85 results about "Lazulite" patented technology

The invention provides a preparation method of platy strontium carbonate particles. The steps include using reduced coal dust to roast reduced celestite ore at high temperature and prepare chamotte containing strontium sulfide; leaching the chamotte by hydrothermal to obtain strontium sulfide solution and simultaneously removing calcium, barium and other foreign ions from the strontium-containing solution; then carrying out oxidation treatment on the strontium-containing solution under the action of a catalyst and recovering sulphur side product and obtaining clean strontium solution; and finally preparing the strontium carbonate product with special platy structure by strictly controlling the carbonizing treatment condition of the strontium solution. The platy strontium carbonate product has uniform particles, high purity, and excellent flow property, dispersion property and fusion property with other materials. The preparation method avoids generating sulfureted hydrogen gas in carbonization process, thoroughly gets rid of sulfureted hydrogen pollution in the production process and can simultaneously separate solid sulphur to be beneficial to the strict control over the index of total sulphur in the product.

The invention relates to a beneficiation concentration process for celestite. The invention is characterized in that celestite ore is sent into a scrubbing desliming equipment to perform the desliming after being crushed to be smaller than 6 mm, the scrubbing desliming concentration is 40 to 50 percent, the obtained ore slime is sent into an ore slime pond to be stored, the obtained product after the desliming is delivered into a grinding system to be ground, the grinding concentration is 60 to 70 percent, to lead composite mineral to achieve the dissociation of a fundamental monomer, products in a roughing cell are flotation tailings to be discharged and stacked, the reflotation is performed to roughing froth products for three times, a reflotation froth product is also flotation concentrate for the last time, and the flotation concentrate is the finished product of the flotation concentrate after being concentrated, filtered, and dried; the products in a reflotation cell for each time of middlings are merged and singly treated. The flow is simple, the invention is easy to be realized, the operation and the controlling are easy, the product quality is high, the recovery ratio of the celestite is high, and the invention can be widely applied to the medium and low grade celestite concentration production.

Disclosed is a process for preparing high purity strontium carbonate, which comprises mixing celestite, anthracite coal, calcium chloride as catalyst, high-temperature roasting for deacidizing strontium sulfide, filtering strontium monosulfide through heat leaching, charging sodium-hydroxide and strontium monosulfide to result in alkali analysis reaction, producing strontium hydroxide crystalline body, the purifying strontium hydroxide through recrystallization process, finally reacting pure strontium hydroxide solution with let-in carbon dioxide at the presence of ultrasonic wave action, thus producing high purity strontium carbonate powder, and reacting lime cream with strontium monosulfide to obtain sodium-hydroxide and strontium monosulfide precipitate, wherein sodium-hydroxide can be circulated in the alkali analysis reaction.

The invention mainly aims to provide a method for producing less-barium fine strontium salts from celestite, and the method is low in cost, which comprises the steps: refining: crushing or grinding the celestite to particles of less than 200 mesh; acid washing: reacting diluted hydrochloric acid with the levigated celestite, and removing a carbonate component in the celestite to obtain high-purity refined celestite; and double decomposition: adding the refined celestite to an ammonium carbonate aqueous solution, uniformly stirring, then reacting in an airtight condition at a reaction pressure of 0.2-0.3MPa and a reaction material temperature of 100-115 DEG C, stopping heating after the reaction is finished, filtering and washing obtained solid to obtain a strontium carbonate crude product, and further refining the strontium carbonate crude product to obtain a product. The method has the advantages that during the double decomposition reaction, when reacting with the celestite, ammonium carbonate only reacts with strontium sulfate in the celestite without reacting with barium sulfate, so that the barium content of the obtained strontium carbonate crude product is very low and lower than 0.05%; and the method is low in production cost and has wide market prospect.

The invention discloses a method for manufacturing strontium carbonate, comprising the following steps: a. celestite and coal dust are roasted under the condition of a temperature between 850 and 1,000 DEG C; b. rough strontium carbonate is added with water and leached for 2 to 3 times, with 0.5 to 1 hour for each time, and then clarified; c. CO2 in industrial waste gas enters into a thionizer for desulfurization treatment; d. a clear leaching solution in the step b enters into a carbonizer, and the CO2 after the treatment in the step c enters into the carbonizer simultaneously for carbonization reaction; e. strontium carbonate serum obtained in the step d is added with alkali for desulfurization and dehydration, and strontium cakes are obtained; and f. deferrization of the strontium cakes is performed through a magnetic roller. The method not only saves the equipment required for manufacturing the CO2 but also greatly saves the human and material resources. More important, the method changes the waste into the valuable, thereby not only reducing the production cost but also simultaneously avoiding exhaust emission of other chemical enterprises and integrally improving the living environment of people.

