Patent application number | Description | Published |
20100253145 | APPARATUS, METHOD, AND SYSTEM FOR CONVEYING ELECTRICAL ENERGY - An apparatus, system, and method, the apparatus includes an intelligent energy transfer system including a configurable switching system electrically coupleable to a vehicle. The vehicle includes one of an electric vehicle and a plug-in hybrid electric vehicle. The configurable switching system is configured to convey a first direct current (DC) energy from a first energy source to an energy storage system of the vehicle, receive a first alternating current (AC) energy conveyed to the vehicle, convey a second DC energy from the vehicle to a first DC powered load, and convey a second AC energy from the vehicle to a first AC powered load. Each of the first energy source, the first AC powered load, and the first DC powered load are located remotely from the vehicle. | 10-07-2010 |
20110106327 | ENERGY OPTIMIZATION METHOD - A method for optimizing customer utility usage in a utility network of customer sites, each having one or more utility devices, where customer site information is communicated between each of the customer sites and an optimization server having software for optimizing customer utility usage over one or more networks, including private and public networks. A customer site model for each of the customer sites is generated based upon the customer site information, and the customer utility usage is optimized based upon the customer site information and the customer site model. The optimization server can be hosted by an external source or within the customer site. In addition, the optimization processing can be partitioned between the customer site and an external source. | 05-05-2011 |
20110106328 | ENERGY OPTIMIZATION SYSTEM - A system for optimizing customer utility usage in a utility network of customer sites, each having one or more utility devices, where customer site is communicated between each of the customer sites and an optimization server having software for optimizing customer utility usage over one or more networks, including private and public networks. A customer site model for each of the customer sites is generated based upon the customer site information, and the customer utility usage is optimized based upon the customer site information and the customer site model. The optimization server can be hosted by an external source or within the customer site. In addition, the optimization processing can be partitioned between the customer site and an external source. | 05-05-2011 |
20110175442 | APPARATUS, METHOD, AND SYSTEM FOR CONVEYING ELECTRICAL ENERGY - An apparatus, system, and method, the apparatus includes an intelligent energy transfer system including a configurable switching system electrically coupleable to a vehicle. The vehicle includes one of an electric vehicle and a plug-in hybrid electric vehicle. The configurable switching system is configured to convey a first direct current (DC) energy from a first energy source to an energy storage system of the vehicle, receive a first alternating current (AC) energy conveyed to the vehicle, convey a second DC energy from the vehicle to a first DC powered load, and convey a second AC energy from the vehicle to a first AC powered load. Each of the first energy source, the first AC powered load, and the first DC powered load are located remotely from the vehicle. | 07-21-2011 |
20130320136 | SYSTEM AND METHOD FOR PROVIDING ELECTRICAL POWER - An electrical power unit provides electrical power to an electrical component on-board an aircraft. The electrical power unit includes a hydrogen generation system configured to be positioned on-board the aircraft. The hydrogen generation system is further configured to generate hydrogen using a reaction between water and metal. The electrical power unit also includes a fuel cell configured to be positioned on-board the aircraft. The fuel cell is operatively connected to the hydrogen generation system such that the fuel cell receives hydrogen from the hydrogen generation system. The fuel cell is further configured to generate electrical power from the hydrogen received from the hydrogen generation system and to be electrically connected to the electrical component for supplying the component with electrical power. | 12-05-2013 |
Patent application number | Description | Published |
