公开(公告)号：US20190330980A1

公开(公告)日：2019-10-31

申请号：US16475138

申请日：2018-09-06

Applicant: University of Science and Technology Beijing

Inventor： Weiyao ZHU ,  Ming YUE ,  Dongxu MA ,  Ziheng ZHOU ,  Hongyan HAN ,  Zhiyong SONG ,  Wenchao LIU

IPC: E21B49/00 ,  G01N15/08

Abstract: A device and a method for evaluating a gas-water two-phase flow fracture conductivity of a fractured shale. The device includes a seepage system, an injection system, a data collecting and processing system and a three-axis shale core holder, wherein the seepage system is subjected to two stages including a water injection stage and a gas flooding stage. When using the device, firstly the initial permeability and initial mass of the shale sample are determined; the water influx test is performed by injecting water to the shale sample until flow rate of the water discharged from the shale core is stable, then the water injection is ended. After the drying device is installed, the shale sample is subjected to gas flooding, and the aqueous fracturing fluid discharged by the gas flooding is collected until the flow meter determines that the gas volume is stable, and then the gas flooding is ended.

公开(公告)号：US20190277942A1

公开(公告)日：2019-09-12

申请号：US16348508

申请日：2018-03-30

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

Inventor： Dazhao SONG ,  Xueqiu HE ,  Zhenlei LI ,  Menghan WEI ,  Quan LOU ,  Anhu WANG

IPC: G01S5/04 ,  G01V3/12

Abstract: A method of locating a coal-rock main fracture by an electromagnetic radiation from a precursor of a coal-rock dynamic disaster is provided. At least four groups of three-component electromagnetic sensors are arranged in the underground tunnels, and each group of sensors includes three directive antennas for receiving electromagnetic signals orthogonal to each other. The electromagnetic signals are collected by a monitoring host. The signals are ensured to be received by different sensors synchronously via an atomic clock. The direction of the magnetic field line is determined by performing a vector superposition on strengths of the three-component electromagnetic signals of each group of sensors. The planes of electromagnetic wave propagation perpendicular to the direction of the magnetic field line are determined accordingly. The location of the coal-rock fracture is determined by the intersection point of the planes of electromagnetic wave propagation determined by the multiple groups of sensors.

公开(公告)号：US20190153558A1

公开(公告)日：2019-05-23

申请号：US16252908

申请日：2019-01-21

Applicant: University of Science and Technology Beijing

Inventor： Haiwen LUO ,  Pengyu WEN

IPC: C21D9/46 ,  C21D8/02 ,  C21D6/00 ,  C22C38/54 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00

Abstract: A method for producing ultra-high strength martensitic cold-rolled steel sheet adopts pulsed ultra-rapid heating of cold-rolled martensitic steel sheets after smelting, solidification, hot rolling, billet or ingot casting, as well as conventional manufacturing processes such as hot continuous rolling and winding, pickling, and room temperature cold rolling. The steel sheets are rapidly heated at a heating rate of 100-500° C./s to a single-phase region of austenite, and then the samples are immediately water-cooled to obtain martensite structure without undergoing heat preservation or a very short holding time. The tensile strength of the martensitic steel is in the range of 1800-2300 MPa, and the total elongation can reach 12.3%. Compared with the continuous annealing product of the same martensitic steel, the tensile strength is increased by 700 MPa or more, and the maximum increase of total elongation is 6%.

公开(公告)号：US20190144962A1

公开(公告)日：2019-05-16

申请号：US16052640

申请日：2018-08-02

Applicant: University of Science and Technology Beijing

Inventor： Qingzhi YAN ,  Zhiyuan HONG

IPC: C21D8/00 ,  C21D6/00 ,  C22C38/32 ,  C22C38/28 ,  C22C38/24 ,  C22C38/22 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C22C38/26

Abstract: A method for preparing oxide dispersion strengthening F/M steel using smelting and casting process, belongs to the field of metal materials. The composition of the steel comprises: C: 0.08˜0.15%, Cr: 8.0˜14%, Mn: 0.45˜0.6%, W: 1.0˜2.5%, N: 0.05˜0.07%, Ta: 0.010˜0.20%, Ti: 0.02˜0.55%, Si: 0.10˜0.15%, V; 0.04˜0.5%, O: 30˜200 ppm, B

