143results about How to "Low added value" patented technology

The invention relate to a control technique of the rolling process of a rolling steel. The invention discloses a control method of a rough rolling intermediate billet camber. The control method combines a position control with a pressure control; in a multi-pass rolling of the positive-pass and reverse-pass of a roughing mill, the camber generation of the intermediate billet is restricted. The control method of the invention can reduce the additional value of the openness of a side guide plate, leads the flexible deformation of the intermediate billet between the inlet and the outlet of the roughing mill in the horizontal direction to be restricted by the side guide plate, reduces the camber of the intermediate billet, and prevents the severe abrasion which is caused by the long-term contact of the side guide plate and the intermediate billet.

The invention provides walnut powder and a production method thereof; walnut kernel is peeled by high pressure water spraying, bubble water stream impact and ultrasonic wave vibration after being soaked by compound alkaline liquid, and then second-grade cold pressing is carried out to the peeled walnut kernel after the peeled walnut kernel is dried and crushed, the walnut kernel is crushed, filtered, batched and colloid-milled to be refined, and then a complex stabilizer is added in the walnut kernel to be sterilized, concentrated, homogenized and dried to obtain the walnut powder. The method has low damage degree, can effectively prevent protein denaturation and reduce alkaline liquid amount; the second-grade cold pressing technology is adopted, the denaturation degree of the protein of the walnut cake is reduced, and the walnut powder is prepared by high-pressure homogeneity and spraying drying; the visual color and luster, solubility and the content of the protein and other indexes of the product are superior to the similar products in the current market. The invention realizes the comprehensive utilization of the walnut resource, the technology is advanced, simple and practical and is easy to popularize, thereby having good economic and social benefits.

The present invention relates to preparation and application of crust oligosaccharide and belongs to the field of deep chitin processing technology. Non-specific enzyme is used to raise the hydrolysis degree of chitosan and the separation and purification of hydrolytic product. The key point of the present invention is that the chitosan material is produced into crust oligosaccharide powder through acid dissolving, heating, enzymolysis and hydrolysis with compoiste, enzyme comprising polysaccharide hydrolase, proteinase and lipase, deactivating enzyme, filtering, ultrafiltering, ion exchange or nanometer filtering, vacuum concentration and drying. The product is used in producing various functional health foods with the functions of immunological regulation and blood fat regulation.

The invention discloses a coke powder-based cathode material of a lithium ion power battery and a preparation method thereof. The cathode material has a D50 of 10-30 [mu]m, a minimum granularity of 5 [mu]m, a maximum granularity of 30 [mu]m, and a tap density of 1.1-1.5 g/cm<3>. The cathode material has a core-shell structure, wherein a core is graphitized coke powder, and a shell is composed of coal pitch pyrolytic carbon and metal particles. The cathode material contains 95.00-99.00 % of solid carbon and 1-5 % of metal or metal oxide particles by mass percent. The preparation method comprises crushing, grading and purifying the coke powder, cladding coal pitch on the coke powder particles, graphitizing under a high temperature, attaching metal or metal oxide on the particles, etc. The cathode material is excellent in rate performance, good in high-temperature and low-temperature performances, low in manufacture cost and suitable for large-scale industrialization.

The invention discloses an aromatization catalyst and applications thereof, and aims at solving the problems such as low yield of benzene and mixed xylene in the liquid outcomes and the like during the existing hydrocarbon aromatization reaction. The catalyst comprises the following components by weight percentage of 30-90wt% of molecular sieves, 0-60wt% of carriers and 10-20 wt% of adhesives, wherein the molecular sieves are mixtures of a molecular sieve I, a molecular sieve II, a molecular sieve III and a molecular sieve IV; the molecular sieve I is at least one modified HZSM-5 molecular sieve out of modified elements zinc, gallium and lanthanum; the molecular sieve II is at least one modified HZSM-5 molecular sieve out of modified elements bismuth, molybdenum, silver, copper, zirconiumand rhenium; the molecular sieve III is the HZSM-5 molecular sieve formed by modifying polysiloxane; and the molecular sieve IV is a modified hydrogenated mercerization type molecular sieve, a modified hydrogenated Beta-type molecular sieve, a hydrogenated ZSM-11 molecular sieve and a hydrogenated MCM-22 molecular or mixtures thereof.

