1199results about How to "The pre-processing process is simple" patented technology

The invention discloses a method for comprehensively recycling valuable metals from a spent lithium ion battery. The method comprises the following steps: carrying out electric discharge treatment on a spent battery, crushing, pre-roasting at 300-400 DEG C, adding a reducing agent, and carrying out reduction roasting at 450-700 DEG C; carrying out water extraction and evaporative crystallization on fine aggregates obtained through the reduction roasting, so as to obtain a high-purity lithium product, leaching copper, nickel and cobalt from leached slag and roasted lump materials by virtue of ammonia oxide, carrying out magnetic separation and sieving on ammonia leaching slag so as to obtain iron and aluminum enriched products, and carrying out reduction acid leaching, purification and edulcoration on sieved products, so as to obtain a high-purity manganese sulfate solution; and carrying out extraction and selective reverse extraction on ammonia leaching liquid, so as to obtain a high-purity nickel sulfate solution and a high-purity copper sulfate solution, and carrying out vulcanization cobalt precipitation, oxidation acid leaching and extraction purification on raffinate, so as to obtain a high-purity cobalt sulfate solution. The method is high in extraction rate of valuable metals and applicable to the treatment of multiple waste lithium ion battery raw materials and efficient utilization of multiple elements, and sorting is not required.

The invention relates to a centrifugal micro-fluidic chip for detecting pesticide residue and a preparation method thereof. The centrifugal micro-fluidic chip for detecting the pesticide residue is a disk type chip with a micro structure and a micro channel and consists of multiple layers of chips; the mixing, extracting, reacting, separating and developing process of a sample to be measured and a reagent is realized under the drive of a centrifugal force generated by rotating a centrifugal machine; and finally, the content of the pesticide residue in the sample is quantitatively detected by using an ultraviolet visible light spectrophotometer. The centrifugal micro-fluidic chip for detecting the pesticide residue can be used for directly sampling without pretreating the sample; the consumption of the sample and the reagent is low; a plurality of samples can be simultaneously treated and detected in parallel, and thus the integration, the micromation and the automation of the pesticide residue detection are realized; and the centrifugal micro-fluidic chip has the characteristics of economy, quickness and portability and provides a brand-new analysis technology for quickly detecting the pesticide residue of water bodies, foods and soil.

The present invention relates to a vacuum mechanical double-stirring casting method for preparing granule reinforced aluminium base composite material. Said method includes the following steps: melting and purifying aluminium material, cooling and deslagging; under the condition of vacuum reverse slowly internal stirring to implement degassing process, adding the pretreated reinforcing granules onto the deslagged aluminium liquid surface, internal and external forward simultaneously stirring, mixing the reinforcing granules into the melt, stoping external stirring, under the condition of retaining stable liquid surface high-speed internal stirring so as to make the reinforcing granules be uniformly distributed in the liquid, heating, internal and external reverse double stirring and slowly rotating to implement degassing; adding alternant and fining agent, internal stirring slowly rotating so as to make them be mixed into melt and uniformly distributed, removing vacuum, tapping and casting to obtain ingot casting.

The invention provides a method for detecting trace elements in human body whole blood through an inductively coupled plasma mass spectrometry method and belongs to the technical field of biotechnical detection. The method comprises the following steps: (1) pre-treating a whole blood sample; (2) detecting a mixed element standard solution and a to-be-detected sample solution by an inductively coupled plasma mass spectrometer; and (3) performing quantitative analysis on a detection result and calculating the content of to-be-detected elements in the human body whole blood sample. The method provided by the invention can be used for simultaneously detecting the content of trace elements, such as magnesium, manganese, calcium, iron, copper, zinc and lead, in the human body whole blood; the sample dosage is less; the pretreatment is simple; the cost is low; the whole detection process is short in time and high in efficiency; the detection sensitivity and precision andthe detection stability are high.

