377 results about "Magnesium chloride hexahydrate" patented technology

Fire-retardant powder comprising at least 30% by weight of mono ammonium dihydrogen phosphate and/or di-ammonium monohydrogen phosphate, at least 5% by weight of alkaline bicarbonate, at least 3% by weight of silica, and at least 5% by weight of a compound selected from the group consisting of: sodium chloride, potassium chloride, potassium bromide, potassium sulfate, magnesium carbonate hydroxide pentahydrate, magnesium chloride hexahydrate, iron(II) sulfate heptahydrate, zinc (II) chloride, and combinations thereof. The invention also relates to building materials preferably comprising natural fibers and comprising at least 5% by weight, and at most 30% of a powder according to the invention.

The invention discloses a process for preparing high purity magnesium oxide products, which consists of using brine containing magnesium chloride from sea, lakes or crude magnesium chloride hexahydrate as raw material, purifying the brine through vacuum crystallization method, removing boron, sulfate radicals, calcium ions and soluble impurity substance in the raw material, finally carrying out dynamic calcinations.

The invention discloses a polyester fabric hydrophilic antistatic agent which consists of the following components by weight percentage: 8 to 18 percent of DMT, 38 to 48 percent of glycol, 16 to 26 percent of polyoxyethylene, 6 to 16 percent of zinc acetate, 4 to 14 percent of diantimony trioxide and 3 to 8 percent of triphenyl phosphate, and the total amount of all the components is 100 percent. Interchange esterification and condensation polymerization are carried out to all the components so as to obtain the hydrophilic antistatic agent. The hydrophilic antistatic agent is adopted to prepare fabric-washing treatment liquid, and during the process the magnesium chloride hexahydrate is added and a two-dipping-two-rolling method is adopted to deal with the polyester fabric, and then the fabric is dried so as to complete the later finishing to the terylene fabric. The hydrophilic antistatic agent of the invention has stable antistatic capability, good washing resistance and low price. Adopting the antistatic agent to the later finishing of dacron can save the baking process of applied process so as to reduce energy cost and enhance the wearing property of polyester fiber and corresponding fabrics so as to meet the simulation requirement to polyester fabrics of costume fabric market.

The invention discloses a resourceful treatment method for fused salt chlorination residues. According to the method, high-oxidizability alkaline waste salt water generated through fused salt chlorination tail gas purification or chloro-alkali chemical industry tail gas absorption waste liquor is used for treating leachate of the fused salt chlorination residues so as to recover NaCl, magnesium chloride hexahydrate and ferro-manganese residues, and low-cost resourceful treatment for the fused salt chlorination residues is achieved. Waste is treated with waste, the pollution problem of the fused salt chlorination residues is solved, NaCl, MgCl2 and ferro-manganese raw materials in the fused salt residues are recovered and used, and the resourceful treatment method has good economic benefits, has great significance in eliminating development bottleneck of technology application of preparing TiCl4 through titanium residue fused salt chlorination, can be widely applied to domestic and overseas fused salt chlorination-magnesium thermal electrolysis titanium sponge and fused salt chlorination titanium sponge enterprises and has wide popularization prospects.

The invention discloses a temperature-resistant foam-stabilizing type low interfacial tension foaming agent and a preparation method thereof. The temperature-resistant foam-stabilizing type low interfacial tension foaming agent comprises the following raw material components by mass percent: 0.18-0.25% of an anionic surfactant, 0.05-0.1% of an amphoteric surfactant, 0.08-0.15% of a nonionic surfactant and 99.2-99.69% of mineralized water, wherein the anionic surfactant is one of fatty acid polyoxyethylene ether sodium sulfate and disodium laureth sulfosuccinate; the amphoteric surfactant is one of erucamidopropyl sultaine and cocoamidopropyl betaine; the nonionic surfactant is one of coconutt diethanol amide and polyoxyethylene ether; the mineralized water is a mixed water solution of sodium chloride, sodium sulfate, sodium hydrogen carbonate, anhydrous calcium chloride and magnesium chloride hexahydrate. The temperature-resistant foam-stabilizing type low interfacial tension foaming agent, disclosed by the invention, has the advantages of high temperature resistance, good foam stability, low interfacial tension and the like.

