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公开(公告)号：US20220324739A1
公开(公告)日：2022-10-13
申请号：US17349029
申请日：2021-06-16
Applicant: Kunming University of Science and Technology
Inventor： Guangjin Wang , Chengliang Zhang , Xiangyun Kong , Mingyu He
Abstract: The invention relates to a tailings settling-dewatering-solidifying device and an experimental method thereof, which falls into the technical field of mine engineering and mine geotechnical engineering, comprising a tailings settling device including a water tank, charging barrels I and II, and a reaction tank made of a transparent material, a dewatering device including an intelligent type controller, a circular base, a gas cylinder, a permeable stone, a piston, a metal rod and a water return barrel, a solidifying device including a charging barrel III and a tailings barrel, a stirring system including a stirrer, a rotary shaft and an electric motor, a dynamic real-time monitoring system including a high-definition electronic camera and a computer, and a three-layer framework. Through integration of tailings settling-dewatering-solidifying, the device can effectively improve tailings treatment efficiency, facilitate data collection and analysis, adjust medicament concentration in real time, meet enterprises' requirements, and reduce enterprise cost.
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公开(公告)号：US20220281747A1
公开(公告)日：2022-09-08
申请号：US17738710
申请日：2022-05-06
Applicant: Kunming University of Science and Technology
Inventor： Yi MEI , Yuanzhi ZHU , Yunxiang NIE , Ping LONG , Delong XIE
Abstract: A total heat energy recovery system for furnace-process phosphoric acid is disclosed by the present disclosure, and relates to the technical field of phosphorus chemical industry. The system comprises a phosphorus burning tower, a hydration tower, an absorption tower, a Venturi tube, a demister, an induced draft fan, a deaerator, an economizer, a dilute acid circulating tank, a phosphoric acid pump, and a feedwater pump. In consideration of the whole process system, fresh soft water is deoxidized after being heated by an upper head of the phosphorus burning tower and a gas guide tube, and the deoxidized water is then pumped into the economizer by a high-pressure pump to recover the heat of the hydration tower and then enters a steam pocket of the phosphorus burning tower to generate medium-high pressure steam. Therefore, unified recovery of the heat of a furnace-process phosphoric acid device is achieved, the medium-high pressure steam is generated, the effective energy is improved, a circulating cooling tower of the furnace-process phosphoric acid device is omitted, and the production system is efficient, energy-saving, environment-friendly, and green.
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公开(公告)号：US20220154347A1
公开(公告)日：2022-05-19
申请号：US17419250
申请日：2019-11-12
Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： JING FENG , FUSHUO WU , QI ZHENG , KAILONG YANG , CHAO LI , PENG SONG , XIAOYU CHONG , ZHENHUA GE , LIN CHEN , JUN WANG
Abstract: The present disclosure belongs to the field of preparation technology and provides an ultralimit alloy and a preparation method therefor. The ultralimit alloy comprises an alloy matrix. A bonding layer and a ceramic layer are successively deposited on a surface of the alloy matrix. The alloy matrix includes one of a magnesium alloy matrix, an aluminium alloy matrix, a titanium alloy matrix, an iron alloy matrix, a nickel alloy matrix, a copper alloy matrix, a zirconium alloy, and a tin alloy. For an ultralimit magnesium alloy, an ultralimit aluminium alloy, an ultralimit nickel alloy, an ultralimit titanium alloy, an ultralimit iron alloy and an ultralimit copper alloy, the bonding layer is a composite bonding layer, the ceramic layer is a composite ceramic layer, and the outside of the composite ceramic layer is further successively deposited with a reflecting layer, a catadioptric layer, an insulating layer and a carbon foam layer.
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公开(公告)号：US11331657B2
公开(公告)日：2022-05-17
申请号：US16722936
申请日：2019-12-20
Applicant: Kunming University of Science and Technology
Inventor： Ping Ning , Xueqian Wang , Qi Wang , Langlang Wang , Qiang Ma , Yingjie Zhang
Abstract: The present invention discloses a method of preparing a catalyst for low-temperature synergistic catalytic purification of NOx and HCN in a flue gas, and the use thereof. Citric acid is dissolved in ethanol to obtain a citric acid/ethanol solution; tetrabutyl titanate is added, mixed uniformly to obtain a tetrabutyl titanate-citric acid/ethanol solution; glacial acetic acid is added dropwise to react for 30-40 min to obtain a solution A; the metal salt solution was added dropwise into the solution A, mixed uniformly and added with nitric acid, ammonium hydroxide is added dropwise to adjust the pH value, and the temperature is raised at a constant speed to obtain a gel B; dried and then then baked at a temperature of 300-500° C. for 3-4 h, cooled in the furnace, pulverized, tableted and sieved to obtain the catalyst for the low-temperature synergistic catalytic purification of NOx and HCN in the flue gas.