A method and an apparatus are provided for mounting and removing electronic components using solder bumps while constraining thermal stresses to a substrate. The method and apparatus for mounting and removing an electronic component (bear chip 32) to be soldered onto the substrate with solder bumps 114 is configured to move the electronic component to detect contact of the solder bumps with the substrate or contact of a tool (chuck unit 38) with the electronic component, to define the contact as an original point for raising a heating temperature of the electronic component and the substrate from the heating temperature to a maximum heating temperature HTm as well as move the electronic component in conformity with the temperature rising, and to move the electronic component from a position where the maximum heating temperature is achieved to a mounting height of the substrate.

The invention relates to a method for measuring tobacco-specific nitrosamines (TSNAs for short) by using a super efficient liquid chromatogram-tandem mass spectrum combined method, and belongs to a method for detecting TSNAs. The method comprises the following steps of: adding internal standard-containing aqueous solution of ammonium acetate into a filter sheet after trapping smoke and cigarette filters smoked completely under standard conditions or tobacco shreds, performing ultrasonic extraction, transferring 1 to 2mL of extract into a small solid-phase extraction column taking N-vinyl pyrrolidone-benzene sulfonic acid copolymer as filler, flushing the small column by using aqueous solution of methanoic acid and methanol, finally eluting the small column by using solution of aqueous ammonia and methanol solution, analyzing the eluant by using an ultra performance liquid chromatography-mass spectrometer / mass spectrometer (UPLC-MS / MS), and quantifying according to the area ratio of a component peak to an isotope internal standard peak. The detecting method can be used for detecting the TSNAs in cured and hybrid cigarette mainstream smoke, cigarette side-stream smoke, filter tip intercepting smoke and tobacco shreds, and has the advantages of simple pretreatment, accurate quantification, high instrument analysis speed, low detection limit, high sample treatment flux and the like.

The invention discloses a heat-pipe low-temperature multi-effect sea water desalinating system which comprises a plurality of groups of heat-pipe multi-effect evaporators, a steam injector TVC (Thermal Vapor Compressor), a cooler, an air water release device, a steam-water separator, a water ring vacuum pump, a sea water pump, a fresh water pump, a turbine intermediate pressure cylinder and a turbine low pressure cylinder. The invention also discloses a process flow of the heat-pipe low-temperature multi-effect sea water desalinating system, comprising the steps of: extracting steam through the turbine intermediate pressure cylinder, ejecting circulation steam in the cooler and exhaust steam of the turbine low pressure cylinder through the steam injector TVC to ensure that the circulation steam and the exhaust steam of the turbine low pressure cylinder are changed into higher-quality steam to enter the heat-pipe evaporators, condensing and releasing heat of the steam at a heat absorption end through a heat pipe, transferring the heat to heating and atomized sea water at the other end; heating next-stage sea water through taking the heated and vaporized sea water as the heat source of the next multi-effect evaporator while cooling the heated and vaporized sea water to generate fresh water; heating the sea water which cools the last-stage steam entering the cooler and exhausting the generated non-condensable gas through the air water release device; pumping the non-condensable gas of the multi-effect evaporators through the water ring vacuum pump to ensure that the system runs in a negative-pressure state; and discharging concentrated water out of the system through a pipeline and pumping the fresh water to a fresh water tank through a permeated water pump.

The invention provides a technique for producing biogas by utilizing stalk dry fermentation which includes the steps: I, cracking the stalks into 2 to 8mm by a cracking machine; II, transmitting the cracked stalks into a pre-treatment pool, adding hot water of 40 to 53 DEG C and a stalk fermentation agent in the pre-treatment pool to carry out pre-treatment; the cracked stalks and the biogas slurry refluxed by the anaerobic digester of the pre-treatment pool are mixed according to a proportion of 2 to 1; after stirring, the solid content rate of the stalk liquid is 20 to 35 percent; III, using a mud pump to equally transmit the stalk liquid to the top part of the anaerobic digester with a fermentation temperature of 40 to 53 DEG C; IV, the biogas generated by fermentation is purified to be clean fuel by gas-liquid separation. The technique can lead the stalks of 1.5kg to generate the biogas of 1m<3> (the content of methane is larger or equal to 55 percent); the degrading rate is more than 90 percent. The technique of the invention can continuously feed and discharge; the biogas slurry can be repeatedly used; only biogas slag is discharged; the biogas slag is manufactured into organic fertilizer by processing and can not cause any pollution to the environment.

