10 results about "Calcium complex" patented technology

The invention relates to the technical field of pet food, in particular to an eye-benefiting and liver-protecting fermentation type canine nutrient and a preparation method thereof, and the eye-benefiting and liver-protecting fermentation type canine nutrient comprises the following components: a liver-protecting component, an eye-benefiting component, a chitosan-calcium compound solution, beer yeast powder, honey, lactobacillus plantarum freeze-dried powder and bacillus subtilis freeze-dried powder. Porous starch of the liver protection component carries and protects N-acetylcysteine, and carnosine and quercetin modified by zein remove fermentation byproducts. The eye benefiting component is loaded and protected by octenyl succinic acid modified starch, and the dispersity and the stability of the xanthophyll are improved by grafting a hydrophobic cavity of sulfobutyl-beta-cyclodextrin. The laccase fixed on the surface of the porous starch catalytically oxidizes phenolic hydroxyl groups in a tannic acid-gelatin network on the surface of the eye benefiting component by using dissolved oxygen, a protective shell is formed by in-situ crosslinking and curing, and a chitosan-calcium compound solution closes the physical distance between the laccase and the tannic acid-gelatin network, so that the enzymatic oxidation reaction rate is increased.

This application provides a method for deep removal of calcium impurities from scandium oxide, belonging to the field of rare earth metal oxide purification. The method includes: dissolving scandium oxide raw material containing calcium impurities to obtain a calcium-containing scandium solution; adding a pH adjuster to the calcium-containing scandium solution to obtain a first scandium solution; reacting the first scandium solution with phosphoric acid and / or phosphate to obtain a second scandium solution and solid calcium phosphate; reacting the second scandium solution with a complexing agent to obtain a third scandium solution; reacting the third scandium solution with oxalic acid and / or sodium oxalate to obtain scandium oxalate crystals and a calcium complex solution; adding a strong acid solution to the calcium complex solution; and calcining the scandium oxalate crystals to obtain scandium oxide. Through calcium phosphate precipitation-complexation-crystallization, not only can calcium impurities be deeply removed from scandium oxide products, but impurities such as iron, titanium, and zirconium can also be removed, resulting in scandium oxide products with a purity of over 99.99%.

The invention discloses a method for improving the purity of calcium sulfate in a process for preparing calcium sulfate from ardealite, which comprises the following steps: mixing ardealite with an organic solvent to obtain ardealite turbid liquid; adding a composite solvent into the phosphogypsum suspension to obtain a mixed solution; a main substance in the mixed solution is a chelate formed by an organic solvent and calcium ions. And heating and stirring the obtained mixed solution to react, and filtering to obtain a clear calcium complex solution. And adding a surfactant and a decomplexing, purifying and absorbing composite functional agent into the clear calcium complex solution, heating and stirring to react, and performing suction filtration and separation to obtain the high-purity calcium sulfate crystal. In the process of crystallizing and separating out calcium sulfate, impurities such as partial heavy metal ions, phosphorus and fluorine are attached to the surfaces of crystals, so that the purity of calcium sulfate is reduced. A surfactant and a decomplexing and purifying composite functional agent are added to improve the dispersing performance of the calcium sulfate crystal, and impurities such as heavy metal, phosphorus and fluorine in a solution are adsorbed to improve the purity of the calcium sulfate crystal.

The present invention provides a biodegradable grease composition comprising a base oil, a thickener, and an inorganic powder, wherein the base oil comprises a polyol ester oil and the thickener comprises a calcium complex soap.

This invention relates to the field of edible mushroom cultivation technology, and discloses a mushroom cultivation medium based on fungi grass modified with tannin-calcium complexation and containing a plant-derived biochar framework, as well as its preparation method. The medium uses fungi grass fiber as the main carbon source. The fungi grass fiber is complexed and modified with tannins and soluble calcium salts to form a complexed and solidified layer on its surface, thus delaying later spoilage and structural failure. Plant-derived biochar particles are introduced as an inert physical support framework to enhance the structural stability and long-lasting aeration of the medium. The medium preferably employs a dual-particle size structure of coarse fiber and fine powder, and is combined with wheat bran / rice bran, calcium regulators, and gypsum or lime to maintain high strength and aeration of the mushroom logs under multi-flush fruiting conditions, reducing the risk of collapse, soft rot, and contamination by microorganisms, and improving later yield retention and cumulative yield.