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15.发明申请公开(公告)号：US20220144705A1
公开(公告)日：2022-05-12
申请号：US17418214
申请日：2019-11-14
Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： JING FENG , LIN CHEN , XIAOYU CHONG , JUN WANG
IPC: C04B35/495 , C04B35/50 , C04B35/626 , C04B35/645
Abstract: The present disclosure discloses a rare earth tantalate ceramic resisting corrosion of a low melting point oxide. A general chemical formula of the ceramic is RETaO4. A method for preparing the ceramic includes: weighing RE2O3 powder and Ta2O5 powder and adding to a solvent to mix, and ball milling the mixed solution with a ball mill to obtain powder A; drying the powder A, and sieving the powder A for a first time to obtain powder B; placing the powder B in a mold for compaction, pre-sintering the powder B to form a block C, cooling the block C to room temperature, grounding the block C with a grinder, and sieving the block C for a second time to obtain powder D; and sintering the powder D to obtain the rare earth tantalate ceramic. The ceramic has high density and strong corrosion resistance to low melting point oxides.
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Patent Agency Ranking
公开(公告)号：US20220106234A1
公开(公告)日：2022-04-07
申请号：US17429529
申请日：2019-11-12
Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： JING FENG , YUNXUAN ZHOU , XIAOYU CHONG , PENG WU , LIN CHEN , JUN WANG
IPC: C04B35/495 , C04B35/64 , C04B35/626
Abstract: The present disclosure provides a high-entropy rare earth-toughened tantalate ceramic. The ceramic is prepared by sintering Ta2O5 powder and x types of different RE2O3 powder, 4≤x≤9, and the molar ratio of the RE2O3 powders is 1. RE2O3 powder and Ta2O5 powder having the molar ratio of RE to Ta being 1:1 are weighed, a solvent is added for mixing, and ball milling is performed by a ball mill to obtain mixed powder M; the powder M is dried at a temperature of 650-850° C. for 1.5-2 h to obtain dried powder; the powder is sieved to obtain powder N, the powder N is placed in a mold for first pressing to obtain a rough blank, and the rough blank is then pressed for the second time to obtain a compact blank; the compact blank is sintered to obtain the high-entropy rare earth-toughened tantalate ceramic.
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公开(公告)号：US11261088B2
公开(公告)日：2022-03-01
申请号：US17033788
申请日：2020-09-26
Applicant: Kunming University of Science and Technology
Inventor： Ping Ning , Rui Cao , Xueqian Wang , Senlin Tian , Yixing Ma , Langlang Wang , Yingjie Zhang , Peng Chen
Abstract: A method for production of ammonium phosphate from phosphate rock slurry. The method includes: introducing flue gas containing SO2 into a phosphate rock slurry, to yield an absorption solution; evaporating waste ammonia water containing 10-20 wt. % ammonia to yield ammonia gas; introducing the ammonia gas into the absorption solution at a temperature of 110-135° C. until a neutralization degree of the absorption solution reaches 1.5-1.6, thus yielding an ammonium phosphate solution and calcium sulfate; separating the calcium sulfate from the ammonium phosphate solution; and introducing the ammonium phosphate solution to a granulator for granulation to yield ammonium phosphate granules; drying and sieving the ammonium phosphate granules, thereby yielding ammonium phosphate.
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公开(公告)号：US20200282252A1
公开(公告)日：2020-09-10
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
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.
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公开(公告)号：US10730010B2
公开(公告)日：2020-08-04
申请号：US16515634
申请日：2019-07-18
Applicant: Kunming University of Science and Technology
Inventor： Senlin Tian , Yuxin Song , Jianhong Huang , Xuewei Hu , Yingjie Li , Ping Ning
Abstract: The invention is a device and method for purifying sulfur dioxide and nitrogen oxide in flue gas with an electrolysis-chemical advanced oxidation enhanced ammonia method. The device includes a thermal activation reactor, ammonium hydroxide storage tank, absorption tower, electrolytic bath and crystallization separator. The method takes raw material part of an ammonium sulfate solution that is a reaction product of ammonia and sulfur oxide in flue gas, and an ammonium persulfate solution prepared by electrolysis of an electrolytic bath as an oxidant to enhance the efficiency of purifying sulfur dioxide and nitrogen oxide in the flue gas with an ammonia method. A thermal activation reactor activates an ammonium persulfate containing solution to generate a strong oxidizing SO4.−, so that NOx and SO2 in the flue gas may be more efficiently converted into a product having higher solubleness for enhanced removal of sulfur dioxide and nitrogen oxide in the flue gas.
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公开(公告)号：US20200231504A1
公开(公告)日：2020-07-23
申请号：US16749105
申请日：2020-01-22
Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY
Abstract: The present invention discloses a method for synergistic stabilization/solidification of red mud and phosphogypsum. The method includes: grinding and mixing red mud and phosphogypsum, adding deionized water, uniformly stirring the mixture to prepare slurry, adjusting a pH value of the slurry to 7.5-8.5, adding a conditioner and conducting stirring, adding a stabilizer and an anti-permeability agent, uniformly stirring the mixture to obtain a gel product, and conducting solidification for 12-24 h to solidify the red mud and phosphogypsum, to obtain a red mud-phosphogypsum solidified material. In the present invention, the neutralization reaction between acidic ions in phosphogypsum and basic ions in red mud is adopted to reduce a pH value of the red mud and a transfer capability of pollutants in waste residues; synergistic solidification processing is conducted on two types of solid wastes: red mud produced in the aluminum smelting industry and phosphogypsum produced in the phosphorus chemical industry.
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