36results about How to "Enhanced Chelation" patented technology

The 8-hydroxy quinoline type chelated resin has 8-hydroxy quinoline fixed onto macroporous silica gel through silanizing reagent and paraformaldehyde as spacer arm and bonding amount of 120-542 umol/g. Its synthesis process includes the steps of: pre-treating macroporous silica gel; introducing spacer arm; fixing ligand and acid washing to set via drying intermediate product II, washing with alcohol and drying for several times, washing with hydrochloric acid, and washing with deionized water to neutral so as to obtain yellow chelated resin. The resin has simple synthesis process, mild reaction condition, short synthesis time, easy control, high synthesis efficiency, low cost, high rigidity and high metal ion complexing capacity, and may be used in on-line enriching analysis of trace metal, enriching recovery of noble metals, purifying industrial waste water, etc.

The invention discloses a method for selecting scheelite at normal temperature. The method comprises the following steps: (1) pulping: a raw ore is milled and classified to prepare pulp with a concentration of 30-35%; the pulp is injected in a flotation machine; and the pH of the pulp is adjusted within 7-9; (2) roughing: a water glass and sodium humate combined inhibiting agent is adopted to inhibit a calcium-contained gangue mineral; and a sodium oleate and benzohydroxamic acid combined capturing agent is added for roughing and scavenging to obtain a scheelite concentrate; (3) the concentration of the scheelite concentrate is condensed to 60%; and the water glass and sodium humate combined inhibiting agent is added for strongly stirring by above 30 m under the effect of a normal-temperature magnetic field to dilute to the mass concentration of 30%; and (4) six times of blank selection are performed for the scheelite concentrate treated in the step (3) to obtain the scheelite concentrate.

The invention discloses a preparation method of amino acid chelated selenium. The amino acid chelated selenium foliar fertilizer capable of being efficiently absorbed by crops is obtained by performing ultrafine powder treatment on a selenium raw material, a potassium raw material and a nitrogen raw material after mineral purification, performing a chelation reaction by using a compound amino acidsolution obtained through concentrating after biological fermentation and extraction of glutamic acid, adding a suspending agent, a penetrating agent and an antioxidant and carrying out emulsification treatment. The compound amino acid chelated selenium foliar fertilizer produced by the method disclosed by the invention is stable in physicochemical properties, free of ion antagonism, uniform in foliar adhesion, high in absorption and utilization rate, free of toxicity and harm to crops, capable of being directly absorbed through leaves, and relatively rapid in transformation in plants. The invention further provides an application method of the compound amino acid chelated selenium foliar fertilizer. According to scientific calculation, crops can reach a selenium enrichment level requiredby national standards, scientific selenium enrichment and index control can be achieved, safety and effectiveness are realized, and the development cost of selenium-enriched crops is reduced.

The invention belongs to the technical field of veterinary anti-parasitic medicaments, particularly relates to a compound ivermectin injection and a preparation method thereof, and aims to provide an injection for treating parasitic infection of livestock, expanding an anti-parasitic spectrum and enhancing a therapeutic effect and a preparation method thereof. Every 100ml of compound ivermectin injection comprises 0.5-2g of ivermectin, 2.5-10g of albendazole sulfoxide, 5-15ml of polyethylene glycol 400 (PEG400), 1-10ml of acetic ether, 0.5-2ml of benzyl alcohol, 0.05-0.2ml of alpha-thioglycerol, 10-30ml of dimethyl sulfoxide and the balance of propylene glycol. In the injection, the ivermectin and the albendazole sulfoxide are used as anti-parasitic main components; the injection has double complementary advantages; the anti-parasitic spectrum is expanded; the drug resistance probability of parasites can be effectively reduced; and the sensitivity of the parasites is improved. The invention brings a completely new situation for safely, effectively and conveniently preventing and treating parasitic diseases in animal husbandry and aquaculture of China.

The alkaline silicon wafer polishing fluid has pH 8-13 and grain size of 15-150 nm, and consists of abrasive 10-50 wt%, pH regulator 1-6 wt%, surfactant 0.01-0.6 wt%, and water 44-89 wt%. The alkaline silicon wafer polishing fluid possesses the advantages of no corrosion to the apparatus, easy cleaning after polishing, high silicon polishing speed, high polishing quality, high harmful metal ion chelating effect, no environmental pollution, low cost, etc.