公开(公告)号：US10131995B2

公开(公告)日：2018-11-20

申请号：US14997290

申请日：2016-01-15

Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING

Inventor： Xiaogang Li ,  Chaofang Dong ,  Xuequn Cheng ,  Cuiwei Du ,  Kui Xiao

IPC: C09K15/30 ,  C23F11/00 ,  C23F11/10

Abstract: This disclosure relates to a preparation method of a low-pH controlled-release intelligent corrosion inhibitor. The low-pH controlled-release intelligent corrosion inhibitor comprises a hydrogel with low pH responsiveness and a corrosion inhibiting substance having the capacity of corrosion inhibition. That is, a corrosion inhibiting substance is wrapped in a low-pH sensitive hydrogel. The swelling degree of the pH sensitive hydrogel may be changed according to the amounts of monomers and crosslinking agents so as to control the releasing speed of the corrosion inhibiting substance. By the soaking experiment and the measurements of electrochemical polarization curves and alternating impedance spectra, the sensitive and long-lasting features of the low-pH controlled-release intelligent corrosion inhibitor are indicated. Therefore, the advantageous effects of this disclosure lies in that: 1) the system enables the releasing speed of the corrosion inhibiting substance to be controlled by pH; 2) the system enables long-lasting effect and high corrosion inhibition efficiency of the corrosion inhibiting substance; and 3) the system has broad applicability.

公开(公告)号：US09676030B2

公开(公告)日：2017-06-13

申请号：US13989230

申请日：2011-06-30

Applicant: Zhimeng Guo ,  Weiwei Yang ,  Ji Luo ,  Huiqin Cao ,  Cunguang Chen

Inventor： Zhimeng Guo ,  Weiwei Yang ,  Ji Luo ,  Huiqin Cao ,  Cunguang Chen

IPC: B22F3/02 ,  B22F3/04 ,  B22F3/12 ,  B22F3/14 ,  B22F9/22 ,  B22F3/10 ,  C22C33/02 ,  B22F3/20

CPC classification number: B22F3/02 ,  B22F3/04 ,  B22F3/10 ,  B22F3/12 ,  B22F3/14 ,  B22F3/20 ,  B22F9/22 ,  C22C33/0228

Abstract: The invention provides an industrial method for producing dispersion-strengthened iron-based materials at low cost and in large-scale. The industrial acid pickling waste solution is treated by spray roasting process after yttrium chloride is added. During the spray roasting process, the solution is atomized into fine droplets, the droplets are contacted with gas and dried into powders, which are heated in air to form metal oxides. The mixed powders of the metal oxides are reduced in hydrogen stream to obtain yttria dispersion-strengthened iron powders. High performance dispersion-strengthened iron materials are obtained by densifying the yttria dispersion-strengthened iron powders. The method has simple process and low cost, and is suitable for large-scale production due to the direct use of acid pickling waste solution from steel factory.

公开(公告)号：US20240383817A1

公开(公告)日：2024-11-21

申请号：US18504236

申请日：2023-11-08

Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING

Inventor： Zifu LI ,  Yaping LYU ,  Xuemei WANG ,  Xiaoqin ZHOU ,  Rui FENG ,  Xiuwei AO ,  Shikun CHENG

IPC: C05F3/00 ,  C05F17/60

Abstract: Disclosed are an integrated method and an integrated system for resource recovery of source-separated urine. The integrated method for resource recovery of the source-separated urine includes: mixing the source-separated urine with an alkali metal peroxysulphate to obtain a mixture, and subjecting the mixture to evaporation-concentration by heating to obtain condensed water and a liquid compound fertilizer, where the liquid compound fertilizer includes urea, a phosphorus salt, and a potassium salt.

公开(公告)号：US20240254051A1

公开(公告)日：2024-08-01

申请号：US18290398

申请日：2022-05-09

Applicant: ZIBO CITY LUZHONG REFRACTORIES CO., LTD. ,  THE UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING ,  ZIBO LANGFENG HIGH TEMPERATURE MATERIALS CO., LTD.