The invention discloses a composite mineral admixture for concrete. The admixture is prepared by mixing and grinding the following raw materials in percentage by weight: 40 to 60% of lithium slag, 10 to 30% of mineral slag, 5 to 20% of nickel slag, 5 to 10% of aerated concrete waste, 5 to 10% of sulfoaluminate cement clinker, and 0.1 to 0.5% of super plasticizer powder. The industrial wastes are fully utilized, the concrete production cost is reduced, and the admixture has a high activity, barely influences the early and late strength of concrete, has a shrinkage-compensating function and good anti-permeability property, and can improve the service life of concrete.

The invention discloses a preparation method of petroleum-degrading acinetobacter junii bacillus, relates to a preparation method of a petroleum-degrading bacterial agent, and is used for solving the problems that transportation and storage are inconvenient due to the fact that the petroleum is directly degraded by using the bacterial fermentation liquor, the injuries to human bodies are relatively large, and a traditional microbial agent is low in cost. The method comprises the following steps: 1, selecting acinetobacter junii, inoculating into a culture medium, and cultivating to obtain a first-stage seed solution; 2, adding the first-stage seed solution into a fermentation culture medium, and cultivating to obtain a bacterial fermentation liquor; and 3, sterilizing corncob powder, rice bran and wheat bran, mixing any two of the corncob powder, the rice bran and the wheat bran, adding the bacterial fermentation liquor, sodium chloride and monopotassium phosphate to the mixture, mixing evenly, baking, and hermetically storing, so as to obtain the petroleum-degrading acinetobacter junii bacillus. The petroleum-degrading acinetobacter junii bacillus has the advantages of being low in price, easy to degrade, and free of secondary pollution; meanwhile, the soil fertility can be improved; and the method is applied to degradation of petroleum.

The invention belongs to the field of nonferrous metallurgy, and relates to a method for recovering nickel and magnesium elements from a high-magnesium low-grade nickel sulfide ore. The method comprises the main steps of ammonium sulfate roasting and leaching, bacterial leaching, Ni<2+> and Mg<2+> separation, solution crystallization, high-purity magnesium oxide preparation and the like. The method is characterized in that: nickel and magnesium in the high-magnesium low-grade nickel sulfide ore are leached by the two-section leaching process of ammonium sulfate roasting and bacterial leaching, sulfate reducing bacteria are fixed by rice hull, an upflow fixed bed reactor is constructed to adsorb and recover Ni<2+> in solution, magnesium sulfate in the solution is recovered by a solution crystallization method, and high-purity magnesium oxide is prepared by pyrolyzing the obtained magnesium sulfate. By the method, the nickel and magnesium elements in the high-magnesium low-grade nickel sulfide ore can be fully recycled, and the process is simple, low in energy consumption and environmental-friendly.

The invention discloses a method for producing SiF4 from a phosphorus fertilizer industry by-product Na2SiF6 through pyrolysis. The method comprises steps that: Na2SiF6 is dried in a vacuum dryer, and is delivered into a fixed-quantity feeder through a material guiding groove; Na2SiF6 is mixed with NaF in the fixed-quantity feeder, and the mixture is delivered into a high-temperature reaction vessel or a high-temperature circulating fluidized bed; the mixture is subject to pyrolysis for 1-3 hours under a temperature of 600-750 DEG C, wherein the pressure in the high-temperature reaction vessel or the high-temperature circulating fluidized bed is controlled at 10-50mmH2O, such that NaF and SiF4 gases are produced through pyrolysis; NaF is delivered back into the fixed-quantity feeder and is reused; the SiF4 gas is condensed in a condenser, processed though a dust-removing treatment, and purified by using two stages of activated carbon adsorbing columns; the SiF4 gas is then processed through refrigeration compression; the SiF4 gas is delivered into a cylinder, and is stored in the cylinder. The production method provided by the invention is advantaged in low production cost. No waste is generated during the production process, such that clean production is realized. The quality of the produced silicon tetrafluoride gas is stable, and the purity of the silicon tetrafluoride gas reaches 99.9%.

