公开(公告)号：US20240085866A1

公开(公告)日：2024-03-14

申请号：US18462445

申请日：2023-09-07

Applicant: University of Science and Technology Beijing

Inventor： Qing LI ,  Fengqin LIN ,  Hui LI ,  Li WANG ,  Chengyong XIAO ,  Xu YANG ,  Jiarui CUI ,  Chunqiu WAN ,  Qun YAN ,  Yan LIU ,  Lei MIAO ,  Jin GUO ,  Boyu ZHANG ,  Chen HUANG ,  Yaming XI ,  Yuxuan LIN

IPC: G05B13/04

CPC classification number: G05B13/041

Abstract: The present disclosure provides a method and device for intelligent control of heating furnace combustion based on a big data cloud platform, which relates to the technical field of artificial intelligence control. The method includes: construction of big data cloud platform based on production and operation parameters of the heating furnace; identification of key factors in the production process of the heating furnace by using big data mining technology; independent deployment of traditional heating furnace combustion control systems based on the mechanism model; and integration of cloud platform big data expert knowledge base and the heating furnace combustion intelligent control system.

公开(公告)号：US20230368021A1

公开(公告)日：2023-11-16

申请号：US18183402

申请日：2023-03-14

Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING

Inventor： Yanping BAO ,  Ruixuan ZHENG

IPC: G06N3/08

CPC classification number: G06N3/08

Abstract: The invention is in the field of iron and steel metallurgy, specifically a method and system for determining the amount of alloy added during the converter tapping process. Given that the LSTM neural network has a strong ability to capture nonlinear relationships, the invention builds an alloy element yield prediction model based on the LSTM neural network. Because different alloy elements have different factors that affect their yield, that is, different model input variables, different LSTM models are established for training. Furthermore, the invention uses integer linear programming to combine the yield prediction results to determine the alloy addition amount. This method not only finds the optimal alloy proportioning scheme quickly, but it also improves the component hit rate and the stability of steel products in the converter steelmaking process, obtains the lowest total cost, effectively reduces alloying costs, and has a good application prospect.

公开(公告)号：US20230325637A1

公开(公告)日：2023-10-12

申请号：US18128015

申请日：2023-03-29

Applicant: North China University of Technology ,  University of Science and Technology Beijing

Inventor： Lifeng Zhang ,  Weijian Wang ,  Ying Ren ,  Jujin Wang ,  Binyu Lyu

IPC: G06N3/045 ,  C21C7/00

CPC classification number: G06N3/045 ,  C21C7/0006

Abstract: Provided is a method for determining a quantity of a calcium line fed into molten steel based on a minimum Gibbs free energy principle, which relates to an calcium treatment process of molten steel refining for iron and steel metallurgy. The method includes: establishing a connection with a database to read composition information and a temperature of the molten steel in an actual production process; calculating contents of inclusions in the molten steel according to the read composition information; calculating a required quantity of calcium of the molten steel to control the inclusions in a target area under a current condition; and calculating a length of the fed calcium line according to parameter information of the calcium treatment process and the required quantity of calcium of the molten steel. With the method, a scientific and reasonable guidance is provided for the calcium treatment process in the actual production process.

公开(公告)号：US11773025B2

公开(公告)日：2023-10-03

申请号：US17964973

申请日：2022-10-13

Applicant: University of Science and Technology Beijing

Inventor： Yanling Zhang ,  Zheng Zhao ,  Weifeng Zhang ,  Kan Yu ,  Yao Zhang

IPC: C04B35/26

CPC classification number: C04B35/2633 ,  C04B35/2683 ,  C04B2235/3208 ,  C04B2235/3274 ,  C04B2235/6583