The invention relates to a method for preparing a crop nutrient solution from low molecular weight chitosan oligosaccharide chelate ferrous ions and zinc ions. The method comprises the following steps: dissolving chitosan in an acid solution, adding a small amount of rhamnose and ammonium sulfate, performing anaerobic fermentation for 7-10 days, adding acid into supernate to adjust the pH value to 1-4, adding a ferrite solution, heating to 55-70 DEG C, keeping the temperature for 2 hours, adding a proper amount of calcium carbonate to adjust the pH value to 4-6, adding a zinc solution, heating to 65-75 DEG C, keeping the temperature for 1 hour, leaving to sand to layer the solution, and repeatedly filtering the supernate, thereby obtaining the crop nutrient solution. By adopting the crop nutrient solution, elements of iron and zinc essential for crops can be effectively supplemented, little leaves and chlorotic disorder can be prevented and relieved, the content of heavy metals in fruits and vegetables can be reduced, the quality can be improved, and the yield can be increased.

The invention discloses a lignin-based triaminotriethylamine salt waste incineration fly ash heavy metal stabilizer and a preparation method and application thereof, and belongs to the technical fieldof environmental protection technologies and municipal solid waste incineration fly ash treatment. The relative molecular weight of the stabilizer is 3000-20000, and the stabilizer is specifically lignin-based triaminotriethylamine sodium salt or lignin-based triamino triethylamine potassium salt. The method comprises the following steps: firstly, carrying out oxidative degradation on alkaline lignin, exposing a reaction site, carrying out a Mannich reaction on an oxidized aminating agent and the lignin, inoculating amido to the lignin, wherein a condensation reaction increases the molecularweight and enlarges the chelate ring, and introducing C=S double bonds through an esterifying agent to obtain the lignin-based triaminotriethylamine derivative. The method can effectively reduce the leaching concentration of heavy metals such as Pb and Cd in the fly ash, promotes the conversion of the heavy metals into a form with low biotoxicity, is low in energy consumption, high in heavy metalstabilization efficiency and good in volume reduction effect, and is suitable for industrial application of harmless treatment on municipal solid waste incineration fly ash.

The invention discloses a descaling anticrustator, which is prepared from the following components according to parts by weight: 50-70 parts of sodium carbonate, 20-25 parts of sodium pyrophosphate, 45-60 parts of tanning extracts, 15-30 parts of sodium sulfate, 8-16 parts of trisodium phosphate, 3-8 parts of sodium gluconate and 7-12 parts of starch. The descaling anticrustator has the beneficial effects that a descaling and antiscaling effect is improved, secondary scaling is avoided, and the descaling anticrustator has the advantages of environment protection, no toxicity, no taste, efficiency and energy saving.

According to an example aspect of the present invention, there is provided a method of producing reactive lignin from an alkaline lignin containing stream, such as black liquor, e.g. kraft lignin, by using thermal treatment with temperatures between 200 and 250° C. for simultaneous activation (for example by demethylation and/or demethoxylation) and precipitation of the lignin.

The invention discloses a method for preparing L-glutamic acid chelated potassium monohydrate. The method comprises the following steps of performing a reaction by using potassium carbonate or potassium hydroxide, and L-glutamic acid as raw materials, and by using water of which the temperature is 70-80 DEG C as a solvent, clarifying a solution, adjusting the pH value of reaction liquid to 7.5-8.5, continuing a reaction at 80-85 DEG C for 2-4 hours, decoloring reaction liquid, performing filtration, performing concentration to a Baume degree of 36-38 degree Be, and then performing cooling to 15-20 DEG C; and adding L-glutamic acid chelated potassium monohydrate crystals as seed crystals to concentrated liquid, maintaining the temperature to be 15-20 DEG C, performing stirring for crystallization, performing discharging, performing centrifugation so as to obtain crude products, rinsing every 100 kg of the crude products with 5-10 L of deionized water, and drying solids so as to obtain products of which the chelating degree is 95% or above. According to the method disclosed by the invention, an organic solvent is not used, so that the safety coefficient of production environment is increased, and the cost of the raw materials is substantially reduced; the products are free from solvent residues, and moisture is easy to control; and besides, investment on equipment and sites can be reduced.

The invention discloses a fertilizer synergist, and belongs to the technical field of fertilizers. The method comprises the following steps: placing a chitosan solution, a polyvinyl alcohol solution,a polyethyleneimine water solution, an ammonium chloride solution, a calcium nitrate solution, and modified sepiolite in a material mixing machine, carrying out stirring and mixing for 30-50 minutes at a rotating speed of 100-200 r/min, adding distiller's grains with a mass of 0.3-0.5 time of the mass of the chitosan solution into the material mixing machine, continuing carrying out stirring and mixing for 30-50 minutes at a rotating speed of 100-200 r/min to obtain mixed slurry, putting the mixed slurry into a high-pressure reaction kettle, injecting carbon dioxide into the high-pressure reaction kettle under high pressure by using a pump, then keeping the pressure and carrying out cooling, wherein the pressure is kept to be 10-12 MPa for 10-12 minutes at a temperature of -5 to 10 DEG C,then opening an external pipeline of the high-pressure reaction kettle, and reducing pressure slowly to obtain the fertilizer synergist. The fertilizer synergist provided by the invention is beneficial to plant growth.

