-
121.发明申请公开(公告)号：US20200377971A1
公开(公告)日：2020-12-03
申请号：US16576765
申请日：2019-09-20
Applicant: University of Science and Technology Beijing
Inventor： Chengyan WANG
IPC: C22B3/00
Abstract: A method for preparing lead directly from a lead-containing material by a solid phase reaction, includes: step 1, adding the lead-containing material to be processed to the grinder, and adding a metal substance and water to the grinder, wherein an activity of the metal substance is larger than that of lead; the solid phase reaction between the lead-containing material and the metal substance is caused directly by the grinder through a mechanical force to obtain a reaction product; step 2, washing and filtering the reaction product to obtain the lead and a metal salt solution corresponding to the metal substance; step 3, performing a melt casting on the lead to obtain a crude lead, crystallizing the metal salt solution to obtain a metal salt corresponding to the metal substance.
-
公开(公告)号：US10808290B2
公开(公告)日：2020-10-20
申请号：US16052629
申请日：2018-08-02
Applicant: University of Science and Technology Beijing
Inventor： Rong Zhu , Guangsheng Wei , Kai Dong , Jingxin Zhao , Xuetao Wu , Tianping Tang , Xueliang Wang , Wenhe Wu , Shaoyan Hu , Yun Wang
Abstract: A clean and rapid smelting method in an electric arc furnace with full scrap steel, is suitable for smelting process of 30-300 t electric arc furnace with full scrap steel. In the smelting process of the electric arc furnace with full scrap steel, different kinds of mediums are injected by an injection lance which is installed inside refractory material of sidewall at the bottom of the electric arc furnace in different stages of smelting. Carburization is utilized in molten pool to accelerate melting down and improve carbon content of the molten pool at the stage of recarburizing and fluxing. A reaction in the molten pool is intensified at the stage of high efficiency dephosphorization and deep denitrogenation, to enhance efficient dephosphorization and deep denitrification of the reaction in the molten pool, thereby accelerating the smelting speed of the electric arc furnace with full scrap steel, improving effect of dephosphorization and denitrification.
-
123.发明申请公开(公告)号：US20200208701A1
公开(公告)日：2020-07-02
申请号：US16793938
申请日：2020-02-18
Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING , BEIJING TIANYISHANGJIA NEW MATERIAL CORP., LTD.
Inventor： Lin ZHANG , Xuanhui QU , Peng ZHANG , Peifang WU , Mingli QIN , Cairang SHIJIA , Jingwu CAO , Kangxi FU
Abstract: The present disclosure relates to a fiber-reinforced copper-based brake pad for high-speed railway train, and preparation and friction braking performance thereof. The fiber-reinforced copper-based brake pad for high-speed railway train comprises 80-98.5 wt. % metal powder, 1-15 wt. % non-metal powder and 0.5-5 wt. % fiber component. In addition, some components are added in a specific proportion to achieve optimal performance. The copper-based powder metallurgy brake pad is obtained by powder mixing, cold-pressing and sintering with constant pressure. The friction braking performance of the obtained brake pad is tested according to a braking procedure consisting of three stages, i.e., the first stage with low-pressure and low-speed, the second stage with high-pressure high-speed and the continuous emergency braking third stage with high-pressure and high-speed. The brake pad has advantages including higher and more stable friction coefficient, higher fade and wear resistance and slighter damage to brake disc at high speeds.
-
公开(公告)号：US20190048430A1
公开(公告)日：2019-02-14
申请号：US16052629
申请日：2018-08-02
Applicant: University of Science and Technology Beijing
Inventor： Rong ZHU , Guangsheng WEI , Kai DONG , Jingxin ZHAO , Xuetao WU , Tianping TANG , Xueliang WANG , Wenhe WU , Shaoyan HU , Yun WANG
CPC classification number: C21C7/0645 , C21C5/5264 , C21C7/0025 , C21C7/072 , C21C2005/5258 , Y02P10/143 , Y02P10/216
Abstract: A clean and rapid smelting method in an electric arc furnace with full scrap steel, is suitable for smelting process of 30˜300 t electric arc furnace with full scrap steel. In the smelting process of the electric arc furnace with full scrap steel, different kinds of medium is injected by an injection lance which is installed inside refractory material of sidewall at the bottom of the electric arc furnace in different stages of smelting; carburization is utilized in molten pool to accelerate melting down and improve carbon content of the molten pool at the stage of recarburizing and fluxing; reaction in the molten pool is intensified at the stage of high efficiency dephosphorization and deep denitrogenation, to enhance efficient dephosphorization and deep denitrification of the reaction in the molten pool, thereby accelerating the smelting speed of the electric arc furnace with full scrap steel, improving effect of dephosphorization and denitrification.
