44 results about "High magnesium" patented technology

The invention discloses glycine chelated magnesium with high magnesium content and high bioavailability and a preparation method of the glycine chelated magnesium. The preparation method comprises the following steps: firstly, adding water into a reaction kettle, stirring and heating, then adding glycine for dissolving, then adding magnesite powder, continuously heating for reaction, filtering reaction liquid after the reaction is completed, and then carrying out spray drying to obtain the glycine magnesium. Glycine and pure natural magnesite powder are used as raw materials to react, unreacted filter residues are filtered after the reaction is completed to obtain the reaction liquid, the reaction liquid is subjected to spray drying to obtain anhydrous magnesium glycinate with the magnesium content larger than or equal to 14.0%, the magnesium content is remarkably increased, the source of the magnesite powder is low in price and easy to obtain, and the production cost is effectively reduced. The preparation method disclosed by the invention is green and environment-friendly, high in production efficiency and easy for industrial production, and has remarkable economic benefits and social benefits. By comparing in-vitro simulated digestion tests of various magnesium glycinate, magnesium glycinate with the content of 14% has higher bioavailability.

The invention relates to the technical field of extraction of lithium from brine, and provides a pretreatment method of high-magnesium boron-containing brine and application thereof. Before entering an electrodialysis lithium extraction device, the high-magnesium boron-containing brine is pretreated, and the method comprises the following steps: diluting the high-magnesium boron-containing brine with water to obtain diluted high-magnesium boron-containing brine; adding a seed crystal into the diluted high-magnesium boron-containing brine, stirring, standing and settling, and taking supernate to obtain first pretreated high-magnesium boron-containing brine; and adding acid into the first pretreated high-magnesium boron-containing brine to adjust the pH value to 5.0-6.5. Through the mode, the concentration of boron ions in the brine can be reduced, the influence of precipitation of magnesium borate on an electrodialysis membrane is reduced, and the stability and continuity in the electrodialysis lithium extraction process can be improved.

The invention discloses a preparation method of cube-like nano calcium carbonate. The preparation method comprises the following steps: calcining raw material limestone with high magnesium content into calcium oxide with certain activity, digesting, refining, removing impurities and preparing into calcium hydroxide suspension; a composite additive accounting for 1%-5% of the solid content of calcium hydroxide in the suspension liquid is added when the carbonization reaction is carried out for 5 min, a cellulose-based surfactant accounting for 1%-2% of the theoretical yield of the nano calcium carbonate is added when the conductivity of the system starts to be obviously and continuously reduced, the reaction is carried out for 5 min when the conductivity of the system is reduced to an inflection point, the carbonization reaction is terminated, and the nano calcium carbonate suspension liquid is obtained; and carrying out filter pressing, drying, crushing and grading to obtain the cube-like nano calcium carbonate. By controlling the calcination degree of the limestone, controlling the process conditions of the carbonization reaction and using the synergistic effect of the composite additive, the crystal form and the morphology of the nano calcium carbonate are regulated and controlled, and the problems of product crystal form mixing, irregular morphology doping, irregular particle size, poor uniformity and the like which easily occur in the process of producing the nano calcium carbonate from the high-magnesium limestone are effectively solved.

The invention relates to an impurity removal method for a hydrochloric acid leaching solution containing magnesium minerals, in particular to a method for removing nickel from the hydrochloric acid leaching solution containing the magnesium minerals under high magnesium concentration. According to the method for removing the nickel impurities through the coprecipitation method when the magnesium concentration is high (larger than 50 g / L), the nickel removal effect is good, the nickel slag grade is high, the magnesium loss is small, and the nickel impurities in the magnesium chloride salt solution are low. The high magnesium concentration is that the magnesium concentration is greater than 50g / L, the method is a co-precipitation method, and a neutralizer and an iron inducer are respectively added into the leachate, so that iron ions and nickel ions are subjected to co-precipitation reaction. The method has the following advantages: (1) the iron inducer is added, so that impurities such as nickel can be effectively removed when the concentration of magnesium ions is relatively high; extra water addition for dilution is not needed, and the current production scale is not influenced. And (2) the nickel slag obtained by impurity removal is high in nickel content and high in economic value. And (3) the iron inducer is low in price.