Abstract: Provided is a red mud-based composite calcium ferrite and a preparation method and use thereof. The preparation method of the red mud-based composite calcium ferrite includes the following steps: mixing red mud and a calcium source, and roasting an obtained mixture in an oxygen-containing atmosphere to obtain the red mud-based composite calcium ferrite; where the calcium source is selected from the group consisting of lime and calcium carbonate. In the present disclosure, the composite calcium ferrite is prepared using a solid waste red mud, with a greatly reduced cost of raw materials; on the other hand, compared with traditional calcium ferrite, the composite calcium ferrite mainly has phase structures of CaFe2O4, Ca2FeAlO5, and Ca2Fe2O5. Therefore, the composite calcium ferrite has a lower melting point, a higher lime dissolution efficiency, and better fluxing and dephosphorization effects during primary smelting and refining of molten steel, and has broad prospects for use in industry.

公开(公告)号：US11685966B2

公开(公告)日：2023-06-27

申请号：US16634909

申请日：2018-09-19

Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING ,  BOEING (CHINA) CO., LTD.

Inventor： Shengen Zhang ,  Bo Liu ,  Rui Lin

IPC: C22C1/02 ,  B22C9/08 ,  B22D21/00 ,  B22D43/00 ,  C22B21/00 ,  C22B21/06 ,  C22C1/03

CPC classification number: C22C1/026 ,  B22C9/086 ,  B22D21/007 ,  B22D43/00 ,  C22B21/0007 ,  C22B21/0092 ,  C22B21/066 ,  C22C1/03

Abstract: The present invention relates to techniques for producing 2024 and 7075 aluminum alloys by recycling waste aircraft aluminum alloys, which belong to technical fields for circular economy. The present invention develops techniques for obtaining the 2024 and 7075 aluminum alloys by subjecting waste aircraft aluminum alloys as raw materials to pretreatment, smelting, impurity removal, melt ingredient assay, ingredient adjustment, refining, and casting. Through utilizing the waste package aluminum alloys and the waste aluminum pop-top cans to adjust the ingredients, the waste aircraft aluminum alloys would be recycled at a lower cost without downgrading. The present invention has some advantages, such as low cost, and applicability for industrial production, as well as prominent economic benefit.

公开(公告)号：US11648608B1

公开(公告)日：2023-05-16

申请号：US17897257

申请日：2022-08-29

Applicant: University of Science and Technology Beijing

Inventor： Qing Liu ,  Leilei Zou ,  Jiangshan Zhang ,  Huisheng Wang ,  Biao Tao

IPC: B22D11/22 ,  C21D6/02 ,  B22D11/00

CPC classification number: B22D11/225 ,  B22D11/001 ,  C21D6/02

Abstract: A secondary cooling control method for reinforcing surface solidification structure of microalloyed steel continuous casting bloom includes: in situ observing precipitation behavior of secondary phase particles of the microalloyed steel, and determining a concentrated precipitation temperature range; cooling the microalloyed steel at different cooling rates, obtaining a particle size and a volume fraction of the secondary phase particles of the microalloyed steel at different cooling rates; determining an optimal average cooling rate; determining an optimal average cooling rate r; determining an optimal average cooling rate; and determining an optimal average cooling rate range through intersection of the three optimal average cooling rates whereby the continuous casting secondary cooling is optimized. The present invention can enhance the surface solidification structure of continuous casting bloom and reduce surface and subsurface cracks of the microalloyed steel continuous casting bloom.

公开(公告)号：US11567230B1

公开(公告)日：2023-01-31

申请号：US17679137

申请日：2022-02-24

Applicant: University of Science and Technology Beijing

Inventor： Dazhao Song ,  Xueqiu He ,  Menghan Wei

IPC: G01V3/12 ,  G01V3/38 ,  G01V3/165

Abstract: A direction-finding and positioning system of electromagnetic emission of coal or rock fracture includes a three-axis electromagnetic sensor array, a signal acquisition module and a direction-finding and positioning terminal; the three-axis electromagnetic sensor array is composed of at least four three-axis electromagnetic sensors configured to synchronously sense magnetic field strength in three-axis direction based on a tunnel magneto resistance technology, and obtain a real magnetic field vector in space by measuring; the signal acquisition module is configured to acquire magnetic field vector variable information of multiple measuring points in real-time, and after extracting magnetic field vector variable parameters, transmitting the magnetic field vector variable parameters to the direction-finding and positioning terminal; the direction-finding and positioning terminal is configured to perform direction-finding and positioning calculations according to the magnetic field vector variable parameters received, and performing a three-dimensional dynamic visual display to positioning results, positioning time, and positioning coordinates.

