10 results about "Low calcium" patented technology

The invention provides an organic silicon slurry residue treatment and calcium chloride recovery method based on lime milk circulating hydrolysis, and relates to the technical field of hazardous waste treatment and resource recycling, and the method comprises the following steps: S1, preparing lime milk; s2, circulating hydrolysis reaction; s3, slag-liquid separation and circulation; s4, repeated hydrolysis and concentration; s5, refining calcium liquid and extracting a finished product; according to the method, a lime milk recycling system for returning the filtrate to the lime milk stirring pool is constructed, and a scientific lime powder supplement amount calculation method is combined, so that the consumption of fresh lime powder is greatly reduced, and compared with a traditional single-time feeding process, the consumption of the lime powder can be reduced by 30% or above; meanwhile, the concentration of calcium chloride is stably increased to 30% or above through multiple times of circulating hydrolysis and concentration, the core problems of low calcium chloride concentration and low recovery value in a traditional process are solved, and efficient enrichment and recovery of calcium resources are achieved.

The application provides a preparation method of calcium hyaluronate, which comprises the following steps: adding sodium hyaluronate into an acidic displacement solution containing calcium salt, performing displacement to obtain calcium hyaluronate precipitate; washing the precipitate with an acidic washing solution; dehydrating the washed precipitate with a neutral dehydration solution, and vacuum drying to obtain calcium hyaluronate powder; wherein the organic medium concentration in the displacement solution is 50-90 wt%, preferably 60-80 wt%, the calcium salt concentration is 0.5-4 wt%, preferably 1-3 wt%, the organic medium concentration in the washing solution is 50-90 wt%, preferably 60-80 wt%, and the organic medium concentration in the dehydration solution is greater than or equal to 90 wt%. The application obtains calcium hyaluronate finished product through high-efficiency displacement, and solves the problems of multiple displacement times, long time consumption, large calcium salt consumption, low calcium displacement efficiency and turbidity of calcium hyaluronate solution in the current calcium hyaluronate production process.

The present disclosure provides a potassium aluminosilicate-based nanogel precursor additive and use thereof in a low calcium system-based geopolymer, belonging to the technical field of geopolymer additives. In the present disclosure, the potassium aluminosilicate-based nanogel precursor additive has a high-activity and potassium aluminosilicate-based short-chain structure, and is a precursor of the low calcium system-based geopolymer. The additive includes K2O, SiO2, and Al2O3, and has a K / Si molar ratio of 1.0 to 4.0 and an Al / Si molar ratio of 0.25 to 1.5. The potassium aluminosilicate-based nanogel precursor additive can be added to a matrix material of the low calcium system-based geopolymer, to effectively optimize a hydration process, balance an internal reaction, and improve a pore structure of the low calcium system-based geopolymer such as metakaolin, thereby improving mechanical properties. The additive effectively avoids harsh curing conditions, uneven hydration reaction.

The invention discloses a method and a device for recovering calcium in high-hardness water based on aluminum salt hydrolysis and dissolution, and the method is characterized in that the hydrolysis of the aluminum salt is advanced before the crystallization reaction of calcium carbonate, amorphous aluminum hydroxide generated by the hydrolysis is used as a seed crystal, and the seed crystal induced crystallization of the high-hardness water is carried out, so that the conventional homogeneous phase crystallization is inhibited; therefore, the problem of low calcium recovery rate caused by poor settling performance of a calcium carbonate crystallization product in a homogeneous crystallization process is solved; in order to realize cyclic utilization of the aluminum salt and improve the purity of the crystallization product, the amorphous aluminum hydroxide in the crystallization product is dissolved out in the form of metaaluminate by using the amphoteric characteristics of the amorphous aluminum hydroxide and is recycled as the aluminum salt after pH regulation. The method solves the problem of low recovery rate caused by poor settling performance of the crystallization product during recovery of the high-hardness water calcium carbonate crystallization calcium, realizes cyclic utilization of the aluminum salt, and improves the purity of the crystallization product.