20100232713 | SYSTEM AND METHOD FOR IDENTIFICATION OF VERTICAL SCROLLING REGIONS IN DIGITAL VIDEO - A vertical scrolling region detector may include a motion estimator that can generate motion vectors between blocks of two or more primary frames of a mixed-mode video sequence. The detector may also include a primary frame motion analyzer that can analyze the motion vectors to detect substantially constant vertical motion of at least some of the blocks between the two or more primary frames. The presence of substantially constant vertical motion may reflect the presence of a vertical scrolling region in the mixed-mode video sequence. Moreover, the detector may also include a consecutive frame motion analyzer that can calculate differences in pixel values between lines of two or more consecutive frames in the mixed-mode video sequence. The differences in pixel values may further reflect the presence of the vertical scrolling region in the mixed-mode video sequence. | 09-16-2010 |
20100253835 | FADE IN/FADE-OUT FALLBACK IN FRAME RATE CONVERSION AND MOTION JUDDER CANCELLATION - A system and method for determining a pixel characteristic of pixels in interpolated frames. Preceding and successive frames are evaluated to determine if there is a frame-wide change occurring to the pixels. To the extent there is a frame-wide change, the pixel characteristic in interpolated frames is accommodated by the frame-wide change. In one implementation, frame-wide changes in luminance, such as fade in and fade out, are detected and the pixel characteristic of pixels in the interpolated frame is determined based at least in part on fallback techniques rather than motion compensation interpolation. | 10-07-2010 |
20100260257 | SMALL DETAIL RESERVATION IN CONTENT-ADAPTIVE QUANTIZATION - Video processing systems and methods for preservation of small details in video undergoing quantization is discussed. Small details are preserved by identifying an area of interest within a video frame, determining whether small details are present within the selected portion of the video frame, and further determining whether those small details may be lost during quantization. In the event that small details are present in the selected portion of the video frame and may be lost during quantization, a color-shifting operation may be performed on one or more color components of the selected portion of the video frame, such as luminance, prior to quantization to preserve the small detail. During the color-shifting operation, the values of at least one color component of pixels representing the video frame are shifted such that the pixels extend between at least two quantization levels when quantized. In this manner, small detail is preserved, while also allowing for a reduction in the total bits of information contained in the video frame. | 10-14-2010 |
20100260384 | SYSTEM AND METHOD OF ADAPTIVE VERTICAL SEARCH RANGE TRACKING FOR MOTION ESTIMATION IN DIGITAL VIDEO - A system and method which determines an adaptive vertical search range used to provide motion estimation in digital video content are disclosed. In some embodiments, a fixed-size vertical search range for the motion estimation is defined and utilized. A reference frame and target frame are stored in memory, and a block in the reference frame is selected for consideration. An offset value is determined which is indicative of a directional shift of the fixed-size vertical search range and the vertical search range is shifted based on the offset value. A motion vector is then estimated using the shifted vertical search range. | 10-14-2010 |
20100283892 | SYSTEM AND METHOD FOR REDUCING VISIBLE HALO IN DIGITAL VIDEO WITH COVERING AND UNCOVERING DETECTION - A system and method for video frame interpolation are disclosed. In one embodiment, the method comprises receiving first motion estimation data representing estimated motion of blocks between a first frame and a second frame, receiving second motion estimation data representing estimated motion of blocks between the second frame and a third frame, determining whether an area in an interpolated frame between the first and second frame is an occlusion area based at least in part on the first and second motion estimation data, and estimating characteristics of pixels of the area based in part on the determination. | 11-11-2010 |
20120044997 | SYSTEM AND METHOD FOR BOUNDARY MOTION VECTOR CORRECTION IN MOTION COMPENSATED FRAME RATE - A method of processing video data includes: receiving a first video frame with first blocks of pixels associated with a known motion vector and a second video frame with second blocks of pixels, the second blocks corresponding to the first blocks, and uncovered blocks adjacent to the first frame boundary not corresponding to the first blocks in the first video frame; determining a first block for each line segment in the second video frame corresponding to a block in the first video frame, wherein the first block has the known motion vector from the first video frame; and assigning a motion vector for at least one of the line segments in the second video frame to the uncovered blocks in the line segment of the second video frame between first block and the first frame boundary. | 02-23-2012 |
