74results about How to "High technical difficulty" patented technology

The invention discloses a method for separating vanadium-titanium magnetite to extract iron, vanadium and titanium, comprising the following steps of: magnetically selecting raw magnetite, that is, acquiring iron-vanadium concentrate and tail magnetite after performing magnetic selection on the vanadium-titanium magnetite; sorting titanium concentrate from the tail magnetite, that is, acquiring the titanium concentrate after performing floating selection on the obtained tail magnetite; roasting and magnetically selecting the titanium concentrate, that is, performing enriched-titanium impurity-removing magnetic selection after roasting the titanium concentrate; finely selecting the iron-vanadium concentrate, that is, performing the magnetic selection and fine section again on the iron-vanadium concentrate obtained from magnetic selection; reducing and smelting, that is, mixing the titanium concentrate obtained from the impurity-removing process with the iron concentrate according to the beneficiation yield, adding in a reducer and soda ash to perform reduced iron and vanadium smelting process; purifying vanadium slag, that is, removing the impurity of the vanadium slag obtained by reducing and smelting by using the acidic dipping to obtain the high-quality titanium slag product with the content of TiO2 larger than 92%; and extracting vanadium from pig iron, that is, performing vanadium extraction by converter blowing on the vanadium-containing pig iron obtained by reducing and smelting to obtain the semi-steel and vanadium slag. The method not only improves the utilization ratio of titanium, iron and vanadium but also obtains the high-titanium slag product with the content of TiO2 larger than 92% so as to widen the application field of titanium.

The invention discloses self-compacting concrete prepared from concrete mixing station waste slurry.The self-compacting concrete is prepared by mixing, by weight, 270-330 parts of cement, 135-165 parts of pulverized fuel ash, 90-110 parts of the concrete mixing station waste slurry, 770-840 parts of river sand, 875-940 parts of gravels, 4.5-5.5 parts of a water reducing agent and 100-150 parts of water, wherein the concrete mixing station waste slurry is formed by precipitating concrete mixing station wastewater, the water content of the concrete mixing station waste slurry is 45%-50%, and the concrete mixing station waste slurry is generated in 24 hours.Accordingly, the self-compacting concrete is prepared from the waste slurry obtained by precipitating the concrete mixing station wastewater, therefore, the dosage of the cementing material and the water is decreased, the cost of the self-compacting concrete is greatly reduced, harmless high-additional value utilization of the concrete mixing station waste slurry is achieved, the very good environmental protection effect is achieved, and a green sustainable development road is achieved.

The invention discloses a three-dimensional imaging optical thin film, which comprises a transparent spacing layer, a micro-reflective focusing unit array layer, and a micro-graphic unit array layer. The transparent spacing layer has two opposite surfaces. The micro-reflective focusing unit array layer is arranged on one surface of the transparent spacing layer and comprises a plurality of asymmetrically arranged micro-reflective focusing units. The micro-graphic unit array layer, opposite to the micro-reflective focusing unit array layer, is arranged on the other surface of the transparent spacing layer and comprises a plurality of micro-graphic units. The micro-reflective focusing unit array layer and the micro-graphic unit array layer are matched with each other, so that the three-dimensional imaging optical thin film can form one and only one suspended image suspended in the transparent spacing layer only when being viewed form the side of the micro-graphic units. The suspended image of the three-dimensional imaging optical thin film is a single-channel or multi-channel pattern. When the imaging thin film is inclined from side to side or inclined back and forth, no other amplified micro-graphic unit enters the viewing area. The thin film is unique in visual experience and can be clearly observed in the front perpendicular condition.

The invention discloses a method for extracting titanium from vanadium-titanium magnetite. The method comprises the following steps: adding sodium or potassium salt additive in the reduction smelting of an iron ore concentrate electric stove to obtain liquid iron and titanium-containing slag, wherein vanadium and iron are reduced to enter liquid iron, under a smelting high temperature condition, silicon and aluminum impurities form sodium aluminosilicate capable of being dissolved in dilute acid with the sodium or potassium salt additive, and enabling the sodium aluminosilicate and titanium and aluminum magnesium impurities to remain in the titanium-containing slag; purifying the titanium-containing slag by virtue of a wet-method metallurgical impurity removal method, to acquire a titanium slag product with TiO2 content more than 75 percent. For the application problem of titanium in the iron ore concentrate, the slag modification additive is added in the reduction smelting process, so that not only is the mobility of the slag improved, but also a condition is created for removing the later silicon-aluminum impurities of the slag, the high-efficiency separation and extraction problem of the titanium in the iron ore concentrate can be well solved, the resource utilization rate of the iron, titanium and vanadium is greatly increased, and the utilization rate of the titanium is increased about 3 times compared with the flow of a blast furnace.

