50 results about "Potassium Metaphosphate" patented technology

The invention relates to a neodymium-doped potassium gadolinium phosphate laser crystal of which the molecular formula is Nd:KGdP4O12, belonging to monoclinic systems. The neodymium-doped potassium gadolinium phosphate laser crystal has C2/c space group structure, wherein neodymium ions are used as doping ion to substitute the lattice position of gadolinium ions, and the doping content of the neodymium is 1-20at/%.The preparation method is implemented in a way that: a mixture of Gd2O3, Nd2O3, K2CO3 and NH4H2PO4 is used as a raw material, potassium metaphosphate obtained by reacting K2CO3 and NH4H2PO4 is used as a fluxing agent, and a self-flux method is utilized to prepare the neodymium-doped potassium gadolinium phosphate laser crystal.The laser crystal preparation technique is simple and easy to operate; the prepared crystal can not be easily cloven, has the advantages of of moderate hardness, favorable mechanical properties, favorable thermal properties and favorable optical spectral characteristics, and is used as a working substance in a solid laser; a flash lamp or LD is used as a pumping source to activate the laser output of which the wavelength is 1.06 mu m; and thus, the invention can be widely used in the fields of spectroscopy, biomedicine and military affairs.

Potassium-containing polyphosphate glasses having a relatively high amount of potassium and a relatively low level of insoluble material (e.g., less than about 10% by weight), and a method for their production that includes using a boron-containing glass-former additive. More specifically, these polyphosphate glasses may be described according to the formula M_(n+2)O(PO₃)_n, where M is at least K or K+Na and the glasses have a mole % M-as-K that is about 33 to 100. These polyphosphate glasses may be used in reduced sodium foods (e.g., beverages and meat products).

The invention relates to a chemical product production technology, and in particular relates to a production method and production equiopment of potassium polymetaphosphate. The production method of the potassium polymetaphosphate comprises the following steps: holding monopotassium phosphate with a ceramic container; and heating the inner part of the ceramic container to a first temperature, and maintaining the first temperature for a first preset time. The production equipment of the potassium polymetaphosphate comprises a ceramic container and a heating device, wherein the ceramic container is used for holding monopotassium phosphate; the heating device is used for heating the inner part of the ceramic container which is used for holding the monopotassium phosphate to the first temperature and also for maintaining the first temperature for the first preset time; and the inner part of the ceramic container is heated to a second temperature and maintained for a second preset time. According to the production method and production equiopment of potassium polymetaphosphate, the influence of metal ions on the purity of potassium polymetaphosphate can be reduced.

The invention discloses a bio-organic fertilizer. The bio-organic fertilizer is characterized by comprising the following substances in parts by weight: 90-120 parts of excrements of livestock, 15-20 parts of sodium dihydrogen phosphate, 9-12 parts of disodium hydrogen phosphate, 8-12 parts of sodium polyphosphate, 2-3 parts of chitin, 5-9 parts of pachystachys lutea saw dust, 3-5 parts of rambler rose saw dust, 4-6 parts of banana shrub saw dust, 8-11 parts of potassium metaphosphate, 3-9 parts of diammonium phosphate, 9-15 parts of Chinese pyrola herb, 4-6 parts of inula flower, 2-6 parts of common yam rhizome, 5 parts of potassium dihydrogen phosphate and 2-7 parts of anhydrous calcium chloride. The bio-organic fertilizer is capable of realizing plant growth, promoting the plant growth, inhibiting the growth of various bacteria in soil and inhibiting the growth of various nematodes or soft insects in soil by improving the own immune function of plants, promoting plant growth and improving the own conditions of the soil.

The invention relates to a method for producing agricultural potassium metaphosphate, comprising the following steps: mixing agricultural monoammonium phosphate with potassium chloride, adding the mixture of the agricultural monoammonium phosphate and the potassium chloride to a reactor and heating the reactor to make the agricultural monoammonium phosphate and the potassium chloride react to generate molten potassium metaphosphate, sublimed ammonium chloride and water vapor; discharging the molten potassium metaphosphate, cooling and grinding to obtain the potassium metaphosphate product after the reaction; and cooling and recovering the sublimed ammonium chloride to be used as the agricultural fertilizer. The agricultural monoammonium phosphate accounts for 60-75 percent by weight, and the potassium chloride accounts for 25-40 percent by weight; the mass ratio of the agricultural monoammonium phosphate to the potassium chloride is 100:47-55; the agricultural monoammonium phosphate and the potassium chloride react at 600-900 DEG C are stand for 1-4h; and the reactor is a graphite reactor. The method can be used for producing the agricultural potassium metaphosphate and the ammonium chloride product without discharging the waste material, is easy to control, provides a new way for producing the slow-release potassium-phosphate fertilizer and has better economic and environmental-friendly benefits.

The invention discloses a high-temperature-resistant noise-reduction anti-rusting paint for a power distribution cabinet. The high-temperature-resistant noise-reduction anti-rusting paint is characterized in that the high-temperature-resistant noise-reduction anti-rusting paint is prepared from the following raw materials in parts by weight: 3 to 5 parts of phytic acid, 1 to 2 parts of iron oxide red, 2 to 3 parts of titanium dioxide, 1 to 3 parts of magnet powder, 2 to 4 parts of potassium silicate, 2 to 3 parts of potassium hexametaphosphate, 1 to 2 parts of antimony trioxide, 2 to 3 parts of polyacrylate, 1 to 2 parts of diethylene glycol benzoate, 1 to 2 parts of a cross-linking agent TAIC, 3 to 4 parts of petroleum sodium sulfonate, 30 to 34 parts of epoxy resin, 18 to 24 parts of organic silicon resin, 8 to 12 parts of dimethylbenzene, 5 to 7 parts of ethyl acetate and 4 to 6 parts of auxiliaries. According to the paint, muting effects are remarkably better than those of other paints, the paint also has good high-temperature-resistant and anti-rusting functions, the service life of the power distribution cabinet can be prolonged, the maintenance cost can be lowered, and high cost performance can be achieved.

