590 results about "Kainite" patented technology

A water-dispersible particle is provided that includes a sulfate or phosphate of potash in an amount ranging from 5% to 99.9% by weight of the total dry weight of the particle. A binder component is present in an amount from 1% to 95% by weight. The sulfate or phosphate of potash and the binder component on that contact with water causes particle dispersion into more than 100 pieces.

A process for making a water-dispersible particle includes mechanical aggregation of a sulfate or phosphate of potash into a pellet. A binder component is present in the particle in an amount ranging from 1% to 95% by weight. The sulfate or phosphate of potash and the binder component are present in a form such that contact with water causes particle dispersion into more than 100 pieces. The pellet is then dried and ready to be applied.

The present invention relates to a novel form of 5-methoxy-2-[[(4-methoxy-3,5-dimethyl-2-pyridinyl)-methyl]sulfinyl]-1H-benzimidazole, known under the generic name omeprazole. More specifically, it relates to a novel crystalline form of the potassium salt of the (S)-enantiomer of 5-methoxy-2-[[(4-methoxy-3,5-dimethyl-2-pyridinyl)methyl]sulfinyl]-1H-benzimidazole. The present invention also relates to processes for preparing such a form of the potassium salt of (S)-omeprazole and pharmaceutical compositions containing it.

A catalyst for preparing low-carbon alcohol mixture from synthetic gas contains Mo (2-40 %), Ni (4-10%), Mn (0.1-5.0%), K (5-15%), S (20-40%) and bentone, and is prepared through reaction of ammoniumsulfide solution or hydrogen sulfide gas on ammonium molybdate, adding concentrated acetic acid, thermal stirring, cooling for deposition, adding deionized water for dissolving doposit to obtain solution of ammonium thiomolybdate, dropping the solution along with the mixed solution of nickel acetate and manganese acetate in acetic acid to form black deposit, filtering, washing, baking, mixing with bentone, and tabletting. Its advantages are high resistance to S and no carbon deposit.

The invention discloses a method for producing potassium salt and sodium salt by using waste incineration fly ash, comprising the following steps: extracting waste incineration fly ash with water to obtain an extract; removing calcium ions and heavy metal impurities in the extract, and adjusting the pH of the solution to 6-8; heating and evaporating to concentrate the solution obtained in the previous step until crystallization, immediately filtering to obtain crystals sodium chloride, and naturally cooling the filtrate to room temperature for crystallization to obtain crystals crude potassiumchloride; dissolving the crude potassium chloride in water with a mass ratio of the crude potassium chloride to water is 1:1-1:1.9, heating and evaporating the solution until crystallization, and immediately separating the solid and liquid to get crystals pure potassium chloride and filtrate; and supplementing sodium chloride into the filtrate obtained in the previous step, cooling for crystallization, and filtering to obtain crystals pure potassium chloride. The invention can separate sodium salt and potassium salt in fly ash washing wastewater, and obtain high purity or industrial grade ofsodium chloride and potassium chloride crystals.

The invention provides a steam hot aerosol fire-extinguishing composite which contains 30-80wt percent of oxidant, 10-60wt percent of fuel additive and 2-30wt percent of cohesion solidification molding auxiliary agent. The oxidant can be one or more of the following substances: potassium salt, strontium salt, ammonium salt, magnesium salt, nitrocellulose and nitroglycerin; the fuel additive can be one or more of the following substances: azos, azoles, amino-guanidine nitrate, sodium bicarbonate, melamine, cyanoguanidine, carbamide, hexamine, triaminoguanidine nitrate, olefin, saccharose, aluminium powder, magnesite powder and magnesium-aluminium alloy power; the cohesion solidification molding auxiliary agent can be one or more of the following substances: phenol formaldehyde resin, ethoxyline resin, glycidyl azide, urethane rubber, hydroxyl-terminated polybutadiene, polyisobutylene, acetyl tributyl citrate, carboxymethyl cellulose, polyvinyl alcohol phenolic resin and acrylic resin. The invention also provides a fire extinguishing method and a fire extinguishing device adopting the composite. The invention has strong fire extinguishing capacity and fewer hazardous materials and can be applied to different places.

