55 results about "Strontium sulfide" 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 discloses a method for preparing a red strontium sulphide long afterglow material, comprising a hydrothermal coprecipitation method which comprises the following steps that: (a) water-solubility strontium salt, water-solubility europium salt, water-solubility dysprosium salt, carbamide and water are weight according to the mol ratio of 1: between 0.01 and 0.05: between 0.01 and 0.05: between 4 and 6: between 28 and 32 and are put inside a container to be stirred and dissolved, the mixture is insulated in a sealing state at a temperature of between 80 and 160 DEG C for 5 to 24 hours so that a precursor is obtained; (b) the precursor is subject to filtering and annealing at a temperature of between 900 and 1200 DEG C in the reaction environment for 0. 5 to 2 hours so that the red strontium sulphide long afterglow material is prepared; the water-solubility strontium salt is strontium nitrate or strontium chloride or strontium acetate, the water-solubility europium salt is europium nitrate, europium chloride or polyimide, the water-solubility dysprosium salt is dysprosium nitrate or dysprosium chloride or dysprosium acetate, and a surface active agent is added according to the mol ratio of the water-solubility strontium salt to the surface active agent of 1: between 0.0001 and 0.0003. The method is widely applied to the fields such as building decoration, traffic transportation, military facilities, fire emergency service and goods for everyday consumption.

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 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 provides a strontium/graphene composite material, which comprises a strontium compound and graphene, the strontium compound being selected from strontium hydroxide or strontium sulfide. The strontium/graphene composite material prepared through a hydrothermal method serves as an electrode material of a supercapacitor, and such material not only has good electrochemical performance, but also has higher specific capacitance and longer cycle life. The experiment result shows that the specific capacitance of the supercapacitor electrode material made from the strontium/graphene composite material prepared through the hydrothermal method can reach 10-1500F/g, and after constant-current charging and discharging for 3000 times, the specific capacitance thereof can still remain more than 98.5%.

The invention offers a new method of strontium chloride preparation, the method uses breeze to deoxidize celestite which is dipped into hot water and get solution of strontium sulfide, put sulfureted hydrogen gas into solution of strontium sulfide to make solution of strontium hydrosulphide which reacts with magnesium chloride to get products of strontium chloride and magnesium hydrate, sulfureted hydrogen gas formed in the reaction is used to make strontium hydrosulphide, thus, it circulates like these steps above. The flow of the invention id short, it no need to consume chemical raw material, the raw material used in this invention is simple to get and is cheap, the quality of the product is high; it can get byproduct of magnesium hydrate at the same time and avoid pollution of sulfureted hydrogen, therefore, it has good economical and social benefits, and it is especially suitable for area where the sources of magnesium chloride is abundant.

The application of the present invention discloses a process for continuously carbonizing strontium carbonate and barium carbonate without hydrogen sulfide gas tank, which includes the following process steps: the first step is to pass the strontium sulfide or barium sulfide liquid through the liquid feed pipe first from the first carbonization tower The upper part is sprayed down; the second step is to adjust the flow rate to maintain a stable liquid level in the first carbonization tower; the third step is to adjust the flow rate to maintain a stable liquid level in the second carbonization tower, and so on; The fourth step is to completely react carbon dioxide with strontium sulfide or barium sulfide solution, and the hydrogen sulfide gas produced is discharged from the exhaust pipe at the top of the first carbonization tower into the subsequent production process; the fifth step is to discharge strontium sulfide or barium strontium sulfide slurry , and then adjust the flow rate to maintain a stable liquid level in the last carbonization tower; the sixth step is to start the car and start continuous production according to the above process. By adopting the process of the invention, the hydrogen sulfide gas tank can be eliminated, and at the same time, the production stability of the follow-up process using hydrogen sulfide as a raw material can be guaranteed.

The invention relates to a production process for reducing celestine concentrate pellets with carbon in a rotary hearth furnace to produce strontium sulfide. The process comprises the following steps: subjecting celestine concentrate powder and anthracite duff or petroleum coke powder, used as main raw materials, to batching according to a certain ratio, weighing and mixing, adding a binder and water and carrying out blending so as to obtain a wet material; pressing the wet material with a ball press machine to obtain cold-bonded pellets with certain sizes; drying the pellets in a chain grate, then conveying the dried pellets to the rotary hearth furnace with a highest reduction temperature of 1200 to 1300 DEG C to convert strontium sulfate in celestine into strontium sulfide; and discharging the reduced hot pellets out from the rotary hearth furnace and directly quenching the hot pellets in a water leaching pool, wherein the waste heat of the pellets can be used for increasing water temperature so as to facilitate acceleration of a series of chemical reactions for subsequent preparation of strontium carbonate. The process for production of strontium sulfide via the rotary hearth furnace has the advantages of simple operation, high efficiency, great output, low cost, no pollution, etc. Detection results show that the conversion rate of strontium sulfate in celestine reaches 95% or above through reduction of celestine with carbon in the rotary hearth furnace.

The invention discloses an iron-based powder metallurgy self-lubricating CNG engine valve retainer with a good heat-conducting property. The iron-based powder metallurgy self-lubricating CNG engine valve retainer is prepared from, by weight, 6.4-6.8 parts of chrome, 4.4-4.8 parts of cobalt, 1.1-1.5 parts of nickel, 3.4-3.8 parts of scandium, 2.1-2.4 parts of niobium, 4.3-4.7 parts of aluminum, 13-15 parts of copper, 1.2-1.5 parts of nanometer molybdenum disulfide, 0.2-0.3 part of sodium borate, 0.7-0.9 part of strontium sulfide, 1-3 parts of stainless steel powder, 0.1-0.3 part of potassium permanganate, 2-3 parts of bisphenol-A epoxy resin, 0.6-0.8 part of realgar powder and 60-64 parts of iron. The surface of the modified nanometer molybdenum disulfide is covered with a layer of copper film used as a solid lubricating agent, meanwhile, strontium sulfide, scandium, niobium, aluminum and other ingredients are added, the product prepared through sintering, infiltration and heat treatment technologies is high in strength, good in heat-conducting property and excellent in wear resistance, and the working condition requirements of a natural gas fuel engine can be met.

