公开(公告)号：US10793932B1

公开(公告)日：2020-10-06

申请号：US16830304

申请日：2020-03-26

Applicant: University of Science and Technology Beijing

Inventor： Haiwen Luo ,  Guohui Shen

IPC: C21D9/46 ,  C22C38/12 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C21D6/00 ,  C22C38/00 ,  C21D8/02

Abstract: A method for manufacturing a lightweight steel plate with ultrahigh strength and high toughness includes, in percent by weight: 0.30-0.45 wt % C, 1.0-2.0 wt % Si, 2.0-4.0 wt % Al, 6.0-7.0 wt % Mn, 0.30-0.50 wt % V, 0.02-0.05 wt % Nb, 0.001-0.005 wt % B, N≤0.003 wt %, P≤0.015 wt %, S≤0.005 wt %, Fe, and inevitable impurities.

公开(公告)号：US20200308666A1

公开(公告)日：2020-10-01

申请号：US16830304

申请日：2020-03-26

Applicant: University of Science and Technology Beijing

Inventor： Haiwen LUO ,  Guohui SHEN

IPC: C21D9/46 ,  C22C38/12 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D8/02 ,  C21D6/00

Abstract: A method for manufacturing a lightweight steel plate with ultrahigh strength and high toughness includes, in percent by weight: 0.30-0.45 wt % C, 1.0-2.0 wt % Si, 2.0-4.0 wt % Al, 6.0-7.0 wt % Mn, 0.30-0.50 wt % V, 0.02-0.05 wt % Nb, 0.001-0.005 wt % B, N≤0.003 wt %, P≤0.015 wt %, S≤0.005 wt %, Fe, and inevitable impurities.

公开(公告)号：US20200280111A1

公开(公告)日：2020-09-03

申请号：US16499374

申请日：2017-10-17

Applicant: University of Science and Technology Beijing

Inventor： Chengyan WANG ,  Peng XING ,  Yongqiang CHEN

IPC: H01M10/54 ,  C22B3/00 ,  C22B7/00

Abstract: A method for recycling lead from spent lead-acid battery paste, relating to the technical field of hydrometallurgy. In the method, firstly a reducing agent, and a lead paste are added into a zinc chloride solution for leaching in a stirring mill to cause lead in the lead paste to enter the solution, a lead cementation is performed by using zinc in the leached solution, after the lead cementation, the electrolytic zinc is produced by controlling an electrodeposition on the zinc chloride solution for a short time, the reducing agent is zinc, lead or hydrogen peroxide, a part of the electrolytic zinc is returned as the reducing agent for leaching, the step of returning the electrolytic zinc as the reducing agent can be omitted when the lead or the hydrogen peroxide is used as the reducing agent.

公开(公告)号：US20200033496A1

公开(公告)日：2020-01-30

申请号：US16343407

申请日：2018-03-30

Applicant: University of Science and Technology Beijing ,  Zhong-an Academy of safety Engineering

Inventor： Zhenlei LI ,  Xueqiu HE ,  Dazhao SONG ,  Shengquan HE ,  Donghui LI

IPC: G01V3/12 ,  E21F17/18 ,  G01L5/00 ,  G01N27/72

Abstract: A monitoring and forewarning method for coal-rock dynamic disasters based on an electromagnetic radiation and an earth-sound monitoring includes the following steps: (1) calculating the weighted average value of research parameter P(t) during a time period according to the monitoring data collected by the electromagnetic radiation and the earth-sound monitoring system in real time; (2) calculating D(t), the deviation value of P(t); (3) calculating |D(t)| as the deviation threshold value, the average value of |D(t)| during period of normal mining of the working surface; (4) calculating DS, the number of times that D(t) is greater than |D(t)| in one day; (5) normalizing DS to obtain the monitoring and forewarning index ε; (6) forewarning the hazard state of dynamic disaster of the working surface in real time according to ε and forewarning method, determining hazard level.

公开(公告)号：US20190054521A1

公开(公告)日：2019-02-21

申请号：US16169570

申请日：2018-10-24

Applicant: University of Science and Technology Beijing

Inventor： Jingyuan Li ,  Mingfan Qi ,  Yulai Chen ,  Huiping Hong ,  Jianxin Xie

IPC: B22D11/16 ,  B22D11/00 ,  B22D11/124 ,  B22D11/22 ,  B22D17/20 ,  B22D25/06 ,  B22D30/00 ,  C22C1/04

Abstract: The present invention belongs to the field of metal processing and fabrication, and particularly relates to an apparatus for high-throughput screw caster of a multi-component gradient metal material from elongate materials, such as multi-component alloy pipes, rods, profiles, and other such materials, having in the lengthwise direction a continuous gradient distribution of chemical components. The apparatus includes an online powder flow-rate regulation system, a rotary feed system, a heating system, a heat insulation system, a motor drive system, a blank forming system and a control system. Due to the adoption of the above technical solution, the apparatus of the present invention is simple in structure, and easy to use and control.

公开(公告)号：US10150058B2

公开(公告)日：2018-12-11

申请号：US14829259

申请日：2015-08-18

Applicant: Princeton University ,  Tsinghua University ,  University of Science and Technology Beijing

Inventor： Howard A. Stone ,  Jiang Li ,  Haosheng Chen

IPC: B01D17/022 ,  B01D17/04 ,  B01L3/00 ,  C03C17/00 ,  C03C17/30 ,  B01J19/00 ,  B01F5/06 ,  B01F13/00

Abstract: Emulsion breaking and phase separation is achieved by droplet adhesion. An emulsion breaking device includes a channel having distinct adjacent zones with distinctly different surface wettability characteristics, namely, solvophilic and solvophobic surfaces. The device is positioned such that the upstream portion of the device is configured to be wetted by the continuous phase of the emulsion, and the downstream portion of the device is configured to be wetted by the dispersed phase of the emulsion. As the emulsion flows from the upstream zone to the downstream zone, the change in surface wettability characteristics promotes adhesion of the dispersed phase as the dispersed phase wets the surface of the downstream portion of the channel, which results in breaking of the emulsion. Subsequent collection of the broken emulsion in a collection vessel results in separation of the disparate phases to facilitate their recapture and recycling.