1. Name of the designed product: packing bag (low calcium salt). 2. Use of the designed product: for packing edible salt. 3. Design points of the designed product: combination of shape and pattern. 4. Picture or photo showing the design points: front view. 5. The designed product is a thin product, and the left view, right view, top view and bottom view are omitted.

The invention relates to the technical field of flue gas pollution prevention and control, discloses a high-activity calcium-based powdery desulfurizer and a preparation method thereof, and aims to solve the problems of invalid consumption, low calcium utilization rate and difficulty in resource utilization of desulfurization byproducts caused by high-concentration CO2 competitive reaction of an existing calcium-based desulfurizer. According to the invention, an interface layer with a SO2 selective recognition function is constructed on the surface of quick lime by adopting a modifier compounded by an amino silane coupling agent and organic carboxylic acid, and effective rejection of CO2 and preferential adsorption of SO2 are realized by utilizing anchoring and screening effects of amino and electronic regulation and control and capture effects of carboxyl; according to the present invention, by combining the pre-complexing, the pressurized digestion and the heat treatment activation process, the high specific surface area is maintained while the thermal stability of the modification layer is reinforced, the prepared desulfurization agent can perform stable desulfurization in the wide temperature range of 30-350 DEG C, the competitive consumption of CO2 is inhibited, the calcium utilization rate is improved, and the desulfurization by-product mainly comprises calcium sulfate so as to be directly subjected to resource utilization.

This invention relates to the field of dairy processing technology, and discloses a low-salt, high-calcium cheese and its preparation method. The cheese uses pasteurized milk as the main raw material, combined with compound edible salt, rennet, specific fermentation strains, potassium citrate, casein phosphopeptide-whey calcium chelate, lactase, and novel functional excipients. The preparation method includes steps such as raw material pretreatment and standardization, fermentation and lactose degradation, curing and cutting, heating and whey removal and salting, molding, pressing and aging stabilization, functional enhancement and quality control. Through innovative process coupling and the introduction of new technologies, the cheese achieves synergistic optimization of low salt, high calcium, sugar-free, and lactose-free properties, while simultaneously improving product functional characteristics and storage stability. This invention solves the technical problems of existing cheeses, such as high salt content, low calcium absorption and utilization rate, lactose residue, poor texture and flavor, limited functionality, and easy deterioration during storage, making it suitable for industrial production and consumption by all population groups.

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 present application relates to the technical field of flue gas pollution prevention and control, and discloses a high-activity calcium-based powdery desulfurizer and a preparation method thereof, aiming to solve the problems of invalid consumption, low calcium utilization rate and difficulty in resource utilization of desulfurization by-products of the existing calcium-based desulfurizer caused by high-concentration CO2 competition reaction, the modifier of amino silane coupling agent and organic carboxylic acid is used to build an interface layer with SO2 selective recognition function on the surface of quicklime, the effective repulsion of CO2 and the preferential adsorption of SO2 are realized by using the anchoring and screening effect of amino and the electronic regulation and capture effect of carboxyl; the pre-complexation, pressurized digestion and heat treatment activation processes are combined to strengthen the thermal stability of the modification layer while maintaining the high specific surface area, the prepared desulfurizer can stably desulfurize in the wide temperature range of 30-350 DEG C, the competition consumption of CO2 is inhibited, the calcium utilization rate is improved, and the desulfurization by-products are mainly calcium sulfate, which can be directly resourceized.

The application discloses an iminodisuccinic acid salt product with high copper chelation value and high calcium chelation value, and adopts a maleic anhydride process to produce the iminodisuccinic acid salt product, wherein the mass dosage molar ratio of L-aspartic acid, maleic anhydride and sodium hydroxide in raw materials is controlled to be 1:(1.03-1.06):(3.4-3.7), and the holding temperature of an ammonia addition reaction is controlled to be 100-105 DEG C, and the holding time is 12-14 hours. The iminodisuccinic acid salt product can make the calcium chelation value reach 330 mg / g or more while ensuring that all indexes of the product meet the requirements of industry standards, and can greatly improve the situation that a user adds a large amount of medicament and adds frequently due to the low calcium chelation capacity of the iminodisuccinic acid salt in daily use.