The invention provides preserving fluid of hepatic cells for a biological artificial liver and a preparation method thereof. The preserving fluid is a solution compounded by ultrapure water. The solution contains the following components within the concentration range: 15-25mmol/L of disodium hydrogen phosphate, 1-10mmol/L of sodium hydrogen phosphate dehydrate, 4-6mmol/L of potassium citrate monohydrate, 10-30mmol/L of sodium chloride, 5-10mmol/L of magnesium chloride hexahydrate, 3-10mmol/L of disodium adenosine triphosphate, 1-5mmol/L of reducing glutathione, 0.1-0.5mmol/L of alpha-lipoic acid, 100-150mmol/L of trehalose (C6H12O5), 200/0.510-50g/L of hydroxyethyl starch and 2-10mg/L of matrine. The preparation method of the preserving fluid comprises the following steps of: accurately weighing all components according to the concentration requirements of the components, wherein the alpha-lipoic acid is weighed in a dark place; completely dissolving the other components except the alpha-lipoic acid by using the right amount of ultrapure water; sufficiently dissolving the alpha-lipoic acid in the dark place; and adding the ultrapure water to full dose. The preserving fluid can well protect the cell activity of the hepatic cells for the biological artificial liver and the special functions of the hepatic cells at low temperature so as to satisfy the short-term low temperature preservation of a large-scale hepatic cell bank for the biological artificial liver and/or the hepatic cell protection in the long-distance transportation process.

The invention provides a waterproof film spraying material, and a preparation method and application thereof. The preparation method comprises the following steps: adding 1-20 parts of 60 wt% above glycerol into 100 parts of magnesium acrylate monomer water solution, uniformly mixing, adding 0-30 parts of magnesium chloride hexahydrate, and evenly mixing until no visible agglomerated particles exist in the solution, thereby obtaining the waterproof film spraying material. The waterproof film spraying material, which is used as a main material, can be sprayed and mixed with an oxidizer and a reducer to instantaneously form a gel, and the gel is bonded to the treated base surface to form a film layer. The waterproof film spraying material can not crystallize in a high-altitude low-temperature envelopment, thereby ensuring the continuity of the main material and effectively ensuring the smoothness of the waterproof film spraying construction in the region.

The invention discloses a new typed heat solidifying and water-tolerant koenenite architectural material without returning halogen and making method, which comprises the following parts: 100g 80%-85% light-burnt magnesia, 18-25g not less than 44% magnesium chloride hexahydrate, 10-45g II-grade coal dust, 15-20g supernatant reacted by 25-35g sulfuric acid and 25-35g refuse, water, foam with grain size not more than 1mm.

The invention provides a method for preparing gypsum whiskers, magnesium chloride, ammonium magnesium phosphate and ammonium chloride from phosphate tailings. The method comprises the following steps:adding an acidizing fluid into phosphate tailings in batches, dropwise adding hydrochloric acid to react, separating silicon slag and an acidolysis solution, and cooling and crystallizing the acidolysis solution to obtain calcium chlorophosphate and acidolysis solution; adding concentrated sulfuric acid into the acidizing fluid, dropwise adding the acidolysis fluid for reaction, and performing centrifugal separation after reaction to obtain gypsum whiskers and the acidizing fluid; heating and concentrating the acidizing fluid, crystallizing to obtain a magnesium chloride solution, and centrifugally separating the magnesium chloride solution to obtain magnesium chloride hexahydrate and a magnesium chloride mother liquor; adding ammonium sulfate and calcium chlorophosphate into the magnesium chloride mother liquor for reaction, filtering to obtain gypsum and a filtrate after the reaction is finished, dropwise adding ammonia water into the filtrate, cooling and filtering to obtain ammonium magnesium phosphate and an ammonium chloride solution; heating, concentrating, and cooling the ammonium chloride solution to obtain ammonium chloride crystals and a crystallization mother liquor, and after centrifugal separation, preparing a 5 to 20% ammonia water solution from the crystallization mother liquor and ammonia water. According to the technical scheme, the recovery rate of phosphorus reaches 99%, and the recovery rate of calcium reaches 95%.

