiber structures can be readily decomposed by water or body fluids. Nevertheless, the fiber structures exhibit the advantageous thermal and mechanical properties of conventional light-weight moldings. The fiber structures according to the invention are manufactured using inorganic fibers, wherein at least 90% by weight of each fiber comprises 20-50% by weight of CaO and 50-80% by weight of Al.sub.2 O.sub.3. The rest comprises a maximum of 10% by weight of typical impurity oxides. Water or a water-containing liquid is used as the charge liquid, and conventional refractory additives may also be added to the mixture of fibers and water to be molded. |
237 |
Preparation of cement using stabilized fibers of metastable calcium
silicate |
US780909 |
1985-09-27 |
US4668300A |
1987-05-26 |
Jorge Miller |
A molten reaction product of calcium oxide, silica and aluminum is quickly quenched from a temperature clearly in excess of the .alpha.'-.alpha. inversion in a manner which simultaneously forms stabilized B-phase dicalcium silicate fibers having diameters which do not exceed 15 microns. These fibers are milled into smaller particles which are particularly useful for producing high-strength cement which does not require activation with lime. |
238 |
Method for the desulfurization of flue gas of a firing system |
US689393 |
1985-01-07 |
US4634583A |
1987-01-06 |
Albrecht Wolter; Horst Herchenbach |
A method for the desulfurization of a calcium containing flue gas stream from a firing system such as a cement making plant wherein at least partially deacidified, hot raw cement meal is added to the flue gas at selected points to absorb the sulfur oxides to the calcium present in the gas. The preferred form of the invention comprises suspending the deacidified raw cement meal in the flue gas in the form of a cloud of airborne dust, and thereafter separating the dust from the flue gas after the sulfur oxides have been bonded to the calcium. |
239 |
Process for plant scale production of cement with mechanical compounding |
US28261 |
1979-04-09 |
US4217143A |
1980-08-12 |
Harry Reich; Joseph J. Coney |
A process for plant scale production of cement wherein the materials including at least calcium oxide, silicon dioxide and aluminum oxide are subjected to the steps of grinding to approximately a 200 mesh size, drying to less than 5% water by weight of the materials when mixed, blending to a uniform mixture and compounding in a high velocity compounding mill. |
240 |
Technique for handling and transporting cement |
US704312 |
1976-07-12 |
US4132557A |
1979-01-02 |
Arthur D. Saylor |
The powdered, blended, cement ingredients are stored and/or shipped prior to kilning and after being brought to the general region of use are then heated to the required temperature to obtain the desired characteristics of cement (i.e., the ability to harden). A further aspect is that the unkilned cement ingredients, either as a slurry when made by a "wet" process or formed into a slurry when made by a "dry" process, are shipped in an oil tanker during what is typically a dead-head run (e.g., from the United States to the Near East). Thinner is added to the slurry, reducing its viscosity and thereby making it easier to pump into and out of the tanker holds. |