Chongqing University

Other

The Boeing Company

Chongqing Vocational Institute of Engineering

Chongqing Shangjia Electronic Co., Ltd.

Chongqing Shangjai Electronic

FuSheng Pan

Hao Xu

Ping Li

YiFei Xu

Shuchun Li

Juncai Ma

Jingfeng Wang

Jiang Liu

Zhan Xu

Liang Fu

Xinren Liao

Guangshan Hu

Hualin Xie

Jingren Dong

Daliang Yu

Shijie Liu

Dingfei Zhang

Fei Guo

Luyao Jiang

Xia Shen

Sensen Chai

Kui Wang

Bo Wang

Weipeng Zhang

Cheng Kun Li

Yuhang Zhou

Jianbo Li

Yuyu Dou

Jiarong Gao

Yiming Chen

Zuzheng Wu

Hongyu Zhu

Xing Peng

YuAn Chen

Yu Bi

Jiashun He

Jun Yi

Shiqing Gao

Jiaxing Peng

Hang Zhou

Yuanyong Gong

Jun Tan

Xianhua Chen

Provided are a method and molten salt system for recovering rare earth elements from NdFeB waste and use of ferric oxide as a raw material of a manganese-zinc ferrite. The molten salt system comprising the following components in percentage by weight: 40% of KAlFor NaAlF, 40% of KBeF, and 20% of KAlF. By adopting the three-component molten salt system of the present invention, recovery rates of rare earth elements extracted from NdFeB waste all can reach 98% or above. By adopting the three-component molten salt system, extraction temperature is 100-400° C. lower than that of all current similar halogenation methods, and extraction time is fold shorted to 1-3 h. The reduction of the extraction temperature and the shortening of the melting time greatly reduce the energy consumption of extracting rare earth elements from NdFeB waste, and the economic benefits are remarkable.

Method for recovering rare earth elements from NdFeB waste and use of ferric oxide as raw material of manganese-zinc ferrite

Provided are a high-strength magnesium alloy profile, a preparation process therefor and the use thereof, wherein same relate to the technical field of the formation of high-strength magnesium alloys. A strengthening phase of the high-strength magnesium alloy profile in an extrusion state mainly comprises LPSO phase and β phase, wherein the volume fraction of LPSO phase is 1-40%; and the volume fraction of β phase is 1-20%. A strengthening phase of the high-strength magnesium alloy profile in an aging state mainly comprises LPSO phase, β phase, β′ phase and γ′ phase, wherein the volume fraction of LPSO phase is 1-40%; the volume fraction of β phase is 1-20%; the number density of β′ phase is 10-10m, and the length to thickness ratio l/d thereof is 1:20; and the number density of γ′ phase is 10-10mand the length to thickness ratio l/d thereof is 1:50.

High-strength magnesium alloy profile, preparation process therefor and use thereof

A method for synchronous production of manganese tetraoxide and ferric oxide for a soft magnetic material by using marine polymetallic nodules includes: 1) crushing and grinding marine manganese nodules and baking to a constant weight; thoroughly mixing with a mixed flux and roasting in a muffle furnace; 2) carrying out solid-liquid separation, washing solid-phase precipitates with water, grinding the solid, adding sulfuric acid, controlling the temperature to be below 50&#xb0; C., and vacuuming a reactor up; 3) adding a reducing agent to react at room temperature for 5-10 min, adding ammonia water to adjust the pH value to 5.5, and carrying out separation and filtering; 4) controlling the temperatures of manganese sulfate and ferric sulfate solutions to be below 50&#xb0; C., and adding ammonium sulfide; and 5) washing with deionized water, and calcining at 800-900&#xb0; C. for 1-3 s by a suspension low-temperature instantaneous firing system.

Method for synchronous production of manganese tetraoxide and ferric oxide for soft magnetic material by using marine polymetallic nodules

The invention relates to a method for preparing amorphous particle-modified magnesium alloy surface-gradient composites and pertains to the technical field of composites. The method comprises steps of: holding the temperature at 150&#x2dc;350&#xb0; C. for FeCrMoBC amorphous alloy particles; mixing pure magnesium, pure zinc, pure aluminum, pure copper and Mg-5 wt % Mn alloy under continuous protective gases, gradually raising temperature to 720&#x2dc;760&#xb0; C. and melting at a constant temperature for 15&#x2dc;25 min to obtain a magnesium alloy melt; cooling the magnesium alloy melt to 600&#x2dc;635&#xb0; C. and starting mechanical stirring; continuing the cooling until the semi-solid temperature is 570&#x2dc;615&#xb0; C., slowly adding the above FeCrMoBC amorphous alloy particles, holding for 2&#x2dc;5 min after mixing evenly, and cooling the crucible with water to obtain an amorphous particle-modified magnesium alloy surface-gradient composite.

Method for preparing amorphous particle-modified magnesium alloy surface-gradient composites

A tracked vehicle is provided. The tracked vehicle includes a frame, a driving mechanism installed in the frame, and two track wheels respectively arranged on the left and right sides of the frame. The driving mechanism drives the track wheels to rotate. The track wheel includes a track body, a first main support, a second main support and a third main support provided in the track body. The first main support, the second main support and the third main support are connected to the vehicle frame through the first, second and third connecting rods respectively. The second main support is provided with an auxiliary support frame having one end hinged to the second main support, and the other end of the auxiliary support frame is provided with a first roller contacting with the inner side of the track body.

Tracked vehicle

Provided are a copper-containing, high-toughness and rapidly degradable magnesium alloy, a preparation method therefor and the use thereof, wherein same relate to the field of materials for oil and gas exploitation. When the magnesium alloy is in an as-cast state, an extrusion state or an aging state, a strengthening phase thereof mainly includes an MgCuRE-type long-period phase and an MgRE phase and an MgCu phase, the MgCuRE-type long-period phase has a volume fraction of 3-60%, the MgRE phase has a volume fraction of 0.5-20%, and the MgCu phase has a volume fraction of 0.5-15%, wherein RE is a rare-earth metal element.

Copper-containing, high-toughness and rapidly degradable magnesium alloy, preparation method therefor and use thereof

A magnesium alloy including about 2 percent by weight to about 8 percent by weight zinc, about 0.1 percent by weight to about 3 percent by weight manganese, about 1 percent by weight to about 6 percent by weight tin, about 0.1 percent by weight to about 4 percent by weight yttrium, and balance magnesium and impurities.

Magnesium-zinc-manganese-tin-yttrium alloy and method for making the same

The present invention relates to a ball picking robot, comprising a walking mechanism, a ball picking mechanism, a ball pushing mechanism and a ball storage mechanism. The ball picking mechanism comprises a ball picking basket, an air cylinder used for driving the ball picking basket to move up and down, an air storage tank used for providing an air source for the air cylinder, a solenoid valve arranged at the air outlet of the air storage tank, a micro air pump connected to the air storage tank, and a shielding assembly arranged at an opening in the rear end of the ball picking basket. A first gear is mounted at the input end of the micro air pump. The ball pushing mechanism comprises a rotary ball discharging assembly, comprising an either-rotation motor, a rotary impeller connected to a first output shaft of the either-rotation motor through a belt assembly.

Ball picking robot

A magnesium alloy including about 2 percent by weight to about 8 percent by weight zinc, about 0.1 percent by weight to about 3 percent by weight manganese, about 1 percent by weight to about 6 percent by weight tin, about 0.1 percent by weight to about 4 percent by weight yttrium, and magnesium.

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Chongqing, China

FuSheng Pan