The invention discloses a light sensitive energy-saving street lamp. A sensor is arranged at the top of the street lamp and can control on and off the street lamp according to the intensity of visible light, a light sensitive resistor is arranged in the sensor and comprises an upper electrode layer, a lower electrode layer and a middle light sensitive material layer, and the light sensitive material layer comprises gallium sulfide, cadmium sulfide, zinc sulfide, copper sulfide, beryllium sulfide, strontium sulfide, germanium oxide, niobium oxide, hafnium, iridium and Y4-x-yLuxFeyO6. A light sensitive material is low in manufacturing cost, resistant to ageing, wide in application field and beneficial to large-scale popularization and application, has excellent weather resistance and corrosion resistance and has strong compatibility with the sensor, the light sensitive energy-saving street lamp can automatically sense the visible light, can be automatically turned on and turned off according to the intensity of the visible light and conforms to the advocated trend of energy conservation and environmental protection, and resources are reasonably distributed and used.

The invention discloses a continuous type extractor for strontium sulfide, which comprises a closed type hydrolyzing tank, a movable mesh belt and a transmission device, wherein the movable mesh belt is supported by bipatch big roller chain riveted seamless steel tubes, and is dragged by the transmission device to move in the hydrolyzing tank. The closed type hydrolyzing tank is also provided with a material inlet, a water inlet, a water outlet and a slag outlet. The material inlet is formed in the upper part of one end of the hydrolyzing tank, and rightly faces the movable mesh belt. A distributor is arranged at the material inlet. The water inlet is arranged at the other end of the hydrolyzing tank. The invention further discloses an extraction method of strontium sulfide. According to the invention, a dynamic continuous extraction way is adopted, so that the mechanization degree is greatly increased, and the labor intensity of the worker is relieved; and continuous production is adopted, so that the quality of extracted liquid can be increased, and the undulating range of concentration of the extracted liquid is reduced, so as to be helpful for decreasing the control difficultyof extracting production.

The invention discloses a strontium carbonate production method. The strontium carbonate production method comprises the following steps: S100: after smashing celestite and raw coal via a smashing machine, feeding the smashed celestite and raw coal into a bin; S200: feeding raw materials in the bin into a rotary kiln through an oscillating feeder (1) and a conveying device (2); S300, ball-millingrough strontium sulfide into powder through a ball-miller; S400: leaching to obtain leaching liquid containing strontium ions; S500: refining; S600: carrying out chemical combination to generate a strontium carbonate precipitate and sodium sulfide mixture; S700: washing, pulping, drying and smashing sodium carbonate obtained by filtering and separating to obtain strontium carbonate particles; andS800, cooling and packing to obtain a final strontium carbonate product. The quality of the strontium carbonate product is improved, and the production efficiency is improved.

The invention discloses attapulgite powdery animal depilating agent. The main points of the technical proposal are as follows: the attapulgite powdery animal depilating agent is composed of purified attapulgite clay, sodium sulfide, calcium thioglycollate, strontium sulfide, sodium hydroxide and sodium dodecyl sulfate. The production method of the attapulgite powdery animal depilating agent comprises the following steps: feeding, mixing, milling and packaging into finished attapulgite powdery animal depilating agent. In the attapulgite powdery animal depilating agent, the purified attapulgite clay serves as the main raw material, and no additional thickening agent and humectant need to be added in; the purified attapulgite clay has good adhesive force and can lead the attapulgite powdery animal depilating agent to be firmly adhered to the surface of the fur, thereby increasing the contact area with the hair and improving the use effect of the depilating agent. The attapulgite powdery animal depilating agent has strong penetrability, can expand and enlarge the hair, solidify, weaken and break the hair follicle protein, and is applicable in the depilation of animals.

The invention relates to a mixture for the production of amber glass colored in bulk, an amber glass obtained from said vitrifiable mixture based on a silicon-sodium-calcium composition and a method for the production of such glass Method for tube and blank 2 for bulb 1 . The mixture comprises 0.01% to 1% by weight of molybdenum disulfide and 0.01% to 7% by weight of strontium sulfide relative to 100% by weight of the mixture. The glass thus obtained is free of harmful products such as cadmium, and it is obtained without additional heat treatment for obtaining the desired color.

The invention relates to a preparation method of alkali metal and alkaline earth metal sulfide. The preparation method comprises the following steps: (1) uniformly mixing a substance containing alkali metal or alkaline earth metal and thiourea according to a molar ratio of alkali metal or alkaline earth metal element in the substance containing alkali metal or alkaline earth metal to sulfur element in thiourea of 1: (0.4-8); (2) heating the uniform mixture in vacuum or in a certain atmosphere, and carrying out heat preservation for a period of time; and (3) after the heat preservation is finished, naturally cooling the product to room temperature, and then taking out the product, namely the alkali metal and alkaline earth metal sulfide. The method can be used for preparing alkali metal and alkaline earth metal sulfides such as lithium sulfide, sodium sulfide, potassium sulfide, magnesium sulfide, calcium sulfide, strontium sulfide and barium sulfide, the selected raw materials are low in cost, the time for obtaining the product is short, the operation is simple, the equipment requirement is low, the yield is high, and industrial mass production is easy.