39 results about "POTASSIUM CHLORIDE/SODIUM CHLORIDE" patented technology

The invention provides a 5-chloro-2,3-dihydro-1-indanone preparation method, which comprises: carrying out a reaction by using chlorobenzene and 3-chloro-propionyl chloride as raw materials and usinga mixed molten salt as catalyst and a solvent to obtain 5-chloro-2,3-dihydro-1-indanone, wherein the mixed molten salt is a mixture comprising any two or three materials selected from potassium chloride, sodium chloride and aluminum chloride. According to the present invention, the mixed molten salt potassium chloride-sodium chloride-aluminum chloride is used as the catalyst, and becomes liquid ata temperature of about 100 DEG C, such that the problem that aluminum chloride is sublimated before melting is solved; and the mixed molten salt potassium chloride-sodium chloride-aluminum chloride is simultaneously used as the catalyst and the solvent in the reaction of chlorobenzene and 3-chloro-propionyl chloride, such that the conversion rate of the reaction can achieve 98% at the temperatureof 120-130 DEG C, and the yield of 5-chloro indanone can achieve 75%.

The invention relates to electrolytic plating assistant for hot dip galvanizing of a steel wire. Electrolytic plating assistant comprises the following components: 30-220 g / L of zinc chloride, 0-150 g / L of potassium chloride, 0-150 g / L of sodium chloride, 2-90 g / L of ammonium chloride, 0-100 g / L of boric acid, 0-70 g / L of acetic acid, 1-25 g / L of sodium fluoride, 2-50 g / L of cerium chloride, 0-50g / L of potassium fluozirconate, 0-50 g / L of methanol, 0.5-20 g / L of hydrogen peroxide and the balance of water. The electrolytic plating assisting method comprises the following steps: washing with alkali, removing oil, washing with water, washing with acid to remove rust, washing with water, activating with weak acid, electrolyzing to assist plating, drying, and purifying the electrolytic plating assistant. The method can reduce the generation of AlCl3, prevent skip plating and reduce the generation of smoke dust. The electrolytic plating assistant has the characteristic of relatively high melting point, and thus, can increase the drying temperature and shorten the drying time. The dried plating assistant has the characteristics of low brittleness, high compatibility with electrogalvanizing, and low tendency to shedding.

The invention provides a quenching method of a 45# steel workpiece. The quenching method comprises the following steps of: heating the workpiece to 880 DEG C-890 DEG C in a heating device, and preserving the heat for 1 hour-2 hours; quenching by using a quenching agent with temperature of 100 DEG C-120 DEG C, and tempering at 500 DEG C-510 DEG C, wherein the quenching agent consists of the following substances in percentage by mass: 5%-6% of potassium chloride, 1%-2% of sodium chloride and the balance of water. The 45# steel made by using the quenching method disclosed by the invention cannot crack during quenching.

The invention discloses a chloride type trivalent chromium black chromium plating solution which comprises the following components by weight: 30 to 70g / L of chromium trichloride, 150-320g / L of conducting salt, 20 to 70g / L of complexing agent, 2 to 10g / L of blackening agent, and 0.2 to 1g / L of surfactant, wherein the conducting salt is one of or a mixture of potassium chloride, sodium chloride, ammonia chloride, sodium sulfate and potassium sulfate; the complexing agent is one of or a mixture of ammonium oxalate, malic acid and formic acid; and the blackening agent is one of or a mixture of ferric chloride, potassium thiocyanate, ammonium thiocyanate and cobalt nitrate. According to the chloride type trivalent chromium black chromium plating solution, a trivalent black chromium plating layer with thickness being 0.2 to 0.5microns can be obtained, an appearance of the plating layer is uniform and bright black, and the colors of a high electric current density region and a low electric current density region are essentially identical; and the chloride type trivalent chromium black chromium plating solution does not yellow or change color even if being placed in air in a plum rain season, and the mildews can not be found.