The invention discloses a potash salt ore goaf filling method, including the following steps: potash salt ore is subject to mineral separation, so as to obtain potash salt ore tailing; magnesium cement and the potash salt ore tailing are mixed and stirred into filling pulp; and the filling pulp is conveyed to potash salt ore goaf. According to the potash salt ore goaf filling process of the invention, pulp made by mixing magnesium cement and tailing is taken as filling main material, as the magnesium cement is mainly magnesium oxide, magnesium oxide water soluble magnesium salt is taken as gelling material, then water is added for blending, and air hardening gelled body, thus meeting the strength requirement of goaf filing.

A novel integrated process for the recovery of sulphate of potash (SOP) from sulphate rich bittern is disclosed. The process requires only bittern and lime as raw materials. Kainite type mixed salt is obtained by fractional crystallization of the bittern, Kainite is converted to schoenite with simultaneous removal of NaCl by processing it with water and end liquor obtained from reaction of schoenite with MOP for its conversion to SOP. The end liquor from kainite to schoenite conversion (SEL) is used for the recovery of MOP. SEL is desulphated and supplemented with MgCl₂ using end bittern generated in the process of making carnallite. The carnallite is decomposed to get crude potash which in turn processed to get MOP. The carnallite decomposed liquor produced in the decomposition of carnallite is reacted with hydrated lime for preparing CaCl₂ solution and high purity Mg(OH)₂ having low boron content, The CaCl₂ solution is used for desulphatation of SEL producing high purity gypsum as a byproduct. It is shown that the liquid steams containing potash are recycled in the process, the recovery of potash in the form of SOP is quantitative.

The invention relates to a low foam laundry liquid which is composed of the following components in percentage by weight: 5-7% of sodium dodecyl benzene sulfonate, 6-10% of fatty alcohol-polyoxyethylene ether (3) sodium sulfate (70%), 1-3% of coconut oil acid diethanolamine (1:1.5), 4-6% of fatty alcohol-polyoxyethylene ether (EO=6-12), 1-2% of C12-18 fatty acid potassium or amine salt and the balance of water. The detergency of the laundry liquid of the invention is in accord with the standard of the Class B in QB/T1224-2007, and the laundry liquid can efficiently reduce foams. The invention has the advantages of favorable rinsing effect, water saving, energy saving and high cleanness of rinsed clothes.

The invention is a method for producing phosphoric acid and soluble potassium salt by phosphorus ore and potash feldspar, characterized in that, the method comprises: selecting phosphorus ore containing P2O5 15-30% and potash feldspar containing K2O 10-18% to mix with coke; crushing, ball milling, balling by adding water and drying; calcining for 10-30 minutes under temperature of 1100-1400DEG C; then soaking the calcined product in 1-5% citric acid solution for 12 hours, wherein, the soaking temperature is between room temperature and 60 DEG C; crystallizing and purifying the separated filtering solution; obtaining the soluble potassium salt; P2O5 in the phosphorus ore is reduced into phosphor vapor to be volatilized, the phosphor vapor above the material layer can be oxidized into P2O5 gas by the air introduced into the furnace, in the hydration apparatus, P2O5 gas can be absorbed to obtain the phosphoric acid. the invention solves the problems of waste slag and waste gas emissions during producing phosphoric acid, also alleviates the existing state that in our country, the soluble kalium resources are depended on importation, the method of the invention is economical and environment-protecting.

The invention discloses a preparation method of a catalyst for preparing propylene by virtue of propane dehydrogenation. The catalyst comprises an aluminum oxide carrier and active components with the following contents in percentage by mass calculated based on the carrier: 1-3% of calcium silicate salt, 1-3% of cerium oxide, 0.1-2.0% of a platinum group metal, 0.5-5.0% of potassium, 0.2-5.0% of cerium or samarium, 0.3-10% of halogen, 1-5% of a pore forming agent and the balance of impurities, wherein the molar ratio of cerium or samarium to the platinum group metal is 7:8; the platinum group metal is platinum; and halogen is chlorine. The preparation method comprises the following steps: soaking, drying and roasting the aluminum oxide carrier by using a soluble compound solution of cerium or samarium and a calcium silicate salt solution, then soaking, drying and roasting by using a solution containing compounds of the platinum group metal and hydrogen halide, and then soaking, drying and roasting by using a potassium salt solution; and then mixing cerium oxide and the pore forming agent with corresponding amounts, and roasting for 3 hours at 600 DEG C to obtain the catalyst for preparing propylene by virtue of propane dehydrogenation.

