40results about How to "Achieve dissociation" patented technology

The invention belongs to the technical field of mineral engineering and provides a mineral processing technology for recycling fluorite from baotite, magnetite and tailing. In the tailing, mineral particle size of the fluorite is thin, iron-bearing mineral, rare-earth mineral, gangue mineral and the fluorite mineral are closely symbiotic and floatability of minerals such as rear earth, barite, apatite, calcite and dolomite is close to the fluorite mineral, so that separation of the fluorite mineral is difficult. According to the mineral processing technology for recycling the fluorite from the baotite, the magnetite and the tailing, priority desulfuration, rear earth flotation, ore grinding, iron selection through magnetic separation, fluorite selection through direct flotation and a reverse flotation sorting technology are performed on the magnetite and the tailing to enable pyrite, the rare earth, the iron-bearing mineral and the fluorite to be picked out in sections, efficient, high selective, easy-to-operate inhibitor and collecting agent combination is utilized in sorting of fluorite which is mostly performed monomer separation, so that fine fluorite of high grade and high recovery rate is obtained, a purpose of synthetically recycling valuable minerals is achieved, and effective separation of the fluorite mineral and the gangue mineral is achieved.

The invention belongs to the field of biological medicines, and relates to application of nanoparticles, in particular to application of the nanoparticles as tumor microenvironment responsive drugs orimaging agents. The nanoparticle comprises a chelate shell formed by tannic acid and ferric ions, and chemotherapeutic drugs are entrapped in the chelate shell. In a tumor microenvironment, the nanoparticle can slowly release a chemotherapeutic drug entrapped in the nanoparticle and slowly release iron ions in the nanoparticle to enhance the nuclear magnetic resonance imaging effect. The technical scheme can be applied to medical practice of tumor imaging and tumor treatment.

The invention discloses an information safety destruction and recycling method of a semiconductor storage medium. The method comprises the following steps of: (1) performing one-stage crushing on the semiconductor storage medium to be destructed; (2) separating a ferro-magnetic material by a magnetic separator; (3) performing multi-stage crushing by a multi-stage crusher; (4) removing nonmetal particles with the particle size less than 0.05mm to 0.5mm from the material by a multi-stage air separation system; and (5) screening the material through a vibrating screen. According to the method, the information of the semiconductor storage medium can be safely destructed and recycled. The method has the characteristics of good destruction effect, high degree of automation, high applicability and the like.

The invention belongs to the technical field of mass spectrometry analysis and particularly relates to a method for analyzing tandem mass spectrometry driven by direct current voltage in an ion trap mass analyzer. The method specifically comprises the three stages of ion selection isolation, collision induction dissociation and mass analysis, wherein in the stage of collision induction dissociation, bias direct current voltage is generated in the center of an ion trap by exerting asymmetric waveform radio frequency working voltage on electrodes of the ion trap mass analyzer; by means of the bias direct current voltage, isolated parent ions with the certain mass-to-charge ratio are made to deviate from the constraint center of the ion trap to obtain energy so as to be excited, ions excited to a high-energy state can collide with neutral molecules in the ion trap and are dissociated, and thus tandem mass spectrometry analysis is achieved. The method for analyzing the tandem mass spectrometry driven by the direct current voltage in the ion trap mass analyzer has the advantages that an additional direct current main is not needed, the bias direct current voltage can be achieved only through control of software, time-sequence control is achieved, and an experimental device and method can be obviously simplified.

The invention relates to a hindered bed separator. The separator comprises a separator bed body (16), a feeding well (1) arranged at one side of the upper part of the separator bed body, an underflow collecting cone (11) at the bottom of the separator lathe bed, a clean coal overflow collecting tank (5) arranged at the upper part of the separator bed body and a control system, and is characterized in that a supersonic generator (2) is arranged below a feeding port of the feeding well (1); a plurality of inclined pipes (4) are arranged at the upper part of an inner cavity of the separator bed body in the equispaced manner, the lower pipe orifices of the inclined pipes are communicated with the inner cavity of the separator bed body, and the upper pipe orifices are communicated with the clean coal overflow collecting tank (5); a pipenet current distributor is paved in the cavity of the joint part of the separator bed body (16) and the underflow collecting cone (11); and a pulsating device is arranged on one side wall of the separator bed body for generating pulsating current.

