公开(公告)号：US20230002693A1

公开(公告)日：2023-01-05

申请号：US17854140

申请日：2022-06-30

Applicant: Kunming University of Science and Technology ,  Zhejiang Chengtai Chemical Machinery Co., Ltd.

Inventor： Yi MEI ,  Chi ZHAI ,  Yunxiang NIE ,  Jinlin HE ,  Huili LIANG

IPC: C10J3/84 ,  C01B25/027

Abstract: Disclosed is a phosphorus coal gasification reaction device for combined production of yellow phosphorus and syngas, including a stock bin, a mineral aggregate lock hopper, a phosphorous coal gasification reactor, a slag quench chamber and a slag lock hopper. In the phosphorous coal gasification reactor, a drying zone, a dry distillation zone, a combustion zone, a phosphate rock reduction zone, and a slag bath zone are formed from top to bottom. A gas product outlet communicating with the phosphorous coal gasification reactor is installed at a top of the phosphorous coal gasification reactor, two to eight fuel burners are symmetrically arranged on the combustion zone, and an auxiliary burner communicating with the slag bath zone is arranged at the bottom of the slag bath zone. The reactor device can improve the production capacity of the yellow phosphorus, and reduce the emission of CO2.

公开(公告)号：US11478672B2

公开(公告)日：2022-10-25

申请号：US16809685

申请日：2020-03-05

Applicant: Kunming University of Science and Technology

Inventor： Ping Ning ,  Bin Li ,  Liwei He ,  Zhang Lin ,  Xueming Liu

IPC: A62D3/36 ,  C22B7/04 ,  A62D3/37 ,  C22B34/32 ,  A62D101/40

Abstract: The present invention discloses a method for detoxifying chromium slag by using high sulfur coal. The method includes: sieving chromium slag into coarse-grained chromium slag and fine-grained chromium slag, air-drying and crushing both the coarse-grained chromium slag and the fine-grained chromium slag; separately mixing the crushed coarse-grained chromium slag and fine-grained chromium slag with the crushed high sulfur coal uniformly; adjusting pH values of a coarse-grained slag mixture and a fine-grained slag mixture to 8.0-11.0 and moisture content thereof to 12%-18%; conducting reduction on the treated coarse-grained slag mixture and fine-grained slag mixture, where the reduction temperature of the fine-grained slag mixture is 500-700° C., the reduction time of the fine-grained slag mixture is 10-30 min, the reduction temperature of the coarse-grained slag mixture is 800-1000° C., the reduction time of the coarse-grained slag mixture is 10-30 min; after the reduction, conducting water quenching, and discharging the product.

公开(公告)号：US11473171B1

公开(公告)日：2022-10-18

申请号：US17828063

申请日：2022-05-31

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Feng Liang ,  Zhipeng Xie ,  Zhenggang Tang ,  Da Zhang ,  Bin Yang

IPC: H05B7/22 ,  C22B59/00 ,  H05H1/48 ,  C22B9/20 ,  H05B7/20 ,  H05B7/06

Abstract: The invention discloses a method about the integration of the metallurgical purification of metallic gadolinium and the preparation of gadolinium oxide nanoparticles (GONPs) by arc plasma. The method includes the metallurgical purification and the nanoparticle preparation. Firstly, the gadolinium ingot and a tungsten rod respectively act as an anode and a cathode. After the arc furnace is evacuated and then is filled with a working atmosphere, impurities in the gadolinium ingot are removed in the form of volatilization to obtain purified gadolinium by the first arc discharge. Whereafter, the purified gadolinium and the tungsten rod are used as the anode and cathode. After the arc furnace also is evacuated and then also is filled with a working atmosphere, GONPs are obtained from the inner wall of the arc furnace though the second arc discharge. The metallurgical purification of metallic gadolinium and the preparation of GONPs were integrated by arc plasma.