The invention discloses a one-step method for synthesizing fenchol with turpentine. In the method, turpentine is used as a raw material, CHKC-4 is used as a catalyst, the catalytic characteristics of the catalyst, namely high activity and selectivity are utilized to perform catalytic isomerization and hydration on pinene (terpene), isomerization and hydration are completed in one step, and then physical methods and chemical methods are combined, and various advanced separation technologies such as efficient vacuum fractionation and melt crystallization are utilized to perform assembly and integration and prepare the fenchol product of which the yield is no less than 50% and purity is 99%. The method has the following advantages: turpentine is used as a raw material which is abundant, is easy to obtain and has low cost, the synthesis and separation technologies are simple, the method is convenient to operate, the product has high purity and lower production cost, etc. The technology and cost of the method are obviously superior, and the competition of the product in international markets can be increased.

The invention discloses a multi-injection molding process one-time molding method for a high-toughness home appliance panel. The multi-injection molding process one-time molding method is characterized by comprising the following steps of preparing materials for injection molding; inputting relative parameters of the four-stage injection molding process on a control panel of an injection molding machine; pushing a manual/automatic change-over switch on an electric control cabinet to the automatic position; inputting location parameters and pressure holding parameters of a screw rod on a touchinput screen when completion of filling meeting process switching conditions; closing a safety door of the injection molding machine, pressing an on/off switch in an on position to start the injectionmolding machine; and opening a mold and taking out workpieces after completion of injection molding. According to the multi-injection molding process one-time molding method, the injection molding machine is controlled by a PLC to conduct regulation to adopt different injection molding processes at different injection molding stages according to data stored from the control panel of the injectionmolding machine. Meanwhile, compared with a bonded panel, the panel manufactured through multi-injection molding one-time molding has the good integrity and toughness and is not likely to get bent and fall off.

The invention provides a method for preparing starch-based biodegradable plastic. The starch-based biodegradable plastic is prepared by using cassava starch as a raw material and using a modified starch and biodegradable high-molecular polymer blending technology line. The modified starch is prepared by activating dry starch, adding an esterification reagent to the pretreated activated starch, and then adding a solid coupling agent. The biodegradable plastic products are prepared by blending the modified starch, an ethane/vinyl alcohol copolymer, polyvinyl alcohol, a plasticizer and an auxiliary agent.

The invention provides a ginseng polysaccharide chewable tablet and a preparation method thereof. The ginseng polysaccharide chewable tablet is prepared by using a ginseng polysaccharide extract through a modern preparation technology. Animal function test and human body test demonstrate that the ginseng polysaccharide chewable tablet has a health-care function of immunoregulatory.

This invention makes public a kind of changeable imitation fur and linen face fabric weaved together from warp and weft yarns. The warp yarn uses mixed spun yarn with bamboo fiber and fine polyester as raw materials. The weft yarn uses mixed spun multiple color changeable yarn with allotropic and anisotropic polyester and adhesives as raw materials. The processing technique of this changeable imitation fur and linen is also made public. This invention features soft tactility, abrasion resistance, good drapability, air permeability, flexibility, anti-static and anti-bacterial ability.

The invention relates to a glass substrate strip made of a multiplicity of thin-glass segments which are positioned and fixed on an adherent foil. The thin-glass segments are fixed on the adherent foil over the entire area thereof, by way of the entire edge region thereof or by way of parts of the edge regions thereof. The glass substrate strip can comprise lateral transport bands or else coding fields. For storage, it is plated in meandering fashion or is rolled up, and it serves not only for transport and storage but also as a carrier strip in processing steps for the thin-glass segments.