The invention discloses a method for extracting beta-glucan from Sparassis crispa. The method realizes pretreatment of the Sparassis crispa abd effective destroy of cells through physical grinding andaddition of a wall-breaking enzyme in order to dissolves out contents, so the extraction rate of the glucan is increased; high-pressure microwave treatment makes separation of glucan and cell tissuesfurther realized in order to achieve dissociation, so finally the glucan is obtained by extraction; and starch, proteins and other polysaccharides can be effectively removed by adding an impurity removal enzyme and ammonium sulfate, so that the purity of glucan is greatly improved.

The invention discloses a method for separating EVA and a battery piece in a solar module. The method comprises the steps of 1) removing an aluminum frame of the solar module through a frame removingmachine; 2) heating the frameless assembly, and manually tearing off a TPT back plate; (3) conducting EVA scratching treatment; 4) carrying out embrittlement of EVA; 5) stripping the EVA and ultra-white glass; 6) stripping the EVA and the battery piece; and 7) detecting and classifying the battery pieces, re-detecting the taken-out battery pieces, re-packaging the qualified battery pieces into anassembly, and extracting metals such as silver and aluminum from the battery pieces with unqualified electrical properties or damaged battery pieces by utilizing a wet metal dissolving and extractingprocess to obtain a high-purity silicon wafer. The invention innovatively provides a method for embrittlement of EVA at a low temperature, EVA is dissociated from the battery piece by utilizing the embrittlement and cracking properties of EVA at a low temperature (glass state temperature) or below, and the complete and lossless battery piece is finally stripped through mechanical force in a low-temperature state.

The invention discloses a method for determining the content of large flaky graphite in a flaky graphite ore. The method comprises the following steps: crushing the ore without destroying graphite flakes through using heat cracking fragmentation to realize dissociation of graphite and gangue mineral, and dissolving the gangue mineral in a mixed acid. Finally obtained graphite has high purity, and basically keeps the original occurrence granularity of the raw ore. The method can be used for determining the content and the granularity distribution of the large graphite flakes, and can accurately reflect the granularity characteristic of graphite in the graphite raw ore, and a determination result is helpful for accurately assessing the values of the graphite ore.

The invention discloses a multi-process efficient synergistic retired lithium ion battery positive electrode material recovery method, and belongs to the field of retired lithium ion battery recovery.Firstly, a positive plate of a retired lithium ion battery is disassembled; residual electrolyte in the positive plate is removed through heat treatment; then organic matters in the retired lithium ion battery electrode material are removed through pyrolysis, finally, efficient dissociation between the retired lithium ion battery electrode material and a current collector and between electrode material particles is realized through hydraulic crushing, and separation of a fine-grained electrode material and a coarse-grained current collector can be realized through screening; thermal reductionof high-valence transition metal ions in the positive electrode material is synchronously realized through regulation and control of pyrolysis parameters, and leaching of the water-soluble lithium salt is synchronously realized in the hydraulic crushing process. According to the method, multi-process synergistic coupling of organic matter removal in the electrode material, efficient dissociationof the electrode material and thermal reduction of the high-valence transition metal is realized, and the resource path of the retired lithium ion battery is shortened.

The invention discloses a method for recovering manganese from cobalt and manganese polymetallic oxidized ore and belongs to the field of comprehensive utilization of cobalt and manganese polymetallic ore. Cobalt and manganese polymetallic oxidized ore undergoes wet reduction pretreatment in an ammonia solution by using a reducing agent; and manganese mineral and impurity minerals undergo chemical dissociation and activation, and then high intensity magnetic separation and flotation separation are carried out to recover manganese so as to obtain manganese concentrate. According to the invention, manganese is recovered from cobalt and manganese polymetallic oxidized ore by chemical activation and physical concentration. The technological process is simple, and cost is low.