20120056874 | DISPLAY SYSTEM WITH IMAGE CONVERSION MECHANISM AND METHOD OF OPERATION THEREOF - A method of operation of a display system includes: receiving a current input image with current input pixels; identifying an input object, having input object pixels, based on differences in characteristics of the current input pixels; calculating an object pixel depth for the input object pixels from an image depth map of the current input image based on a weighted average of depth candidates; and generating a processed image, having a perceived depth, from the current input image with the image depth map and the object pixel depth for displaying on a device. | 03-08-2012 |
20130010873 | SYSTEM AND METHOD OF ADAPTIVE VERTICAL SEARCH RANGE TRACKING FOR MOTION ESTIMATION IN DIGITAL VIDEO - A system and method which determines an adaptive vertical search range used to provide motion estimation in digital video content are disclosed. In some embodiments, a fixed-size vertical search range for the motion estimation is defined and utilized. A reference frame and target frame are stored in memory, and a block in the reference frame is selected for consideration. An offset value is determined which is indicative of a directional shift of the fixed-size vertical search range and the vertical search range is shifted based on the offset value. A motion vector is then estimated using the shifted vertical search range. | 01-10-2013 |
Patent application number | Description | Published |
20080316356 | DETECTION OF PROGRESSIVE PULLDOWN IN A VIDEO SEQUENCE - System and methods for the detection of progressive pulldown in a video sequence are provided. The method comprises calculating a difference between temporally adjacent frames in the video sequence, generating a pattern based upon these differences, and comparing the generated pattern against patterns understood for known progressive film modes in order to determine if the video sequence comprises a known progressive film mode. In one embodiment, the pattern may be adjusted to account for uncertainty in assigning values to the pattern, reducing the likelihood of false detections. In another advantage, confidence metrics are built into the method in order to further reduce the incidence of false detections. | 12-25-2008 |
20080316359 | DETECTION AND INTERPOLATION OF STILL OBJECTS IN A VIDEO SEQUENCE - The present disclosure provides systems and methods for detecting and interpolating still pixels. In certain embodiments, the systems and methods establish a still pixel level for each still pixel, and using that still pixel level, provide an interpolation procedure for determining the pixel value of a selected pixel at a frame a distance α from frame F(t−1). Disclosed embodiments are capable of providing motion compensated interpolation results for a wide variety of circumstances, including cases where the endpoints of the motion vector of a selected pixel to be interpolated vary between substantially still and not still, as well as cases where mixtures of temporal and motion compensation interpolations are necessary. | 12-25-2008 |
20080317128 | SYSTEM AND METHOD FOR BOUNDARY MOTION VECTOR CORRECTION IN MOTION COMPENSATED FRAME RATE - A system and method for more efficiently determining motion vectors of uncovering areas adjacent the edge of frames when the frame image is moving in the direction of the frame boundary. Backwards motion estimation is used to determine a block of video data which is, in one implementation, the block of video data adjacent the frame edge having a reliable motion vector known from the first frame. Once the block is identified, the blocks of video data in the uncovering area between the identified block and the frame boundary can then be assigned the motion vector data of the identified block. | 12-25-2008 |