The invention relates to the field of image character recognition, and particularly relates to an image character sequence recognition system based on a recurrent neural network; the system comprises an image character input module, a convolutional neural network and a recurrent neural network classifier; the convolutional neural network extracts characteristics of a to-be-recognized character sequence input by the image character input module, and inputs to the recurrent neural network classifier; and the recurrent neural network classifier, according to sample characteristic data and output of the last moment, realizes continuous recognition of the character sequence. According to the system disclosed by the invention, the shortage that picture segmentation is carried out before OCR recognition is overcome, the earlier stage processing of the image character recognition is simplified, and a language model does not need to be constructed additionally to carry out optimization processing on a recognition result; while the recognition accuracy rate of character and word sequences is improved better, the processing efficiency of the character recognition is obviously improved; and the system has wide application prospect in the field of image character recognition.

A multilayer composite die-stamping building template and a preparation method thereof belong to the environment friendly material field. The prior composite template has high preparation cost, fire hidden danger and poor mechanical property. The composite template has a five-layer structure, wherein the middle layer is a support layer 3; the upper side and the lower side of the support layer 3 are respectively provided with reinforcing layers 2; both reinforcing layers 2 are respectively provided with an antiflaming layer 1 at one side; the thickness of the antiflaming layer 1 is 0.8 to 1.2 mm, while that of each reinforcing layer 2 is 1.0 to 1.5 mm and that of the support layer 3 is 8 to 20 mm. Through laying each layer of material in turn inside a mould, the mould is entangled in a hot press to complete hot pressing and the multilayer composite die-stamping building template is obtained through cold pressing shaping; moreover, hot pressing temperature is 150 to 280 DEG C and hot pressing pressure is 2.5 MPa to 4.0MPa, while cold pressing pressure is 8.0 to10 MPa and time is 20 to 40 min. The multilayer composite die-stamping building template has the advantages of simple process, low cost, excellent mechanical property of a composite template and no fire hidden risk, etc.

The invention discloses a convolutional neural network method based on a parallel multi-scale time convolution kernel, and mainly solves the problems of low detection accuracy and difficulty in effectively detecting imaginary movement of a user in the prior art. According to the implementation scheme, the method comprises the following steps: collecting imaginary motion electroencephalogram data,preprocessing the imaginary motion electroencephalogram data, and making a data set by using the preprocessed electroencephalogram data; constructing a convolutional neural network, training the convolutional neural network by using the training set and the verification set, testing the convolutional neural network by using the test set, and performing fine tuning on the tested convolutional neural network by using the electroencephalogram data of the testee to obtain a final convolutional neural network suitable for the testee to perform an online experiment; and obtaining an online imagination motion electroencephalogram signal of the testee in real time, and sending the online imagination motion electroencephalogram signal to the final convolutional neural network to obtain a real-timeclassification result. The method can effectively detect the imaginary movement of the user, improves the classification accuracy of the imaginary movement electroencephalogram signals, can be used for medical service, and serves as an auxiliary tool to participate in rehabilitation treatment of stroke patients.

The invention relates to a method for extracting rare earth and aluminum from ion adsorption type rare earth ores. The method includes the steps that (1), ore leaching is performed, wherein an ore leaching agent is added for in-situ ore leaching or pond leaching, and rare earth ore leaching liquid with the rare earth concentration higher than 0.02% is obtained; (2), precipitation is performed, wherein solid and liquid separation is performed after a precipitation agent is added into the rare earth ore leaching liquid for precipitation, and precipitated filter liquor and mixed precipitate containing rare earth and aluminum are obtained; (3), calcination is performed, wherein the mixed precipitate containing rare earth and aluminum is calcinated, and calcinated products containing rare earth oxide and alpha-aluminum oxide are obtained; and (4), leaching out is performed, wherein solid and liquid separation is performed after a chlorination leaching agent is added into the calcinated products containing rare earth oxide and alpha-aluminum oxide for leaching out, chlorinated rare earth leaching-out liquid and filter residues containing alpha-aluminum oxide are obtained, rare earth oxide is extracted from the chlorinated rare earth leaching-out liquid, and aluminum oxide fine products are extracted from the filter residues containing alpha-aluminum oxide. The method is simple in technology, precipitation is directly performed without impurity removal, and by means of the dissolution property difference of the calcinated products in an acid environment, the rare earth and the aluminum can be separated and recycled.

