113 results about "Magnesium" patented technology

A wearable firestarter has a sparking material including a wearable portion and a friction element including a wearable portion. The friction element's wearable portion is releasably connected to the sparking material's wearable portion. The wearable portions may be rings or a bracelet sized to closely encompass a wearer's appendage. A portion of the wearable portions may be made of magnesium. The sparking material may be made of ferrocerium. The friction element may be made of file steel. The wearable portions may form grippable surfaces that extend away from the sparking material and the friction element.

The invention discloses a rare earth aluminum alloy wire for thermal spraying, which belongs to the technical field of thermal spraying. The wire contains aluminum, zinc, magnesium and the like, and also contains two or more than two rare earth metal elements, and the total weight of rare earth metal elements accounts for 0.51-5.00% of the total weight of the wire. The invention has the advantages that the processing and manufacturing process is convenient and the product coat cost is moderate; and the metal thermal spraying coating made from the wire has good adhering capability, good physical and mechanical property, good corrosion-resistant property, and moderate construction cost, and is favorable for popularization and application.

The invention discloses a solution preparation method for producing electrolytic manganese or manganese dioxide from low-grade manganese oxide ores. The solution preparation method comprises the following steps: pre-soaking low-grade manganese oxide ore powder in anode liquor discharged by an electrolytic system, removing non-manganese acid consumption substances such as iron, aluminum, calcium and magnesium, and filtering to obtain pre-soaking liquor and pre-soaking residues; uniformly mixing the pre-soaking residues and a carbon reducing agent such as pulverized coal, adding concentrated sulfuric acid, uniformly mixing to obtain mixed material; controlling initial sulfur acid concentration in the mixed materials to be higher than or equal to 70%, and automatically heating mixed material through reaction heat so that the mixed material is reduced and cured; mixing and leaching the cured material with the pre-soaking liquor, oxidizing and neutralizing soaked ore pulp, purifying and removing impurities; mixing a manganese sulfate solution obtained by filtering with an appropriate amount of an electrolysis additive, and performing electrolysis to produce metal manganese or manganese dioxide. According to the solution preparation method, since carbon reducing agents such as cheap and easily available coal powder are utilized for directly reducing manganese oxide ores at a low temperature, the energy consumption is low, the cost is low, and a smoke gas pollution problem is avoided; anode liquor is used for pre-soaking and removing non-manganese acid consumption substances such as iron, aluminum, calcium and magnesium, so that the acid balance of system is realized and the acid consumption is reduced.

The invention provides cast aluminum alloy high in thermal conductivity. The cast aluminum alloy is composed of, by weight, silicon of 4.0-6.5%, iron of 1.0-3.0%, copper of 0.4-1.0%, magnesium of 0.05-0.15%, manganese of 0.3-0.4%, nickel of 0.4-0.6%, tin of 0.1-0.2%, impurities of 0.05-0.2% and the balance aluminum. The cast aluminum alloy is good in castability and mechanical property, high in thermal conductivity and electrical conductivity and especially suitable for manufacturing automobile spare parts such as LED automobile lamp radiators and heating plates.

The invention provides a welding method aiming at the butt welding of small caliber resistances. The method is applicable to the welding of small caliber steel pipes, wire rods and rings, and also applicable to the contact butt welding of small caliber nonferrous metals such as aluminium and magnesium wire rods and pipe products, belonging to the welding technical field. As stainless steel is slow in heat dissipation, the invention proposes a welding technique with intermittent heating and continuous and uneven heat dissipation. The high temperature plastic zone in the welding temperature field obtained by the process is narrow and can be less affected by the contact resistances; the welding shrinkage can be controlled accurately by the process; the welding line moulding has a beautiful appearance; the strength and the through-hole both meet the requirements, thus greatly improving the qualification rate of products.

The invention relates to the field of lithium carbonate preparation, in particular to a method for extracting lithium from brine to prepare battery-grade lithium carbonate by an ion exchange method. The method includes the steps of 1), removing magnesium by a coprecipitation method; 2), adsorbing to extract the lithium by a manganese adsorbent; 3), preparing the battery-grade lithium carbonate, namely adding alkaline liquor into a desorption solution in the step 2), regulating a pH value to 7-12, producing manganese hydroxide precipitate, filtering the manganese hydroxide precipitate, concentrating filtrate until the lithium content reaches 20-30 g/L, filtering to remove sodium chloride, adding a saturated sodium carbonate solution to react, filtering, and subjecting filter cakes to water scrubbing so as to obtain the battery-grade lithium carbonate. The method has the advantages that hydrotalcite is obtained after magnesium removal, so that the problem of recycling the magnesium in the brine is solved; the content of various impurity ions in the desorption solution can be controlled effectively by removing the magnesium and extracting the lithium by adsorption sequentially, and then the battery-grade lithium carbonate is prepared.