The purpose of the present disclosure is to provide magnesium glycinate which has a high magnesium concentration.　Disclosed is magnesium glycinate which is configured such that, in differential scanning calorimetry analysis, the value S1 / S2 obtained by dividing the area S1 of an endothermic peak that has a starting temperature in the range of 230°C to 255°C by the area S2 of an endothermic peak that has a starting temperature in the range of 330°C to 370°C is 0 to 7 inclusive.

The invention discloses a vanadium inhibitor and a preparation method thereof, a petroleum additive and application, and the vanadium inhibitor comprises the following components in percentage by mass: 45%-70% of a magnesium-containing compound, 5%-22% of a dispersing agent, 15%-45% of a solvent and 0.5%-8% of an anti-settling agent. Wherein the mass percent of the magnesium element in the vanadium inhibitor is 20%-36%, the particle size D100 of the vanadium inhibitor is smaller than 350 nm, and the magnesium-containing compound comprises one or more of magnesium oxide, magnesium hydroxide and magnesium carbonate. The vanadium inhibitor with high magnesium element content and small particle size range is obtained by selecting the specific magnesium-containing compound and optimizing the formula of the vanadium inhibitor, can be efficiently combined with the vanadium element in an oil material to generate magnesium vanadate, has a good vanadium inhibition effect, still keeps excellent flowability in a water-containing environment or high and low-temperature environments, and can be used for preparing magnesium vanadate. Decomposition and curing do not occur, and good stability is achieved.

The present invention belongs to the technical field of glass fibers, and specifically relates to a high-magnesium, high-specific modulus glass fiber composition and glass fibers. The mass percentages of the components are SiO2: 58.5-63.0%, Al2O3: 15.0-20.0%, CaO: 0.3-2.5%, MgO: 16.0-19.5%, Fe2O3: 0.2-0.6%, Y2O3+B2O3: 1.0-3.5%, B2O3: 0.1-1.0%, and K2O+Na2O: 0.3-0.8%. The present invention significantly increases the MgO content, increases the SiO2 content, reduces the Al2O3 and CaO contents, and adjusts the usage ratio of MgO / Al2O3, thereby achieving a density of the glass fiber composition of 2.610 g / cm. 3 The elastic modulus of the glass fiber is ≧94.0GPa, and the specific elastic modulus is ≧3.67*10 6 m.

The present invention discloses a method and device for preparing calcium-removed magnesium-rich recrystallized dolomite, the method comprising: preparing a reaction solution 1, wherein the Ca in the reaction solution 1 is 2+ Mg 2+ 、Na + The ion concentration is equal to the Ca in standard seawater 2+ Mg 2+ 、Na + Ion concentration value; prepare reaction solution 2, CO3 in reaction solution 2 2‑ Ions and Ca in reaction solution 1 2+ The ion concentration is consistent, and the Na + Ions and Na in reaction solution 1 + The ion concentration is consistent; a configured basic reaction solution is added to the reactor; the prepared magnesium-rich carbonate seed is added to the basic reaction solution in the reactor; reaction solution one and reaction solution two are injected into a reaction vessel via a peristaltic pump, and a gas source of different components is supplied during the reaction to adjust the pH value of the solution in the reaction vessel. The pH is lowered and raised in a continuous alternating manner day and night, and a dolomite sample with a high magnesium-calcium ratio is obtained after 30-60 days. The present invention achieves the preparation of dolomite by decalcification and magnesium-rich recrystallization under normal temperature and pressure laboratory conditions.