The invention relates to a method for recovering and separating a potassium salt and a sodium salt from waste incineration fly ash, which comprises the following steps of: extracting the potassium salt, the sodium salt and a calcium salt from the waste incineration fly ash by quartz sand and water to obtain high-concentration salt-containing water, separating the quartz sand from the fly ash, returning the quartz sand for continue use; adjusting the pH value of the high-concentration salt-containing water to 5-7 with an acid, and conducting evaporating and concentrating to obtain potassium andsodium mixed salts and a residual calcium chloride saturated solution; conducting flotation separation on the potassium and sodium mixed salts in saturated potassium chloride and sodium chloride solutions, and conducting filtration, so as to obtain a foam product, namely potassium chloride, and tailings slurry, namely sodium chloride; respectively conducting stirring washing on the potassium chloride and sodium chloride obtained by flotation through corresponding saturated salt water, and conducting filtering to obtain industrial grade potassium chloride and sodium chloride products, whereina washing solution is a saturated potassium chloride and sodium chloride mixed solution and is returned to the flotation procedure as a supplement solution of a flotation medium. The method effectively separates soluble salts in the fly ash: potassium chloride, sodium chloride and calcium chloride without decalcification to obtain high purity or industrial grade potassium chloride and sodium chloride products; and the efficiency-cost ratio of the treatment process is greatly improved.

The invention discloses energetic ion salts of 1-nitramine-2, 4-dimetridazloe and a preparation method thereof, and belongs to the technical field of energetic materials. The synthetic method is as follows: dissolving the 1-nitramine-2, 4-dimetridazloe in deionized water to obtain a pale yellow clear liquid, adding with stirring 0.5 time molar equivalent of potassium carbonate at room temperature for in-situ generation of 1-nitramine-2, 4-dimetridazloe potassium salt, then adding one time molar equivalent of ammonium chloride, hydrazine hydrochloride, guanidine hydrochloride, monoaminoguanidine hydrochloride, diaminoguanidine hydrochloride, triaminoguanidine hydrochloride and 3, 4, 5-triamino-1, 2, 4-triazole hydrochloride, stirring to precipitate a pale yellow solid precipitate, after about 1 hour of reaction, filtering the pale yellow precipitate, further recrystallizing a coarse product by use of an acetone and diethyl ether mixed solvent to obtain a pure product. The synthetic method of the invention is simple, mild in condition and high in yield, and is environmental friendly due to using of the deionized water as a solvent. The density of involved seven salts is 1.70-1.93g cm<-3>, the detonation velocity calculated by EXPLO software is between 8370 and 9209 m s<-1>, the detonation pressure is between 29.3 and 40.5 GPa, the actually measured impact sensitivity is 4-40J, the detonation performance is excellent, and the energetic ion salts are potential energetic materials.

The invention provides a preparation method of glyphosate potassium salt solid wet product or relative raw pesticide, which comprises mixing solid glyphosate with some water, to be added and reacted with alkali containing potassium cation, controlling the reaction temperature, cooling, crystallizing and drying to obtain glyphosate potassium salt drug. The invention further provides a preparation method of glyphosate potassium salt raw pesticide, which comprises that solid glyphosate is mixed some water, to be added and reacted with alkali containing potassium cation, the reaction mixture is directly dried to obtain glyphosate potassium salt raw pesticide. The invention further provides a high-content soluble solid glyphosate potassium salt. The inventive glyphosate potassium salt raw pesticide, compared with other glyphosate potassium salts, has better weeding speed and rain resistance in same conditions, while the potassium ions on leaf and in soil can be effectively absorbed by plantto feed potassium fertilizer. And the invention has simple package, storage and transmission of prepared glyphosate potassium salt raw pesticide, to reduce cost.

