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261results about How to "Strong responsiveness" patented technology

Method for producing high carbon steel by high-catching carbon method

The invention provides a method for producing high-carbon steel by a high-carbon-withdrawal method, in particular to a smelting process of high-carbon-withdrawal tapping when a converter adopts a single slag process to produce high-carbon steel. The process comprises the following steps of: (1) putting molten iron and scrap steel into the converter according to the requirements on tapping temperature and a certain hot metal ratio; (2) air refining with the oxygen supply strength of 3.1 to 3.4Nm<3> / min / t in the converter; (3) adding active lime and an ore slagging element into the converter; (4) adopting an oxygen supply system of different lance positions under constant flow, adopting rather high lance positions in the whole course of air refining of the converter, and adopting a lance position system in which lance positions get lower piecewise from the beginning to the end of air refining; (5) adding ore and fluorite in small amount by a plurality of batches when the total air refining oxygen consumption is within 70 percent to 85 percent; (6) finishing the air refining of the converter, deslagging by turning down the converter, temperature measurement and sampling; and (7) converter tapping. The smelting process has advantages of short time of air refining of the converter and active slag, and can meet the dephosphorization effect under the high-carbon-withdrawal condition of molten steel, and realize the high-carbon-withdrawal tapping.
Owner:SHOUGANG CORPORATION

Swirling burner for pulverized coal dense and thin separation of lignite

The invention relates to a swirling burner for pulverized coal dense and thin separation of lignite, belongs to the technical field of a boiler burner, and aims to solve the problem that the coal-airratio of primary air and the primary air ratio of the existing swirling burner for burning lignite are larger, and the secondary air ratio is smaller, so that the momentum ratio of primary air and secondary air is much different from that of burning bituminous coal, and the flow field and the burning process control of the burner are affected; and thus, the burning process of the burner is not easy to control, the stability of a flame backflow zone is poor, and higher NOx pollutants are produced. The swirling burner for pulverized coal dense and thin separation of lignite comprises a central air pipe, a primary air pipe, a secondary air pipe, a secondary air swirl vane, a venturi pulverized coal concentration pipe, thin-phase swirl vanes, a dense and thin separation isolating barrel and apulverized coal dense and thin separation device, wherein the central air pipe, the dense and thin separation isolating barrel, the primary air pipe and the secondary air pipe are arranged together from inside to outside in a sleeved mode, and every two adjacent components are arranged at intervals; and a plurality of thin-phase swirl vanes which are uniformly distributed on the peripheral direction of the primary air pipe are arranged between the dense and thin separation isolating barrel and the primary air pipe.
Owner:HARBIN BOILER

Landslide displacement dynamic prediction method based on multiple influence factors

PendingCN112270400ASolution can't be keptSolve the difficulty of integrating multi-source heterogeneous impact factors for collaborationCharacter and pattern recognitionDesign optimisation/simulationMoving averageLandslide
The invention discloses a landslide displacement dynamic prediction method based on multiple influence factors. The landslide displacement dynamic prediction method is specifically implemented according to the following steps of 1, decomposing a landslide cumulative deformation displacement time curve according to a time sequence addition model; 2, extracting trend term displacement from landslidecumulative deformation displacement time curve decomposition by adopting a moving average method; 3, predicting trend term displacement by adopting a cubic polynomial; 4, selecting a main influence factor from the predicted trend term displacement by adopting a grey correlation degree sieve and taking the main influence factor as an initial input vector of a deep learning LSTM neural network model to predict the landslide periodic term displacement; and 5, according to a time sequence decomposition principle, superposing the predicted values of the displacement sub-sequences to obtain a finalpredicted value of the displacement, thereby finishing the dynamic prediction of the landslide displacement, and solving the problem that information at a long ago moment cannot be reserved in the prior art.
Owner:XI'AN POLYTECHNIC UNIVERSITY

Production method of high-adsorptivity melt-blow non-woven fabrics

The invention discloses a production method of high-adsorptivity melt-blow non-woven fabrics. The production method comprises the production steps that (1), formaldehyde removal particles and activated carbon particles are stirred and mixed evenly according to the mass percent of (25-75%):(75%-25%) to obtain annexing agent materials; (2), macromolecule granules and an assisting agent of non-woven fabrics with the weight percent being 25:(0.4-1.6) are mixed and stirred evenly, melt spinning is carried out through a melt-blow method, the mixture is evenly mixed with the annexing agent materials in the step (1) before net formation, and the high-adsorptivity melt-blow non-woven fabrics are obtained by the utilization of air currents or mechanical net formation. The formaldehyde removal particles comprise potassium permanganate, platinum powder, manganese acetate, sodium hydroxide, activated aluminum oxide and titanium dioxide all of which the mass percent is 1:(0.01-0.05):(0.5-1.0):(1-2):(0.3-0.8):(1-3). The formaldehyde removal particles in the non-woven fabrics can capture target molecules and make contact with active constituent in the non-woven fabrics to generate the chemical adsorption reaction, and the formaldehyde removal rate is extremely high.
Owner:广东美沃布朗科技有限公司

