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Showing papers on "Calcium oxide published in 1987"


01 Jan 1987
TL;DR: In this paper, the effects of lime on asphalt stiffness at higher temperatures and on asphalt low-temperature flow properties are also evaluated, taking into account both lime type and concentration and asphalt composition.
Abstract: This paper examines the effects of lime on asphalt age-hardening. The study takes into account the effects of both lime type and concentration and asphalt composition (source). The effects of lime on asphalt stiffness at higher temperatures and on asphalt low-temperature flow properties are also evaluated. High-temperature stiffness and low-temperature flow properties are important in controlling permanent pavement deformation and thermally-induced cracking.

90 citations


Journal ArticleDOI
TL;DR: In this paper, the pore structure of calcium oxide sorbents derived from calcium carbonate and calcium hydroxide (h-CaO) reacting with sulfur dioxide was determined.
Abstract: Changes in the pore structure of calcium oxide sorbents derived from calcium carbonate (c-CaO) and calcium hydroxide (h-CaO) reacting with sulfur dioxide are determined. Results show that the pore shape of c-CaO approximates a cylinder while that of h-CaO appears to be slit- or platelike. The pore volume of c-CaO is located in much smaller pores than that of h-CaO when compared on the basis of an equivalent pore shape model. The effect of sintering was to reduce surface area through coalescence of smaller pores, while only minor effects were observed upon pore volume and conversion from calcium oxide to calcium sulfate. Both sorbents expand to allow greater reaction than is possible given the initial porosity and formation of a larger volume product. The h-CaO reacts to higher levels of conversion than the c-CaO because the pore shape of the h-CaO allows for greater particle expansion and, therefore, reaction beyond the limits of the initial porosity.

82 citations


Patent
17 Feb 1987
TL;DR: In this article, a treatment composition and method for removing a plurality of contaminants from a wastewater system in the form of a non-leachable sludge is provided, which includes an alkali or alkaline carbonate; activated montmorrilonite; a catalyst such as zirconium and polyelectrolyte; one or more flocculants, such as a metal salt and calcium oxide, lime, or calcium hydroxide; and bentonite.
Abstract: A treatment composition and method is provided for removing a plurality of contaminants from a wastewater system in the form of a nonleachable sludge. The treatment composition comprises an alkali or alkaline carbonate; activated montmorrilonite; a catalyst, such as zirconium and polyelectrolyte; one or more flocculants, such as a metal salt and calcium oxide, lime, or calcium hydroxide; and bentonite. Additionally, the treatment composition may contain soda ash, lignite, and activated carbon. The treatment composition is introduced and mixed with the wastewater, which is then filtered to produce a sludge containing the contaminants in a nonleachable form.

74 citations


Patent
24 Nov 1987
TL;DR: In this paper, the authors present a composition of matter consisting essentially of citric acid and one or more calcium compounds selected from the group consisting of calcium hydroxide, calcium carbonate and calcium oxide.
Abstract: A composition of matter consisting essentially of citric acid and one or more calcium compounds selected from the group consisting of calcium hydroxide, calcium carbonate and calcium oxide. The composition of matter is preferably a substantially dry mixture which may be used, for example, as a powder for making an "instant" beverage of potable liquid. A preferred calcium compound/citric acid molar ratio in the composition of matter of the present invention is between about 0.6 and about 1.5. In a most preferred embodiment, the composition of matter of the present invention consists essentially of calcium hydroxide and citric acid having a calcium compound/citric acid or calcium hydroxide/citric acid molar ratio of about 1.25. The composition of matter of the present invention has a utility demonstrated by dissolution in water to form a liquid dietary calcium supplement comprising soluble calcium citrate. This composition of matter may comprise one or more of a flavorant, lubricant, sweetener or colorant usable to maintain a powdery texture or to enhance the flavor of a beverage prepared therefrom.