The utility model relates to the technical field of external refining forming, in particular to an ultrahigh magnesium spheroidizing cored wire external refining forming device, which is characterized in that the inner wall of a ladle refining furnace body is rotatably connected with an internal barrel, the inner wall of the internal barrel is fixedly provided with an inner ring gear, and the upper end of an external connecting plate is fixedly connected with a middle connecting block; the outer wall of the stirring rod is fixedly connected with a stirring paddle and a driving gear, one end of the driving gear is in meshed connection with a driven gear, and when the stirring rod rotates, the driving gear is driven to synchronously rotate, so that the driven gear drives the inner barrel to rotate through the inner ring gear, and the rotating direction of the inner barrel is opposite to that of the stirring rod; at the moment, the stirring range of the stirring paddle is increased along with rotation of the inner barrel, the stirring efficiency is high, and the problem that the stirring efficiency is low due to the fact that a stirring structure of an existing cored wire external refining forming device is fixed to a certain position and the stirring range is limited when a cored wire enters molten steel for stirring is solved.

The invention provides a composition with high magnesium absorption and utilization rate and capable of improving emotion and sleep as well as a preparation method, application and related products of the composition, and belongs to the technical field of magnesium-containing compositions. The composition provided by the invention comprises the following components: magnesium glycinate, magnesium taurine and magnesium malate, and further comprises gamma-aminobutyric acid, vitamin B6, vitamin D and phospholipid. The composition can be made into a variety of dosage forms including tablets. Animal experiments show that the composition provided by the invention can achieve a higher magnesium utilization rate and better effects of improving anxiety and depression and improving sleep.

The invention discloses a magnesium removal method for a high-magnesium-content lithium leaching solution. The high-magnesium-content lithium leaching solution is a lithium sulfate solution obtained by roasting, acidifying, leaching and impurity removal of spodumene ore; the magnesium removal method comprises the following steps: introducing a sodium hydroxide solution into the lithium leaching solution with high magnesium content, synchronously adding calcium hydroxide and magnesium hydroxide seed crystals, and carrying out solid-liquid separation by using a filtering device after complete reaction. By optimizing the reaction raw materials and controlling and adjusting the process, the magnesium removal and filtration efficiency can be obviously improved under the condition that the equipment process flow is not adjusted on a production line, so that the treatment yield is improved, and the production cost is saved.

The invention discloses an Al-Mg-Zn aluminum alloy with ultrahigh strength, high toughness and high magnesium content and a preparation method of the Al-Mg-Zn aluminum alloy. The alloy contains 83.30 wt%-89.51 wt% of Al, 6.0 wt%-9.9 wt% of Mg, 4.01 wt%-5.50 wt% of Zn, 0.025 wt%-0.6 wt% of Si and at least one of Mn, Cu, Zr, Sc, Ti, Be and Sb, wherein the total content of the Mn, the Cu, the Zr, the Sc, the Ti, the Be and the Sb is not larger than 0.7 wt%. The contents of Mg, Zn and Si meet the relational expression: 0.83 < = [(2 * Mg) + Si] / [(3 * Zn)-(0.2 * Mg)] < = 2.03. The preparation method of the aluminum alloy deformation processing material comprises the following steps: (1) manufacturing an aluminum alloy cast ingot; (2) homogenizing heat treatment; (3) processing into a processing material; (4) solid solution heat treatment; (5) cooling to room temperature; and (6) aging treatment. The aluminum alloy has low density, high strength and high fracture toughness.

This application discloses an air-suspension granulation technology for preparing spherical magnesium nitrate hexahydrate, belonging to the field of magnesium nitrate hexahydrate granulation technology. It includes magnesium nitrate hexahydrate purification and granulation. This application incorporates a hydrophobic agent to form a robust microscopic protective layer, which effectively blocks water molecule intrusion and has a low moisture absorption rate. Furthermore, the air-suspension granulation tower technology is redesigned to better handle surface free water, resulting in higher magnesium nitrate purity, better crystal form, and better applicability to various magnesium nitrate applications. The particle size of the magnesium nitrate hexahydrate particles prepared by this application can be adjusted according to the air velocity, ranging from 0.5 to 12 mm. This technology has a wide range of applications, low cost, high sphericity, and eliminates the need for subsequent separate processing of broken particles, reducing labor costs and improving production efficiency. The magnesium nitrate hexahydrate also exhibits high purity, few impurities, and high product quality.