Self-moving type water jet drilling machine

The invention belongs to drilling machine equipment and particularly relates to a self-moving type water jet drilling machine. The self-moving type water jet drilling machine is composed of a walking device, a lifting device, a feeding device, an inclination adjusting oil cylinder, a stabilizing oil cylinder, a water jet drilling device, a control rod, a rear supporting oil cylinder and a rear supporting seat. The drilling machine is capable of achieving crawler belt self-walking, stable in walking, high in climbing ability, capable of turning in situ and flexible; the water jet drilling technology is adopted, and a drill bit is small in size, small in recoil and vibration and convenient to operate; dust and heat emitting are avoided, and the fireproof, anti-explosion and chemical reaction resisting capability is high; meanwhile, the dust fall effect of water can be used for remarkably reducing dust on a working surface, and the field construction condition is improved; the service life of related matching machines can be prolonged with the cooling effect of water; the drilling depth, height and perpendicularity are all adjustable, and the drilling machine is especially suitable for drilling coal mine underground gas extracting and exhausting holes, advanced detection holes, fluid injection fire-fighting holes, coal bed water injection holes, outburst prevention pressure releasing holes and geological exploring holes and other engineering hole construction.
Owner:宿州学院

Method for producing coal gasification formed coke

The invention relates to a method for manufacturing coal gasification type coke. Blind coal is used as a main material, is added with a caking agent and is pressurized to form type coal; the type coal is subjected to middle-temperature carbonization and high-temperature oxygen-isolated carbonization to manufacture type coke, wherein raw material coal comprises 75 to 90 percent of blind coal, 3 to 10 percent of one-third coking coal, 5 to 12 percent of fat coal and 2 to 10 percent of graphite; the composite caking agent is made from a mixture of hydrochloric acid and sodium hydroxide accounting for 0.1 to 0.5 percent of the weight pulverized coal, a polyvinyl alcohol modified solution accounting for 7 to 10 percent of the weight the pulverized coal, weathered coal accounting for 5 to 10 percent of the weight the pulverized coal and high aluminium powder accounting for 0.5 to 3 percent of the weight the pulverized coal according to proportion. The manufactured product has high fixed carbon and high heating power, can substitute for the blind coal or the coke to produce water gas, does not need to make any reconstruction on the prior gas generating furnace, can reduce the production cost of the water gas, improve the economic value of the pulverized coal of the blind coal, can be widely applied to fertilizer, metallurgy, building materials and other industries, and has good market application prospect.
Owner:福建龙耀煤业科技有限公司

Clostridium perfringens alpha toxin double-antibody sandwich ELIS quantitative determination method

The invention relates to a clostridium perfringens alpha toxin double-antibody sandwich ELIS quantitative determination method. According to the clostridium perfringens alpha toxin double-antibody sandwich ELIS quantitative determination method, alpha toxin protein obtained via prokaryotic expression is taken as an immunogen; monoclonal antibodies obtained via hybridoma technique are taken as detection antibodies and capture antibodies; reaction conditions are optimized via experiments; alpha toxin protein samples with a series of concentration are used for construction of a standard curve; the double-antibody sandwich ELIS method is established; and indexes of the double-antibody sandwich ELIS are verified. The clostridium perfringens alpha toxin double-antibody sandwich ELIS quantitative determination method specifically comprises following steps: (1) prokaryotic expression of alpha toxin; (2) preparation of anti-alpha toxin monoclonal antibodies; (3) establishment of the double-antibody sandwich ELIS method; (4) establishment of the standard curve; and (5) performance evaluation on the double-antibody sandwich ELIS method. The clostridium perfringens alpha toxin double-antibody sandwich ELIS quantitative determination method is excellent in specificity, and high in sensitivity and stability, is fast and convenient, and can be used for effective quantitative determination of alpha toxin in A-E type clostridium perfringens cultural supernatants; and the high-efficient detection method is provided for alpha toxin determination.
Owner:SHANDONG AGRICULTURAL UNIVERSITY
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