72 citations


Journal Article
TL;DR: In this article, the effectiveness of hydrated lime and portland cement on three Texas clays was evaluated and the results showed that lime treatment of expansive, high-plasticity soils was more favorable for compressive strength attainment than was cement treatment of these soils.
Abstract: Stabilization of clay materials is of interest to any engineer who must deal with this type of soil. Stabilization techniques can be mechanical or chemical, or both, but the addition of a stabilizing agent is generally the favored approach. Lime in one form or another has been the most widely used stabilization agent for clay. However, portland cement to stabilize clay has been promoted and used in some applications. It was the purpose of this research to define the effectiveness of hydrated lime and portland cement on three Texas clays. Variables evaluated included two levels of treatment, two levels of pulverization, two compaction efforts, two moisture conditions, and a range of curing times. On the basis of the results and conditions of this test program, lime treatment of expansive, high-plasticity soils was more favorable for compressive strength attainment than was cement treatment of these soils. In general, lime treatment produced higher dry-conditioned strengths, but the major advantage was in the wet-conditioned strengths. Lime treatment provided significantly better resistance to moisture damage when these soils were compacted by the modified compactive effort. Cement treatment of low-plasticity sandy clay produced significantly higher compressive strengths than did lime treatment of this soil.

47 citations


Journal ArticleDOI
TL;DR: In this paper, fine powders consisting of 0.1-0.5 µm size crystallites of CaTiO3 are prepared at 150-200°C by the hydrothermal method starting from hydrated titania gel and reactive calcium oxide suspended as an aqueous slurry in an autoclave.

29 citations


Patent
29 Oct 1987
TL;DR: In this paper, a process for producing a calcium phosphate comprising the steps of (a) dissolving at least one member selected from the group consisting of calcium hydroxide and calcium oxide in water, and (b) adding phosphoric acid to the solution obtained to precipitate a calcium phosphate.
Abstract: A process for producing a calcium phosphate comprising the steps of (a) dissolving at least one member selected from the group consisting of calcium hydroxide and calcium oxide in water with at least one member selected from the group consisting of a sugar, a sugar alcohol, and a polyhydric alcohol; (b) and adding phosphoric acid to the solution obtained to precipitate a calcium phosphate.

28 citations


Patent
17 Dec 1987
TL;DR: The preparation of finely divided calcium hydroxide starts in a manner known per se from quicklime (calcium oxide) which is reacted to calcinedime (slaked lime) in a conventional slaking apparatus by means of water and additives, with the additives used being, on the one hand, sugar or sugar-containing compounds to achieve a high specific surface area and on the other hand, glycols, amines and other milling aids to increase the flowability of the calcinedite powder formed as mentioned in this paper.
Abstract: The preparation of finely divided calcium hydroxide starts in a manner known per se from quicklime (calcium oxide) which is reacted to calcium hydroxide (slaked lime) in a conventional slaking apparatus by means of water and additives, with the additives used being, on the one hand, sugar or sugar-containing compounds to achieve a high specific surface area and, on the other hand, glycols, amines and other milling aids to increase the flowability of the calcium hydroxide powder formed. In this way there is prepared a finely divided, highly reactive calcium hydroxide powder of correspondingly high specific surface area, which is particularly suitable for use in dry flue-gas purification, in particular the neutralisation of the acid components thereof.

24 citations


Patent
Tze-Chi Jao1
07 Dec 1987
TL;DR: In this article, it has been found experimentally that by first adding at least 25% of the total water in a single aliquot that crystalline calcium carbon formation is suppressed.
Abstract: In an overbased sulfonate process calcium hydroxide is formed in situ by first adding 25% of the total water and then adding the remainder of the water uniformly to the calcium oxide over the entire hydration and carbonation time rather than incrementally. It has been found experimentally that by first adding at least 25% of the total water in a single aliquot that crystalline calcium carbon formation is suppressed. A 300 TBN product is formed with an H 2 O/CaO molar ratio of 0.4 and a 3 hour hydration time. A 400 TBN product is formed with an H 2 O/CaO molar ratio of 0.8 and 3 hour hydration time. Improved storage stability is achieved by eliminating crystalline calcium carbonate formation. Crystalline calcium carbonate has been related to engine wear.