This invention relates to the field of phosphate rock beneficiation technology. It discloses a composite beneficiation method for removing iron, aluminum, silicon, and magnesium impurities from phosphate rock, comprising the following steps: S1, crushing and grinding phosphate rock to remove magnesium; S2, adding water to the demagnesified phosphate concentrate at a concentration controlled at 15-20%, and classifying it using a hydrocyclone to obtain coarse and fine products; S3, subjecting the coarse product to aeration reverse flotation for desiliconization; S4, concentrating the fine product and then subjecting it to aeration flotation for desiliconization, iron removal, and aluminum removal; S5, merging high-quality phosphate concentrate one and high-quality phosphate concentrate two to obtain a low-silicon, low-magnesium, low-iron, and low-aluminum high-quality phosphate concentrate; S6, merging the tailings as total tailings. This invention effectively solves the problem of high magnesium, silicon, iron, and aluminum impurity content in phosphate rock due to depletion, which is difficult to effectively remove. It is an easy-to-operate and easily industrialized composite beneficiation process for efficient phosphate rock impurity removal.

The invention provides a pre-magnesium-removal wet processing method for nickel-cobalt mixed hydroxides, and relates to the field of wet metallurgy. The pre-magnesium-removal wet treatment method of the nickel-cobalt mixed hydroxide comprises the following steps: mixing the nickel-cobalt mixed hydroxide with a first washing solution, and carrying out first slurrying treatment; adding an acid solution into the ore pulp subjected to the first pulpifying treatment, stirring, and carrying out first solid-liquid separation to obtain first washing slag and first filtrate; mixing the first washing slag with a second washing solution, carrying out second pulpifying treatment, adjusting the pH value of the ore pulp subjected to the second pulpifying treatment to 6.8-7.2, introducing CO2 gas, and carrying out carbonization reaction to obtain carbonized ore pulp; and carrying out second solid-liquid separation on the carbonized ore pulp to obtain a pre-magnesium-removed solid and a second filtrate. According to the method, the high magnesium removal efficiency can be achieved under the mild condition, loss of metal such as nickel and cobalt is reduced to the maximum extent, and the method has the advantages of being low in acid consumption, low in water consumption and short in process, and has the feasibility of continuous amplification.

A planting method for tea with high magnesium content relates to the technical field of tea planting and specifically comprises the following steps: S1, before planting, applying a magnesium fertilizer to improve soil; s2, tea trees are planted in the soil improved in the S1, and base fertilizer is applied to improve the soil structure; s3, in the growing period of the tea trees planted in the S2, magnesium fertilizer topdressing is conducted in multiple times in combination with drip irrigation; s4, after the tea trees in the S3 grow up, spraying a magnesium glycinate solution to leaves of the tea leaves in the young shoot growing period of the tea trees; s5, picking the tea leaves entering the picking period in the tea trees in the step S4; the method disclosed by the invention is simple and easy to implement, the operation of each step is easy to master, and the method is suitable for large-scale popularization, can meet the requirements of the market on the high-magnesium functional tea and has good economic benefits and social benefits.

