baber/WOPTO huggingface dataset:
Patent WO-2019051991-A1 (WO)
Title: Integrated automatic sorting, transplanting, and replanting system for plug seedlings and implementation method
Inventor: LIU JIZHAN
IPC: A01G9/08
Filed: 2017-11-15
Abstract: An integrated automatic sorting, transplanting, and replanting system for plug seedlings and an implementation method. The system consists of a target plug tray conveying and positioning mechanism (1), a seedling abandoning box (2), a stand (3), a single-claw replanting mechanism (4), a multi-claw sorting and transplanting mechanism (5), seedling taking claws (6), a detection module (7), and a source plug tray conveying and positioning mechanism (8). The detection module (7) and the single-claw replanting mechanism (4) are respectively located behind and in front of a multi-claw movable vertical plane (H); during seedling taking and transferring by multiple claws, a seedling taking area (A), a detection area (B), a seedling abandoning area (C), and a seedling placing area (D) are sequentially passed through; the first row of holes of a source plug tray (10) in a feeding direction and the other holes thereof are respectively used as a single-claw replanting seedling sourcing area (F) and a multi-claw transplanting seedling sourcing area (G). By means of nonstop detection and sorting during multi-claw transplanting as well as zonal seedling supply in the same tray and master-slave coordinated operating of multi-claw sorting and transplanting and single-claw replanting, integrated, simple, and efficient operating is implemented where tray seedlings are transplanted in rows, are detected and sorted nonstop, and are transplanted and replanted at all times, such that the complex and inefficient defects of a set of sorting, transplanting, and replanting systems are avoided.
Patent WO-2018095392-A1 (WO)
Title: 有机混合物、组合物以及有机电子器件
Inventor: PAN JUNYOU
IPC: H01L51/50
Filed: 2017-11-23
Abstract: 本申请公开一种有机混合物，包括有机化合物H1和有机化合物H2，其中所述有机化合物H1具有电子传输性能，所述有机化合物H1的Δ((LUMO+1)-LUMO)≥0.1eV，且min((LUMO(H1)-HOMO(H2),LUMO(H2)-HOMO(H1))≤min(E T (H1),E T (H2))。所述有机化合物H1和所述有机化合物H2便于形成激基复合物，且具有平衡的电荷传输性质，所述有机化合物H1具有较高的对电子传输的稳定性，因而可有效提高相关电子器件的效率和寿命，为提高电子器件的整体性能提供一种行之有效的方案。
Patent WO-2019006968-A1 (WO)
Title: Warrantable task allocation system and method for privacy protected spatial crowdsourcing
Inventor: MAO RUI
IPC: H04L9/08
Filed: 2017-11-29
Abstract: Disclosed are a warrantable task allocation system and method for privacy protected spatial crowdsourcing, comprising an SC server, a cryptographic service provider, a spatial task requester and a worker, wherein the cryptographic service provider generates a key and uses a Paillier cipher code and an ElGamal cryptosystem; the spatial task requester establishes spatial tasks, and returns task locations to the SC server; the SC server encrypts the task locations, and each worker calculates the distance between the task locations and the position of the worker; the velocity of each worker is encrypted and sent to the SC server, and each worker calculates the travel time thereof, encrypts the travel time and sends the travel time to the SC server; the SC server calculates winning workers with the help of the cryptographic service provider, the cryptographic service provider encrypts a winner set containing a plurality of winners and returns same to the SC server; and the SC server broadcasts the encrypted task locations to all workers, and the winning worker arrives at an appointed position for performance of the task. By the invention, the privacy of two parties is protected in spatial crowdsourcing and the calculation cost is greatly reduced, which can ensure the tasks are accepted in a high probability.