20 citations


Journal Article
TL;DR: In this paper, four variables that affect the success of lime as an antistripping agent were evaluated: (a) four methods of adding two types of lime to asphalt-aggregates, (b) four lime products, (c) two different aggregate sources, and (d) air voids.
Abstract: Four variables that affect the success of lime as an antistripping agent were evaluated: (a) four methods of adding two types of lime to asphalt-aggregates, (b) four lime products, (c) two different aggregate sources, and (d) air voids. Effects of the four variables on moisture sensitivity were evaluated by determining the resilient modulus and the tensile strength of samples before and after one cycle of the Lottman accelerated conditioning procedure (a freeze-thaw cycle subjecting water-saturated samples to freezing at -20 deg F and thawing in a 140 deg F water bath). The effects of the variables on temperature susceptibility were evaluated by determining the resilient modulus values at four different test temperatures. The following conclusions can be drawn from this research project: (a) quicklime added to the asphalt or to the dry aggregate can be detrimental to the mixture; (b) dolomitic lime can improve mixture properties to the same degree as hydrated lime; (c) mixture properties can be enhanced by the addition of hydrated lime, regardless of the moisture susceptibility of the untreated mixes; (d) an increase in the volume of lime used can further improve the mixture properties; and (e) air voids significantly affect mixture properties, regardless of lime variations.

17 citations


Patent
18 Nov 1987
TL;DR: In this article, a bioceramic is provided comprising about 10 to 50 wt. % zinc oxide or zinc sulfate or mixtures thereof, about 30 to 40 wt% calcium oxide and about 10.5% phosphorus pentoxide.
Abstract: A bioceramic is provided comprising about 10 to 50 wt. % zinc oxide or zinc sulfate or mixtures thereof, about 30 to 40 wt. % calcium oxide and about 10 to 40 wt. % phosphorus pentoxide. A surgical cement composition is also provided comprising the bioceramic and a setting agent, said bioceramic comprising zinc oxide, calcium oxide and phosphorus pentoxide. The bioceramic is also useful as a drug delivery device.

Patent
13 Nov 1987
TL;DR: In this article, the authors described a process for producing strong, durable fiberous phosphate ceramic structures by applying higher pressures during the reaction of phosphoric acid, a metal oxide selected from the group consisting of zinc oxide, calcium oxide, magnesium oxide, and aluminum oxide; and calcium silicate within a matrix of the fiber or the fiber and a binder.
Abstract: Processes are described for producing strong, durable fiberous phosphate ceramic structures. Stronger fiberous phosphate ceramic structures can be produced by applying higher pressures during the reaction of phosphoric acid, a metal oxide selected from the group consisting of zinc oxide, calcium oxide, magnesium oxide, and aluminum oxide; and calcium silicate within a matrix of the fiber, or the fiber and a binder.

Patent
06 Jan 1987
TL;DR: In this article, a non-polluting method of burning fuel to produce heat and a CO 2 -rich hot flue gas stream is described, where fuel (e.g., coal, oil, gas, wood, inter alia) is passed into a gasifier bed (12) containing particles of calcium sulfate and, optionally, calcium oxide.
Abstract: A non-polluting method of, and apparatus for, burning fuel to produce heat and a CO 2 -rich hot flue gas stream is described. Fuel (e.g., coal, oil, gas, wood, inter alia) is passed into a gasifier bed (12) containing particles of calcium sulfate and, optionally, calcium oxide. Bed 12 is fluidized by product gas containing an oxygen-transfer mediator (or source thereof) such as hydrogen, and fuel is partially oxidized to gas-phase products including CO and CO 2 at a temperature above the carbonation temperature of calcium oxide, calcium sulfate being reduced to calcium sulfide. The gas-phase products are passed into the base of a combustion bed (28) containing particles of calcium sulfate in the presence of an oxygen-transfer mediator and CO is oxidized to CO 2 at a temperature above the carbonation temperature of calcium oxide. Calcium sulfide-containing particles from the gasifier and combustion beds (12 and 28) are fluidized by an oxidizing gas (e.g. air) in respective oxidation beds (42,45) and CaS is exothermically oxidized to CaSO 4 for re-use. Preferably the particles circulate from the gasifier bed (12) to a first oxidation bed (42), then to the combustion bed (28), a second oxidation bed (45) and back to the gasifier bed (12) via underflow weirs connecting the beds. The gas from each bed is at the temperature of the respective bed (e.g. 850° to 1000° C.) and is used for steam raising, preheating air, etc.