This invention relates to a method for treating and utilizing high magnesium-to-sulfur ratio chlorine-containing wastewater, belonging to the field of environmental protection. This invention utilizes inexpensive calcium alkali to treat high magnesium-to-sulfur ratio chlorine-containing wastewater. During the treatment process, dilute hydrochloric acid is used as a circulation starter. Taking advantage of the difficult-to-remove chloride ions in the wastewater, the calcium alkali is used to generate calcium chloride solution, thereby continuously recovering sulfate ions from the high magnesium-to-sulfur ratio wastewater. Magnesium is converted into magnesium hydroxide, transforming into valuable by-products such as calcium chloride and gypsum, thus achieving resource utilization of waste. This method reduces the environmental impact of wastewater discharge, while also reducing treatment costs and achieving resource recycling. It is highly feasible for existing enterprises and has significant economic, social, and environmental benefits.

The invention belongs to the technical field of wet smelting, and provides a method for continuously preparing high-activity magnesium oxide slurry from superfine magnesium oxide powder and applying the high-activity magnesium oxide slurry to cobalt precipitation and nickel precipitation, and the method comprises the following steps: S1, selecting light calcined magnesium oxide meeting the quality requirement to prepare the superfine magnesium oxide powder meeting the quality requirement; s2, superfine magnesium oxide powder is conveyed to a high-position stock bin, quantitative and continuous feeding is conducted through a metering feeding device, and the superfine magnesium oxide powder is continuously mixed with water or cobalt precipitation pre-liquid or nickel precipitation pre-liquid by means of a Venturi ejector; s3, performing high-shear emulsification dispersion to obtain high-activity magnesium oxide slurry; and S4, directly conveying to a cobalt and nickel deposition reaction system to realize seamless joint between magnesium oxide continuous pulping and continuous cobalt and nickel deposition processes. The invention solves the technical problems of easy agglomeration and caking of magnesium oxide slurry, poor activity, poor cobalt and nickel deposition performance, low grade of crude cobalt hydroxide or nickel cobalt hydroxide product, high content of impurity magnesium, high unit consumption of magnesium oxide and the like in the traditional process.

The invention provides extraction sewage treatment equipment and process for extracting lithium from brine with a high magnesium-lithium ratio, and relates to the technical field of water pollution treatment, the extraction sewage treatment equipment comprises a reaction tank, a dosing mechanism, a slag scraping mechanism and a slag removing mechanism; the slag scraping mechanism comprises a scraping plate and two threaded lead screws, the scraping plate is arranged in the reaction tank, the two threaded lead screws are in threaded connection with the scraping plate, and the left ends of the two threaded lead screws are rotationally connected with first connecting seats. According to the scheme, the slag removal frame and the filter screen are in an inclined state through continuous rightward movement of a scraper blade under the cooperation of an overturning gear and an overturning toothed plate, so that the separated floccule scum can be further treated conveniently, and lime milk can be in better full contact with lower-layer sewage after the floating scum is cleaned, so that the reaction rate is increased, and the reaction time is shortened. And scum can be prevented from being taken out by water flow, so that secondary entrainment of heavy metals and organic matters is reduced, the subsequent recycling or discharging standard is met, and the risk of secondary pollution is avoided.

This invention discloses a ternary composite extraction system for iron-containing brine with a high magnesium-to-lithium ratio and its application. The ternary composite extraction system includes: a main extractant, a co-extractant, a phase behavior modifier, and a diluent; wherein the main extractant includes diphenyl octyl phosphate, the co-extractant includes di(2-ethylhexyl)phosphoric acid, and the phase behavior modifier includes diethyl succinate. This invention proposes a ternary composite extraction system containing DPOP, P2O4, and DES, and establishes a differentiated extraction-back-extraction pathway for complex iron-containing systems. It enables effective lithium recovery through water back-extraction and controls the distribution behavior of iron in the system, thereby simplifying the process and improving the stability of the organic phase cycle.

