Patents by Inventor Zhenfu LUO

Zhenfu LUO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11484913
    Abstract: Provided is a gas-solid fluidized bed dry beneficiation process using a beneficiation density gradient, including: in a dry beneficiation system of a gas-solid fluidized bed, selecting coarse particles and fine particles; placing the coarse particles at a bottom of the dry beneficiation system, and placing the fine particles above the coarse particles, wherein the coarse particles and the fine particles are separated under an initial condition; under an effect of a gas flow, the coarse particles and the fine particles being fluidized to form a high-density beneficiation region and a low-density beneficiation region, respectively, and the coarse particles and the fine particles being mixed at a contact interface to form an intermediate-density beneficiation region; and feeding minerals to be beneficiated from an upper portion of the dry beneficiation system to pass through the low-density beneficiation region, the intermediate-density beneficiation region, and the high-density beneficiation region in sequence.
    Type: Grant
    Filed: February 29, 2020
    Date of Patent: November 1, 2022
    Assignee: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
    Inventors: Yuemin Zhao, Jesse Zhu, Chenyang Zhou, Zhijie Fu, Zhenfu Luo, Chenlong Duan
  • Patent number: 11434444
    Abstract: The present invention is directed towards a process for upgrading lignite comprising: prior to production pre-assess the calorific value of the coal, by selecting a relational expression between a calorific value of lignite and a degree of metamorphism, a moisture content and an ash content thereof based on a ratio of the ash content to the moisture content, pre-assess the calorific value of the coal; combining a relational expression between a production cost and the ash content and moisture content to make a cost budget; determining degrees of deashing and drying; selecting and implementing a lignite ash reduction pretreatment process; and implementing dry sorting first and then drying. The upgrading process has high sorting efficiency, high drying efficiency and low production cost, and meets the requirement for the surface moisture of the raw coal in the dry sorting operation.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: September 6, 2022
    Assignee: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
    Inventors: Bo Zhang, Yuemin Zhao, Yadong Zhang, Guanghui Yan, Zhenfu Luo, Chenlong Duan, Liang Dong, Enhui Zhou
  • Publication number: 20220176411
    Abstract: Provided is a gas-solid fluidized bed dry beneficiation process using a beneficiation density gradient, including: in a dry beneficiation system of a gas-solid fluidized bed, selecting coarse particles and fine particles; placing the coarse particles at a bottom of the dry beneficiation system, and placing the fine particles above the coarse particles, wherein the coarse particles and the fine particles are separated under an initial condition; under an effect of a gas flow, the coarse particles and the fine particles being fluidized to form a high-density beneficiation region and a low-density beneficiation region, respectively, and the coarse particles and the fine particles being mixed at a contact interface to form an intermediate-density beneficiation region; and feeding minerals to be beneficiated from an upper portion of the dry beneficiation system to pass through the low-density beneficiation region, the intermediate-density beneficiation region, and the high-density beneficiation region in sequence.
    Type: Application
    Filed: February 29, 2020
    Publication date: June 9, 2022
    Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
    Inventors: Yuemin ZHAO, Jesse ZHU, Chenyang ZHOU, Zhijie FU, Zhenfu LUO, Chenlong DUAN
  • Publication number: 20210292672
    Abstract: The present invention is directed towards a process for upgrading lignite comprising: prior to production pre-assess the calorific value of the coal, by selecting a relational expression between a calorific value of lignite and a degree of metamorphism, a moisture content and an ash content thereof based on a ratio of the ash content to the moisture content, pre-assess the calorific value of the coal; combining a relational expression between a production cost and the ash content and moisture content to make a cost budget; determining degrees of deashing and drying; selecting and implementing a lignite ash reduction pretreatment process; and implementing dry sorting first and then drying. The upgrading process has high sorting efficiency, high drying efficiency and low production cost, and meets the requirement for the surface moisture of the raw coal in the dry sorting operation.