The invention relates to an information-separation-management-based cross-domain safety authentication method. A user carries out registration by using a user name Na at a website, and the website establishes an association relationship between the Na and Ca without the need for setting a password of an account; the website establishes a correspondence relationship with an authentication APP by an authentication server, wherein the website establishes a correspondence relationship with the authentication server by the Ca, the authentication server establishes a correspondence relationship between the Ca and an identification code, and the authentication APP establishes a correspondence relationship between an identification code X and the user name Na, and data interaction is carried out based on the above-mentioned correspondence relationships during logging-in steps. According to the invention, complete information of an account of a user is segmented and the segmented information is managed respectively by third parties; and authentication is carried out by executing three authentication links from a website, an authentication server, and a mobile terminal device each time, thereby realizing safety identity authentication. No complete data can be obtained even though one or two links are cracked, so that safety and reliability are improved.

Drug substances comprising a pharmaceutically acceptable organic acid addition salt of amine containing pharmaceutically active compounds useful for the treatment of a therapeutic ailment administration and exhibiting prophylactic properties when employed in non-therapeutic administration.

This invention provide an electricity supply method and device, which has the following advantages: trackless or track automobile or moving robots without cable for supply; less limitation on the robot movement or trackless automobiles. The trackless or track automobile or moving robot without power storage device decreases the self-weight of the trackless automobile or moving robot to improve the energy usage efficiency.

The invention discloses a novel device for increasing air volume and improving fan efficiency, belonging to the technical field of wind energy utilization. and is composed of one or more support frames that stabilize the wind gathering surface; a wind countermeasure device is also installed on the support frame, and the wind countermeasure device is connected with a fan or a wind generator; the support frame is composed of Track or support thru-axle support.

The invention relates to a method for realizing anti-tampering of web page content based on an operating system kernel, which relates to the field of information technology. The necessary modules forrealizing the step of the invention include an operating system bottom layer, a kernel hijacking module, a scheduling module, an initialization module, a shared memory area, a bidirectional pointer queue, a configuration file, a web page fingerprint memory and a backup module. The invention rapidly verifies the authorization of the files of the current operation process and the current operation directory by means of intercepting the system call. For the illegally authorized process, the operating system is suspended to protect the safety of the directory file. The tamper-proof technology based on operating system kernel improves the technical difficulty of tampering, prevents the illegal operation of files, and ensures the security of web server file system more effectively.

The invention provides a multimedia broadcasting system, a method and a system for safely playing multimedia broadcasting contents, in particular relates to a terminal system for safely playing the multimedia broadcasting contents. The terminal system for safely playing the multimedia broadcasting contents comprises an encrypted related information extracting module and a channel and multiplexingcontrol information decrypting module, wherein the encrypted related information extracting module is used for extracting an encrypted related message and a channel and multiplexing control information cipher text from received broadcasting information; and the channel and multiplexing control information decrypting module is coupled with the encrypted related information extracting module, and performs the decryption operation on the channel and multiplexing control information cipher text according to the encrypted related message to obtain channel and multiplexing control information. The terminal system for safely playing the multimedia broadcasting contents can prevent illegal contents from being received and broadcasted by encrypting the channel and multiplexing control information.

The application provides a method and a system for safety certificate and relates to the field of safety technologies. The method comprises a step of receiving a verification acquisition request triggered by a user; a step of generating elements to be selected and positional information of each element to be selected in a display interface according to the verification acquisition request, generating verification tasks corresponding to the elements to be selected and the positional information of each element to be selected in the display interface, and generating first matching data corresponding to the verification tasks; a step of sending the verification tasks to a mobile terminal corresponding to the verification acquisition request; a step of sending the elements to be selected and the positional information of each element to be selected in the display interface to a user terminal; a step of sending second matching data sent by the user terminal; and a step of comparing the second matching data with the first matching data and carrying out identifier recognition according to a comparison result. The application can completely improve safety during the user identifier recognition process and protect safety of user information.

The invention discloses a production method of bright and ultra-coarse denier 16f FDY fiber. The production method comprises the following steps: S1 a bright polyester melt as raw material passing through a melt conveying pipeline, being pressurized to 150-200kg by a booster pump and being sent to a melt cooler in sequence, and then the bright polyester melt being cooled to 275-278 DEG C by the melt cooler and being sent to a spinning manifold; S2 after being metered by the metering pump, the melt being sent to the spinning pack arranged in the spinning manifold through a thin pipeline and being filtered by the spinning pack, and then the melt being extruded by a spinnerette and being solidified and cooled to be an as-spun fiber by a cross air blasting device; S3 the as-spun fiber in the step of S2 being cooled by a cooling chimney, being oiled by a winding oil gear, passing through a prior network device, being stretched-set by a first, second, third and fourth hot rollers, passing through a main network device and being packaging by a winding head in sequence. The production method of bright and ultra-coarse denier 16f FDY fiber has the advantages of realizing the production of bright and ultra-coarse denier 16f FDY fiber as well as the possibility of producing high technical difficulty and value-added production on the basis of conventional equipment.