-
125.发明申请公开(公告)号：US20180187285A1
公开(公告)日：2018-07-05
申请号：US15690281
申请日：2017-08-30
Applicant: University of Science and Technology Beijing
Inventor： ZHANCHENG GUO , LONG MENG , LEI GUO , JINTAO GAO , YIWEI ZHONG , ZHE WANG , Kuiyuan CHEN
CPC classification number: C22B11/025 , B01D2201/30 , B03B1/02 , C22B7/004 , C22B7/005 , C22B7/04 , C22B9/023 , C22B11/12 , Y02P10/214
Abstract: A method and apparatus for step-by-step retrieving valuable metals from waste printed circuit board particles. Many kinds of metals, most existing in form of elementary substance or alloy, are contained in the waste printed circuit boards. Molten metals are separated selectively by supergravity separation at different temperatures to achieve the step-by-step recovery. Tin-based alloys, lead-based alloy, zinc aluminum alloy, crude copper and precious-metal-enriched residues with different metal contents are separated out and collected on the condition of different temperatures (T=200˜300° C., 330˜430° C., 700˜900° C., 1100˜1300° C.) and controlling the gravity coefficient (G=50˜1000) and separation time (t=2˜20 min) etc. Different metals or alloys can be separated quickly and efficiently and the residue concentration of precious metals can be obtained. The process is simple and low cost to provide an efficient way to recovery the enrichment of valuable metals from electronic wastes.
-
Patent Agency Ranking
126.发明授权Rectangular band-pass filter having recesses of less than one-quarter wavelength depth formed therein for fitting a dielectric insert with a superconductive film within the recesses 有权矩形带通滤波器，其具有形成在其中的小于四分之一波长深度的凹陷，用于将具有超导膜的电介质插入件与凹部公开(公告)号：US09537195B2
公开(公告)日：2017-01-03
申请号：US14581483
申请日：2014-12-23
Applicant: Institute of Physics, Chinese Academy of Sciences , Beijing Huarong Tianchuang Superconduct Technology Development Co., Ltd. , University of Science and Technology Beijing , O.Ya. Usikov Institute for Radiophysics and Electronics, National Academy of Sciences of Ukraine
Inventor： Liang Sun , Xu Wang , Jia Wang , Yun Wu , Yusheng He , Hong Li , Jiangming Huang , Sheng Luo , Valerii Skresanov , Oleksandr Barannyk , Volodymyr Glamazdin , Volodymyr Zolotarev , Myhaylo Natarov , Mykola Cherpak , Oleksandr Shubnyj
CPC classification number: H01P1/207 , H01P1/2016 , H01P5/1007
Abstract: A band-pass filter having a body, a rectangular waveguide, and a dielectric insert, the dielectric insert has a dielectric plate and a high temperature superconductive film in line with a plurality of rectangular windows of the same height. The waveguide has a×b cross-section, a being length of the long side walls and b the length of the short side walls. Each long side wall has a fixing groove at the central portion and a rectangular recess in the fixing groove. The dielectric plate has two ends in the fixing grooves and is symmetric with a perpendicular bisecting plane of the long side wall. The rectangular recess is symmetric to the perpendicular bisecting plane and has the same length as that of the waveguide, with its width w satisfying t
Abstract translation: 具有主体，矩形波导和电介质插入件的带通滤波器，电介质插入件具有与多个相同高度的矩形窗口对齐的电介质板和高温超导膜。 波导具有×b横截面，长侧壁的长度和b是短侧壁的长度。 每个长侧壁在中心部分具有固定槽，并且在固定槽中具有矩形凹槽。 电介质板在固定槽中具有两端，与长边壁的垂直平分平面对称。 矩形凹槽与垂直平分平面对称，并且具有与波导相同的长度，其宽度w满足t
-
公开(公告)号：US09499440B2
公开(公告)日：2016-11-22
申请号：US14419255
申请日：2014-03-13
Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING
Inventor： De an Pan , Shen gen Zhang , Ling jie Li , Bin Guo , Bo Liu
CPC classification number: C04B28/085 , C01F11/46 , C04B5/00 , C04B12/005 , C04B14/22 , C04B18/0445 , C04B18/0472 , C04B28/008 , C22B7/04 , C22C11/00 , Y02P40/165 , Y02W30/91 , Y02W30/94 , Y02W30/95 , C04B12/04 , C04B18/14 , C04B22/062 , C04B18/167
Abstract: An amount-reduction, harmless, disposal method for heavy metal waste gypsum (HMWG), which belongs to the technical fields of recycling economy and environmental protection. The HMWG used as raw material is subjected to processes of smelting fluxpreparation, lead smelting, fuming, and geopolymeric gelling, to realize amount-reduction, harmless and resources recycling utilization of heavy metal waste gypsum. The smoke containing sulfur dioxide produced in the smelting process is sent to the acid making system, and the produced dust with heavy metal is sent to the dedicated system for heavy mental disposing. The smoke dust produced in the fuming process is returned to the lead smelting system. The secondary HMWG produced in the acid making system would be returned to the preparation process of smelting flux. And the final products would be sulfuric acid and geopolymer material.