    Type: Application
    Filed: June 11, 2019
    Publication date: September 23, 2021
    Inventors: Bo ZHANG, Yuemin ZHAO, Yadong ZHANG, Guanghui YAN, Zhenfu LUO, Chenlong DUAN, Liang DONG, Enhui ZHOU
  • Publication number: 20210276018
    Abstract: Embodiments of the present disclosure provide a pressurized two-product dense-medium separation process for oil shale, and belongs to the field of oil shale industry, in particular to the processing and utilization of oil shale. This process includes: pre-screening a raw oil shale ore through a 25 mm screen; crushing an oversize product, mixing with an undersize product, and separating by a pressurized two-product dense-medium cyclone; and subjecting an underflow and an overflow of the pressurized two-product dense-medium cyclone to dewatering and medium draining respectively to obtain a concentrate and a tailing. The present disclosure has a simple process flow, high separation efficiency and low energy consumption and can reduce the cost of oil refining and achieve better economic benefits.
    Type: Application
    Filed: March 4, 2021
    Publication date: September 9, 2021
    Applicant: China University of Mining and Technology
    Inventors: Bo Zhang, Chenlong Duan, Enhui Zhou, Guanghui Yan, Zengqiang Chen, Zhenfu Luo, Zhenxing Zhang, Guangqing Zhu
  • Patent number: 9964357
    Abstract: Drying and separation vibrating fluidized bed for processing wet coal by high-temperature hot air. Wet coal is fed into a vibrating separation chamber connected to a hot air supply duct. The wet coal is vibrated as it is dried and is layered as heat and mass transfer occur between the high-temperature air and the wet coal particles. Hot air enters the bottom of separation chamber through a distribution plate that includes asbestos fiber cloth sandwiched between clamping plates. The wet coal is fed through a feeding distribution device that separates the coal pieces as they enter the separation chamber. After the coal is dried and layered, the heavy and light material exits the separation chamber through two discharge impellers.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: May 8, 2018
    Assignee: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
    Inventors: Yuemin Zhao, Xuliang Yang, Pengfei Zhao, Zhenfu Luo, Zengqiang Chen, Chenlong Duan, Shulei Song
  • Publication number: 20160369194
    Abstract: In the sorting bed, the material to be sorted enters into the pulsating hot air drying stage, and is dried and upgraded under the effect of air flow and high-temperature hot air, the material enters into the pulsating cold wind sorting stage under the effect of scraper conveyors which are parallely arranged up and down inside. The light products and heavy products sorted and layered are respectively conveyed to fine coal and gangue discharging outlets at both ends of the sorting machine. The float and hypostasis at the corresponding discharging ends are respectively discharged by light product discharging wheel and heavy product discharging wheel. At the discharging ends, the material is removed from the sorted light material and heavy material and the medium is purified and recycled to use through subsequent process. The dry sorted air containing vapor and dust is purified and recycled through a subsequent dust removal process.
    Type: Application
    Filed: January 14, 2015
    Publication date: December 22, 2016
    Inventors: Chenlong Duan, Yuemin Zhao, Liang Dong, Zhenfu Luo, Jie Zhao, Keji Lv
  • Publication number: 20160054056
    Abstract: A drying and separation integrated machine for a vibrating fluidized bed comprises a front rack (10), a rear rack (12), a separation bed (6), and a rotary plow feeder (1) disposed at the upper portion at the front end of the separation bed (6). The tail end of the separation bed (6) is provided with a waste-rock rotary plow feeder (14) and a fine-coal rotary plow feeder (8), the upper portion of the separation bed (6) is provided with a dust-removing air-induced hood (4), the bottom thereof is provided with an air distribution chamber (3), the upper portion of the air distribution chamber (3) is provided with an air distribution plate (15), and the front rack (10) and the rear rack (12) are connected to the separation bed (6) by a spring (17) and a spring support (16).
    Type: Application
    Filed: July 26, 2013
    Publication date: February 25, 2016
    Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
    Inventors: Yuemin ZHAO, Xuliang YANG, Pengfei ZHAO, Zhenfu LUO, Zengqiang CHEN, Chenlong DUAN, Shulei SONG