The invention provides a method for removing trace impurities in magnesium chloride by using waste brine discharged in potassium chloride production as a raw material by an improved two-stage recrystallization technique. Each stage of the crystallization technique comprises the following steps: 1) free settling, 2) natural evaporation and crystallization, 3) size-grading selective recycling, 4) filtration, (5) saturated magnesium chloride solution washing and the like. By using the method, trace impurities, such as boron, sulfur, ferrum and the like, in magnesium chloride can be reduced to less than 5 ppm, and the purity of the product magnesium chloride hexahydrate is higher than 99.5%. The invention has the characteristics of low energy consumption and low cost, is simple to operate, and is applicable to refining magnesium metal, flame retardant, magnesium hydroxide or any other raw material by an electrolytic process.

The invention discloses a synthesis method the a light stabilizer bis(1-octyoxy-2,2,6,6-tetramethyl-4-piperidyl) sebacate, belongs to the field of organic chemical synthesis. The bis(1-octyoxy-2,2,6,6-tetramethyl-4-piperidyl) sebacate is the material, ethanol solution is the solvent, and magnesium hydrate or magnesium chloride hexahydrate is the catalyst. Oxidation reaction is conducted with the action of aquae hydrogenii dioxidi which is used as the oxidant to generate bis(2,2,6,6-tetramethyl-1-piperidinyloxy-4-yl)sebacate free radicals. Then molybdenum trioxide is used as the catalyst, normal octane is used as the material and solvent to react with the bis(2,2,6,6-tetramethyl-1-piperidinyloxy-4-yl)sebacate free radicals to obtain the light stabilizer HS-112. The method uses two steps to synthesize the HS-112. The process is simple, the reaction time is short the side effects are few, the pollution is minimal, the production cost is low, the reaction yield rate is high, and therefore the industrial application prospect is good.

The invention belongs to the field of material science, and relates to a method for preparing high-strength alpha-semi-hydrated gypsum from flue gas desulfurization gypsum. The method comprises the following steps: 1) preparing desulfurization gypsum slurry: sufficiently mixing the flue gas desulfurization gypsum and water according to a solid-liquid mass ratio of 1: (4-10), and warming to 80-95 DEG.C; 2) adding a habit modifier to prepare mixed slurry: adding the habit modifier in the desulfurization gypsum slurry according to a condition that the mass ratio of the flue gas desulfurization gypsum to the habit modifier is 1: (0.5-1.5), wherein the habit modifier is a mixture of magnesium chloride hexahydrate and magnesium sulfate hexahydrate in a mass ratio of 1: (0.1-0.2), continuously warming to boil, and refluxing; 3) adding a crystal habit modifier: adding the crystal habit modifier in the mixed slurry obtained in the step 2) according to a condition that the mass ratio of the flue gas desulfurization gypsum to the crystal habit modifier is 1: (1%-5%); and 4) crystal transforming. The uniform short hexagonal prism alpha-semi-hydrated gypsum can be prepared by the method simple in process, the rupture strength reaches 14.4 MPa, and the compressive strength reaches 44.5 MPa.

The invention discloses a method for preparing magnesite products. The method comprises the following steps: (1) taking a veneer as a mould; (2) evenly mixing magnesium oxide, magnesium chloride hexahydrate, plant fiber powder, modified liquid and an adhesive at room temperature and forming slurry through stirring; (3) pouring the formed slurry into the mould, and solidifying to obtain the magnesite products. The method has the advantages of omitting the processes such as moulding, demoulding and decorating, and the method can realize the large-scale production.