Abstract translation: 重金属废石膏（HMWG）的减量，无害化处置方法属于循环经济和环保技术领域。 用作原料的HMWG进行冶炼助熔，铅冶炼，发烟和地质聚合胶凝的工艺，实现重金属废石膏的减量，无害化和资源循环利用。 将冶炼过程中产生的含二氧化硫的烟气送至制酸系统，将重金属产生的粉尘送至专用系统进行重心处理。 在发烟过程中产生的烟尘返回到铅冶炼系统。 在制酸系统中生产的次级HMWG将返回到熔炼焊剂的制备过程。 最终产品将是硫酸和地质聚合物材料。
-
128.发明申请公开(公告)号：US20250075290A1
公开(公告)日：2025-03-06
申请号：US18513670
申请日：2023-11-20
Applicant: University of Science and Technology Beijing
Inventor： Shengen ZHANG , Hanlin SHEN , Bo LIU
Abstract: A multi-source solid waste recycling method based on composition design for calcium-silicon-aluminum-magnesium oxide includes collecting multi-source solid waste composition data; calculating and designing compositions of calcium oxide, silicon oxide, aluminum oxide and magnesium oxide units to obtain an inorganic non-metallic raw material with a target composition; and melts the raw material into slag, and uses carbon, metallic aluminum, aluminum nitride, aluminum carbide, silicon nitride and silicon carbide in the multi-source solid waste as reducing agents. The slag provides a high-temperature homogeneous reaction environment and serves as a “solvent” for reactants, the reducing agents reduce valuable metals in the slag to obtain an alloy, thereby achieving recovery of the valuable metals, and the slag is used for the inorganic non-metallic material in a high-value mode.
-
公开(公告)号：US12162065B2
公开(公告)日：2024-12-10
申请号：US18556167
申请日：2022-07-21
Applicant: University of Science and Technology Beijing
Inventor： Cheng Zhou , Dongpo Xuan , You Zhou , Tianliang Jiang , Biji Zhu , Wenhao Fan , Zhihao Zhang , Jianxin Xie
IPC: B22D11/103 , B22D11/06
Abstract: A thin metal strip continuous casting method using momentum flow distribution, comprising the steps of: adjusting the position of a flow distribution device (2), and starting a double-roller thin strip continuous casting apparatus; molten metal (3) forming a uniform sheet-shaped molten metal flow (4) having an initial momentum after the molten metal (3) passes through the flow distribution device; the sheet-shaped molten metal flow entering a molten pool (5) at a superheat degree of 50-100° C. and an initial velocity of 0.5-2 m/s, wherein the flow distribution device is spaced apart from the molten pool; under the action of the initial velocity of the molten metal and in the molten pool, forming a whirlpool, which is adjacent to surfaces of two cooling rollers and has a momentum stirring action; and completing the solidification of the molten metal under the momentum stirring action of the whirlpool along with the rotation of the two cooling rollers. In the method, a whirlpool, which is adjacent to surfaces of cooling rollers and has a momentum stirring action, is formed in a molten pool by means of the kinetic energy of molten metal, such that equiaxed crystals can be prepared when a superheat degree is as high as 50-100° C., and the proportion of equiaxed crystals can be increased to 100%, thereby refining crystal grains and alleviating segregation.
-
130.发明公开公开(公告)号：US20240261851A1
公开(公告)日：2024-08-08
申请号：US18290389
申请日：2022-05-10
Applicant: THE UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING , ZIBO CITY LUZHONG REFRACTORIES CO., LTD. , ZIBO LANGFENG HIGH TEMPERATURE MATERIALS CO., LTD.
Inventor： Junhong CHEN , Jisheng FENG , Yuanping JIA , Bin LI , Bo ZHU , Guangqi LI , Yutao GUO
IPC: B22D41/02 , C04B35/119 , C04B35/645
CPC classification number: B22D41/02 , C04B35/119 , C04B35/645 , C04B2235/3206 , C04B2235/3208 , C04B2235/3217 , C04B2235/3244 , C04B2235/5427 , C04B2235/5436 , C04B2235/656 , C04B2235/77 , C04B2235/9676
Abstract: The present application discloses a refractory material with the function of cleaning molten steel, a preparation method therefor and the use thereof. The material phase of the refractory material of the present application comprises one or more of CA6, CMA, corundum and ZrO2. The refractory material prepared by the present application has a high purity, good erosion resistance, good slag permeability resistance and high thermal shock stability, reduces the amount of refractory material eroded into molten steel, reduces the pollution of the molten steel, and can also give full play to the performance advantages of high-purity raw materials.
-
-
-
-
-
-
-
-
-
Search Results
231
records
(took 0.021 seconds)