The invention relates to the technical field of material processing, and aims to solve the problem of low chelation degree of chitosan mentioned in the prior art. The invention provides an organic-inorganic composite trace element and a preparation method thereof, the organic-inorganic composite trace element comprises a ligand and a trace element, and the ligand and the trace element are chelated to obtain the organic composite trace element; the ligand is a resistant starch-chitosan graft. The preparation method comprises the following steps: grafting resistant starch and chitosan to obtain a graft; the chelating degree of ligands and trace elements is improved; the resistant starch is difficult to be directly digested and utilized by hosts and can promote growth of intestinal probiotics and absorption of mineral substances; by forming the graft, the chelating degree of the chitosan is improved, and meanwhile, the physiological function regulation and control of animal organisms are also facilitated.

The invention relates to the technical field of chemical synthesis and in particular relates to nano small peptide chelated iron for a feed additive and a preparation method of the nano small peptidechelated iron. Aiming at the problems that inorganic iron mixed with feed directly is not beneficial to absorption of an iron element by pigs and the environment can be polluted, the invention has thetechnical scheme that the preparation method comprises the following steps: [1] dissolving soybean bran powder, namely dissolving soybean bran powder into a buffer solution of which the pH value is 2.2-8.0 so as to obtain a soybean bran powder solution; [2] preparing dried peptide powder, namely carrying out thermal treatment on the soybean bran powder solution obtained in the step [1], adding alkaline protease and flavourzyme, heating to carry out enzymolysis, carrying out boiling water bath enzyme deactivation, carrying out centrifugal filtration so as to obtain enzymatic hydrolysate, and drying so as to obtain dried peptide powder; [3] preparing nano small peptide chelated iron, namely dissolving the dried peptide powder obtained in the step [2] so as to obtain a small peptide solution, adding an inorganic ferrous solution under a heating stirring condition to enable small peptide and iron to react to form chelate, separating, and drying, thereby obtaining the nano small peptide chelated iron. The nano small peptide chelated iron is applicable to pig feed.

The invention discloses a preparation method of a high-efficiency acidic soil improving agent. The preparation method comprises the following steps: (1) adding silica gel solid particles into activateliquid to obtain activated silica gel; (2) adding deionized water after mixing the activated silica gel with polyethylenimine, heating and performing insulation treatment on the mixture, filtering toobtain filter residue, and washing and drying the filter residue with water to obtain modified silica gel; (3) uniformly mixing the modified silica gel, bamboo charcoal powder, zeolite and cinnamon skin to produce the high-efficiency acidic soil improving agent. The acidic soil improving agent prepared by the invention can effectively neutralize acidic hydrogen ions in soil, can effectively adsorb heavy metal ions in the soil, has strong adsorption capacity, does not cause heavy metal ions to re-precipitate, can be applied with a fertilizer simultaneously, and can improve the sustained release effect of the fertilizer to a certain extent, and further improve the effect of fertilization.

The present disclosure provides an integrated circuit with an interconnect structure and a method for forming the integrated circuit. In one embodiment, a method of the present disclosure includes receiving a workpiece that includes a first recess in a dielectric layer over the workpiece, depositing a contact fill in the first recess and over the dielectric layer to form a contact feature, planarizing a top surface of the workpiece to remove the contact fill over the dielectric layer, depositing an interlayer dielectric layer over the planarized top surface of the workpiece, forming a second recess in the interlayer dielectric layer to expose the contact fill in the dielectric layer, recessing the contact fill by soaking the workpiece in a room temperature ionic liquid, and depositing a conductive layer over the recessed contact fill. The material forming the contact fill is soluble in the room temperature ionic liquid.

The invention discloses a detergent assistant with fumaric acid serving as a main synthesis raw material and a preparation method of the detergent assistant. According to the method, fumaric acid is used for replacing maleic anhydride used in the conventional synthesized detergent assistant; in the polymerization reaction of fumaric acid and crylic acid, hydrolysis is not required, so that the reaction time is shortened, and the energy consumption is reduced. Meanwhile, in the preparation method, water is used as a solvent instead of a toxic and harmful solvent; after being distilled, the water is not recycled, and no solvent is retained in the product; the production process is simplified, the energy consumption is low, and the equipment utilization rate is high; the preparation method is suitable for large-scale production.