公开(公告)号：US11370663B1

公开(公告)日：2022-06-28

申请号：US17548606

申请日：2021-12-13

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Feng Liang ,  Zhipeng Xie ,  Zhenggang Tang ,  Xiecheng Yang ,  Da Zhang ,  Minjie Hou ,  Yao Kang ,  Bin Yang ,  Yongnian Dai

IPC: C01B32/18 ,  H01M10/0525 ,  H01M4/583 ,  H01M10/54

Abstract: The present disclosure relates to a method for production of nitrogen-doped single wall carbon nanohorns from anode graphite of wasted lithium-ion batteries. The method includes the following steps: a first step: forming recycled graphite powder into graphite blocks; and, a second contact step: when the first step is completed, using a DC arc plasma device to produce the graphite blocks into N-SWCNHs.

公开(公告)号：US20220185672A1

公开(公告)日：2022-06-16

申请号：US17548606

申请日：2021-12-13

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： FENG LIANG ,  ZHIPENG XIE ,  ZHENGGANG TANG ,  XIECHENG YANG ,  DA ZHANG ,  MINJIE HOU ,  YAO KANG ,  BIN YANG ,  YONGNIAN DAI

IPC: C01B32/18 ,  H01M10/0525 ,  H01M10/54 ,  H01M4/583

Abstract: The present disclosure relates to a method for production of nitrogen-doped single wall carbon nanohorns from anode graphite of wasted lithium-ion batteries. The method includes the following steps: a first step: forming recycled graphite powder into graphite blocks; and, a second contact step: when the first step is completed, using a DC arc plasma device to produce the graphite blocks into N-SWCNHs.

公开(公告)号：US11332380B2

公开(公告)日：2022-05-17

申请号：US16820982

申请日：2020-03-17

Applicant: Kunming University of Science and Technology

Inventor： Ping Ning ,  Senlin Tian ,  Jianhong Huang ,  Yunjian Chen ,  Xuewei Hu ,  Yingjie Li

IPC: B01D53/50 ,  B01D53/80 ,  C01F7/06 ,  C01G49/06 ,  C22B3/06 ,  C22B3/22 ,  C22B21/00 ,  C01F7/066 ,  C01F7/0646

Abstract: The present invention discloses a method for aluminum-enhanced dealkalization of red mud and separation and recovery of aluminum and iron. The method includes: dissolving red mud in water, introducing excessive SO2, introducing O2 for aeration, and refluxing part of alkaline leachate after filtering; when pH of a red mud mixture decreases to below 3, washing and filtering the red mud mixture, adding NaOH to acidic leachate to adjust its pH to a strongly alkaline level, aging and filtering the leachate, treating filter residue to recover Fe2O3, and refluxing part of alkaline leachate after filtering to the red mud mixture; and adjusting pH of the remaining alkaline leachate after filtering to a weakly acidic level, and conducting filtering to recover aluminum.

公开(公告)号：US11293076B2

公开(公告)日：2022-04-05

申请号：US16822141

申请日：2020-03-18

Applicant: Kunming University of Science and Technology

Inventor： Ping Ning ,  Xueqian Wang ,  Lei Tao ,  Langlang Wang

IPC: B01D53/50 ,  B01D53/78 ,  B03B7/00 ,  C22B1/02 ,  C22B7/00 ,  C22B7/04

Abstract: The present invention discloses a method for preparing iron ore concentrates by recycling copper smelting slag tailings, and belongs to the technical field of metallurgy and tailings recycling. In the present invention, copper slag tailings obtained after copper pyrometallurgy and flotation and water are used as raw materials, and low-concentration sulfur dioxide flue gas is used as a leaching agent for leaching of metals such as iron, zinc, copper, arsenic, and silicon in the slag tailings; the leachate is purified step by step through processes such as replacement by metal iron powder and sulfide precipitation control, to separate zinc, copper, arsenic, etc.; a purified solution is mainly composed of FeSO4 or can be used for producing a ferric salt flocculant; obtained tailings are used to obtain iron ore concentrates through magnetic separation, and the obtained iron ore concentrates can be used for further producing ultra-pure iron ore concentrates.