The invention relates to a sterilizing composition containing validamycin and tebuconazole, which comprises the following raw materials in percentage by weight: 1-50% of validamycin, 5-80% of tebuconazole, 0.5-10% of lauryl sodium sulfate, 3-5% of phenylethyl phenol polyoxyethylene ether polyoxypropylene ether, 0.5-10% of sodium lignosulfonate, 0.1-5% of xanthan gum, 0.1-3% of defoamer, 0.1-5% of glycol, 0.5-3% of sodium benzoate, 1-10% of magnesium aluminum silicate and the balance water. The sterilizing composition has the advantages of having excellent sterilizing activity, being mainly used for preventing and curing rice sheath blight diseases and having protection and therapeutic effects on paddy rice, thereby being different from other traditional pesticide antimicrobials.

The invention discloses an aluminum plastic plate flame-retardant core layer and an aluminum-plastic plate, and belongs to the technical field of building fireproof materials, wherein the aluminum plastic plate flame-retardant core layer comprises, by weight, 30-50 parts of a matrix resin, 30-40 parts of a flame retardant agent, 0.5-1.5 parts of a flame retardant synergist, 1-2 parts of an anionicsurfactant, 2-4 parts of a compatibilizer, 1-2 parts of an antioxidant, and 0.5-1.5 parts of an antibacterial agent, wherein the matrix resin comprises low density polyethylene, polypropylene, an ethylene-octene copolymer and ethylene-ethyl acrylate according to a weight ratio of 6:2:1:1, and the flame retardant agent comprises magnesium hydroxide and expandable graphite according to a weight ratio of 6:1. According to the present invention, the prepared core layer has good mechanical property, can meet the requirements of the flame retardant B1 grade, and further has antibacterial property;and the aluminum plastic plate prepared from the flame retardant core layer has the good performances of the core layer, and further has the peel strength meeting the standard value.

A member 20 for semiconductor manufacturing equipment includes a base portion 22 and a ceramic member 30 formed on the base portion 22. The ceramic member 30 of the present invention includes a ceramic base 32 containing at least one of magnesium oxide, a magnesium oxide solid solution in which a predetermined component is dissolved in magnesium oxide, and zirconium oxide; and an electrode 34 which is arranged on part of the ceramic base 32 and which contains a ruthenium-aluminum alloy as an electrode component. The ceramic member 30 is a plate-like member and has a structure in which the electrode 34 is embedded therein. The electrode 34 is connected to a feeding member 26 inserted from the underside of the ceramic member 30. Electric power is supplied from the feeding member 26.

The invention discloses an alloy of a high temperature resisting aluminum alloy furnace end and a manufacturing method thereof. The alloy comprises the following elements in parts by weight: 100 parts of aluminum, 3.0-4.0 parts of copper, 3.0-5.0 parts of silicon, 0.9-1.5 parts of manganese, 0-0.7 part of ferrum, 0-1.0 part of nickel, 0-0.25 part of magnesium, 0-0.1 part of zinc, 0-0.15 part of chromium, 0-0.05 part of zirconium, 0-0.05 part of zirconium, 0-0.1 part of antimony and 0-0.75 part of impurities in sum. The manufacturing method comprises the steps of: melting, feeding, smelting and stirring, constant temperature processing, pressure casting, thermal treatment and finishing. The invention has the advantages of solving problems of easiness of foaming, deformation, erosion and the like of the conventional aluminum alloy furnace end efficiently and having reasonable prescription, simple manufacturing method and the like.

The invention relates to a material capable of preventing large grains from being produced in aluminium alloy and a preparation method thereof. The material provided by the invention comprises the following ingredients in percentage by weight: 0.58-0.61% of Mg, 0.03-0.035% of C, 0.75-0.78% of Si, 0.30-0.35% of Mn, 0.1-0.15% of Cr, 0.2-0.24% of Cu, 0.2-0.4% of Fe, 0.03-0.05% of Ti, 0.001-0.0015% of V, 0.05-0.1% of Mo and the balance of Al. The material provided by the invention better realizes that grains in the structure of the aluminium alloy are fine and the growth of the grains is inhibited; and a uniform structure is guaranteed by virtue of a preparation process.

The invention relates to the use of sintered article of Sn-Mg-Al ternary hydrotalcite in adsorbing hexavalent chromium in water, the article is obtained through sintering hydrotalcite 3-8 hours at 400-550 deg C and can realize high adsorbent capacity for hexavalent chromium.