The invention provides a crude oil mass fracture maturity evaluation method. The method comprises the following steps: weighing a quantitative crude oil sample and mixing the weighed crude oil sample with methylene dichloride, adding a mixed master standard taking the methylene dichloride as a solvent after standing by for 10-24h, detecting the relative contents of full-mass fractures in the sample such as light dydrocarbon series, adamantane, normal alkane / isoalkane, terpenoid biomarkers, polycyclic aromatic hydrocarbon and homolog, thiophene and aromatic steroid hydrocarbons, indistinguishable compounds UCM and the like by virtue of full-two-dimensional gas chromatography-flame ionization detector (FID), and establishing a comprehensive evaluation method for crude oil mass fracture maturity on the basis of the principle that the relative contents of different types of molecular components in crude oil reflect different maturity evolution stages. The method, by virtue of the full-two-dimensional gas chromatography, can achieve simultaneous quantitative analysis on crude oil full-mass fracture content, and the method can be used for evaluating the crude oil maturity by virtue of crude oil mass fracture, so as to guarantee the accuracy and the contrasting property of the crude oil maturity evaluation.

The invention provides a collagen and a collagen polypeptide, wherein, the weight percentage of hydroxylysine is more than 1.3 percent. The invention also provides the preparation technology and the application of the collagen and the collagen polypeptide. The invention can make full use of inexpensive raw materials including the fish skin and fish scale of tilapias to produce products with high added value. The collagen polypeptide is used for treating arthritis with a definite drug effect, and the clinical dose is considerably less than other collagen polypeptides. The collagen polypeptide can solve the pollution problem of fish skin wastes, and at the same time avoid the risk of infectious diseases which can be caused by the collagen of land animals. The collagen and the collagen polypeptide have the advantages of considerable economic benefits, energy conservation and environmental protection, simple process equipment, low cost and easy industrialization.

The invention provides a method for detecting 31 common blood pressure-lowering and blood sugar-lowering drugs in blood by an ultra high performance liquid-mass spectrometry, and is characterized in that the method comprises the following steps: (1) confirmation of detected target compounds; (2) sample processing: processing a sample by an organic solvent protein-deposition method; (3) primary screening detection: carrying out primary screening detection by a multiple reaction monitoring (MRM) mode of the ultra high performance liquid chromatography-tandem mass spectrometry (UPLC-MS / MS) in different periods of time; (4) reexamining of the sample which is positive by the primary screening detection in the step (3): after treating and concentrating the sample which is positive by the screening detection, carrying out UPLC-MS / MS detection; and optionally, (5) reexamining of the sample which is positive by the reexamining detection in the step (4): reexamining by a high performance liquid chromatography-high resolution time-of-flight tandem mass spectrometry (HPLC-QTOF). According to a fact that the drugs have different retention time in the set detection conditions, a method for sectional detection is creatively completed. The required time for totally completing the detection of 31 drugs can be within 11 minutes.

The invention belongs to the novel material and novel energy technical field and relates to a method for preparing a carbonaceous solid acid catalyst and biodiesel, in particular to a method for preparing the carbonaceous solid acid catalyst and the biodiesel by directly sulfonating pure natural biomass. The method is characterized in that: pure natural and renewable biomass is used as a raw material, concentrated sulfuric acid is directly used to sulfonate the biomass into biomass-based carbonaceous solid acid catalyst, and a continuous rectification-water separation esterification reaction process is adopted to perform the catalytic esterification reaction between free fatty acid or waste grease and short chain alcohol to produce the biodiesel. The raw material adopted by the method has rich resource and low cost, is purely natural and renewable, and belongs to the waste utilization; the method has simple preparation technology, mild and controllable reaction conditions, and low manufacturing cost; the catalyst has high activity, good stability, easy recovery and no corrosion to equipment, belongs to an environment-friendly catalyst, is suitable for mass industrialized introduction of the biodiesel, and can also be used for organic reactions such as alkylation, hydrolyzation, hydration and so on.