20090016618 | SYSTEM AND METHOD FOR DETECTING SCROLLING TEXT IN MIXED MODE FILM AND VIDEO - Various embodiments of a system are provided for detecting scrolling text in a mixed-mode video sequence. The system of certain embodiments includes a motion estimator that generates a plurality of motion vectors between blocks of two or more extracted frames of a mixed-mode video sequence. An extracted frame motion analyzer analyzes the motion vectors to detect substantially constant motion of at least some of the blocks between the two or more extracted frames, wherein the presence of substantially constant motion is indicative of the presence of scrolling text in the mixed-mode video sequence. A consecutive frame motion analyzer calculates differences in pixel values between blocks of two or more consecutive frames in the mixed-mode video sequence, wherein the differences in pixel values are further indicative of the presence of scrolling text in the mixed-mode video sequence. | 01-15-2009 |
20100013989 | METHOD AND SYSTEM FOR CONTROLLING FALLBACK IN GENERATING INTERMEDIATE FIELDS OF A VIDEO SIGNAL - A method and system for generating intermediate fields of a video signal are provided. One implementation involves generating intermediate fields of a video signal, by performing interpolation for generating said intermediate (missing) fields of said video signal; and applying fallback interpolation when quality of the interpolated fields is below a threshold or when valid motion information cannot be determined. Fallback interpolation involves estimating a global motion of a scene represented by the video signal, determining a periodic motion count based on the estimated global motion, and controlling application of fallback interpolation based on said periodic motion count. | 01-21-2010 |
20100013992 | METHOD AND SYSTEM FOR DETECTING MOTION AT AN INTERMEDIATE POSITION BETWEEN IMAGE FIELDS - A method and system for detecting motion at a temporal intermediate position between image fields is provided. One implementation involves detecting an uncovering area in the temporal intermediate position in an image field; determining a motion vector candidate, in place of a current original motion vector, for the temporal intermediate position with a detected uncovering area; and determining a motion vector representing motion at the temporal intermediate position by combining the candidate motion vector with a current original motion vector for the temporal intermediate position. Erroneous motion vectors in uncovering areas are eliminated. | 01-21-2010 |
20110150081 | METHOD AND SYSTEM FOR ADAPTIVE QUANTIZATION LAYER REDUCTION IN IMAGE PROCESSING APPLICATIONS - A method and a system for adaptively (dynamically) reducing quantization layer reduction for removing quantization artifacts in quantized video signals is provided. Adaptively reducing quantization layer reduction involves detecting if a selected pixel in a quantized image belongs to a ramp area in each of multiple pre-defined directions, dynamically selecting a quantization level for each of the pre-defined directions based on the corresponding detection results, and refining the pixel based on the selected quantization levels. | 06-23-2011 |
Patent application number | Description | Published |
20120112738 | Sensors for Integrated Monitoring and Mitigation of Scour - Systems and methods for detecting scour. Some embodiments provide systems which include a sensor and a signal generator with a combined density equal to or greater than that of water. Optionally, the sensor can be a magnet, magnetic resonator, or accelerometer. In some embodiments, the sensor is adapted to be placed in regions potentially subject to scour and to sense a scour-related condition. The signal generator generates a wireless signal conveying data regarding the as-sensed scour-related. In some embodiments the sensor is the signal generator while a receiver of the wireless signal can include an antenna, a magnetometer, or an ultrasonic sensor. In some embodiments, the housing is conic and the magnetic object is offset from the center of gravity of the coupled sensor, signal generator and housing. | 05-10-2012 |
20130091939 | SENSORS FOR INTEGRATED MONITORING AND MITIGATION OF EROSION - Methods and systems for measuring erosion. Systems of various embodiments include a sensor adapted to be placed where earthen material is expected to move and to sense a condition related to that movement (for instance, the position of the sensor). The sensor includes a receiver for receiving a wireless signal (be it acoustic, magneto-inductive, etc.) from another sensor which conveys an identifier for the second sensor. The first sensor also includes a signal generator that generates a second (possibly wireless) signal conveying that identifier and its own identifier. Systems of some embodiments include a second receiver placed outside of the region. If desired, the sensor can determine the signal strengths of the signals that they receive from the other sensor and can convey an indication of the received signal strengths. Furthermore, some sensors include accelerometers, roll sensors, tilt sensors, yaw sensors, magnetometers, etc. | 04-18-2013 |