01 Apr 1987
TL;DR: In this paper, it was found that the alkali reactivities depend on the chemical compositions of the glass aggregates, increase with the increase of silica and sodium oxide contents, and correspondingly decrease with an increase of calcium oxide and alumina contents.
Abstract: Results of laboratory tests to determine the alkali reactivities of glass aggregates in concrete. It was found that the alkali reactivities depend on the chemical compositions of the glass aggregates, increase with the increase of silica and sodium oxide contents, and correspondingly decrease with the increase of calcium oxide and alumina contents. Bibliographic references.

Journal ArticleDOI
TL;DR: The effect of selected chemical admixtures on the progress of portland cement hydration, composition of the hydration products, and strength development was studied in this article, where the effect of zinc oxide (ZnO), Na-lignosulfonate, and a melamine resin was investigated.
Abstract: The effect of selected chemical admixtures on the progress of portland cement hydration, composition of the hydration products, and strength development was studied. Calcium chloride (CaCl2) accelerated the hydration of both tricalcium silicate (C3S) and tricalcium aluminate (C3A) and increased the calcium oxide/silicon dioxide (CaO/SiO2) ratio of the formed calcium-silicate-hydrate (CSH) phase. In the presence of zinc oxide (ZnO), Na-lignosulfonate, and a melamine resin, the hydration of both C3S and C3A was retarded, while in the presence of sucrose only that of C3S. The effect of all these additives was more pronounced if pure C3S rather than portland cement was employed. Regardless of the kind and amount of admixture added (except high amounts of CaCl2) and hydration time, the bound water content, amount of liberated calcium hydroxide, and compressive strength were linear functions of the amount of hydrated C3S.

Patent
13 Nov 1987
TL;DR: In this paper, a non-reactive matrix of either fiber or a mixture of fiber and a binder is used in an amount effective to hold the wet or dry-laid material together.
Abstract: Phosphate reactive sheets and substrates can be prepared using wet-laying and dry-laying techniques. The wet or dry-laid composition contains calcium silicate and a non-reactive matrix of either fiber or a mixture of fiber and a binder. The matrix is used in an amount effective to hold the wet or dry-laid material together. At a desired time such phosphate reactive substrate compositions can be contacted with aqueous solutions of phosphoric acid. A metal oxide selected from aluminum oxide, magnesium oxide, zinc oxide, and calcium oxide must be present in either the substrate, the solution, or both. After the solution contacts the substrate, a reaction takes place within the matrix to form a rigid article.

Patent
13 Nov 1987
TL;DR: In this article, a sintering aid is selected from the group consisting of an oxide mixture of calcium oxide and at least one of tungsten oxide and molybdenum oxide, and a mixture of compounds capable of being converted into said oxide mixture (a) or said oxide (b) by Sintering to aluminum nitride so that the resulting composition consists essentially of 0.1 to 20 wt.
Abstract: Black sintered bodies of aluminum nitride are produced by adding a sintering aid selected from the group consisting of (a) an oxide mixture of calcium oxide and at least one of tungsten oxide and molybdenum oxide, (b) an oxide containing calcium and at least one of tungsten and molybdenum and (c) a mixture of compounds capable of being converted into said oxide mixture (a) or said oxide (b) by sintering to aluminum nitride so that the resulting composition consists essentially of 0.1 to 20 wt. % in the total amount (calculated as oxides of Ca, W and Mo) of the sintering aid and balance aluminum nitride, molding the composition and sintering the molded composition at relatively low temperature. The black sintered bodies thus obtained are especially useful as materials for insulating substrate, heat sink and packaging for semiconductor device due to their high density, good thermal conductivity and superior light-shielding ability.

Journal ArticleDOI
TL;DR: The authors have modeled some chemical processes that occur in municipal incinerators that result in the emission of organochlorine compounds by studying the high-temperature destruction of noncombustible polymers, specifically poly(vinylidene chloride), in a stream of heated, flowing, moist air.
Abstract: The authors have modeled some chemical processes that occur in municipal incinerators that result in the emission of organochlorine compounds by studying the high-temperature destruction of noncombustible polymers, specifically poly(vinylidene chloride), in a stream of heated, flowing, moist air. The dominant volatile products form the thermal destruction of poly(vinylidene chloride) were polychloroaromatic hydrocarbons. The thermochemistry for the reaction of calcium, oxide, chloroacetylene, and oxygen to give calcium chloride, carbon dioxide, and water is very favorable (-571 kcal/mol). Calcium oxide is available by the heat treatment of crushed limestone. Fluidized-bed technology involving calcium oxide is already in place for reduction of acidic emissions (SO/sub 2/) from coal-fired power plants. Preliminary experiments in which a fluidized bed of calcium oxide was placed above the thermal destruction zone for poly(vinyldene chloride) in a 1000/sup 0/C tube furnace results in a decrease in aromatic polychloride effluents of a factor of 3 x 10/sup 2/. 18 references, 4 figures, 2 tables.