公开(公告)号：US20170359177A1

公开(公告)日：2017-12-14

申请号：US15542211

申请日：2015-02-13

Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING

Inventor： Yan ZHU ,  Ruyun YU ,  Ruiqi GUO ,  Xin WANG

IPC: H04L9/30 ,  H04L9/06

CPC classification number: H04L9/3026 ,  H04L9/0643 ,  H04L9/3033 ,  H04L9/3218

Abstract: A cryptographic decision-making of set membership is a method or system which make a secure decision-making for positive membership e∈S or negative membership e∉S in an unforgeable and non-repudiation way for any element e and a set S. The proposed method of the present invention comprises: acquire a set U={e1, . . . , en} and map each element ei in U into a random point vi in a cryptography space; acquire a set S={e′1, . . . , e′m}⊂U, determine a random point v′i corresponding to each element e′i in the set S, and construct a function ƒS(x) according to all random points v′i; introduce a random secret γ to generate ƒS(γ) by using the function ƒS(x), and produce a public parameter mpk according to the random secret γ; and generate the cryptographic representation of set S by using the function ƒS(γ) and the public parameter mpk. In the embodiments, we provide two kinds of cryptographic representations of set, including Poles-based Aggregation and Zeros-based Aggregation, to make the decision on positive membership ei∈S and negative membership ei∉S.

公开(公告)号：US20170297702A1

公开(公告)日：2017-10-19

申请号：US15467449

申请日：2017-03-23

Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING

Inventor： Wei He ,  YuNan Chen ,  Tong Lv ,  Yao Yu ,  ChangYin Sun

IPC: B64C33/02 ,  B64C13/16

CPC classification number: B64C33/02 ,  B64C13/16

Abstract: The present invention provides a method for controlling the oscillation of flapping-wing air vehicle, which comprises the following steps: calculating the kinetic energy, potential energy and virtual work of the system using the flexible wing with the two-degree of freedom as the research object; establishing system dynamics model based on the Hamilton's principle; setting the boundary control rate according to said system dynamics model wherein said boundary control rate includes F(t) and M(t), said F(t) is the inputted boundary control force, and said M(t) is the inputted boundary torque; and controlling the flexible wings according to the system dynamics model in combination with the boundary control rate. The present invention establishes the system dynamics model based on the Hamilton's principle, set the boundary control rate according to said system dynamics model, sufficiently considers the situation of distributed disturbance occurring at the boundary and effectively prevents the flexible wings deformation caused by the external disturbances.

公开(公告)号：US12264879B2

公开(公告)日：2025-04-01

申请号：US17585591

申请日：2022-01-27

Applicant: University of Science and Technology Beijing ,  Shandong Econ Energy Saving Technology Co., Ltd

Inventor： Yu Li ,  Changqing Yao

IPC: F27D17/10 ,  F27B9/12

Abstract: A kiln system is provided, including a drying section, a preheating section, a firing section, a soaking section, a cooling section, and a decarburization section arranged between the drying section and the preheating section. The decarburization section includes an ignition zone, a hot air combustion/pyrolysis zone, and a waste heat recovery pipeline. A heat source is introduced into the ignition zone so that the temperature of the ceramsite of the raw materials with heating values in the zone is 400° C. to 900° C. The hot air combustion/pyrolysis zone is configured for combusting or pyrolyzing carbon-containing materials and organic components in the raw materials with heating values in the ceramsite. The waste heat recovery pipeline is configured for discharging decarburization exhaust gas and recovering heat released after the raw materials with heating values in the ceramsite are combusted or pyrolyzed in the decarburization exhaust gas.

公开(公告)号：US12234521B2

公开(公告)日：2025-02-25

申请号：US18670631

申请日：2024-05-21

Applicant: Xuanhua Iron and Steel Group Co., Ltd. ,  University of Science and Technology Beijing ,  HBZX HIGH TECH CO., LTD.

Inventor： Hongbin Wang ,  Guangsheng Wei ,  Rong Zhu ,  Minghai Zhang ,  Jinlong Wang ,  Jianping Jia ,  Yongqiang Yang ,  Jianzhong Wang ,  Yunxiang Zhao ,  Xin Li ,  Ceng Li ,  Huan Chang

IPC: C21C7/072 ,  C21C5/52 ,  C21C7/00 ,  C21C7/06 ,  C21C7/064 ,  C21C7/10

Abstract: The application provides a method for controlling nitrogen in steelmaking by spraying hydrogen containing plasma, including: using a mixture of hydrogen rich gas and argon gas to generate hydrogen plasma for denitrification of molten steel during at least one of arc furnace smelting, ladle refining, VOD refining, and RH refining. The method for controlling nitrogen in steelmaking by spraying hydrogen containing plasma provided in the application can effectively remove nitrogen from the molten steel by spraying a mixture of argon gas and hydrogen rich gas into the molten steel through a hollow electrode and plasma torch, reducing electrode consumption and electricity consumption per ton steel, and also reducing arc radiation heat loss, improving heating rate, thereby shortening smelting time and reducing production costs.