The preparation method of strontium carbonate includes the following steps: pulverizing celestine in which the strontium carbonate content is 30-95%, making it react with soluble carbonate to obtain crude strontium carbonate, adding barium-removing agent to inhibit the conversion of barium sulfate into barium carbonate, then making the crude strontium carbonate react with acidifying reagent to obtain soluble strontium salt solution, removing impurity and making the strontium salt solution react with carbonization reagent to obtain the invented strontium carbonate.

The invention relates to a technique to comprehensively utilizing an intergrown ore of bastnaesite and celestite. The detailed steps of the technique comprises: firstly the raw material of intergrown ore of bastnaesite and celstite are crashed until the -200 orders taking up 60-90%; secondly proper collecting agent and alkalis inhibitor are added, and compound concentrate is obtained; thirdly under the temperature of 500-600 DEG C, the concentrate is roasted for 1.5 to 2.5 hours so as to obtain calcine; finally, the calcine is leached with concentrated hydrochloric acid in normal temperature for 0.5 to 3.0 hours, the leaching slag is celestite and the leaching solution is blended rare earth chloride solution. The invention can greatly increase the recycle rate of the rare earth and celestite and the grade of celestite concentrate, meet the further processing requirements of celestite; besides, the separation of the blended concentrate integrates closely with the existing rare earth production, no extra investment of equipments is needed, the existing roasting and leaching devices is expanded; furthermore, the invention simplifies gravity separation and flotation operation, which is good for the stability of the production.

The invention offers a new kind of method producing strontium carbonate using lazurite mineral as raw material. Mix lazurite breeze with reduced iron powders in certain proportion to get black ash, dip black ash in water of opposite flow and get strontium carbonate solution; regard calcined soda as carburizer, make them reactivate at temperature of 90-100deg.C under mixing to form slurry including deposition of strontium carbonate and sodium sulfide solution of low iron, and get deposition of strontium carbonate and sodium sulfide solution of low iron through separating solid and liquid, absterge strontium carbonate with water of opposite flow for 3-5 times, dry it and get product of strontium carbonate of high quality; Mother liquor absterging strontium carbonate for the first time mixes with centrifugal mother liquor of slurry of strontium carbonate and the mixed solution is vaporized by cold boiler which regards heat transfer oil as medium, get byproduct of sodium sulfide of low iron. The producing craft of the invention is simple, the procedure is short with low cost, the investment of equipment is small, quality of main product and byproduct is high, it has a good economical effect.

The invention discloses an X-ray fluorescence spectrometry method for simultaneously analyzing fluorspar, barite and celestite in ores quantitatively. The X-ray fluorescence spectrometry method comprises the following specific processes: preparing an artificial standard substance by mixing a barite standard substance, a fluorite standard substance, rare earth ore standard substance, strontium sulfate and strontium carbonate, fusing the artificial standard substance by using a mixed fusing agent (the ratio of lithium tetraborate to lithium metaborate is 12:22), scanning obtained standard samples to determine an instrument condition, correcting a matrix effect, and then establishing a standard curve; treating a sample to be tested by using a strontium-containing acetic acid solution, filtering, separating an interferent, ashing a precipitate and filter paper, then adding the mixed fusing agent (the ratio of lithium tetraborate to lithium metaborate is 12:22) for fusing, and analyzing according to the standard curve. An X-ray fluorescence spectrometer is selected as an analytical instrument, pretreatment operation is simplified, and simultaneous quantitative analysis of three components, namely the fluorite, the barite and the celestite, in the ore is achieved; the X-ray fluorescence spectrometry method is suitable for analyzing the single ore or the ore containing the fluorite, the barite and the celestite.

The invention discloses a preparation method of an adsorbent for wastewater treatment, and belongs to the technical field of wastewater treatment. According to the preparation method, fly ash is subjected to acid leaching treatment, the adsorption capability of the fly ash to dye can be significantly enhanced, chitosan is adopted to be composited with the fly ash, the fly ash is adsorbed on the surface of the chitosan in the compositing process, the electrical property of the surface of the fly ash is changed, dye wastewater is generally negatively charged, in this way, the fly ash has the surface adsorption capability, the treatment effect of wastewater is enhanced, strontium carbonate extracted from celestite is doped in the fly ash, the strontium carbonate can make titanium dioxide lattices distorted, thus an energy gap of a titanium dioxide forbidden band is narrowed, titanium dioxide can absorb light with the wider-scope wavelength, a culture matrix containing bacillus natto liquid is prepared from soybean powder and is rich in gamma-polyglutamic acid, the space reserved after the gamma-polyglutamic acid is biodegraded provides the space for subsequent microorganism growth, the number of the active microorganisms on the adsorbent is increased, and thus the biofilm culturing amount of the adsorbent microorganisms is increased.