Patent
14 Oct 1987
TL;DR: In this paper, the authors proposed to increase the specific resistance of porcelain over 10 12 Ωcm even though sintering is made at a low temp. and baking in non-oxidizing atmosphere.
Abstract: PURPOSE: To increase specific resistance by containing barium oxide, calcium oxide, strontium oxide, silicon oxide, and zirconium oxide as main components, and substituting part of ZrO 2 with one or more of TiO 2 and SnO 2 . CONSTITUTION: Among compositions ranging surrounded by Points AWD (X, Y, Z), wherein the total of barium oxide content, calcium oxide content, and strontium oxide content is X parts by weight converted into (Ba 1-a-b Ca a Sr b )O(0< a, 0

Patent
11 Jun 1987
TL;DR: The tendency of sintered iron oxide articles, particularly those wherein the iron oxide in the SINO is in the form of haematite, containing a minor proportion of calcium oxide to cracking on reduction of the IR to iron is increased by the incorporation of a minor amount of magnesium aluminate spinel into the IR composition.
Abstract: The tendency of sintered iron oxide articles, particularly those wherein the iron oxide in the sintered article is in the form of haematite, containing a minor proportion of calcium oxide to cracking on reduction of the iron oxide to iron is increased by the incorporation of a minor amount of magnesium aluminate spinel into the iron oxide composition.

Patent
09 Mar 1987
TL;DR: In this article, a composite polymer emulsion composed mainly of an acrylic acid ester is produced e.g. by emulsifying a mixture of 30(wt)% acrylic acid, 20% styrene latex and 50% water with a proper amount of an emulsifier.
Abstract: PURPOSE:To produce a material useful as a surface-coating agent, adhesive and water-stopping material which can be worked in water, by mixing a composite emulsion composed mainly of acrylic acid ester with a main agent composed mainly of powder of silicon oxide, calcium oxide, iron oxide and a specific copolymer. CONSTITUTION:(A) A composite polymer emulsion composed mainly of an acrylic acid ester is produced e.g. by emulsifying a mixture of 30(wt)% acrylic acid ester, 20% styrene latex and 50% water with a proper amount of an emulsifier. Separately, (B) a main agent is produced by uniformly mixing plural components composed mainly of powder of silicon oxide, calcium oxide, iron oxide and a copolymer of polyacrylamide and sodium sulfonate. 5pts.wt. of the main agent (B) is dissolved in 1pt.wt. of the composite polymer emulsion (A), and the solution is kneaded to obtain the objective material for working in water.

Patent
29 May 1987
TL;DR: In this paper, the authors proposed to support metal oxide on the porous surface of the substrate of a positive electrode or a negative electrode comprising a porous carbon substrate, adding phosphoric acid thereto, heating them to form metal phosphate, then impregnating phosphoric acids.
Abstract: PURPOSE:To make long time operation possible by supporting metal oxide on the porous surface of the substrate of a positive electrode or a negative electrode comprising a porous carbon substrate, adding phosphoric acid thereto, heating them to form metal phosphate, then impregnating phosphoric acid. CONSTITUTION:Metal oxide such as silicon oxide, magnesium oxide, and calcium oxide is supported on the porous surface of at least one substrate of a negative electrode and a positive electrode. Phosphoric acid is added to the metal oxide, and they are heated at 100-250 deg.C to form metal phosphate, then phosphoric acid is retained there. The total volume of phosphoric acid retained in the metal phosphate and the porous carbon substrate is limited to 80% or less of the pore volume of the porous carbon substrate. Since the metal phosphate has better wettability compared with the carbon surface of pore, a large volume of phosphoric acid is retained in the porous body. Since phosphoric acid is supplemented from the porous body to an electrolyte layer, the long time operation of a fuel cell is made possible.

