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Class 106/796 - Silica-lime mixtures


Subclass of Class 106 - Compositions: coating or plastic
Definition: Subject matter employing silica, e.g., sand or quartz.
No. of patents: 45
Last issue date: 04/10/2007


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NumberTitleIssue Date
7201798Set-delayed cement compositions comprising hydrated lime and silica and methods of cementing in subterranean formations
Cement compositions for use in subterranean formations are provided. An example of a cement composition is a cement composition comprising: water, a cementitious component consisting essentially of: hydrated lime, and silica; and a dispersant. Another example of a c...
04/10/2007
7097706Non-heating clay composites for building materials
The object of this invention is to provide a non-calcined clay composite used as building materials capable of promoting humans' health and being desirably used irrespective of location, which is improved in terms of strength without calcining clay. Because the non-...
08/29/2006
6962623Hardened calcium silicate having high strength
Disclosed is a cured form of calcium silicate, mainly comprising tobermorite and exhibiting a powder X-ray diffraction pattern in which the diffraction peak intensity Ib ascribed to the (220) plane of the tobermorite and the minimum diffraction intensity Ia observed...
11/08/2005
6869475Calcium silicate insulating material containing blast furnace slag cement
An asbestos free, calcium silicate insulating material, suitable for use in applications where a tough, fire resistant, heat insulating, electrical insulating, and corrosion resistant material is desirable. The calcium silicate insulating material is produced by com...
03/22/2005
6855200Inorganic cohesion agent for self-compacting cement pastes
The present invention relates to an inorganic cohesion agent for self-compacting cement pastes consisting of a co-precipitated SiO2/CaCO3 mixture. ...
02/15/2005
6840994Calcium silicate insulating material containing alumina silica microspheres
An asbestos free, calcium silicate insulating material suitable for use in the casting of molten non-ferrous metals, and suitable for use in applications where a fire resistant, heat insulating, electrical insulating, and corrosion resistant material is desirable. T...
01/11/2005
6689286Shaped thermal insulation body
A shaped thermal insulation body comprises inorganic material. The shaped body has the following, weight-related composition: approx. 20 wt. % inorganic filling material: approx. 40 wt. % opacifier; approx. 10 wt. % fibrous material; and approx. 15 wt. % ...
02/10/2004
6464771Cured calcium silicate object with high strength
The invention relates to a hardened calcium silicate material characterized by having Ib/Ia which is greater than 3 (wherein Ib represents the diffraction peak intensity of the tobermorite (220) plane in powdery X-ray diffractometry; and Ia represents the...
10/15/2002
6287378Method of producing synthetic silicates and use thereof in glass production
A method is disclosed of producing a synthetic silicate. The method is advantageous in providing material useful in glass making. Such method involves the reaction of calcium oxides and magnesium oxides, water and sodium silicates. The glass formation is ...
09/11/2001
6238476Method of curing drywall compound
A method of reducing the curing time of drywall joint compound, and thereby reducing the time required to finish drywall joints or to repair plaster walls, includes adding a predetermined amount of a drying agent to a conventional ready-mixed drywall join...
05/29/2001
5897700Apparatus and integrated process for reclaiming paper mill sludge and producing useful products therefrom
Paper mill sludge is reclaimed and useful products produced therefrom. A predetermined amount of paper mill sludge is continuously discharged from a storage reservoir onto a mixer/conveyor to create a first reactant stream. A predetermined amount of calci...
04/27/1999
5650004Cement plaster composition, additive therefor and method of using the composition
There is disclosed a cement plaster composition wherein an additive having from about 10% to about 75% of a silicone treated powder and from about 90% to about 25% of a pozzalanic filler is combined with a type I Portland cement and a crushed aggregate to...
07/22/1997
5573587Process for producing building materials from paint sludge
An process for manufacturing a admixture for concrete, mortar or asphalt out of paint sludge is discussed; The preferred embodiment utilizes the chemical drying of paint sludge through the addition of lime. The resulting powder contains a mixture of slake...