Patent application number | Description | Published |
20120230411 | Method and Apparatus of Transform Unit Partition with Reduced Complexity - Three block concepts are introduced in HEVC: coding unit (CU), prediction unit (PU), and transform unit (TU). The overall coding structure is characterized by the various sizes of CU, PU and TU in a recursive fashion. For transform processing in current HEVC, a hierarchy RQT (Residual Quad Tree) is used and the TU size is related to the CU size, but independent of the PU size. This results in high encoding complexity and also causes increased processing time to process the syntax of residual quad tree. Accordingly a modified transform unit partition with reduced complexity is disclosed. According to an embodiment, the TU size may be restricted to the minimum of PU width and height, except for a 2N×2N coding unit with the 2N×2N partition type. In another embodiment, the maximum TU size equals to maximum of PU width and height, and the minimum TU size equals to minimum of the PU width and height, except for a 2N×2N coding unit with the 2N×2N partition type. In yet another embodiment, the TU size is selected between 2N×2N and N×N for the 2N×2N, 2N×N, N×2N and N×N partition types. The syntax element, split_transform_flag, is used to indicate the selection of 2N×2N or N×N TU size when needed. Furthermore, a method with reduced complexity of selecting the best merge candidate for the 2N×2N CU merge mode is disclosed. The method relies on R-D cost associated with the motion vector of merge candidate to reduce required computation. | 09-13-2012 |
20140086323 | METHOD AND APPARATUS FOR CODING OF INTRA PREDICTION MODE - Embodiments according to the present invention configure the intra prediction mode candidates into multi-level MPM sets, which comprise at least a first-level MPM set and a second-level MPM set. Encoding or decoding a current intra prediction mode is based on the multi-level MPM sets, where one syntax element of the syntax information to be generated or decoded respectively is associated with evaluating the current intra prediction mode using the first-level MPM set. A method and apparatus for spectively is associated with evaluating the current intra prediction mode using the first-level MPM set. A method and apparatus for chroma intra prediction mode encoding and decoding are also disclosed. The chroma intra prediction mode set includes a Luma-based chroma prediction Mode (LM), a Direct Mode (DM) and four other modes. The codeword set comprises variable-length codewords and fixed-length codewords, and the fixed-length codewords are longer than the variable-length codewords. The variable-length codewords are used for the DM and LM, and the fixed-length codewords are used for the four other modes. | 03-27-2014 |
Patent application number | Description | Published |
20120304823 | METHOD FOR PREPARING SPONGE TITANIUM FROM POTASSIUM FLUOTITANATE BY ALUMINOTHERMIC REDUCTION - The invention provides a method for preparing sponge titanium from potassium fluotitanate by aluminothermic reduction, comprising the following steps: a reaction step: aluminum and zinc are mixed under a vacuum state, and the mixture is then reacted with potassium fluotitanate; a distillation step: KF, AlF | 12-06-2012 |
20120304824 | TECHNOLOGICAL METHOD FOR PREPARING SPONGE TITANIUM FROM SODIUM FLUOTITANATE RAW MATERIAL - The invention provides a technological method for preparing sponge titanium from sodium fluotitanate raw material, comprising the following steps: step A: placing aluminum in an airtight resistance furnace, evacuating, introducing inert gas into the resistance furnace, and heating the aluminum to obtain molten aluminum; step B: opening a reactor cover, adding a proper amount of sodium fluotitanate into the reactor, closing the reactor cover, detecting leakage, slowly heating the reactor to 150° C., evacuating and continuously heating the reactor to 250° C.; step C: introducing inert gas into the reactor, continuously heating the reactor to 900° C., and stirring uniformly; step D: opening a valve, adjusting the stirring speed, dripping the molten aluminum, and controlling the temperature of reaction in a range from 900 to 1000° C.; and step E: opening the reactor cover, removing a stirring device out of the reactor, and eliminating NaAlF | 12-06-2012 |