Patent
18 Dec 1987
TL;DR: In this article, a powder containing a peroxide of alkaline earth metal as an active ingredient is combined with magnesium sulfate and a basic substance to give an oxygen feeder of high stability, being useful in direct sowing cultivation of rice plant in water paddies.
Abstract: PURPOSE: To obtain an oxygen feeder by adding magnesium sulfate and a basic substance to a powder containing a peroxide of alkaline earth metal as an active ingredient, thus showing initial growth acceleration effect in direct sowing cultivation in water-covered fields as well as high stability. CONSTITUTION: (A) A powder containing a peroxide of alkaline earth metal as an active ingredient is combined with (B) magnesium sulfate and (C) a basic substance to give an oxygen feeder of high stability, being useful in direct- sowing cultivation of rice plant in water paddies. Component A is preferably a solid peroxide which is prepared by oxidizing, with hydrogen peroxide, a mixture of a Ca compound and a Mg compound at a molar ratio of 9.9/0.1W8/2 calculated as CaO and MgO or soluble MgO. Component B is anhydrous or hexahydrated or less hydrated magnesium sulfate or its anhydrous or one or more molar dehydrated double salt. Component C is calcium hydroxide, calcium oxide or magnesium hydroxide. COPYRIGHT: (C)1988,JPO&Japio

Patent
22 Apr 1987
TL;DR: In this paper, a new paint solvents and paints thinned with strongly-alkaline agents are described, which contain at least 40% by weight calcium oxide and are obtained by calcining a calcium-containing natural substance such as shell, bone, limestone or mixture thereof.
Abstract: Novel paint solvents and paints thinned with such solvents are disclosed. In one disclosed embodiment the paint solvent is an aqueous solution containing a high concentration a strongly alkaline agent containing calcium ion as its main cation. Another solvent is disclosed which is a homogeneous blend of (a) an aqueous solution containing a high concentration a strongly alkaline agent having calcium as its main cation and (b) an an aqueous solution obtained by treating seawater with the strongly alkaline agent. The strongly alkaline agent contains at least 40% by weight calcium oxide and is a product obtained by calcining a calcium-containing natural substance such as shell, bone, limestone or mixture thereof.

Patent
24 Aug 1987
TL;DR: In this article, a process for producing a composite TiO 2 pigment which contains a white inert extender is presented, where the neutralization is simplified and the need for washing processes is eliminated in that a metatitanic acid suspension is eliminated.
Abstract: In a process for producing a composite TiO 2 pigment which contains a white inert extender, the neutralization is simplified and the need for washing processes is eliminated in that a metatitanic acid suspension, which contains free and combined sulfuric acid and has been purified for the removal of chromophoric elements, is neutralized by an addition of calcium oxide and/or barium oxide in quantities which are stoichiometric with respect to total sulfate, the calcium sulfate and/or barium sulfate is precipitated in an intimate mixture with the metatitanic acid, and the coprecipitate is separated and dried. The precipitated calcium sulfate and/or barium sulfate is contained in the coprecipitate in an amount from 1 to 25% by weight.

Patent
20 Jul 1987
TL;DR: In this article, the alpha-tricalcium phosphate powder was used to increase the filling speed of a bone or tooth after filling by compounding a specific amount of a calcium hydroxide or calcium oxide powder with an alpha- trical calcium phosphate powder in an amount of 50% or less by wt.
Abstract: PURPOSE:To increase a bone growth speed after filling, by compounding a specific amount of a calcium hydroxide or calcium oxide powder with an alpha- tricalcium phosphate powder. CONSTITUTION:A calcium hydroxide or calcium oxide powder is compounded with an alpha-tricalcium phosphate powder in an amount of 50% or less by wt. of the latter or in an amount of 80 equivalent % or more based on the sum of the number of the acid equivalents of a curing liquid. When the compound ratio of the calcium hydroxide or calcium oxide powder to the alpha-tricalcium phosphate powder exceeds 50wt.%, a kneaded mixture having flowability is not obtained when the powder agent is kneaded with the curing liquid and the filling workability to the omitted part or gap part of a bone or tooth becomes inferior. When said compounding ratio is below 80 equivalent % based on the sum of the number of the acid equivalents of the curing liquid, it is unpref. since calcium hydroxide or calcium oxide generates the neutralizing reaction with the curing liquid to be lost from a cured substance and the stimulation for forming secondary hard tissue lowers.