The invention discloses a formula of a fluororubber-ethylene propylene rubber mixing rubber compound, which comprises the following components in parts by weight: 50-70 of ethylene propylene rubber, 30-50 of fluororubber, 8-15 of nitrile buna rubber, 2.5-10 of magnesium oxide, 5-10 of zinc oxide, 0.1-0.5 of accelerant M, 0.2-1 of stearic acid, and 0.2-1 of sulphur. The fluororubber-ethylene propylene rubber mixing rubber compound obtained according to the invention is capable of simultaneously having high medium-resistant property and low-temperature-resistant property; simultaneously, proper elasticity can also be kept.

The invention discloses an air-added brick and a preparation method thereof. The preparation method comprises the following steps: mixing portland cement, fly ash, gypsum, aluminum powder paste, silicon dioxide, magnesium oxide and water to form slurry M; pouring the slurry M and carrying out steam pre-oxidization molding to obtain an air-added brick blank N; cutting the air-added brick blank N to form an air-added brick block; carrying out steam curing on the air-added brick block to obtain the air-added brick. The prepared air-added brick has excellent mechanical strength through the synergistic effect of all the raw materials; meanwhile, the method for preparing the air-added brick is simple and the raw materials are easy to obtain.

The invention relates to a method for preparing nesquehonite whiskers and nano flaky basic magnesium carbonate. The method is characterized in that sodium bicarbonate and magnesium chloride are used as raw materials, and nesquehonite whisker samples with high aspect ratio of 20-30 and narrow distribution range are obtained by controlling reaction conditions; filtrate obtained by filtering nesquehonite is subjected to further high-temperature reaction to obtain nano flaky basic magnesium carbonate with the content of 41-44%; after the reaction, evaporation, concentration and crystallization are performed on filtrate obtained by filtering the basic magnesium carbonate to allow the sodium chloride crystals to be separated, and the sodium chloride crystals are obtained through filtering. The method has the advantages the method is simple in preparation process, easy in process control, mild in condition and easy to achieve industrialization; the nesquehonite whiskers are high in purity, good in overall dispersity, high in aspect ratio and narrow in distribution range; total reaction yield is above 98.0%, and raw material utilization maximization is achieved; the side products sodium chloride can be recycled and refined.

The invention discloses a weather-resistant impact-resistant waterproof plugging material with stable quality. The material comprises the following raw materials by weight: 1-2 parts of a water reducing agent, 15-25 parts of polyvinyl alcohol, 10-20 parts of a tackifying promoter, 30-40 parts of a polyurethane prepolymer, 20-30 parts of a magnesium acrylate emulsion, 10-16 parts of ore filling, 3-5 parts of white carbon black, 2-4 parts of a nanometer additive, 5-9 parts of dispersible adhesive powder, 3-7 parts of a weather-resistant aid, 10-14 parts of reinforced fibers and 10-12 parts of water. The waterproof material provided by the invention has the characteristics of stable performance, resistance to cold and heat impact, aging resistance, no cracking, no deformation and superior waterproof performance and impermeability; the material has excellent impact fatigue resistance in outdoor usage and can effectively resist high-frequency repeated impact by heavy rain and hail; the raw materials of the material are safe, reliable, friendly to environment, easily available and cheap; the preparation method for the material is simple; so the material provided by the invention has high practical value and good application prospects.

The invention relates to a gravity separation-flotation combined beneficiation process for phosphate ores. The gravity separation-flotation combined beneficiation process for phosphate ores comprisesthe following steps: feeding phosphate ore pulp into a three-segment spiral chute gravity separation process to obtain reselected concentrate and reselected tailings; feeding the reselected concentrate into a desilicication reverse flotation process to obtain desilicicated concentrate and desilicicated tailings; feeding the desilicicated concentrate into a magnesium removal reverse flotation process to obtain double reverse concentrate and magnesium removal tailings; feeding the reselected tailings into a thickener to be concentrated to obtain a thick bottom flow; feeding the thick bottom flowinto a direct flotation process to obtain direct flotation concentrate and direct flotation tailings; feeding the direct flotation concentrate into a reverse flotation process to obtain direct and reverse concentrate and reverse flotation tailings; combining the desilicicated tailings, the direct flotation tailings and the reverse flotation tailings to obtain final phosphate tailings; and combining the double reverse concentrate with the direct and reverse concentrate to obtain the final phosphate concentrate. The process has the advantages that the desilicication reverse flotation is free ofslurry interference, the silicate removal efficiency is high, direct flotation is free of coarse grain level interference, the consumption of a reagent is low, the yield of a foamed product floatingin the beneficiation process is low, and a flowage structure is good in stability and high in controllability.

The invention relates to a novel preparation method of a useful decisive compound of Aluminum Magnesium hydroxy Carbonate serving as a therapeutic agent of gastrointestinal diseases as shown in chemical formula 1.