The invention relates to a composite MVR evaporative crystallization separation method for potassium and sodium chlorate mixture wastewater, which comprises the following steps: firstly, evaporating and concentrating a wastewater stock solution containing potassium chloride and sodium chloride mixed salt into a concentrated solution in an MVR evaporative concentration continuous crystallizer; feeding concentrated supernate at the upper part of a separation chamber at the lower part of the MVR evaporation and concentration continuous crystallizer into a potassium chloride continuous crystallizer for cold crystallization to separate out potassium chloride, and feeding low-potassium supernate at the upper part of the potassium chloride continuous crystallizer into a sodium chloride evaporation continuous crystallizer for further evaporation and concentration to separate out sodium chloride; feeding the low-sodium supernate at the upper part of the separation chamber at the lower part of the sodium chloride evaporation continuous crystallizer into the MVR evaporative concentration continuous crystallizer; and evaporating the wastewater stock solution and separating potassium and sodium salts. Compared with an existing multi-effect evaporation hot and cold crystallization separation method and an MVR evaporation crystallization separation method, the method can save energy by 30-45%, and has the advantages of being low in energy consumption, good in energy-saving effect, small in equipment investment and the like.

The invention relates to a method for producing potassium chloride by using alumina clinker kiln dust in a sintering method, which belongs to the production technology of potassium salt. Firstly, the kiln dust is leached with distilled water, and the leaching solution is added with a desulfurizing agent for desulfurization, and the desulfurized leaching solution is heated, Evaporate and concentrate, conduct the first crystallization, separate the crystals, evaporate and concentrate the separated primary crystallization mother liquor again, cool to obtain the second crystallization, separate the crystallization, evaporate and concentrate the filtrate and heat it to 80-99°C to become a saturated solution , plus seed crystals, and after cooling and natural cooling, mixed potassium chloride crystals are precipitated. Make full use of alumina kiln dust, turn waste into treasure, reduce environmental pollution caused by waste discharge, and reduce the production cost of potassium chloride. The product potassium chloride and by-products can be obtained through water leaching, impurity removal, evaporation and crystallization of kiln dust Sodium chloride and CaSO4·0.5H2O, and the process is short, low energy consumption, easy to operate, which is beneficial to obtain potassium chloride products with high purity.

According to some embodiments there is provided a process for the recovery of SOP from Sulphate bearing mineral and Carnallite or Sylvenite, comprising: Dissolving Carnallite in water to obtain Sylvenite and high Magnesium Chloride brine; Adding Sodium Sulphate to said Carnallite to produce mixture of Kainte\Leonite, KCl and NaCl precipitant and brine containing Mg Cl2, KCl, NaCl; Separating the NaCl from the mixture; Obtaining a precipitant mixture of Leonite with KCl; Filtering said Leonite and washing with water to yield pure mixture of Leonite with KCl; Adding KCl to the Leonite with the KCl; and Decompose said Leonite with the KCl to SOP.

The invention belongs to the technical field of vitamin detection methods, and particularly relates to a preparation method of a modified electrode for detecting vitamin B1. The method comprises the following steps: selecting a glassy carbon electrode or a copper electrode as a matrix electrode, and polishing and cleaning the surface of the matrix electrode for later use; and dropwise coating or electroplating a modification solution on the surface of the matrix electrode, and drying by using an infrared lamp to obtain the modified electrode, wherein the modification solution is composed of one or more of hydrochloric acid, nitric acid, acetic acid, bismuth nitrate, mercury nitrate, silver nitrate, potassium chloride, sodium chloride, cadmium nitrate, lead nitrate and amino black 10B, andthe concentration of each component ranges from 0.0001 mol / L to 1 mol / L. The method overcomes the defects in the prior art, has the advantages of high sensitivity, good reproducibility, convenience and quickness in operation and the like, and accurately measures the content of vitamin B1 in a blood sample.

The invention discloses a preparation method of a terbium-doped lithium manganate material for a lithium ion battery. The method comprises the following steps: (a) weighing lithium carbonate, manganese oxide and terbium oxide according to a stoichiometric ratio; (b) adding anhydrous ethanol into the raw materials weighed in the step a, carrying out ball milling, then taking out the product and drying to obtain a terbium-doped lithium manganate raw material; (c) adding acetate fiber and mixed molten salt of potassium chloride and sodium chloride into the terbium-doped lithium manganate raw material obtained in the step b, adding the anhydrous ethanol into the obtained mixture, carrying out ball milling and then drying; (d) sintering the raw material treated in the step c, cooling after sintering, washing the obtained powder with water, and drying to obtain the terbium-doped lithium manganate material. The terbium-doped lithium manganate material for the lithium ion battery has higher discharge capacity; the terbium-doped lithium manganate material has a hollow tubular structure and is loose in tube wall, thus relieving the problem of volume expansion caused in charging and discharging processes; the stability of the terbium-doped lithium manganate material is improved by using inorganic filler titanium dioxide in the acetate fiber.