20120304825 | PROCESS FOR PRODUCING SPONGE TITANIUM - The present invention provides a process for producing sponge titanium, which includes the following steps: Step A: placing aluminum into a resistance furnace, vacuum pumping, introducing inert gas, heating to molten aluminum; Step B: opening a reactor cover, adding a proper amount of potassium fluotitanate to a reactor, leakage detecting after closing the reactor cover, slowly raising the temperature to 150° C., vacuum pumping, and continuously heating to 250° C.; Step C: introducing inert gas into the reactor, continuously raising the temperature to 750° C., stirring uniformly; Step D: opening a valve to adjust the stirring speed, adding molten aluminum drops, and controlling the reaction temperature to 750° C. to 850° C.; Step E: opening the reactor cover, removing a stirring device, eliminating the upper layer of KAlF | 12-06-2012 |
20120304826 | METHOD FOR PREPARING SPONGE TITANIUM FROM SODIUM FLUOTITANATE BY ALUMINOTHERMIC REDUCTION - The invention provides a method for preparing sponge titanium from sodium fluotitanate by aluminothermic reduction, comprising the following steps: a reaction step: aluminum and zinc are mixed under a vacuum state, and sodium fluotitanate is then added into the mixture for reaction; a separation step: the product resulting from the complete reaction stands still and is then introduced with inert gas, and NaF and AlF | 12-06-2012 |
20120321522 | ZERO POLLUTION RECOVERY SYSTEM FOR SAFELY PRODUCING ANHYDROUS FLUORINE HYDRIDE - The present invention provides a zero pollution recovery system for safely producing anhydrous fluorine hydride, comprising: a compartment, a reactor for producing fluorine hydride, and a water pool; the reactor is disposed in the compartment; the water pool is disposed at the bottom of the compartment; absorption hoods are respectively disposed above both ends of the reactor for absorbing fluorine hydride gas; at least two absorption towers mutually connected in series via pipes are disposed above the compartment; water pipes connected with the water pool are respectively disposed at the top and bottom of the absorption tower; and a cooler and a receiver connected with the water pool is disposed on the pipes. The present invention has the advantages of being able to control the range over which fluorine hydride can diffuse. | 12-20-2012 |
20130095020 | CYCLIC PREPARATION METHOD FOR PRODUCING TITANIUM BORIDE FROM INTERMEDIATE FEEDSTOCK SODIUM-BASED TITANIUM-BORON-FLUORINE SALT MIXTURE AND PRODUCING SODIUM CRYOLITE AS BYPRODUCT - A cyclic preparation method for producing titanium boride from intermediate feedstock sodium-based titanium-boron-fluorine salt mixture and producing sodium cryolite as byproduct, which comprises the steps: a) boric acid or boric anhydride is added with hydrofluoric acid and then with sodium carbonate solution for concentration and crystallization to generate sodium fluoborate; titanium-iron concentrate is added with hydrofluoric acid and then with sodium carbonate and sodium hydroxide to obtain sodium fluotitanate; B) the sodium fluoborate is mixed with the sodium fluotitanate, and the mixture reacts with aluminum to generate titanium boride and sodium cryolite; C) the sodium cryolite is sucked out and then fed into a rotary reaction kettle together with concentrated sulfuric acid, hydrogen fluoride gas as well as sodium sulfate and sodium aluminum sulfate are generated by reaction in the rotary reaction kettle, and the hydrogen fluoride gas is collected and then dissolved in water to obtain hydrofluoric acid aqueous solution; and D) the obtained hydrofluoric acid aqueous solution is recycled. | 04-18-2013 |
20130095021 | CYCLIC PREPARATION METHOD FOR PRODUCING TITANIUM BORIDE FROM INTERMEDIATE FEEDSTOCK POTASSIUM-BASED TITANIUM-BORON-FLUORINE SALT MIXTURE AND PRODUCING POTASSIUM CRYOLITE AS BYPRODUCT - A cyclic preparation method including the following steps: a) boric acid or boric anhydride is added with hydrofluoric acid and then with potassium sulfate for reaction to generate potassium fluoborate; titanium-iron concentrate is added with hydrofluoric acid and then with potassium sulfate for reaction to generate potassium fluotitanate; B) the potassium fluoborate is mixed with the potassium fluotitanate, and the mixture reacts with aluminum to generate titanium boride and potassium cryolite; C) the potassium cryolite is sucked out and then fed into a rotary reaction kettle together with concentrated sulfuric acid, hydrogen fluoride gas as well as potassium sulfate and potassium aluminum sulfate are generated by reaction in the rotary reaction kettle, and the hydrogen fluoride gas is collected and then dissolved in water to obtain hydrofluoric acid aqueous solution; and D) the obtained hydrofluoric acid aqueous solution and potassium sulfate aqueous solution are recycled. | 04-18-2013 |