The invention discloses a high-strength Portland cement clinker with high magnesium oxide content and a preparation method of the high-strength Portland cement clinker. The clinker is prepared from the following mineral components in percentage by weight: 55 to 65 percent of C3S, 15 to 20 percent of C2S, 5 to 10 percent of C3A, 8 to 10 percent of C4AF, 2 to 5 percent of # imgabs0 #, 0.1 to 1 percent of CaMoO4 and 0.5 to 1.5 percent of f-CaO. By introducing barite tailings and molybdenum mud and compounding sodium carbonate or sodium bicarbonate, the sintering temperature of the clinker can be reduced by 50-100 DEG C, and a barium-containing and molybdenum-containing compound is formed under the condition that the content of MgO in the clinker is 4-6%, so that the compressive strength of the high-magnesium Portland cement clinker at each age is remarkably improved, and the compressive strength of the high-magnesium Portland cement clinker in 28 days is at least improved by 3 MPa or above.

The invention relates to an oxygen pressure leaching treatment method and an oxygen pressure leaching treatment system for high-magnesium zinc concentrate. The oxygen pressure leaching treatment system comprises a first pipeline, N high-pressure autoclaves, a second pipeline, a third pipeline, a fourth pipeline, a plurality of ninth valves, a tenth valve, a twelfth valve, a flash drum and a solid-liquid separation unit, and the flash drum is communicated with the solid-liquid separation unit; the autoclave comprises a tank body, the tank body is provided with feed ports, discharge ports, air inlets and a manhole, a stirring mechanism is arranged in the tank body, all the feed ports are connected to a first pipeline in parallel, all the discharge ports are connected to a third pipeline in parallel, and all the air inlets are connected to a second pipeline in parallel. According to the oxygen pressure treatment system, deposited and scaled magnesium slag can be regularly cleaned for a single autoclave through the manhole, all the autoclaves can be standby for each other, and during cleaning, by controlling opening and closing of related valves, other autoclaves can be connected in series so as to meet the oxygen pressure leaching process, continuous operation of other autoclaves is guaranteed, and the service life of the autoclaves is prolonged. The operation continuity and the treatment efficiency of the whole oxygen pressure treatment system are favorably improved.

This disclosure aims to provide magnesium glycinate with a high magnesium concentration. [Solution] Magnesium glycinate having a first peak with its peak in the range where 2θ is between 11.1° and 12.1°, and a second peak with its peak in the range where 2θ is between 13.3° and 14.3°, in its powder X-ray diffraction spectrum.

The application provides an extraction sewage treatment equipment and process for extracting lithium from high-magnesium-lithium-ratio brine, relates to the technical field of water pollution treatment, and comprises a reaction tank, a dosing mechanism, a slag scraping mechanism and a slag removal mechanism. The slag scraping mechanism comprises a scraper and two threaded lead screws. The scraper is arranged in the interior of the reaction tank. The two threaded lead screws are threadedly connected with the scraper. First connecting seats are rotationally connected to the left ends of the two threaded lead screws. The scraper continuously moves to the right. The slag removal frame and the filter screen are in an inclined state under the cooperation of the turnover gear and the turnover toothed plate, so that the separated flocculent scum can be further treated. After the floating scum is cleaned, the lime milk and the lower layer of sewage can be better contacted, so that the reaction rate is improved. The scum can be prevented from being carried out by the water flow, so that the secondary entrainment of heavy metals and organic matters is reduced, subsequent reuse or discharge standards are met, and the risk of secondary pollution is avoided.

The invention provides an Al-Mg intermediate alloy with high magnesium content and a preparation method of the Al-Mg intermediate alloy. In the Al-Mg intermediate alloy with high magnesium content, based on 100 wt.% of the Al-Mg intermediate alloy, the content of Mg is 45 wt.%-52 wt.%, the total content of RE and Ca is 0.1 wt.%-1.5 wt.%, the content of Fe is smaller than or equal to 0.15 wt.%, the content of Be is smaller than or equal to 0.002 wt.%, the content of Ca is smaller than or equal to 0.2 wt.%, the single content of other impurity elements is smaller than or equal to 0.1 wt.%, and the total content of the other impurity elements is smaller than or equal to 0.5 wt.%. The Al-Mg intermediate alloy with the high magnesium content is suitable for preparing Mg-containing aluminum alloy and has the advantages of being efficient, low in loss, stable in effect and environmentally friendly.