11/12/1996
5569324Cementitious compositions
The present invention provides improved cementitious compositions which can include drilling fluid as a component thereof and methods of cementing wells utilizing such compositions. The compositions are basically comprised of a cementitious material, wate...
10/29/1996
5547505Compositions for low heat cements
Compositions for low heat cements developed especially for massive concrete works and which exhibit a compressive strength/heat of hydration ratio of at least 7.0 at the age of 13 weeks. One of two inventions provides a powder prepared by mixing CaO, SiO
08/20/1996
5505774Continuous flow process for treating waste cellulosic fiber and paper mill sludge
A continuous flow process for treating waste cellulosic fiber or paper mill sludge wherein calcium oxide, silica and water are blended with waste cellulosic fiber or paper mill sludge such that a pH is reached of between 10.5 and 12 to provide a treated m...
04/09/1996
5401481Processes for removing acid components from gas streams
The present disclosure relates to improved processes for treating acid gases to remove acid gas components therefrom. Processes in accordance with the present invention include preparing a calcium silicate hydrate sorbent in the form of a semi-dry, free-f...
03/28/1995
5387738Reagent for treating a contaminated waste material and method for same
A reagent material useful for converting a contaminated waste material, which is environmentally unacceptable, to a relatively harmless granular substance which is environmentally acceptable. The reagent material is comprised of an effective amount of alu...
02/07/1995
5340513Process for the production of calcium hydrosilicate bonded shaped articles
A method and composition for the preparation of calcium silicate bounded shaped articles comprising mixing SiO2 containing powder, unslaked or slaked lime, calcium hydroxide, with a waste paper pulper slurry containing cellulosic particle of le...
08/23/1994
5336022Method for producing enhanced soil stabilization reactions between lime and clay soils due to the effect of silica addition
A method is shown for stabilizing clay bearing soils in which a silica compound is incorporated into the soils in addition to the application of lime. The silica compound can be either an amorphous, silica fume, a crystalline silica, a silica gel, sodium ...
08/09/1994
5330573Molding of calcium silicate having high strength and its manufacturing method
A molding of calcium silicate having high strength, which is similar to a natural timber, wherein tobermorite, C--S--H (Calcium Silicate hydrate) and quartz are mixed, and glass fiber and pulp are added, respectively, and a Ti/Qi peak ratio of which is po...
07/19/1994
5327968Utilizing drilling fluid in well cementing operations
The present invention provides methods of cementing a well with a cementing composition utilizing a portion of the drilling fluid used to drill the well as a component in the cementing composition. The methods basically comprise forming a set-activated ce...
07/12/1994
5286427Method of environmental cleanup and producing building material using copper mine tailings waste material
A method of environmental cleanup by producing an autoclaved aerated cement building material (termed AAC) by a process that uses the available silica sand and other raw materials in mine tailings, in particular copper mine tailings from porphyry copper m...
02/15/1994
5252127Process for the insolubilization and aggregation of smoke purification waste materials
Smoke purification waste materials (SPW), rich in lime, are mixed with a product containing at least 60% silica and/or aluminum to bring the pH to a value of between 7 and 11.5 and with a quantity of water of between 15% and 160% of the weight of the wast...
10/12/1993
5228808Method for preventing the adverse effects of swell in sulfate bearing, expansive clay soils
A method is shown for stabilizing sulfate bearing soils in which a silica compound is incorporated into the soils with the soils being further stabilized by the application of lime. The silica compound can be either an amorphous, flume silica, a crystalli...
07/20/1993
5160376Cement setting accelerator and method of manufacturing the same
The present invention provides a cement setting accelerator comprising 100 parts by weight of a sintered body, 5 to 70 parts by weight of an alkali metal carbonate powder and at most 170 parts by weight of a lime powder and a method of manufacturing the s...