The invention provides a supported zinc-calcium complex as well as a preparation method and application thereof. By adopting the one-step leaching method of the carbide slag and the zinc oxide ore, ammonia released when the carbide slag is dissolved under the action of ammonium chloride is fully utilized, and zinc ions in the zinc oxide ore are leached by utilizing the ammonia component, so that the situation that ammonia water is additionally added when the zinc oxide ore is leached can be avoided, and the preparation process is simplified; meanwhile, zinc and calcium refined clear liquid obtained through leaching is subjected to a one-step pyrolysis and carbonization method, the interaction between free ammonia generated during pyrolysis of the zinc-ammonia complex and ammonia consumed during carbonization of soluble calcium is fully utilized, additional addition of ammonia during calcium carbonization is avoided, and the energy consumption of ammonia distillation of the zinc-ammonia complex is reduced; the preparation method is simple in technological process, and the cost of the calcium carbonate carrier and ammonia is greatly reduced; meanwhile, the leaching liquid ammonium chloride and the carbon dioxide can be recycled, so that the input cost of the leaching liquid and the carbon dioxide is reduced, and the emission of nitrogen-containing waste liquid is reduced.

To provide a carbonate apatite coated magnesium material that exhibits interference colors, enabling both improved biocompatibility and device identification, and a method for producing the same. [Solution] An aqueous solution is prepared containing a calcium complex at a concentration higher than 0.2 mol / L and a phosphate solution in a concentration of 0.5 to 1.25 times that of the calcium complex (S100). A carbonate is dissolved in the aqueous solution containing the calcium complex and phosphate at the above concentrations to prepare a coating treatment solution (S102). The coating treatment solution is heated (S104). A magnesium material having a surface roughness Ra of 0.05 μm to 2.0 μm is immersed in the heated coating treatment solution (S106). The magnesium material is then coated with apatite mainly composed of carbonate apatite to a film thickness that exhibits the desired interference color (S108).

The application discloses a probiotic calcium tablet and a preparation method thereof. The probiotic calcium tablet comprises the following raw materials in parts by weight: a calcium compound 40-60 parts; a probiotic compound 10-20 parts; an absorption promoter 15-25 parts; a stabilizer 8-15 parts; and a flavor modifier 5-10 parts. The application can solve the problems of low calcium absorption rate and easy inactivation of probiotics in the prior art.

The invention belongs to the technical field of agricultural resource utilization and soil improvement, and particularly relates to a method for preparing a soil conditioner by mixing peanut shells and egg shells and application of the soil conditioner. The soil conditioner is prepared from the following raw materials: 35-47 parts of modified peanut shell powder; 20-30 parts of modified egg shell powder; 6-14 parts of a humic acid-calcium complex; 5-12 parts of modified zeolite; 1.5 to 3.5 parts of a chitosan-alginic acid compound; and 0.2 to 0.8 part of a rhizosphere adjusting component.

To provide a method for efficiently recovering calcium from a calcium-containing compound, and to provide a calcium complex.SOLUTION: The method for recovering calcium includes a step of preparing a calcium-containing compound and a step of bringing the calcium-containing compound into contact with a carboxylic acid having two or more and three or less carboxy groups and having one or more amino groups or hydroxy groups in water to generate a complex of calcium ions and the carboxylic acid, and can further include a step of bringing the complex into contact with an acid or a salt thereof in water to generate a calcium salt. The calcium complex contains calcium ions and a carboxylic acid having two or more and three or less carboxy groups and having one or more amino groups or hydroxy groups.SELECTED DRAWING: None