Patent WO-2018103630-A1 (WO)
Title: 一株分泌抗巴龙霉素单克隆抗体杂交瘤细胞株c1及其应用
Inventor: XU LIGUANG
IPC: G01N33/543
Filed: 2017-12-05
Abstract: 一株分泌抗巴龙霉素单克隆抗体的杂交瘤细胞株C1及其应用，属于免疫化学技术领域。通过常规的细胞融合技术制备了一株鼠源的单克隆细胞株C1，已保藏于中国微生物菌种保藏管理委员会普通微生物中心，保藏号为CGMCC No. 12025。该细胞株分泌的单克隆抗体采用间接竞争酶联免疫法测定，对巴龙霉素及新霉素的IC  50 分别为0.61及2.43μg/L。对动物性食品中巴龙霉素及新霉素的回收率范围为64.56％-105.85％及54.08％–100.55％。为动物性食品中巴龙霉素残留的免疫检测提供了原料，具有实际应用价值。
Patent WO-2018126838-A1 (WO)
Title: Ensemble panneau d'affichage et son procédé de fabrication
Inventor: BAO XIAOMING
IPC: H04M1/02
Filed: 2017-12-07
Abstract: La présente invention concerne un ensemble panneau d'affichage (10) comprenant un support (12), un panneau d'affichage (14), une plaque de couverture (16) et un anneau décoratif (18). Le support (12) comprend une paroi inférieure (122) et une paroi latérale (124) pliée à partir de la paroi inférieure (122). Une épaisseur de la paroi latérale (124) est inférieure à une épaisseur de la paroi inférieure (122) pour former le support (12). Le panneau d'affichage (14) est fixé à la paroi inférieure (122) du support (12). La plaque de couverture (16) est disposée sur le panneau d'affichage (14). L'anneau décoratif (18) est disposé sur une extrémité supérieure de la paroi latérale (124) du support (12) à l'opposé de la paroi inférieure (122) du support (12) et est relié à un côté de la plaque de couverture (16).
Patent WO-2019119343-A1 (WO)
Title: Cell selection for infrastructure based networks
Inventor: FU MIAO
IPC: H04W36/00
Filed: 2017-12-21
Abstract: The disclosure provides a method, UE, and computer-readable medium to facilitate reconnection of a UE to an infrastructure based network such as a high speed train network. The UE may obtain a list of neighbor cells of a serving cell of the UE. The UE may determine based on the list of neighbor cells of the serving cell that the serving cell is a dedicated cell of an infrastructure based network. The UE may save the list of neighbor cells as a list of infrastructure neighbor cells including a plurality of dedicated cells. The UE may add the list of infrastructure neighbor cells to a priority list for cell search in response to determining that a connection to the infrastructure based network has been lost. The UE may connect to one dedicated cell of the plurality of dedicated cells in the list of infrastructure neighbor cells.
Patent WO-2019114035-A1 (WO)
Inventor: LI YAOLE
IPC: G02B6/38
Filed: 2017-12-27
Abstract: L'invention a trait à un connecteur de fibres optiques qui comprend un boîtier de cadre avant (2) et un ensemble ferrule (3). Le boîtier de cadre avant (2) est pourvu d'un trou d'installation (201) qui sert à installer l'ensemble ferrule (3). Cet ensemble ferrule (3) comporte une ferrule (301) et une poignée de queue (302), et la poignée de queue (302) inclut une partie tête de poignée de queue (303) et une partie de striction de poignée de queue (304). La partie tête de poignée de queue (303) enveloppe une extrémité de la ferrule (301). Une section transversale de cette partie tête de poignée de queue (303) est quadrilatérale, et la forme de section transversale du trou d'installation (201) est quadrilatérale et correspond à la forme de section transversale de ladite partie tête de poignée de queue (303). Le connecteur de fibres optiques présente une précision de connexion supérieure.
Patent WO-2019104831-A1 (WO)
Title: Projection screen fixing system and projection device
Inventor: FU JINJIANG
IPC: G03B21/56
Filed: 2018-01-04
Abstract: Provided in the present invention are a projection screen fixing system and a projection device. The projection screen fixing system comprises a screen frame, a projection screen, a screen strengthening part provided on the projection screen, and a flexible element connected to the screen strengthening part and to the screen frame. A fixing hole is provided on the projection screen. The screen strengthening part is at least partly made by employing a distensible material. The screen strengthening part can be fitted on the fixing hole by means of pliable distension. The present invention simplifies the problem with transporting a projection screen and is applicable in most projection screens.