20130095023 | METHOD FOR CYCLICALLY PREPARING MONOMER BORON AND COPRODUCING POTASSIUM CRYOLITE USING POTASSIUM FLUOBORATE AS INTERMEDIATE MATERIAL - A method for cyclically preparing monomer boron and coproducing potassium cryolite using potassium fluoborate as an intermediate material, which includes following steps: A) adding hydrofluoric acid to boric acid or boron oxide to enable a reaction to form fluoboric acid; B) adding a potassium sulphate aqueous solution to the fluoboric acid to enable a reaction to form the potassium fluoborate; C) putting the potassium fluoborate into a reactor, adding aluminium to react with the potassium fluoborate to form the monomer boron and potassium cryolite; D) extracting the potassium cryolite, sending the potassium cryolite to a rotary reaction kettle together with concentrated sulphuric acid to enable a reaction to form hydrogen fluoride gas and aluminium potassium sulphate, potassium sulphate, collecting the hydrogen fluoride gas and dissolving it into water to obtain the hydrofluoric acid; E) recycling the obtained hydrofluoric acid to Step A to leach the boric acid or boron oxide. | 04-18-2013 |
20130095024 | METHOD FOR CYCLICALLY PREPARING MONOMER BORON AND COPRODUCING SODIUM CRYOLITE USING SODIUM FLUOBORATE AS INTERMEDIATE MATERIAL - A method for cyclically preparing monomer boron and coproducing sodium cryolite using sodium fluoborate as an intermediate material, which includes the following steps: A) adding hydrofluoric acid to boric acid or boron oxide to enable a reaction to form fluoboric acid; B) adding a sodium carbonate aqueous solution to the fluoboric acid to enable a reaction to form the sodium fluoborate; C) putting the sodium fluoborate into a reactor, adding aluminium to react with the sodium fluoborate to form the monomer boron and sodium cryolite; D) extracting the sodium cryolite, sending the sodium cryolite to a rotary reaction kettle together with concentrated sulphuric acid to enable a reaction to form hydrogen fluoride gas and aluminium sodium sulphate, collecting the hydrogen fluoride gas and dissolving it into water to obtain the hydrofluoric acid; E) recycling the obtained hydrofluoric acid to Step A to leach the boric acid or boron oxide. | 04-18-2013 |
20130098206 | METHOD FOR CYCLICALLY PREPARING TITANIUM SPONGE AND COPRODUCING SODIUM CRYOLITE USING SODIUM FLUOTITANATE AS INTERMEDIATE MATERIAL - A method for cyclically preparing titanium sponge and coproducing sodium cryolite using sodium fluotitanate as an intermediate material, which includes the following steps: A) adding hydrofluoric acid to titaniferous iron concentrate to enable a reaction to form fluotitanic acid; B) adding sodium carbonate and sodium hydroxide to the fluotitanic acid to enable a reaction to form the sodium fluotitanate; C) putting the sodium fluotitanate into a reactor, adding aluminium to react with the sodium fluotitanate to form the titanium sponge and sodium cryolite; D) extracting the sodium cryolite and sending it to a rotary reaction kettle together with concentrated sulphuric acid to enable a reaction to form hydrogen fluoride gas and sodium sulphate, aluminium sodium sulphate; collecting the hydrogen fluoride gas and dissolving it into water to obtain a hydrofluoric acid solution; E) recycling the obtained hydrofluoric acid to Step A to leach the titaniferous iron concentrate. | 04-25-2013 |
20130098207 | METHOD FOR CYCLICALLY PREPARING TITANIUM SPONGE AND COPRODUCING POTASSIUM CRYOLITE USING POTASSIUM FLUOTITANATE AS INTERMEDIATE MATERIAL - A method for cyclically preparing titanium sponge and coproducing potassium cryolite using potassium fluotitanate as an intermediate material, which includes the following steps: A) adding hydrofluoric acid to titaniferous iron concentrate to enable a reaction to form fluotitanic acid; B) adding potassium sulphate to the fluotitanic acid to enable a reaction to form the potassium fluotitanate; C) putting the potassium fluotitanate into a reactor, adding aluminium to react with the potassium fluotitanate to form the titanium sponge and potassium cryolite; D) extracting the potassium cryolite and sending it to a rotary reaction kettle together with concentrated sulphuric acid to enable a reaction to form hydrogen fluoride gas and potassium sulphate, aluminium potassium sulphate; collecting the hydrogen fluoride gas and dissolving it into water to obtain a hydrofluoric acid aqueous solution; E) recycling the obtained hydrofluoric acid aqueous solution to Step A to leach the titaniferous iron concentrate. | 04-25-2013 |