公开(公告)号：US11123690B2

公开(公告)日：2021-09-21

申请号：US16701559

申请日：2019-12-03

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY ,  PINGXIANG HUAXING ENVIRONMENTAL PROTECTION ENGINEERING TECHNOLOGY CO., LTD.

Inventor： Ping Ning ,  Qiulin Zhang ,  Guangcheng Wei ,  Dehua Zhang ,  Jing Wang ,  Xin Liu ,  Huimin Wang ,  Bo Li ,  Shaoming Li ,  Bin Li

IPC: B01D53/86 ,  B01J35/04 ,  B01J23/889

Abstract: The present invention discloses a method and device for purifying CO from a flue gas and coupling-suppressing white fog, where the flue gas is introduced into a ceramic honeycomb carrier coated with a CO catalyst, sufficient O2 in the flue gas is utilized to generate CO2 from a low concentration of CO through catalytic oxidation, so as to achieve the purpose of purifying CO, and the flue gas is heated up by the heat released from the catalytic oxidation reaction to more than 110° C. and then discharged into the air, which meets the temperature requirement of coupling-suppressing white fog; the device includes a CO concentration sensor, a temperature sensor, a CO catalytic oxidation layer, an oxidation reaction tower, a desulfurized sintering flue gas, a packing layer I, a packing layer II, a chimney, and a solenoid valve II.

公开(公告)号：US10981204B2

公开(公告)日：2021-04-20

申请号：US16419767

申请日：2019-05-22

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Senlin Tian ,  Jianhong Huang ,  Xiangliang Liu ,  Yingjie Li ,  Xuewei Hu ,  Ping Ning

IPC: B09C1/00 ,  B09C1/08 ,  B01D53/14 ,  B01D53/18 ,  B09C1/06

Abstract: The present invention discloses a method and system for thermal desorption treatment of organic-contaminated soil and treatment of desorbed waste gas. The system includes a thermal incinerator, a desorption flue gas temperature regulating device, a thermal desorption reactor, a dust collector, a heat exchange/steam separator, an absorption reactor, a star-shaped unloader, and a soil cooler. An absorbent containing organic pollutants is used as a fuel, and subjected to thermal incineration to achieve the decomposition and harmless treatment of the organic pollutants; and high temperature flue gas generated by the incineration is used as a heat carrier for thermal desorption remediation of the organic-contaminated soil; and by means of the high solubility capability of fuel oil to organic matter, the fuel oil is used as an absorbent to absorb and purify the organic pollutants in desorbed waste gas, so that the gas is purified gas and up-to-standard discharge is achieved. The present invention achieves the thermal desorption of the organic pollutants, the absorption and purification of the pollutants in the desorbed waste gas, and the thorough decomposition of the organic pollutants; the fuel oil has both functions of the absorbent and the fuel, and the present invention has the advantages of short process, low energy consumption, simple equipment and low cost.

公开(公告)号：US10960391B2

公开(公告)日：2021-03-30

申请号：US16696773

申请日：2019-11-26

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Ping Ning ,  Qiulin Zhang ,  Tengxiang Zhang ,  Yaqing Zhang ,  Huimin Wang

IPC: B01J38/66 ,  C01B17/02 ,  C01B17/027

Abstract: The present invention discloses a method and system of recovering elemental sulfur and regenerating the catalyst for a sulfur-deposited catalyst, including immersing the sulfur-deposited catalyst in the ammonium sulfide solution, the leaching reaction under normal pressure and temperature, replacing the ammonium sulfide solution and immersing again for extraction for the same time; collecting the leachate of the two steps, conducting gas stripping of the elemental sulfur by adopting the high-temperature nitrogen gas, condensing the tail gas of gas stripping, subjecting to a purification treatment and then discharging, with the liquor condensate being the ammonium sulfide solution. Finally, the solid in the leachate is filtered, washed and dried after the gas stripping to obtain the elemental sulfur; and the washing and drying of catalysts that has been subjected to the two times of immersion and extraction obtain the regenerated catalysts.