11/03/1992
5073199Insulating material containing pitch based graphite fiber
An asbestos-free insulating material suitable for use in molten metal casting is disclosed. The material is made from a mixture comprising lime, siliceous component, wollastonite, inorganic fiber and pitch based graphite fiber. The mixture is mixed with w...
12/17/1991
4970246Acetylene storage vessel filler and method
A slurry having an aqueous liquid and dispersed solids may be vacuum filled into an acetylene storage container and indurated to yield a lime-silica matrix with a porosity between about 88 percent to 92 percent. The matrix includes a mixture of aromatic p...
11/13/1990
4956321Surface pacified wollastonite
Wollastonite acid treated and dried to pacify the surface processes more uniformly in subsequent reactions or remains inert when used as a filler. Phosphate cements prepared with the pacified wollastonite or similar calcium silicates exhibit improved stre...
09/11/1990
4946504Cement building material
A paste with improved workability is formed from at least 20% Portland cement. The paste when cured under ASTM conditions crystallizes into a substantially homogeneous mass of monolithic crystals of calcium silicate hydrate exhibiting a unique crystalline...
08/07/1990
4875938Method of making a mortar binder and product
A method of making a mortar binder including the steps of heating marine shell material to a predetermined high range of temperature, allowing the material to cool, mixing with the material a predetermined proportion of water, which may be sea water, allo...
10/24/1989
4812257Process for dry cationization of starch
A dry process for preparation of cationic starch ethers by reaction of starch with alkylidene epoxides in the presence of water in an alkaline medium at a temperature of 5° to 40° C. in the presence of a finely divided silica....
03/14/1989
4775505Process for preparing a water repellent calcium silicate shaped product
A process for preparing a water repellent calcium silicate shaped product, which comprises dispersing a siliceous source and a calcareous source in water, mixing a water repellent composition thereto, reacting the mixture under heating to obtain an aqueou...
10/04/1988
4647499Shaped body of calcium silicate and process for producing same
A calcium silicate shaped body which comprises a multiplicity of interconnected secondary particles of calcium silicate crystals, voids interspersed between the secondary particles, and at least one inorganic inactive substance selected from among carbona...
03/03/1987
4560413Gamma-dicalcium silicate-containing cement composition
A hardened cement material having enhanced flexural strength, heat resistance, and water resistance prepared from a cement composition comprising 100 parts by weight of a hydraulic cement material containing γ-dicalcium silicate (γ-C2 S) pref...
12/24/1985
4430126Hydraulically setting shaped brick, particularly for construction, and method for its production
With hydraulically setting shaped brick, particularly for construction, composed of (a) 4 to 30% by weight hydraulically or similarly acting binding agent, such as cement, high-hydraulic lime, lime or hydraulically reacting plastic or mixtures thereof; (b...
02/07/1984
4384896Agglomerated volatilized silica dust
There is provided a process for agglomerating volatilized silica in the form of grains by wetting same with from about 10 to about 35% by weight of an alkali or alkaline earth metal oxide solution in water, said agglomerated volatilized silica having a de...
05/24/1983
4354878Mineral article such as thermal insulation containing visual identification means
An asbestos-free mineral article useful as thermal insulation is described into which a visual identifying material is incorporated. The identifying material may be any of a variety of inorganic particulate materials such as particulate minerals, colored ...
10/19/1982
4306912Process for producing a binder for slurry, mortar, and concrete
A process for producing a binder (cement) to be used in slurry, mortar, or concrete having a low water-to-cement ratio. As raw-material for the binder is used at least 50% by weight of a hydraulic material, such as slag, technical pozzolanas and/or natura...
12/22/1981
4238240Method of and structure for forming a reaction product such as calcium silicate and the resulting structure
Calcium silicate insulation is formed by a process which involves the transfer of the calcium silicate crystals from an autoclave to a holding vessel at a flow rate selected to minimize or prevent damage to the reaction product and through a flow passage ...
12/09/1980
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