The invention relates to a quality control method of a potassium chloride and sodium chloride injection. The quality control method comprises the following steps: determining the content, detecting properties, identifying and detecting. The content determination step comprises the determination of the total chlorinity, the potassium chloride content and the sodium chloride content; the detecting step comprises the detection of pH values, heavy metals, arsenic salts, insoluble particles, osmotic pressure ratios, bacterial endotoxin and sterility. The quality control method provides detection indexes, detection means, technical methods and the like for related production and detection mechanisms so as to control the quality of products, ensure the safety of medicines, better guide production and enable the production process control to be strict and reasonable.

The invention discloses a method for preparing a high Mooney viscosity polyacrylate composition, which comprises the steps of: 1) adding acrylate monomer raw materials, crosslinkable monomer raw materials and regulators into an emulsifier aqueous solution; 2) adding One of potassium chloride, sodium chloride, potassium sulfate, sodium sulfate, potassium nitrate or sodium nitrate is added to the emulsifier aqueous solution, and the dosage is 1 / 10000 to 5 / 1000; 3) Under the protection of nitrogen, the copolymerization reaction is initiated by free radicals; 4) After the copolymerization reaction is completed, a reducing agent is added for post-treatment; 5) A coagulant is added to break the emulsion, rinsed with water, and dehydrated to obtain a combined product. According to the method for preparing the high Mooney viscosity polyacrylate composition of the present invention, the Mooney viscosity of the prepared acrylate rubber generally increases, and the highest can reach more than 80.

The invention provides a preparation method of 5-chloro-1-indanone, which belongs to the technical field of organic synthesis. Taking chlorobenzene and 3-chloropropionyl chloride as raw materials, using mixed molten salt and heteropolyacid as a catalyst, and heating up to react to obtain 5-chloro-1-indanone; the heteropolyacid is SiO 2 Loading phosphotungstic acid, the mixed molten salt is a mixture of any two or three of potassium chloride, sodium chloride and aluminum chloride. In the present invention, by controlling the feeding temperature and feeding sequence, the reaction is carried out at a relatively low temperature, avoiding the problems of using aluminum trichloride as a catalyst with a large amount of solids, high temperature, violent reaction, large amount of tar, carbonization of raw materials, and more three wastes. , the yield of 5-chloro-1-indanone can be as high as 85%.

A method for preparing europium-doped lithium cobalt oxides for a lithium ion battery includes the following steps that firstly, lithium carbonate, cobaltous oxide and europium oxide are weighed according to the stoichiometric ratio; secondly, anhydrous ethanol is added into the raw materials weighed in the first step, ball milling is conducted, the mixture is taken out and dried, and an europium-doped lithium cobalt oxide raw material is obtained; thirdly, acetate fiber and potassium chloride-sodium chloride mixed molten salt are added into the europium-doped lithium cobalt oxide raw material prepared in the second step, then anhydrous ethanol is added, ball milling is conducted, and then drying is conducted; fourthly, the raw materials processed in the third step are sintered and then cooled, obtained powder is washed with water and dried, and europium-doped lithium cobalt oxides are prepared. The europium-doped lithium cobalt oxides for the lithium ion battery have higher discharge capacity and gram volume and are of a hollow tubular structure, the pipe wall is of a loose structure, the volume expansion problem in the charging and discharging process can be relieved, and circulation performance of the lithium ion battery can be improved.

The invention discloses a super-cooling DZ125 high-temperature alloy purifying agent and a preparation method thereof. The method comprises the following steps: in percentage by mass, weighing 40 to 50 percent of calcium fluoride, 16 to 30 percent of aluminum fluoride, 10 to 15 percent of cryolite, 5 to 8 percent of sodium chloride, 5 to 8 percent of potassium chloride, 4 to 6 percent of calcium oxide and 1 to 2 percent of rare-earth compound; putting the potassium chloride, the sodium chloride, the cryolite, the calcium fluoride, the aluminum fluoride and the calcium oxide into a crucible, stirring the mixture evenly, and raising the temperature to between 1,050 and 1,100 DEG C and keeping the temperature for 3 to 4 hours; then breaking sintered blocky molten salt, milling the broken molten salt into powder in a ball mill, and screening the powder with a sieve selected from No. 20 to No. 40; and adding the rare-earth compound into the powder, mixing the mixture evenly by the ball mill, and filling the mixture into a drier for standby after preparation. The super-cooling DZ125 high-temperature alloy purifying agent can effectively adsorb and dissolve oxidized inclusions, and has the advantages of good chemical stability, less harmful gas, simple operation process, convenient adding and low price.