Inventor： Junhong CHEN ,  Jisheng FENG ,  Yuanping JIA ,  Bin LI ,  Bo ZHU ,  Guangqi LI ,  Yutao GUO

IPC: C04B35/44 ,  C04B35/645

CPC classification number: C04B35/44 ,  C04B35/645 ,  C04B2235/3208 ,  C04B2235/3222 ,  C04B2235/3244 ,  C04B2235/5436 ,  C04B2235/656 ,  C04B2235/77

Abstract: The present invention belongs to the technical field of refractory materials, and disclosed are a high-purity compact calcium hexa-aluminate-based refractory material, a preparation method therefor, and a working lining using the same. The mixing ratio is adjusted according to the chemical composition of the final product to contain raw materials containing CaO, Al2O3 and ZrO2, the mixing ratio enabling the ratio of the chemical composition CaO:Al2O3:ZrO2 calculated according to parts by mass to be 45.5-95.5%:2.0-8.4%:0-50%; and the chemical composition are placed into a high-temperature furnace and a mold for hot-pressing is carried out, the maximum temperature is 1550-1800° C., and the hot-pressing strength is 0.5-30 MPa. In the present invention, when no sintering agent is added, a hot-pressing sintering process is employed according to a proportion to obtain a high-purity compact calcium hexa-aluminate-based refractory material, and the refractory material has excellent resistance to molten steel erosion and thermal shock stability, and can be widely applied in metallurgy, building materials and petrochemical industries as well as other industries. The preparation method is scientific and reasonable, product purity is high, and the prepared refractory material product can increase a device operation period; in addition, production costs are reduced, and energy-saving and emission-reducing effects are achieved.

公开(公告)号：US20240246862A1

公开(公告)日：2024-07-25

申请号：US18290388

申请日：2022-05-09

Applicant: ZIBO CITY LUZHONG REFRACTORIES CO., LTD. ,  THE UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING ,  ZIBO LANGFENG HIGH TEMPERATURE MATERIALS CO., LTD.

Inventor： Junhong CHEN ,  Jisheng FENG ,  Yuanping JIA ,  Bin LI ,  Bo ZHU ,  Guangqi LI ,  Yutao GUO

IPC: C04B35/119 ,  B22D41/02 ,  C04B35/645

CPC classification number: C04B35/119 ,  B22D41/02 ,  C04B35/645 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3217 ,  C04B2235/3244 ,  C04B2235/5427 ,  C04B2235/5436 ,  C04B2235/656 ,  C04B2235/77 ,  C04B2235/9676

Abstract: Disclosed in the present invention are a corrosion-resistant refractory material, preparation method therefor, and the use thereof. In the corrosion-resistant refractory material, a material phase of the refractory material comprises corundum and one or more material phases selected from CA6, C2M2A14, CM2A8, and ZrO2. The refractory material has low a low amount of a high-temperature liquid phase, a uniform pore structure, and good thermal shock stability; can be widely used in steel-making production lines and also in the refractory linings of rotary kilns, and has good erosion resistance and low thermal conductivity, and the performance thereof is obviously superior to that of many existing refractory materials such as silico carbide-mullite bricks and magnesia-alumina spinel bricks.

公开(公告)号：US20240208861A1

公开(公告)日：2024-06-27

申请号：US18390620

申请日：2023-12-20

Applicant: University of Science and Technology Beijing

Inventor： Siqi ZHANG ,  Tong ZHAO ,  Huifen YANG ,  Wen NI ,  Zeping WU ,  Yue LI ,  Jia LI ,  Keqing LI ,  Pingfeng FU ,  Yunyun LI ,  Xiang CHEN ,  Yuhang LIU ,  Dongshang GUAN ,  Jiajia WANG ,  Qiwei SUN

IPC: C04B7/153 ,  C04B7/28 ,  C04B11/26 ,  C04B11/30 ,  C04B28/02 ,  C04B28/08 ,  C04B28/14 ,  C04B40/00

CPC classification number: C04B7/153 ,  C04B7/28 ,  C04B11/262 ,  C04B11/30 ,  C04B28/021 ,  C04B28/082 ,  C04B28/144 ,  C04B40/0046 ,  C04B2111/1037

Abstract: A low-cost four-element system cementitious material, a preparation method and an application thereof are provided by the present disclosure, and the cementitious material is used in the fields of mine cementing filling and building materials. The four-element system cementitious material includes the following raw materials in percentage by mass: 20-60% of water-quenched blast furnace slag, 10-40% of waste incineration bottom ash, 20% of pretreated waste incineration fly ash and the balance of desulfurization gypsum. The low-cost four-element system cementitious material is used to replace cement to prepare mine cementing filling materials, and is also used to prepare concrete materials for construction industry.