Patent WO-2018218983-A1 (WO)
Inventor: ZHANG PENG
IPC: F24F13/28
Filed: 2018-01-30
Abstract: 一种壁挂式空调室内机，包括：罩壳（120），其顶部形成有进风口（121）；前面板（130），设置在罩壳（120）的前部；驱动装置（140），设置在罩壳（120）上，驱动装置（140）包括电机（141）、与电机（141）输出轴连接的齿轮（142）、与齿轮（142）啮合的弧形齿条（143）、导轨组件、第一连杆（144）和第二连杆（145），第一连杆（144）的第一端与弧形齿条（143）的第一端转动连接，第二连杆（145）的第一端与弧形齿条（143）的第二端转动连接；净化组件（150），与第一连杆（144）的第二端和第二连杆（145）的第二端分别转动连接，并由第一连杆（144）和第二连杆（145）带动可转动且可滑动地与导轨组件配合，以在前面板（130）内侧与进风口（121）内侧的位置之间运动，并且净化组件（150）运动至进风口（121）内侧时，完全遮蔽进风口（121），以对进入室内机的气流进行净化。
Patent WO-2019148470-A1 (WO)
Inventor: LIU YONG
IPC: G06F9/44
Filed: 2018-02-02
Abstract: 本申请公开了一种控制系统及其保护电路，该保护电路的输入端与中央处理芯片的输出端连接；保护电路的输出端与可编程逻辑芯片的输入端连接；保护电路的控制端与可编程逻辑芯片的反馈端连接；在可编程逻辑芯片加载程序完成后，保护电路的控制端从可编程逻辑芯片的反馈端接收到第二反馈信号，保护电路根据第二反馈信号和第一控制信号产生第二控制信号，可编程逻辑芯片接收到第二控制信号，根据第二控制信号停止接收程序。本申请能够避免由于中央处理芯片失效而导致可编程逻辑芯片再次加载程序，进而避免造成整个控制系统失效，保证作业安全。
Patent WO-2019136867-A1 (WO)
Inventor: ZHAN FUJUN
IPC: E02D29/045
Filed: 2018-04-12
Abstract: 一种单舱管廊（1），由顶板（102）、底板（101）和两侧侧板（103）拼装形成箱型结构，单舱管廊（1）的一块侧板（103）为直板，其余三块板都向外起拱；或两块侧板（103）为直板，顶板（102）和底板（101）向外起拱。还公开了一种拼舱式多舱地下管廊，由两个或者两个以上单舱管廊（1）沿水平方向并排排列而成，相邻单舱管廊（1）相邻侧板（103）为直板，整个管廊的顶板（102）和底板（101）以及最外侧单舱管廊（1）的外侧侧板（103）向外起拱。
Patent WO-2018210300-A1 (WO)
Title: 一种共享交通工具的模式切换方法、系统及装置
Inventor: LI GANG
IPC: H04L29/08
Filed: 2018-05-17
Abstract: 本申请涉及共享交通工具领域，尤其涉及一种共享交通工具的模式切换方法，包括步骤：周期性获取共享交通工具的电量，在电量充足时进入正常模式，反之进入超低功耗模式，其中，在进入超低功耗模式后报送位置信息和电量信息并进入休眠状态；周期性获取共享交通工具的网络状态，在网络正常时进入正常模式，反之判断是否处于超低功耗模式，若不处于超低功耗模式则周期性搜索网络，重新获取网络状态。本申请还涉及一种共享交通工具的模式切换系统及装置。本申请通过设计一种共享交通工具的模式切换方法、系统及装置，避免共享交通工具的电源电量耗光无法上报信息，或者由于网络中断不断搜索网络，导致电量消耗变大，影响共享交通工具的正常使用。
Patent WO-2018219155-A1 (WO)
Inventor: YAN BUYI
IPC: H01L51/48
Filed: 2018-05-17
Abstract: 本发明涉及一种钙钛矿太阳能电池组件，包括若干相互分隔的钙钛矿太阳能电池单体以及将各个分隔的钙钛矿太阳能电池单体连接起来的结构化区域，钙钛矿太阳能电池单体包括第一电极2、钙钛矿层3以及第二电极4，钙钛矿层3设置在第一电极2与第二电极4之间。本发明还涉及一种钙钛矿太阳能电池组件的制备方法，包括：(1)第一电极2的制备；(2)制备形成钙钛矿层3所需的第一类钙钛矿前驱体材料BX 2的薄膜；(3)把形成钙钛矿层3所需的第二类钙钛矿前驱体材料AX沉积到步骤(2)形成的BX 2的薄膜的表面；(4)第二电极4的制备；(5)第二电极4制备后的局部刻蚀。本发明提供一种利用两步法制备钙钛矿太阳能电池组件的方法，实现大面积太阳能电池组件的制备。
Patent WO-2018228153-A1 (WO)
Title: 相位跟踪参考信号的传输方法和传输装置、及其接收方法和接收装置
Inventor: LI HUI
IPC: H04W72/04
Filed: 2018-05-23
Abstract: 本公开提供一种相位跟踪参考信号的传输方法和传输装置、接收方法和接收装置。传输方法包括：发送关联端口信息和预编码信息至接收端；其中，关联端口信息包括每个相位跟踪参考信号 PT-RS 端口对应的解调参考信号 DMRS 端口组；预编码信息用于指示本次数据发送中每个 PT-RS端口所采用的预编码信息；且系统预定义预编码信息表示的 PT-RS 端口与 DMRS 端口的映射关系；根据映射关系和预编码信息，确定每个 PT-RS 端口所对应的目标子载波，将每个 PT-RS 端口映射至各自的目标子载波，进行相位跟踪参考信号传输。
Patent WO-2019237308-A1 (WO)
Title: Memory
Inventor: YANG WEN
IPC: G11C11/16
Filed: 2018-06-14
Abstract: The present application provides a memory, relating to the technical field of semiconductors, and can improve the integration density of the memory. A memory, each memory cell in a memory area comprising a transistor and an MTJ memory element; the bottom electrode of the MTJ memory element and the drain electrode of the transistor are electrically connected by means of a conductive structure; the memory area is provided with a plurality of wiring layers between the transistor and the MTJ memory element, and a dielectric layer is filled between each two adjacent wiring layers; the conductive structure comprises a first conductive part, and the first conductive part comprises a first metal wiring, a second metal wiring and a first through hole; the plurality of wiring layers comprise a first wiring layer, a second wiring layer and a third wiring layer; the first through hole penetrates through the dielectric layer between the first wiring layer and the second wiring layer and the third wiring layer; and a first connection channel is provided in the first through hole, the first connection channel is directly connected to a first metal wiring on the first wiring layer and a second metal wiring on the second wiring layer, and the first connection channel is not directly connected to the metal wiring on the third wiring layer.