The invention belongs to the technical field of new energy materials, and discloses a preparation method of a lithium magnesium alloy negative electrode material with high magnesium content. 35%-45% of lithium; 2%-4% of aluminum; 1%-2% of zinc; 0.3%-0.8% of calcium; 0.1%-0.5% of lanthanum; 0.05%-0.3% of neodymium; comprising the following steps: screening raw materials, and removing obviously oxidized and damaged parts on the surface; magnesium, lithium, aluminum, zinc, calcium, lanthanum and neodymium are respectively put into an ultrasonic cleaning machine; according to the method, the raw material ratio is optimized, aluminum, zinc, calcium and rare earth elements lanthanum and neodymium are added, a segmented feeding process is combined, vacuum melting and binary gas stirring are combined, and the problem of composition segregation of a traditional melting method is effectively solved; wherein the rare earth elements lanthanum and neodymium can significantly refine grains, improve the distribution uniformity of the magnesium element and reduce the impurity content, so that the electrochemical stability of the alloy is significantly enhanced, and the cycle performance is superior to that of similar alloys in the prior art.

The invention discloses a method for extracting lithium from brine with a high magnesium-lithium ratio by using a lithium ion sieve expanded bed, the method for extracting lithium from the brine with the high magnesium-lithium ratio by using the lithium ion sieve expanded bed comprises adsorption lithium extraction and acid desorption operation, and the adsorption lithium extraction and acid desorption operation comprises the following steps: (S1) adjusting the expanded bed into an expansion mode, introducing expansion liquid into a first interface, the bed layer is expanded; (S2) introducing alkaline brine suspended with magnesium hydroxide crystal grains from the first interface to pass through the expanded bed layer so as to obtain lithium-poor brine, and discharging the lithium-poor brine from the second interface; (S3) introducing water into the treatment space from the first interface, flushing the treatment space to take away the alkaline brine suspended with magnesium hydroxide crystal grains and retained in the treatment space to obtain wastewater liquid, and discharging the wastewater liquid from the second interface; and (S4) adjusting the expanded bed from an expansion mode to a fixed mode, introducing a dilute acid solution into the treatment space from the second interface to desorb lithium ions adsorbed by the bed layer, obtaining a lithium-rich product solution, discharging the lithium-rich product solution from the first interface, and regenerating the bed layer at the same time.

The invention discloses a copper-nickel sulfide ore flotation composite foaming agent as well as a preparation method and application thereof, belongs to the technical field of mineral separation, and solves one of the problems of weak bubble stability, poor flotation selectivity, low copper-nickel recovery rate and high magnesium content of concentrate in a copper-nickel sulfide ore flotation separation process in the prior art. Raw materials of the copper-nickel sulfide ore flotation composite foaming agent comprise short-chain higher alcohol, ethoxylated low-carbon alcohol ether and sodium oleate. When the copper-nickel sulfide ore flotation composite foaming agent is used for copper-nickel sulfide ore flotation, the grade and the recovery rate of copper-nickel concentrate can be remarkably improved, and the content of MgO in the concentrate is reduced.

The invention relates to a method for determining the content of components in a high-magnesium zinc alloy. The method comprises the following steps: preparing a high-magnesium-zinc alloy standard product, setting direct-reading spectrometer excitation parameters of all elements, drawing a working curve of all the elements, exciting a high-magnesium-zinc alloy sample by using the direct-reading spectrometer, measuring the spectral intensity value of all the elements, and obtaining the content of all the elements according to the working curve. According to the scheme provided by the invention, the contents of seven elements such as Al element, Mg element, Fe element, Pb element, Cd element, Sn element and Cu element in the high-magnesium zinc alloy with the magnesium element content greater than 0.5% can be accurately measured.