The invention belongs to the technical field of polymer solar cells and particularly relates to a reciprocal form electrode polymer solar cell using TiO2 as an electronic transmission layer, CuPc as a cavity transmission layer and a preparation method thereof. The method includes the steps of: using sol-gel technology to grow a layer of uniform and compact nanocrystal titanium dioxide (TiO2) film on an ITO glass substrate, then spin-coating a layer of P3HT:PCBM solution dissolved by dichlorobenzene, after annealing, using thermal evaporation to grow a layer of CuPc with certain thickness and finally evaporating Au electrode. The polymer solar cell prepared by utilizing the method solves two problems of the traditional polymer solar cell, namely that the mixed solution of 3, 4-EDOT and polystyrolsulfon acid corrode the surface of ITO glass, and the excessive thinness of cathode buffer layer LiF causes the operating process to be difficult to be controlled accurately.

The invention relates to a method for detecting oligosaccharides in breast milk. The method includes a step of breast milk sample pretreatment, namely taking a breast milk sample, centrifugally removing upper fat, taking lower liquid, adding alcohol solvent, freezing for 5-15min at a temperature ranging from -40 DEG C to -100 DEG C, centrifuging and taking supernatant. The invention further provides a method for qualitative and quantitative detection of oligosaccharides in the pretreated breast milk according to a liquid chromatography-mass spectrometry method. The method for simultaneous detection of various oligosaccharides in non-reducing breast milk by liquid chromatography-mass spectrometry is established and has advantages of effectiveness, quickness and simplicity in pretreatment. AQ Exactive detector is adopted for mass spectrometry, liquid-phase gradient elution parameters and mass spectrometric detection parameters are determined, ion information of non-reducing breast milkoligosaccharides in mass spectrometric detection under a positive ion mode is given, and the method can be well applied to qualitative and quantitative detection of the oligosaccharides in the breastmilk.

A method for measuring the content of melamine in a liquid sample uses a portable Raman spectrometer (SERS) based on gold nano-particle substrates to measure Raman spectrum for the liquid sample through pretreatment. The method for measuring the content of melamine in a liquid sample in the invention is convenient, sensitive, quick and practical, has simple pretreatment, quick (including pretreatment and detection and being finished in 30min, particularly capable of being finished in 2min in Raman enhanced spectrum detection) and sensitive measurement, and is applicable to field high-flux detection; and the method is portable, needs few consumption of sample, and can be qualitative and quantitative.

A method and an apparatus are provided for mounting and removing electronic components using solder bumps while constraining thermal stresses to a substrate. The method and apparatus for mounting and removing an electronic component (bear chip 32) to be soldered onto the substrate with solder bumps 114 is configured to move the electronic component to detect contact of the solder bumps with the substrate or contact of a tool (chuck unit 38) with the electronic component, to define the contact as an original point for raising a heating temperature of the electronic component and the substrate from the heating temperature to a maximum heating temperature HTm as well as move the electronic component in conformity with the temperature rising, and to move the electronic component from a position where the maximum heating temperature is achieved to a mounting height of the substrate.

The invention discloses a breeding pollution comprehensive treatment system and method of a large-scale pig farm. The system comprises a source separation pigsty, a pigsty washing water treatment system, a solid-liquid separation system, a solid high-temperature aerobic fermentation system, a liquid high-temperature aerobic fermentation system, an odor and flue gas treatment system, a boiler system and a detection control system. The source separation pigsty is designed to be a pigsty with fecaluria separated from rainwater, pigsty washing water and drinking residual water. A sludge pump pumps the fecaluria to a solid-liquid separation device. Solids separated out from the solid-liquid separation device are conveyed to the solid high-temperature aerobic fermentation system. Liquid separated out from the solid-liquid separation device is conveyed to the liquid high-temperature aerobic fermentation system. A fermentation odor exhaust opening of the solid high-temperature aerobic fermentation system, a fermentation odor exhaust opening of the liquid high-temperature aerobic fermentation system and exhausted flue gas of the boiler system are connected with the odor and flue gas treatment system through pipelines. The boiler system comprises a boiler, a circulation pump, a hot water pipeline and a water return pipeline. Sensors of the detection control system are arranged in the above systems, and the detection control system carries out connection control over the above systems. According to the system and method, pollution of the large-scale pig farm is comprehensively treated, and zero emission, zero pollution and resourceful utilization of pollutants of the large-scale pig farm are achieved.