Patent WO-2019019848-A1 (WO)
Title: Food packaging detection system and method
Inventor: SHI JIAN
IPC: B65B57/04
Filed: 2018-06-25
Abstract: A food packaging detection system and method. The system comprises a food packaging detection device, wherein the food packaging detection device is composed of a sensing device (100), a barcode recognition device (101) and a detection device (105), these being disposed adjacent to a production line and arranged in order, and the detection device (105) comprises a first detection unit (1051) and a second detection unit (1052). The method comprises: the sensing device (100) outputting a first trigger signal when sensing that a food packaging container (201) passes; and when the first trigger signal is received for the first time, starting to carry out barcode recognition on the food packaging container which has passed through, outputting a second trigger signal when recognition cannot be performed and detecting a corresponding food packaging container from the production line by using the first detection unit (1051), and after the production line is unexpectedly stopped and restarted, detecting the food packaging container on the production line by using the second detection unit (1052). The present invention improves the efficiency of removing unqualified food packaging containers, and ensures the accuracy of detection, and the overall system has low manufacturing costs and is easy to implement.
Patent WO-2019001516-A1 (WO)
Title: Wet sludge incineration method and fluidized bed incinerator
Inventor: YU GUOHAO
IPC: F23G5/30
Filed: 2018-06-28
Abstract: A wet sludge incineration method and a fluidized bed incinerator, mainly solving the problem of complex structure and high energy consumption in the prior art. Said wet sludge incineration method uses an underfeeding manner; instead of providing a pressure-bearing heat absorption surface in an incinerator, a part of wet sludge (3) is directly introduced into the incinerator for incineration, and combustion heat is mainly absorbed by the wet sludge (3) by means of water evaporation, and due to the rise in temperature of a solid and a gas which contains steam and combustion smoke. Said method saves construction costs, reduces the amount of sludge needing to be dried, and avoids the high energy consumption caused by a pretreatment of drying or filter pressing on entire wet sludge.
Patent WO-2020006662-A1 (WO)
Title: Self-terminating write circuit and method
Inventor: PAN YUE
IPC: G11C16/06
Filed: 2018-07-02
Abstract: Disclosed are a self-terminating write circuit and method for realizing self-termination of storage array circuits in different states by means of the same self-terminating write control circuit. The self-terminating write circuit of the present application comprises: an sense amplifier (201) and a control circuit (202), wherein the sense amplifier (201) is used for comparing a reference voltage or reference current output by a reference circuit (203) with the magnitude of a voltage or current output by a storage array circuit (204); and the control circuit (202) is used for generating a termination signal according to a comparison result and feeding back the termination signal to the storage array circuit (204), the termination signal being used for controlling the storage array circuit (204) to stop writing a P state or an AP state. Self-termination of writing is realized after the storage array circuit (204) completes state writing, thereby saving on the overhead area of a circuit and reducing the power consumption.