The invention discloses a spray-drying method of broccoli powder. The spray-drying method of broccoli powder sequentially includes the steps of pretreatment of raw material, blanching and color protection, draining, pulping, homogenizing and spray-drying. During blanching and color protection, 0.25mg/l Cu(AC)2 is used as color fixative, the blanching and color protection is performed at 95 DEG C for 90s, resultant color difference is small, and color protection for a finished product is effective. Parameters in the spray-drying include 50% of broccoli liquid, 150 DEG C of temperature, and 800ml/h of compressed air flow. Color difference of the spray-dried product (greenish) is small, and yield of the product is high. In addition, dispersiblity and solubility of the broccoli powder can be improved by the spray-drying method, the broccoli powder is less easy to cake and fast to dissolve, and the broccoli power can be added in other foods without generating rough taste in oral cavity.

The invention discloses a lignin grafted polyamino acid type heavy metal adsorbent and a preparation method and application thereof.The adsorbent is stable in structure, adsorption-desorption can be conducted for multiple times, metal recovery and repeated utilization of the adsorbent are facilitated, and meanwhile lignin and polyamino acid have the advantages of being safe, non-toxic, green, environmentally friendly and the like; and the lignin grafted polyamino acid type heavy metal adsorbent has good economic and environmental benefits.

The invention discloses a method for preparing a multi-level-structured molecular sieve by taking a mesoporous material as an indirect template agent. The method comprises the following steps: mixing aluminum oxide spheres or silicon oxide microspheres, an external silicon source or an aluminum source, phosphoric acid, a template agent and water to form a crystallization raw solution; transferring the uniformly mixed crystallization raw solution into a hydrothermal kettle taking tetrafluoroethylene as a lining, and ageing; after ageing, putting the hydrothermal kettle into a homogeneous reactor for crystallization; cooling a crystallized solution, taking out the crystallized solution and carrying out washing and centrifuging treatment; filtering an obtained solid-liquid mixture, washing and drying; and roasting to remove the template agent to obtain the multi-level-structured molecular sieve. The molecular sieve comprises mesopores and micropores; generation and diffusion of isobutylene in pore channels can be inhibited very well; isomeric hydrocarbon and aromatic hydrocarbon, which have relatively great molecules, can be subjected to more serious diffusion limitation; and meanwhile, the diffusion resistance of a target product, low-carbon olefin, particularly propylene, is reduced due to the presence of the mesopores, so that the prepared multi-level-structured molecular sieve is used as a catalyst, is not easy to inactivate and has good stability.

The invention discloses a method for preparing a ternary precursor material by recycling copper sulfide slag. The copper sulfide slag is subjected to acidification, oxidation leaching, replacing and copper precipitating, iron removing, calcium and magnesium removing, cobalt-nickel-manganese extracting, nickel-cobalt-manganese precipitating and calcining to prepare the ternary precursor material; and according to the method, the defects that in the prior art, the requirement of leaching equipment is high, the processing flow is long, the product additional value is low, the energy consumption is large, and the waste gas is prone to generate to pollute the environment are overcome. The method has the advantages that the process is simple, the cost is low, the method is green and environment-friendly, the comprehensive recovery of valuable metals can be realized, and the total recycling rate of the nickel-cobalt-manganese is up to 97%.

The invention discloses a nickel-plated attapulgite composite material and a preparation method thereof. The nickel-plated attapulgite composite material comprises attapulgite as a matrix, and a nickel layer coated on the surface of attapulgite. The preparation method comprises the following steps: preparing attapulgite deionized water suspension with the concentration of 10-50 g/L, successively carrying out a treatment with surfactant dodecyl benzene sulphonic acid, sensitizing agent and activating agent and a treatment with surfactant dodecyl benzene sulphonic acid under conditions with ultrasonic or stirring, then plating under homeothermic condition at the temperature of 35-60 DEG C for 20-50 min, when finishing plating, carrying out centrifugation, washing and drying to obtain the nickel-plated attapulgite composite material. The invention opens up a new way for the utilization of nano mineral materials in the high technical field, and provides a new direction of the development of absorbing material, thus bringing potential applications of attapulgite.