The invention relates to the field of brewing, in particular to a low-temperature fermentation ice wine brewing process. The low-temperature fermentation ice wine brewing process comprises the processes of squeezing ice grape juice, fermenting the grape juice, stopping fermentation, carrying out subsequent treatment, storing and the like, and is characterized in that when the grape juice fermenting process is started, the temperature of the grape juice is increased to 18 DEG C and is kept for 1-2 hours; after the fermentation is carried out, the temperature is decreased to 13-15 DEG C; the temperature is controlled to 13-15 DEG C to carry out low-temperature fermentation. According to the low-temperature fermentation ice wine brewing process, the low-temperature fermentation in an ice wine production process is realized, and the aroma and nutritional ingredients in grapes can be kept at maximum, so that the quality of the wine is high.

Disclosed is a suspension imaging optical film. The film comprises a first polymer having a first surface and a second polymer having a second surface, wherein the first surface is opposite to the second surface. A microlens structure is formed on the first surface and comprises a plurality of microfocusing units. A cavity structure is formed on the second surface, and several image-text structures imaged by the microlens structure are stored in the cavity structure. A fusion part is formed at the adjacent parts of the first polymer and the second polymer, in order to allow the microlens structure to be integral with the cavity structure. The microfocusing units fit the image-text structures, so that when the suspension imaging optical film is observed from the side of the image-text structure or the microfocusing unit, a suspension image that is suspended on the suspension imaging optical film is formed. The suspension image suspended on the suspension imaging optical film is a single channel pattern or a multi-channel pattern. The purpose of reducing the thickness of the suspension imaging optical film is achieved.

The invention provides a production method of an 83dtex/72f lustrous fine-denier flat FDY fiber. The method comprises the steps that a lustrous polyester melt as a raw material passes through a melt conveying pipeline and is pressurized through a booster pump and then conveyed into a melt cooler for cooling; the cooled melt is conveyed into a spinning manifold, then enters a metering pump through a melt distribution pipeline and conveyed into a spinning component through the melt distribution pipeline after precise metering; the melt is squeezed out through a spinneret plate after filtration and subjected to cooling solidification through a circular blow air duct to generate an as-spun fiber; the as-spun fiber sequentially passes through a spinning pre-interlacer, a first roller, second and third hot rollers and fourth and fifth hot rollers for drawing and setting, then sequentially passes through an oil atomizer for finishing, a sixth roller, a main interlacer and a seventh roller, and finally is packaged for formation. Based on an original device platform, a novel variety of fiber which is high in technical difficulty and high in additional value of products is produced through technology improvement and innovation, the fiber is large in product shaped degree, and the enterprise competitiveness is improved.

The invention discloses membrane-coated drug-loaded microspheres. Microcrystalline cellulose, organic calcium and bis (2-ethylhexyl) sodium sulfosuccinate are adopted as pore-forming agents of macroporous porous silicon, mesoporous or hollow or three-dimensional penetrating porous silicon dioxide is obtained after calcination, then acidizing treatment is conducted through hydrochloric acid, calcium in a silicon-calcium skeleton is dissolved and removed, and macroporous and three-dimensionally penetrated porous silica is obtained, the porous silicon framework and the surface of the porous silicon are very rough, pits and grooves are very rich, and loading and adhesion of drugs are facilitated. Besides, a drug-sustained-release parasite-expelling pet collar is prepared by using the membrane-coated drug-loaded microspheres so that the obtained pet collar has a good parasite-expelling effect, a long-acting sustained-release effect and a good quality guarantee effect. The product technology is mature, the production operation is simple and easy to understand, and the production cost is relatively reasonable.

The invention relates to UV ink serial products special for novel 'scratch type' bills and application thereof, which comprise UV back black ink, UV isolating oil ink, UV silver adjusting oil ink and special silver slurry and application thereof. The invention provides the UV ink serial products special for the novel 'scratch type' bills, which have the advantages of high technical content, various varieties and wide applicability. The performance of the UV back black ink, the UV isolating oil ink, the UV silver adjusting oil ink and the special silver slurry can be adjusted and controlled according to the requirements of printing machine types and bill paper on printing finished products to achieve the controllable isolation effect, the controllable printing speed, the scratching difficulty, the drying speed, the printing thickness, the controllable back black printing and the controllable covering effect, and achieve coordinating and unifying so as to adapt to the modern high-speed printing and produce products satisfactory to users.