公开(公告)号：US20220325368A1

公开(公告)日：2022-10-13

申请号：US17440648

申请日：2020-08-11

Applicant: University of Science and Technology Beijing

Inventor： Rong ZHU ,  Weifeng LI ,  Guangsheng WEI ,  Chao FENG ,  Kai DONG ,  Runzao LIU ,  Yun ZHOU ,  Qiang RUAN ,  Guoli WEI ,  Deyong WANG ,  Qingde ZHU ,  Zhiguo HAN

IPC: C21C5/35 ,  C21C7/00

Abstract: There is provided a method of dynamic control for a bottom blowing O2—CO2—CaO converter steelmaking process. In the process, O2 is adopted as a top blowing gas, a mixed gas O2+CO2 is adopted as a bottom blowing carrier gas to inject lime powders into the converter from a bottom blowing tuyere. The ingredients of the molten steel in the converter steelmaking process are predicted based on the conservation of matter, in combination with the ingredient data of charged molten iron, the ingredient data of the converter gas in the converter blowing process, and working conditions of the bottom blowing device. The top blowing oxygen amount, the bottom blowing gas ratio and the flow rate of lime powder are dynamically adjusted stage by stage according to requirements for target ingredients at the end point of blowing.

公开(公告)号：US11371344B2

公开(公告)日：2022-06-28

申请号：US16620657

申请日：2018-09-21

Applicant: University of Science and Technology Beijing

Inventor： Weiyao Zhu ,  Zhiyong Song ,  Ming Yue ,  Yunfeng Liu ,  Zhen Chen ,  Dongxu Ma ,  Wenchao Liu ,  Qian Qi

IPC: E21B49/02 ,  E21B43/26 ,  G01V99/00 ,  G01N3/08

Abstract: A method for identifying a medium structure coupling and a fracture network morphology of a shale gas reservoir includes the following steps. Firstly, performing a fracturing test on shale cores by using a modified Brazilian disc test and categorizing the fracture network morphology. Secondly, performing a shale matrix-fracture structure and stress sensitivity test on the shale cores having different fracture network morphology. After that, determining a stress sensitivity constant of different fracture network morphology according to indoor core data and finally preparing an identification chart of the fracture network morphology based on an indoor core stress sensitivity test combined with a production practice. The identification chart can be applied to an actual fracturing well, and the fracture network morphology is directly identified by a real-time effective stress and a normalized flow.

公开(公告)号：US20220140961A1

公开(公告)日：2022-05-05

申请号：US17138949

申请日：2020-12-31

Applicant: University of Science and Technology Beijing

Inventor： Haijun ZHANG ,  Xiangnan LIU ,  Keping LONG

IPC: H04L5/00 ,  H04W72/04 ,  H04W72/12

Abstract: A bandwidth part (BWP) and power scheduling method and apparatus for indoor terahertz are provided. The BWP and power scheduling method uses an intelligent reflecting surface (IRS) and a non-orthogonal multiple access (NOMA) to compensate for a shortcoming, wherein terahertz waves are not suitable for an indoor transmission, convert an indoor environment of an IRS-assisted terahertz propagation into a channel model, and convert an optimal wireless resource scheduling in an indoor IRS-assisted terahertz system into a functional optimization design with random constraints. Policies and corresponding actions are trained by using a proximal policy optimization (PPO) to schedule a power and a BWP. An actor part generates continuous a power scheduling, and a critic part generates a discrete BWP scheduling.