The invention discloses a soilless culture nutrient solution which comprises the following components in parts by weight: 85-115 parts of wood vinegar, 25-45 parts of urea humate, 20-40 parts of potassium metaphosphate, 15-30 parts of disodium octaborate tetrahydrate, 10-25 parts of zinc sulfate, 10-20 parts of magnesium chloride and 2000-2300 parts of pure water. The wood vinegar, which is used as the formula component, is a pure natural substance which is distilled out from perennial oak by high temperature, contains K, Ca, Mg, Zn, Ge, Mn, Fe and many other minerals, contains more than 200 organic matters, including phenols, acids, alcohols, ketones and the like, also contains vitamins B1 and B2, is a system substance with complex composition, multiple functions and relatively high stability, and has the functions of plant growth promotion, disinfection, sterilization, moth and corrosion resistance and the like.

The technical scheme of the invention discloses a preparation method of optical-grade potassium metaphosphate, wherein the preparation method comprises the following steps: (1) carrying out a reactionof potassium hydroxide, phosphoric acid and water according to a certain proportion to obtain a crude potassium dihydrogen phosphate solution; (2) adjusting the concentration of the crude potassium dihydrogen phosphate solution, and enabling the crude potassium dihydrogen phosphate solution to pass through ion exchange resin at a certain flow rate to remove non-ferrous metals and impurity ions; (3) evaporating and concentrating to obtain a concentrated solution containing 30% or more of monopotassium phosphate; and (4) dehydrating the concentrated solution to obtain the optical-grade potassium metaphosphate finished product, wherein the removed moisture comprises free water and structural water. According to the technical scheme, the preparation method is high in adaptability to potassiumhydroxide serving as a raw material, the crude potassium dihydrogen phosphate reaction solution is purified by adopting an ion exchange method, high-purity potassium metaphosphate powder can be prepared in combination with a clean spray calcination mode, and various indexes meet the requirements of optical glass and laser glass raw materials.

The invention relates to a process for preparing food-grade potassium metaphosphate by virtue of arsenic removal on molten potassium dihydrogen phosphate. The process comprises the following steps: under a heating and stirring condition, reacting haloid acid with molten potassium dihydrogen phosphate so as to generate an arsonium halide substance with a low boiling point, performing subliming, directly further heating molten potassium dihydrogen phosphate subjected to arsenic removal for dehydration polymerization reaction, thereby obtaining the food-grade potassium metaphosphate. By virtue of adopting the method, the process has the beneficial effects that 1) the method is convenient in operation process, and solid-phase molten potassium dihydrogen phosphate subjected to arsenic removal is capable of facilitating preparation of the food-grade potassium metaphosphate; 2), the arsenic removal process can be connected with a subsequent potassium polymetaphosphate process, and two workshop sections are seamlessly connected, so that heating melting after cooling of the potassium dihydrogen phosphate subjected to arsenic removal can be avoided, and energy losses brought by repeated heating are reduced; 3) the process for preparing the food-grade potassium metaphosphate by virtue of melting arsenic removal on potassium dihydrogen phosphate does not need crystallization and filtration processes and is free from waste water discharge; and 4), the viscosity of the food-grade potassium metaphosphate is up to 6.5mPa.s-15mPa.s.

The invention discloses growth-promoting watermelon fertilizer, characterized by being prepared from, by weight, 13-15 parts of gypsum, 3-5 parts of sodium metasilicate, 1-2 parts of lauroyl triethanolamine, 13-17 parts of potassium metaphosphate, 18-20 parts of ammonium polyphosphate, 2-3 parts of pentaerythritol, 1-2 parts of zinc borate, 13-16 parts of fulvic acid, 16-19 parts of humic acid, 1-2 parts of cyanuric acid, 1-2 parts of sodium selenite, 0.4-0.8 part of tetraethyl orthosilicate, 3-6 parts of chlorinated paraffin, and 1-2 parts of bamboo fiber. The growth-promoting watermelon fertilizer is rich in nutrition, can be absorbed and utilized fast, can provide improved crop activity and improved metabolism, can provide increased content of beneficial functional matters, and can promote growth.

The invention provides a method for producing anti-crushing granular sodium tripolyphosphate. The method comprises the following steps: (1) a neutralization reaction: adding water into a neutralization pot for heating, adding soda ash, carrying out stirring to completely dissolve the soda ash, raising the temperature of a formed solution to 40-50 DEG C, slowly adding phosphoric acid under stirring, adjusting the K value of neutralized slurry to 2.8+/-0.1, then adding potassium metaphosphate and sodium hexametaphosphate, carrying out a reaction for 45 min and then carrying out filtering to obtain viscous slurry for subsequent usage; (2) drying and dehydration: conveying the viscous slurry obtained after neutralization to a drying tower for atomization and dehydration at 130+/-10 DEG C; and(3) polymerization: sending the dried and dehydrated raw material back to a rotary polymerization furnace for polymerization at 210+/-10 DEG C so as to obtain the anti-crushing granular sodium tripolyphosphate. The production method provided by the invention has the advantages of low raw material cost, simple process, easy industrialization and easy availability of raw materials; and the preparedgranular sodium tripolyphosphate has high anti-crushing strength and is not damaged in structure during transportation and storage.