The invention discloses a method for synthesizing strontium carbonate from celestite by high-temperature static reduction-pressurization conversion. The method comprises the following steps: 1) preparing celestite concentrate and carbon into carbonous pellets, and carrying out reduction roasting in a rotary hearth furnace; 2) when the roasted product is cooled to 200-500 DEG C in a reducing atmosphere, crushing; 3) immediately introducing the crushing product into a high-pressure autoclave containing a conversion solution, immediately sealing to prepare the solution, and starting the conversion reaction when the temperature of the high-pressure autoclave reaches 50-150 DEG C; 4) carrying out solid-liquid separation on the converted ore slurry, sufficiently washing the filtration residue to obtain crude strontium carbonate, and sending the filtrate into an ammonia recovery system to perform ammonia steaming recovery so as to regenerate ammonium carbonate; and 5) carrying out impurity purification on the crude strontium carbonate to obtain high-purity strontium carbonate, sufficiently washing, drying, bagging, sealing and storing. The method solves the problem of hydrogen sulfide pollution, and enhances the reaction rate.

The invention relates to a preparation method of a solid catalyst for ozone heterogeneous oxidation, which belongs to the technical fields of environmental protection and chemical catalysts. The preparation method is to use attapulgite, diopside, talc, crystal soda, aluminum hydroxide and lapis lazuli porous materials as carriers, and after the carrier is modified by lithium hypochlorite and bis(acetylacetonate) beryllium to expand pores, add The surface active agent trioctylmethyl ammonium chloride is subjected to surface activation treatment under the action of ultrasonic waves, and then the ultrasonic surface activation carrier is mixed with the composite mineralizer borax and potassium sulfate in a hydrothermal reaction kettle, and the catalytic activity auxiliary agent precursor three (3 ‑Trifluoroacetyl‑D‑camphor) praseodymium (III), promethium tricyclopentadienyl, terbium triacetate hydrate, holmium oxalate decahydrate rare earth organometallic compound, catalytic active center component precursor common transition metal organic compound fuma Iron ferrous acid, nickel citrate and noble metal compound silver dithiocyanate (I) potassium, terpyridyl ruthenium chloride hexahydrate, hydrothermal under the action of emulsifier trimethylaminoethanol stearate ammonium iodide After the reaction, the reaction product is dried to remove moisture, and burned at a certain temperature in a muffle furnace to obtain a solid catalyst for ozone heterogeneous oxidation.

The invention discloses a method for preparing nano strontium carbonate and belongs to the technical field of strontium carbonate preparation. Celestite serves as the raw material and is smashed and then dissolved with an excessive amount of diluted sulphuric acid to move calcium carbonate therein, then strontium sulfate in the celestite is dissolved with diluted hydrochloric acid, filtering is conducted to remove insoluble substances like barium sulfate, then the obtained strontium chloride solution is mixed with automatically cultured microorganism colonies on the surface of the celestite, and organic matter, with negative charges, on the surface of microorganism cell surfaces is chelated with strontium ions in the solution; urea serves as the carbon source of microorganisms, the urea is continuously decomposed so that the concentration of carbanions in the solution around the microorganisms can be increased continuously, accordingly the concentration of part of carbanions and strontium ions in the solution is increased, the carbanions and the strontium ions are combined into strontium carbonate crystal precipitate, and then the precipitate is filtered and dried to obtain the nano strontium carbonate. The method has the advantages that preparation steps are simple, the impurity content of the obtained product is reduced by 70-80%, and activity is improved by 25-30%.

The invention relates to a method for preparing strontium hydroxide octahydrate granular crystals, which includes steps: forging celestine and coal before leaching, obtaining crude strontium hydroxide octahydrate by chemical combination of the solution and sodium hydroxide, and recrystalizing the crude strontium hydroxide octahydrate at a certain temperature to obtain high-purity strontium hydroxide octahydrate granular crystals. Particles with diameter larger than 1000 micrometers account for more than 55% of the strontium hydroxide octahydrate granular crystals prepared by recrystalizing at temperature ranging from 72 DEG C to74 DEG C, the prepared strontium hydroxide octahydrate granular crystals are high in purity and low in impurity content. The conversion rate of Sr2+ in the celestine into strontium hydroxide is 100%, and economic benefit of the process is improved since the Sr2+ is converted into the strontium hydroxide to the greatest extent and the selling price of the strontium hydroxide is higher than that of the strontium carbonate.

The invention discloses a method for recovering celestite from waste residue in strontium carbonate production by celestite back salt method, comprising the following steps: 1) crashing: crashing the waste residue to prepare waste residue powder; 2) sizing: mixing the waste residue powder with water to form residue slurry with a proper concentration; 3) reelecting: selecting unreacted celestite in the residue slurry by a shaker; and 4) dehydrating: dehydrating separated heavy and light components, wherein the heavy component is the celestite. In the invention, the unreacted celestite during the process of producing the strontium carbonate is recovered with a reelection method, thereby improving the resource utilization of strontium ore; and the method is simple, and the cost is low.