The invention discloses a dimethyl carbonate supported catalyst directly synthesized by methanol and carbon dioxide and a preparation method and a use method. The catalyst adopts diatomite as carrier, transition metal copper and nickel as main components of active components and zinc, iron, cobalt and the like as additives, wherein, the weight percent of diatomite in the catalyst is 60-95%, the weight percent of the transition metals is 5-30% and the weight percent of the additives is 0-15%. The preparation method comprises the following steps: soaking the carrier in a mixed solution of soluble transition metal salt and the additives, dispersing with ultrasound, evaporating and drying, calcining and reducting with hydrogen to obtain the supported catalyst. The use method comprises the following steps: placing the catalyst in a reaction device, adjusting the molar ratio of gas phase methanol to carbon dioxide to 2:1-3:1, and performing a reaction at 110-140 DEG C under the pressure of 0.6-3.0 MPa. The catalyst has the advantage of simple preparation steps, good stability and high catalytic efficiency and overcomes the defect that the carrier used by the existing catalyst needs be processed through complicated steps for pretreatment and has high price and instable catalytic performance.

The present invention relates to a method for reducing detoxification of chromium residue under a high temperature with industrial wastes. Reducing metallurgy wastes in a waste tank are heated and melted. When the temperature becomes constant, the chromium residue is added into the tank. The toxicant in the chromium residue is Cr6 mainly in the form of water-soluble Na (SUB)2( / SUB)CrO (SUB)4 ( / SUB) and acid-soluble CaCrO (SUB)4( / SUB). Under the high temperature, Cr6 is reduced into intoxicant Cr3. After the chromium residue is cooled down to the room temperature naturally, the removal rate of Cr6 reaches over 99 percent in the final residue. The method is provided with an appropriate process flow, and the device is simple and easy for operation. Heat of the material itself is fully used, so the high efficiency is high, which is beneficial to the high-temperature reducing of chromium residue. The chromium residue is thoroughly detoxicated. Moreover, no environmental pollution is caused and the cost is low, so the method is applicable for scaled detoxification of chromium residue in the industry.

The invention belongs to the technical field of chemical materials and discloses an anticorrosion treatment process for converting / electro-statically spraying environment-friendly zirconium titanate on surfaces of aluminum alloys. The anticorrosion treatment process comprises the following steps: (1) carrying out surface pretreatment on the aluminum alloys; (2) converting the surfaces of the aluminum alloys, putting the aluminum alloys subjected to surface pretreatment into a zirconium titanate converting solution, soaking, washing, standing and drying the aluminum alloys to obtain conversion films; (3) suspending the dried aluminum alloys in a powder spraying room and electro-statically spraying organic powder on the aluminum alloys; and (4) standing, preserving heat at 180-200 DEG C, then cooling to obtain anticorrosion coatings. According to the anticorrosion treatment process, the conversion treatment is low in film-forming temperature and short in film-forming time; the zirconium titanate treatment solution is stable, chromium-free and environmentally-friendly; through the treatment process, the surfaces of the aluminum alloys are high in corrosion resistance; the conversion films are excellent in combination with the aluminum alloys and the organic coatings.

The invention discloses a group relationship type identification method and apparatus, and belongs to the field of data mining analysis. The group relationship type identification method comprises thesteps of receiving a group relationship type identification request; obtaining group information corresponding to the request; according to predefined target data fields, extracting target data corresponding to members in a group from the group information, thereby forming personal data sets; inputting the personal data sets to a group classification deep neural network model, wherein the group classification deep neural network model is obtained by training according to the predefined target data fields; and according to an output result of the group classification deep neural network model,determining a relationship type of the group. According to the technical scheme, the relationship type of the group can be identified through simple preprocessing operation and the group classification deep neural network model in combination with the data mining analysis technology, so that the manpower cost required for obtaining earlier stage features is reduced, the deployment and building complexity of the model is low, and the universality of the model is high.