Patent WO-2019119774-A1 (WO)
Inventor: LI XINLIAN
IPC: H01L31/0463
Filed: 2018-07-03
Abstract: 本申请公开了一种薄膜太阳能电池及其制备方法。该薄膜太阳能电池包括一基底以及设置于基底的背电极层、光吸收层、缓冲层、窗口层及上电极层，所述光吸收层的表面包括陷光结构。
Patent WO-2019174163-A1 (WO)
Title: Self-service shopping cabinet, and self-service shopping system and method
Inventor: GUAN LUANJUN
IPC: G07F11/00
Filed: 2018-07-10
Abstract: A self-service shopping cabinet, and a self-service shopping system and method. The self-service shopping cabinet comprises: a cabinet body (1), a controller (2), a commodity weighing module (3), a GPRS communication module (4), a touch-control display apparatus (5), a cooling module (6), a locking apparatus (7), a temperature sensor (8), a vibration detection module (9) and an alarm module (10), wherein the commodity weighing module (3), the locking apparatus (7), the GPRS communication module (4), the touch-control display apparatus (5), the cooling module (6), the temperature sensor (8), the vibration detection module (9) and the alarm module (10) are all coupled to the controller (2). The method can solve the problems that the types of goods for sale in the field of self-service shopping are limited and the functions thereof are single.
Patent WO-2019237447-A1 (WO)
Inventor: LI XIAOMAN
IPC: H04N21/8549
Filed: 2018-07-12
Abstract: Procédé de configuration d'une vignette de vidéo et système, se rapportant au domaine technique du traitement de vidéo. Le procédé comporte les étapes suivantes: un groupement de services de codage et de décodage reçoit une demande de création de vignette véhiculant un paramètre de vignette d'une vidéo cible, et acquiert un fichier vidéo de la vidéo cible, le paramètre de vignette comportant au moins un identifiant de segment vidéo, une exigence de lecture en marche arrière de segment vidéo, et une vitesse de lecture de segment vidéo; le groupement de services de codage et de décodage génère, d'après le paramètre de vignette de la vidéo cible et son fichier vidéo, un fichier de vignette de vidéo de la vidéo cible; et le groupement de services de codage et de décodage renvoie le fichier de vignette de vidéo de la vidéo cible, de telle façon qu'une partie recevant le renvoi configure une vignette de vidéo de la vidéo cible d'après le fichier de vignette de vidéo. Le procédé selon l'invention permet à une vignette de vidéo de montrer efficacement et directement des caractéristiques de la vidéo entière, et permet à un utilisateur de déterminer avec exactitude le contenu d'une vidéo par l'intermédiaire de la vignette de vidéo.
Patent WO-2020029274-A1 (WO)
Inventor: QIN FRANK XIAOFENG
IPC: C12N15/13
Filed: 2018-08-10
Abstract: 提供了一种减毒棒状病毒表达载体的制备方法，用于制备嵌合表达针对特定靶点的抗体的减毒RNA病毒重组表达载体系统，该载体系统可以稳定表达针对特定靶点的相应抗体。
Patent WO-2019056905-A1 (WO)
Title: Feed network of base station antenna, base station antenna and base station
Inventor: XIAO WEIHONG
IPC: H01Q1/36
Filed: 2018-08-22
Abstract: Disclosed in the embodiments of the present application are a feed network of a base station antenna, a base station antenna and a base station. The feed network of a base station antenna provided by the embodiments of the present application comprises: a stripline cavity structure and a microstrip line circuit; the microstrip line circuit is provided on the front face of a reflection plate and is parallel with the reflection plate, the microstrip line circuit has internally a first conductor strip and a dielectric substrate, the microstrip line circuit is connected to the front face of the reflection plate, and the dielectric substrate is located between the first conductor strip and the reflection plate; the stripline cavity structure is provided on the back face of the reflection plate, the reflection plate being provided with a first avoidance hole; the stripline cavity structure has internally at least one second conductor strip; the stripline cavity structure is provided on the back face of the reflection plate, and the second conductor strip passes through the first avoidance hold to be connected to the first conductor strip in the microstrip line circuit. The embodiments of the present application further provide a base station antenna and a base station. The feed network of a base station antenna provided by the embodiments of the present application has a simple structure and is easy to assemble and manufacture.