The invention discloses a vacuum pyrolysis treatment and recovery method for retired fan blades, which comprises the following steps: (1) blade pretreatment: crushing the retired fan blades, adding a pyrolysis catalyst, and uniformly mixing; then, the combustion flue gas subjected to high-temperature treatment is introduced for preheating treatment; (2) vacuum pyrolysis: carrying out catalytic pyrolysis treatment on the pre-treated retired fan blade in a vacuum negative pressure state to obtain pyrolysis gas, pyrolysis oil and pyrolysis residues; (3) carrying out eddy current separation on the pyrolysis residues to obtain metal, and carrying out wind separation to obtain pyrolytic carbon, a fiber material and pyrolysis residues; (4) cooling and denitrifying the combustion flue gas generated in the step (1); and (5) removing dust and bromine from the cooled and denitrified combustion flue gas. According to the method, the retired fan blade can be efficiently treated, and resources such as fiber materials and metal in the retired fan blade can be recycled.

The invention discloses a preparation method of a composite mineral microsphere-based phase change heat storage material. The preparation method comprises the steps of (1) carrying out acid activation on attapulgite to obtain acid-activated attapulgite; (2) mixing the acid-activated attapulgite with sodium hexametaphosphate and water to obtain an attapulgite suspension; mixing cellulose nanocrystals with sodium hexametaphosphate and water to obtain a cellulose nanocrystal solution, mixing the attapulgite suspension with a cellulose nanocrystal solution, and performing spray drying to obtain attapulgite/cellulose nanocrystal composite microspheres; (3) calcining to obtain composite mineral microspheres; and (4) carrying out vacuum impregnation on the composite mineral microspheres and a phase change material to obtain the composite mineral microsphere-based phase change heat storage material. According to the invention, the cellulose nanocrystals are introduced, spray drying and calcination are adopted to prepare the composite mineral microspheres with the hollow porous sphere-like three-dimensional structure, and the structure and the rough surface of the composite mineral microspheres provide richer adsorption sites for the phase change material, so that the heat storage performance of the phase change heat storage material is improved.

The invention belongs to the technical field of targeted drug delivery, and relates to a multifunctional high molecular micelle drug delivering system and a preparation method and application thereof.Some side chains of a polyethylene glycol-polylysine block copolymer are chemically modified by dimethyl 3,3'-dithiobispropionimidate dihydrochloride to obtain thiol-containing groups, and then a thiol-containing boron neutron capturing therapeutic drug disodium thiol dodecaborane reacts with the side chains through disulfide bonds to form stable multifunctional high molecular micelles in a watersolution through self-assembly and the crosslinkinging action of some free disulfide bonds; the prepared high molecular micelles can deliver the thiol-containing drug disodium thiol dodecaborane or other thiol-containing drugs or prodrugs, so that the content of the drug delivered to tumor cells is increased and a targeted therapeutic effect on tumors is enhanced.

The invention belongs to the technical field of chicken food. The chicken breast quality improver provided by the invention comprises a first improvement component and a second improvement component, the first improvement component comprises sodium carbonate, sodium citrate, sodium pyrophosphate, sodium tripolyphosphate and table salt; and the second improvement component comprises gluconic acid-delta-lactone and embedded fumaric acid. The sodium carbonate, the sodium citrate, the sodium pyrophosphate, the sodium tripolyphosphate, the table salt, the gluconic acid-delta-lactone and the embedded fumaric acid are comprehensively used, so that the meat quality improvement effect of each component is outstanding, the water retention and weight gain rate and the product yield of the chicken breast meat product are increased, the dissolution rate of salt-soluble protein in the chicken breast meat processing process is increased, and the quality of the chicken breast meat is improved. The bitterness of alkali is removed, and the characteristic flavor of the product is maintained.

The invention relates to the technical field of coal gangue application, and discloses a direct combustion activation process for coal gangue, and a geopolymer preparation process. The direct combustion activation process for coal gangue comprises the following steps: 1, raw material preparation and pretreatment: crushing the coal gangue into coal gangue particles; 2, middle-stage treatment: subjecting the coal gangue particles and fuel to mixing and combustion, and introducing high-pressure air to blow up the coal gangue particles; 3, cooling treatment: rapidly cooling a coal gangue material treated in the step 2; and 4, secondary grinding: grinding the coal gangue material obtained in the step 3. The invention has the beneficial effects that the coal gangue is activated through a specific process and then is used for preparing a geopolymer, and the geopolymer is applied to building materials, high-strength materials, solid core and solid waste materials, sealing materials and high-temperature-resistant materials. Through a technical route and principles different from technical routes and principles in the prior art, the coal gangue is utilized to the maximum extent, a large amount of coal gangue is consumed, and remarkable economic benefits and social benefits are achieved.