The invention provides a food waste hydrolysis acidifying reactor, which comprises a hydrolysis tank and a top cover disposed thereon; a sieve is disposed slantways in the hydrolysis tank; a feed arrangement is disposed on the upper portion of the hydrolysis tank; a slag discharging device and a liquid discharging device are disposed on the lower portion of the hydrolysis tank respectively corresponding to the upper side and lower side of the sieve; the bottom of the hydrolysis tank is a funnel shaped structure with a silt orifice disposed on the bottom; the top cover is an outer-inner double layer structure with an oil-collecting device and a gas-exhausting apparatus disposed between the two layers; a spraying device is disposed on the bottom of the top cover; and a water-filling apparatus is disposed on the bottom of the hydrolysis tank. The invention can perform effective hydrolytic treatment to the un-sorted food wastes directly, and obtain acidifying liquid used for producing methane by anaerobic digestion treatment, simplifies the pretreatment process of the food wastes greatly, saves energy consumption, and reduces equipment investment.

The invention discloses a method for analyzing a non-conductor material by utilizing a glow discharge mass spectrum, comprising the following concrete steps of: (a), processing the non-conductor material to be analyzed into a strip sample; (b), cleaning and stoving the strip sample; (c), placing metal indium into a silica crucible and heating to a molten state; (d), cladding the surface of the strip sample with a layer of metal indium membrane; (e), cleaning and stoving the strip sample again; and (f), carrying out direct current glow discharge mass spectrum analysis. By utilizing the analysis method provided by the invention, sample grinding and polishing are not needed, the pretreatment is simple and the pollution is avoided; the operation is simple and convenient, the usage amount of the metal indium is greatly decreased and the analysis cost is reduced; the discharge of the sample is similar to that of a conductor sample and is easily stabilized, the stability of a signal is good, the SNR(Signal to Noise Ratio) is ideal, the analysis time is shortened and the analysis efficiency is increased; the method is suitable for the analysis of massive or crystalline materials, the universality is strong and the application range is wide; and the sample has very good discharge stability and analysis repeatability.

The invention is a slag heat-covering steam-preserving processing method, including the steps: preposing slag, feeding slag, feeding water, supplying steam, heat-covering stabilizing and flush practice. It directly places blocky slag in a heat-covering set, with the aid of water spray to crack the slag and associated with heat preservation by heat-covering and steam supplication and supplement, maintains the slag temperature within the set temperature of 100 deg.C-200 deg.C to provide enough stabilizing temperature, to make dissociative calcium oxide in the slag able to quickly hydrolyze into calcium oxide, and finally achieves the purpose to stabilize and crush.

The invention relates to a full-automatic QuEChERS preprocessing all-in-one machine and a preprocessing method. The preprocessing all-in-one machine comprises a reagent container, wherein the reagent container is connected with a container distributor; the container distributor extends out to form liquid discharge pipes; the liquid discharge pipes are connected with a plurality of extracting centrifugal pipes; each extracting centrifugal pipe is connected with an impurity-removing centrifugal pipe through a first guide pipe; the preprocessing all-in-one machine further comprises pulverizers and an inner sucking pump; the pulverizers pulverize samples in the extracting centrifugal pipes; the inner sucking pump pumps a supernatant liquor in the centrifugal pipes into the impurity-removing centrifugal pipes; the impurity removing centrifugal pipes are connected with filters through second guide pipes; the supernatant liquor in the impurity removing centrifugal pipes is pressurized by a pressure pump and enters sample introduction containers through the filters. The preprocessing all-in-one machine combines the process of sample pulverization, liquid adding, extraction, centrifugal separation and solid phase extraction into one, saves time, simplifies operation and steps, reduces errors, and is efficient and high in safety.