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 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 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 .