The invention discloses a cell preservation solution. The cell preservation solution is a solution prepared from ultra pure water. The solution is a paraform preservation solution. The solution also comprises 0.4-0.8wt% of glutaraldehyde, 0.05-0.1mol/L potassium citrate, 0.035-0.15mol/L sodium diacetate, 0.1-0.3mol/L magnesium chloride hexahydrate, 0.08-0.4mol/L sodium chloride, 0.003-0.005mol/L alpha-lipoic acid, 0.08-0.12mol/L trehalose and 3-5mg/L matrine. The pH value of the cell preservation solution is 7.1-7.4, and the osmotic pressure of the cell preservation solution is 290-315mmol/L. According to the preservation solution disclosed by the invention, the cell preservation time is greatly prolonged, besides, the preparation method is simple, and the application range is wide.

The invention relates to a method for preparing anhydrous magnesium chloride by utilizing magnesium chloride hexahydrate. The method comprises the following steps of (1) mixing and ball-milling the magnesium chloride hexahydrate and ammonium chloride to obtain ammonium camallite or mixture containing the ammonium camallite, (2) heating the mixture and performing preliminary dehydration to preparelower-water ammonium camallite or mixture containing the lower-water ammonium camallite, and (3) placing a covering on the product obtained in the step (2) and performing heating and reaction to prepare anhydrous magnesium chloride. The method for preparing the anhydrous magnesium chloride by utilizing the magnesium chloride hexahydrate can shorten production process of the anhydrous magnesium chloride, improve production efficiency and reduce production cost and input cost for environmental protection.

The technological process of preparing potassium nitrate and magnesium chloride includes the following steps: adding powdered magnesite into nitric acid solution to react, adding potassium chloride for reacting with coarse potassium nitrate, adding additive, maintaining the temperature to deposit, filtering, cooling to crystallize, centrifugally separating and drying to obtain potassium nitrate product for farm use; mixing mother liquor I and mother liquor III, evaporating to concentrate, and cooling to crystallize and separate magnesium chloride hexahydrate crystal; cooling mother liquor II to crystallize, and centrifugally separating to obtain coarse potassium nitrate and mother liquor III. The technological process is simple, low in power consumption, hermetically circulated and without waste produced.

The invention discloses a silicon acrylic emulsion modified magnesium-containing inorganic adhesive for straws. The adhesive is prepared from, by weight, 100 parts of magnesium chloride hexahydrate, 44-61 parts of magnesium sulfate heptahydrate, 218-298 parts of light calcined magnesia, 167-202 parts of water, 10-43 parts of silicone acrylic emulsion and 4-9 parts of dispersant. Adhered products prepared with the adhesive are high in water resistance, strength and toughness and appropriate in coagulation rate. The invention further discloses a preparation method of the silicone acrylic emulsion modified magnesium-containing inorganic adhesive. The method includes steps: feeding water into a reaction kettle, heating, adding the magnesium chloride hexahydrate, and stirring at a constant speed to obtain a magnesium chloride solution; slowly adding the magnesium sulfate heptahydrate into the magnesium chloride solution, and stirring at a constant speed; adding the light calcined magnesia into the reaction kettle, and stirring at a constant speed; slowing dripping the silicone acrylic emulsion into the reaction kettle, adding the dispersant after dripping is finished, stirring and cooling to obtain the adhesive.

The invention discloses an Ackerman myxobacteria culture medium and a preparation method thereof. The Ackerman myxobacteria culture medium per liter is prepared from the following raw materials: 0.4g of monopotassium phosphate, 0.53g of disodium hydrogen phosphate, 0.3g of ammonium chloride, 0.3g of sodium chloride, 0.11g of calcium chloride, 0.1g of magnesium chloride hexahydrate, 4g of sodium bicarbonate, 0.5mg of resazurin, 1mL of an acid trace solution, 1mL of an alkali trace solution, 1mL of a vitamin solution, 37g of a brain heart infusion, 1.5g of xylooligosaccharide, 5g of cyclodextrin and 30g of solarbio protease-enzymolyzed egg white. The culture medium is capable of solving the problem of slow growth of Ackerman myxobacteria, and significantly improving the growth rate and the bacteria solution concentration of Ackerman myxobacteria.