Patent WO-2020019455-A1 (WO)
Inventor: ZHOU MEIWANG
IPC: B61C17/00
Filed: 2018-09-19
Abstract: 本发明公开了一种调车机车电传动动力包冷却系统，包括：冷却装置、直驱式电控硅油冷却风机、膨胀水箱、冷却水管路、增压空气管路；直驱式电控硅油冷却风机一侧与柴油机自由端输出轴直联，直驱式电控硅油冷却风机另一侧设置所述冷却装置，所述柴油机与所述冷却装置之间通过所述冷却水管路、增压空气管路连接，永磁发电机与冷却装置之间通过永磁发电机进水管路、永磁发电机出水管路连接，膨胀水箱与柴油机、冷却装置之间通过冷却水管路连接。本发明在调车机车冷却系统上采用了整体集成和直驱冷却技术，节省了空间尺寸和重量，提高了产品可维护性，创新了冷却空气进出风流动路线，降低了动力包间内空气温度，提高了电子元器件的使用寿命。
Patent WO-2020015206-A1 (WO)
Title: Gate driving circuit structure, display panel, and driving method for gate driving circuit structure
Inventor: SHAN JIANFENG
IPC: G09G3/36
Filed: 2018-10-11
Abstract: Disclosed are a gate driving circuit structure, a display panel, and a driving method for the gate driving circuit structure. In the display panel applied to gate driver on array technology, a shift register is additionally provided with a pull-down sub-circuit, and the pull-down sub-circuit is electrically coupled to a gate line and comprises a first switch, a second switch and a third switch, wherein a control end of the first switch may be electrically coupled to a previous-two-stage clock signal, and a first end of the first switch may be electrically coupled to a next-stage clock signal; a control end of the second switch is electrically coupled to a working point voltage signal, and a first end of the second switch is electrically coupled to a second end of the first switch; and a control end of the third switch is electrically coupled to a second end of the second switch, a first end of the third switch is electrically coupled to a gate scanning signal, and a second end of the third switch is electrically coupled to a preset low potential.
Patent WO-2020077672-A1 (WO)
Title: Method and device for training service quality evaluation model
Inventor: ZHAO RUI
IPC: H04L12/24
Filed: 2018-10-30
Abstract: Disclosed are a method and device for training a service quality evaluation model, wherein the method comprises: collecting machine performance data, network feature data and quality monitoring data of a service node according to a fixed period; determining a feature value based on the machine performance data and the network feature data; determining target quality data based on the quality monitoring data; using the feature value and the target quality data; and using a training set to construct a service quality evaluation model. In the present invention, by means of associating indicators, such as machine performance data and network feature data, with service quality through the feature engineering function of a deep neural network itself, combining a back-propagation algorithm for training, and fitting a nonlinear relationship therein, the time consumption of artificial feature engineering can be reduced, and the accuracy of service quality evaluation can also be improved.
Patent WO-2020006951-A1 (WO)
Inventor: ZHU XIAOWEI
IPC: D06F39/00
Filed: 2018-11-05
Abstract: 一种底座组件（100）和具有其的衣物处理装置，底座组件（100）包括：底座（10），底座（10）内限定有一侧开口的容纳腔（101）；抽屉（20），抽屉（20）可推拉地设于容纳腔（101）；水处理装置（30），水处理装置（30）设于抽屉（20）内且随抽屉（20）一起活动；连接件（50），连接件（50）可枢转地连接于底座（10），且连接件（50）与水处理装置（30）之间通过连接水管（60）连接，当拉动抽屉（20）时，水处理装置（30）适于带动连接件（50）转动。
Patent WO-2020082528-A1 (WO)
Inventor: CONG XIQIAO
IPC: C01B33/40
Filed: 2018-12-11
Abstract: L'invention concerne un procédé de préparation de talc calciné à faible coût et de blancheur élevée, comprenant : la préparation des matières premières suivantes en poids : 15 à 60 parties de magnésite ou de résidus de flottation de magnésite, 15 à 60 parties de silice et 0 à 20 parties de talc/laitier de talc ; et le mélange des matières premières, puis la mise en œuvre d'une calcination à 1000-1500 °C pendant 1 à 8 h et la mise en œuvre d'un refroidissement à 25-40 °C de manière à obtenir de la poudre de talc calciné / des morceaux de talc calciné. Le procédé utilise de la magnésite ou des résidus de flottation de magnésite bon marché et de faible qualité et de la silice pour préparer directement un produit de remplacement du talc calciné à l'aide d'un procédé de réaction en phase solide à haute température et a ainsi de faibles coûts de production.