The present invention discloses a method for repairing soil contaminated by heavy metal by utilizing plant. Said method is characterized by that in the soil contaminated by heavy metal the maize can be planted, before harvest at least two additives selected from editic acid or its sodium salt or its potassium salt (EDTA), nitrilotriacetic acid or its sodium salt or its potassium salt (NTA) and citric aid or its sodium salt or its potassium salt (CA) can be applied, and then the aerial part of maize can be harvested so as to attain the goal of repairing soil contaminated by heavy metal.

The invention discloses a method for mining and machining a water-soluble potassium salt mine. The method disclosed by the invention comprises the following steps: firstly, exploiting the potassium salt mine by adopting a well drilling water soluble method; evaporating and crystallizing the exploited brine to sequentially precipitate a sodium salt and a potassium salt; refrigerating and crystallizing the residual feed liquid to further precipitate potassium chloride; and respectively filtering and drying the precipitated sodium salt and potassium salt to obtain finished sodium salt and potassium salt, wherein a part of mother liquor after the sodium salt and potassium salt are precipitated is used for preparing magnesium chloride, and the other part is used for preparing magnesium oxide. The method disclosed by the invention is particularly suitable for the exploitation of a potassium mine having the defects of complicated geological and hydrologic conditions, over-shallow or over-deep burial, poor quality and high carnallite content, can reduce ground collapse, improves the exploitation rate, can prepare a potassium fertilizer in a large scale and has the advantages of low energy consumption and little pollution and waste discharge.

The leach mining method for kalium in polyhalite comprises: after leaching treatment to broken ore, recovering leaching liquid contained Ca2+ and/or Ba2+, and/or at least one from CO32-, HCO3-, PO43-, HPO42-, and SiO32-, while preferring CaCl2 liquid. This method fits to deep buried ore and ground or superficial layer ore with extraction rate more than 80%.

The invention relates to a preparation method of meter platinum, including that dinitric acid cis-((1R, 2R)-1, 2-diaminocyclohexane-dihydrate) platinum (II) and myristate react in solvent; wherein the solvent is composed of alkyl alcohol and water, the alkyl alcohol is methyl alcohol, ethyl alcohol, propyl alcohol or isopropyl alcohol, the myristate is sodium salt, kali salt or ammonium salt of myristic acid, reaction temperature is 20-80 DEG C, and the mass ratio of dinitric acid cis-((1R, 2R)-1, 2-diaminocyclohexane-dihydrate) platinum (II) and water is 1: 10-100. The volume ratio of water and alkyl alcohol is 1: 0.5-2 preferentially, and 1:1 more preferentially. The preparation method has simple steps, reaction medium can dissolve myristate, thus reaction can be effectively carried out and the method can be applied to industrialized production.

The invention relates to a synthesis method of methyl-alpha-fluoroacrylate and analogues thereof. The method comprises the following steps: step 1, based on methyl fluoroacrylate and dimethyl oxalate serving as raw materials, dissolving the raw materials in a solvent, and adding base for carrying out condensation reaction so as to generate sodium enolate or potassium enolate intermediate; and step 2, reacting sodium enolate or potassium enolate intermediate with paraformaldehyde or trioxane in the solvent so as to generate methyl-alpha-fluoroacrylate. According to the invention, cheap methyl fluoroacrylate and dimethyl oxalate are used as the raw materials, and the low-cost solvent and other reactants are selected, thus the method has the advantages of low preparation cost and high yield and can be suitable for large-scale industrial production.

The present invention relates to one kind of sodium-potassium andrographolide-semisuccinate and its preparations. On the basis of potassium andrographolide-semisuccinate, which is not enough stable and is likely to produce precipitate and negative effect, sodium-potassium andrographolide-semisuccinate is developed and has relatively high stability and less side effect. The sodium-potassium andrographolide-semisuccinate is prepared into injection, powder for injection and other forms.

The Tilmisartan salt of the present invention is salt formed with Tilmisartan and alkali metal, alkali earth metal, pharmaceutically acceptable amine, amino acid. It may be sodium salt, potassium salt, calcium salt, magnesium salt and amine salt, preferably sodium salt, potassium salt or tert-butyl amine salt. The preparation of Tilmisartan salt includes the following steps: reaction between Tilmisartan and organic alkali, inorganic alkali, arginine or lysine in organic solvent or water to produce target product, and collecting Tilmisartan salt. The Tilmisartan salt may be used to replace available Tilmisartan.