40results about How to "Achieve dissociation" patented technology

The invention belongs to the technical field of mass spectrometry and particularly relates to a cascade mass spectrometry method performed in an ion trap mass analyzer. The cascade mass spectrometry method performed in the ion trap mass analyzer specifically comprises three stages of ion selective segregation, collision induction dissociation and mass scanning and analyzing. According to the cascade mass spectrometry method performed in the ion trap mass analyzer, in the stage of collision induction dissociation, by changing the period of a radio frequency signal, namely changing the frequency of radio-frequency voltage loaded on an ion trap, parent ions with a certain mass-to-charge ratio undergo resonance excitation so as to obtain energy. The high-energy ions which undergo resonance excitation collide with neutral molecules in the ion trap and are dissociated, outcome ions are generated, and the cascade mass spectrometry is achieved. The cascade mass spectrometry method performed in the ion trap mass analyzer has the advantages that only arrangement of software can be used for changing the scanning period of the stage of collision induction dissociation in order to achieve collision induction dissociation, and thus, an experiment device and a method of cascade mass spectrometry can be obviously simplified.

The invention discloses a method for simulating and quantifying the influence of compound erosion on water and soil loss, that is, by comprehensively utilizing artificial simulated rainfall test, wind tunnel test and freeze-thaw cycle test means, the filled test soil tank is artificially rained indoors along the track. The wind tunnel-freeze-thaw cycle physical model moves between regions, and through the joint use of various test devices, the simulation of different composite erosion modes is realized to determine the impact of water and soil loss under different composite erosion effects, and then dissociate according to the driving factors According to the scheme, the contribution rate of various driving factors such as hydraulic power, wind power, freeze-thaw, etc. to soil erosion is separated. The technical solution of the invention is practical and effective, and can not only quantify the amount of influence of water and soil loss under different dynamic coupling effects in the composite erosion system, but also separate the contribution rate of each driving factor in the composite erosion system.

The invention provides a method for co-extracting vanadium, titanium and chromium from vanadium slag. According to the method, pyroxene and fayalite wrapping spinel are selectively reduced through a method of low-temperature hydrogen reduction, iron removal by ferric trichloride and low-temperature oxalic acid leaching of the vanadium slag, the structure of the spinel is destroyed, and dissociation of a spinel phase and a silicate phase is realized, so that the spinel phase is fully exposed, the vanadium slag is directly leached at a low temperature and the spinel structure is destroyed by utilizing the acidity and strong complexing property of oxalic acid, so that vanadium, titanium and chromium are complexed with oxalate to enter a solution, and co-extraction of vanadium, titanium and chromium is realized. According to the method, vanadium, titanium and chromium are extracted from the vanadium slag, and the leaching rates are all larger than 99%.

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 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.

In a method and apparatus for detecting explosive particles in a gas flow (46), the gas flow (46) is directed over a defined period of time through an adsorption mesh (12), wherein the explosive particles (18) are adsorbed to Thereon, the adsorption net (12) is subsequently heated to a heating temperature at which the explosive particles (18) are desorbed, and the gas flow with the desorbed explosive particles is conveyed to a detector (40) for its detection , wherein a microfilter (12) with a smaller pore size than the particle size of the explosive particles (18) is used as the adsorption net. This makes it possible to collect virtually all explosive particles ( 18 ) present in the gas flow ( 46 ) and feed them to the subsequent detection, thereby increasing the sensitivity of the detection.

The invention discloses a thermomechanically recyclable cross-linked cable material and a preparation method thereof, belonging to the field of electric wires and cables. The method disclosed in the invention is to adopt a chemical grafting method, respectively adding specific amounts of methacrylic acid esters and vinyl alkanoate Small ester molecules are grafted to the molecular chain of chlorinated polyethylene, and the grafted ester functional group side chain increases the distance between the molecular chains of chlorinated polyethylene, which acts as a plasticizer and effectively reduces the processing and molding of chlorinated polyethylene. HCl removal reaction during the process; in addition, two different ester side groups form active cross-linking points. Under the action of the catalyst, cross-linking bonds can be formed in the form of transesterification during the molding process, which improves the cable The strength and durability of the material ensures the stability of the cable material; and the ester-based cross-linking bond can realize the dissociation of the ester bond under the action of a specific catalyst, thermal field and mechanical stress, thereby obtaining the recyclability of the cable material .