The invention discloses a method for simulating and quantifying the influence of a composite erosion effect on water and soil loss. That is to say, means like an artificial simulated rainfall test, awind tunnel test and a freeze-thaw cycle test are comprehensively utilized. The filled test soil tank along the track are moved among the regions of the indoor artificial rainfall-wind tunnel-freeze thawing cycle solid model; through combined application of multiple test devices, simulation of different composite erosion modes is achieved, the water and soil loss influence quantity under differentcomposite erosion effects is determined, and the contribution rate of each driving factor such as hydraulic power, wind power and freeze thawing on the water and soil loss influence is separated according to a driving factor dissociation scheme. According to the technical scheme, the method is practical and effective, the water and soil loss influence quantity under different dynamic coupling effects in the composite erosion system can be quantified, and the contribution rate of each driving factor in the composite erosion system can be separated.

The invention discloses a preparation method of transparent milk. The preparation method of the transparent milk comprises the following steps of dissolving skimmed milk powder in deionized water; adjusting pH value of the solution to 10-12 by using an alkali solution; and then, carrying out stirring, and adjusting the pH of the solution back to neutral by using an acid solution so as to obtain the transparent milk On the basis of causing no damage to the primary structure of the milk proteins, the hydrophobic effects and the ionic effects inducing inter-protein linkages are weakened by the preparation method of the transparent milk so that the effect of protein depolymerization is achieved; and thus, particle size of the milk proteins is greatly reduced. Finally, turbidity of the transparent milk is reduced by 95% or above, and a clear protein solution with transparent/semi-transparent property is formed; moreover, the transparent milk has significantly improved storage stability, andthus, commercialized application potential of transparent milk product solutions is further improved.

The invention belongs to the technical field of mineral engineering, and aims to provide a mineral separation process for recycling iron and rare earth in baotite oxidized ore flotation tailings. At present, useful minerals cannot be recycled due to the fact that mineral separation difficulty of oxidized ore flotation tailings in a BaoTou steel concentrating mill is large. Three sections of ore grinding and three sections of magnetic separation are adopted, and iron ore concentrate which has the iron grade larger than 64% and the recycling rate larger than 56% is obtained from the oxidized ore flotation tailings containing 26%-33% of iron. Then total tailings in an iron recycling process serve as rare earth flotation materials, sodium polyphosphate serves as pulp dispersing agents, 2-hydroxy3-naphthyl mevalonic acid or salicylhydroxami acid and alkyl hydroximic acid in a mass ratio of 6-8:1 serve as rare earth collecting agents, water glass serves as efficient flotation combination reagents of pH regulators and inhibitor, the dispersing state of pulp micro-fine particle minerals is well controlled, the rare earth separation process with once coarse separation and three-time fine separation is adopted, and rare earth ore concentrate which has the grade larger than 58% and the recovery rate larger than 64% is obtained from feed with the 7-9% rare earth grade.

The invention discloses a thermo-mechanically-recoverable crosslinked cable material and a preparation method thereof, and belongs to the field of wires and cables. The molecular chain of chlorinatedpolyethylene is grafted with specific amounts of methacrylate and vinyl alkanoate small molecules through adopting a chemical grafting process, and the side chain of the grafting ester functional group is used to increase the spacing of the molecular chain of the chlorinated polyethylene in order to achieve plasticization, so the HCl removal reaction in the processing forming process of the chlorinated polyethylene is effectively reduced; two different ester side groups form an active crosslinking point, and crosslinking bonds are formed in an ester exchange form under the action of a catalystin the molding process, so the strength and the durability of the cable material are improved, and the stability of the cable material is ensured; and the ester group crosslinking bonds can achieve the dissociation of ester bonds under the action of a special catalyst, a thermal field and mechanical stress in order to obtain the recyclability of the cable material.