Patent
11 Nov 1987
TL;DR: In this paper, 3-80 parts water is mixed to 10-90 parts granular CaCO3, 0-90 part soda lime powder and 0 -90 parts hydraulically elutriated clay or bentonite powder and the mixture is mixed by a kneader.
Abstract: PURPOSE:To make portable water weak alkaline by forming a porous calcium composition from both an inclusion of calcium carbonate, calcium oxide or calcium hydroxide and silicate glass and kaoline clay mineral. CONSTITUTION:3-80 parts water is mixed to 10-90 parts granular CaCO3, 0-90 parts soda lime powder and 0-90 parts hydraulically elutriated clay or bentonite powder and the mixture is mixed by a kneader. Thereafter a granulated material of about 0.1-10mm is prepared by a granulator or the like. Then after it is subjected to drying treatment to dehydrate water content, it is heated from ordinary temp. in the calcination conditions of about 100-200 deg.C/Hr, heated and held at 500-1,200 deg.C and cooled. This calcined material is slowly added to water and immersed and thereafter it is taken out and dried at 100-200 deg.C. This calcined material is immersed into water and calcium ion is eluted and allowed to act as a mineral resource.

Patent
17 Sep 1987
TL;DR: In this article, the authors presented a recipe for the preservation of durability of minced fish by blending a saccharide such as sugar, sugar alcohol, etc., with specific amounts of an organic acid salt such as sodium citrate and a calcium compound such as calcium hydroxide.
Abstract: PURPOSE:The titled composition capable of extremely effectively preventing shortening of durability of minced fish meat, obtained by blending a saccharide such as sugar, sugaralcohol, etc., with specific amounts of an organic acid salt such as sodium citrate, etc., and a calcium compound such as calcium hydroxide. CONSTITUTION:One or more saccharides such as sugar a sugaralcohol (e.g. sorbitol, etc.), etc., is blended with 1-50wt% based on the saccharide of one or more organic acid salts such as sodium citrate, sodium succinate, sodium malate, etc., and 0.1-7wt% one or more calcium compounds such as calcium hydroxide, calcium oxide, calcium chloride, calcium acetate, calcium lactate, etc., to give the aimed composition. When the composition is blended with minced fish meat raw material, kept in cold storage, thawed after several months and processed into KAMABOKO (boiled fish paste), a product having improved crispness and elasticity is obtained.

Patent
12 Mar 1987
TL;DR: In this article, a sulfonic acid with an excess of calcium oxide or hydroxide over the stoichiometry in a liquid medium comprising a hydrocarbon or a halohydrocarbon, methanol and a C3 or C4 alcohol is prepared by reacting the resultant product with carbon dioxide and recovering the resultant calcium complex.
Abstract: Soluble organic calcium complexes are prepared by (a) reacting a sulfonic acid with an excess of calcium oxide or hydroxide over the stoichiometry in a liquid medium comprising a hydrocarbon or a halohydrocarbon, methanol and a C3 or C4 alcohol, in the presence of a nitrogen compound having a long hydrocarbon chain, (b) reacting the resultant product with carbon dioxide and (c) recovering the resultant calcium complex.

Patent
10 Mar 1987
TL;DR: In this article, the authors used lime milk to replace carbonated calcium hydroxide and restore an alkalinity which protects the reinforcing iron against oxidation, and injected lime milk in drilled holes.
Abstract: The object is to rehabilitate concrete by dispersing lime milk to replace carbonated calcium hydroxide and thereby to restore an alkalinity which protects the reinforcing iron against oxidation. The lime milk can be injected as such. However, deposits of calcium hydroxide or calcium oxide can be provided in drilled holes and water in which the calcium hydroxide, possibly formed from the calcium oxide, distributes itself can be injected. Agents which increase the solubility of the calcium hydroxide, lubricants and even another hydroxide, preferably potassium hydroxide, can be added.