The invention discloses ceramic glaze applicable to a robot glaze spraying process and a preparation method of the ceramic glaze applicable to the robot glaze spraying process. The glaze is prepared from 40-50 parts of kaolin, 30-40 parts of clay, 5-7 parts of cerusite, 2-4 parts of borax, 0.5-0.7 part of yttrium oxide, 4-6 parts of zirconium silicate, 3-6 parts of perovskite, 15-20 parts of quartz stone, 14-17 parts of field soil, 0.5-1 part of galena, 7-9 parts of pyrite and 1-2 parts of celestite. The preparation method includes: dissolving yttrium oxide, zirconium silicate, perovskite, galena and pyrite into acid, adding water to dilute, and keeping for standby application; adding surfactants, and stirring to keep for standby application; adding residual materials into a ball mill, adding solution, and performing ball milling to obtain 150-250-mesh ceramic glaze applicable to the robot glaze spraying process. The glaze is applicable to robot spraying and high in stability. The preparation method is suitable for large-scale industrial application.

The invention relates to a preparation method of a solid catalyst for ozone heterogeneous oxidation, which belongs to the technical fields of environmental protection and chemical catalysts. The preparation method is to use diatomite, kyanite, brucite, serpentine, aluminum hydroxide and lapis lazuli porous materials as carriers, and the carrier is modified by lithium hypochlorite and bis(acetylacetonate) beryllium. , adding the surfactant lauryl dimethyl hydroxyethyl ammonium chloride to carry out surface activation treatment under the action of ultrasonic waves, and then the ultrasonic surface activation carrier is mixed with the composite mineralizer borax and potassium sulfate in the hydrothermal reaction kettle, the catalytic activity Auxiliary precursor tris (hexafluoroacetylacetonate) yttrium (III) dihydrate, tricyclopentadiene promethium, holmium oxalate decahydrate, tris (trifluoromethanesulfonimide) ytterbium rare earth metal organic compound, catalytic active center Component precursors Common transition metal organic compound pyruvate isonicotinoyl hydrazone vanadium, cobalt gluconate and noble metal compound dichloro tetraammine palladium, tetrachloro iridium dihydrate, in emulsifier dioctadecyl dimethyl ammonium bromide The hydrothermal reaction is carried out under the action, and the reaction product is dried to remove moisture, and then burned at a certain temperature in a muffle furnace to obtain a solid catalyst for ozone heterogeneous oxidation.

The invention relates to a method for preparing high-purity strontium carbonate, and belongs to the technical field of preparation of strontium carbonate. The method comprises the steps: firstly, soaking calcined celestite in hydrochloric acid, supplementing with hydrogen peroxide, extracting strontium ions, followed by extracting probiotics in celestite surface soil, screening, culturing, mixing with a strontium ion-containing mixed solution, supplementing with sodium carbonate, under action of probiotics self enzymes, continuously carrying out enzymatic action with surrounding media to generate carbonate ions, and carrying out a reaction with strontium ions to produce strontium carbonate crystals. The prepared strontium carbonate contains low impurity level, has high purity up to more than or equal to 99.5%, has high activity, and cannot produce secondary pollution in the process of preparation.

The invention relates to a preparation method of a solid catalyst for ozone heterogeneous oxidation, which belongs to the technical fields of environmental protection and chemical catalysts. The preparation method is to use attapulgite, diopside, illite, sodium borate, aluminum hydroxide and lapis lazuli porous materials as carriers, and the carrier is modified by lithium hypochlorite and bis(acetylacetonate) beryllium to expand pores. , adding the surfactant trioctylmethyl ammonium chloride to carry out surface activation treatment under the action of ultrasonic waves, and then the ultrasonic surface activation carrier is mixed with the composite mineralizer borax and potassium sulfate in the hydrothermal reaction kettle, and the catalytic activity auxiliary agent precursor three (3‑trifluoroacetyl‑D‑camphor)praseodymium(III), tricyclopentadienylpromethium, tris(4,4,4‑trifluoro‑1‑(2‑thiophene)‑1,3‑butanedione ) europium, lutetium carbonate hydrate rare earth metal organic compound, catalytic active center component precursor common transition metal organic compound ferrous fumarate, nickel citrate, catechol ethylenediamine tungsten complex and noble metal compound dithiocyanate Potassium argentate (I) undergoes a hydrothermal reaction under the action of the emulsifier dodecyldimethyl (2-hydroxyl) ethyl ammonium chloride. After the reaction product is dried to remove moisture, it is placed in a muffle furnace. Calcination at a certain temperature to obtain a solid catalyst for ozone heterogeneous oxidation.