Patents Assigned to GEM Co., Ltd.
  • Patent number: 12378637
    Abstract: Disclosed is a treatment system for the slag phase after removing iron-aluminum-chromium from leaching solution of laterite nickel ore, comprising a filtering module, a refining module, a feeding module, and a measurement module. The filtering module comprises a material suction component and a filtering assembly. The filtering assembly is connected to the outlet of the material suction component and features a filter residue outlet and a filtrate outlet. The refining module is connected to the filter residue outlet. The feeding module consists of a material pipe and a material guiding drive component. The material pipe has an inlet end connected to the outlet of the refining module. This setup enables the timely filtration of the generated slag phase, followed by refinement processing, and allows for the controlled metering of the returned filter residue. Consequently, it enhances the subsequent acid leaching and dissolution efficiency of the slag phase.
    Type: Grant
    Filed: July 31, 2023
    Date of Patent: August 5, 2025
    Assignees: PT ESG NEW ENERGY MATERIAL, PT QMB NEW ENERGY MATERIALS, GEM CO., LTD., PT GEM INDONESIA NEW ENERGY MATERIALS
    Inventors: Satryo Soemantri Brodjonegoro, Kaihua Xu, Andi Syaputra Hasibuan, Emil Salim, Rizky Wanaldi, Tegar Mukti Aji, Piyan Rahmadi, Xiaodong Yan
  • Patent number: 12378630
    Abstract: Disclosed is a combined heat exchange system of flash tank and preheater for laterite nickel ore leaching. The system comprises a high-pressure reactor, preheating towers, and flash tanks. The preheating tower is connected to the feed inlet of the high-pressure reactor. The flash tank is connected to the discharge outlet of the high-pressure reactor, and it is also connected to the preheating tower. Inside the flash tank, there is a pressure relief chamber and a buffering mechanism. The buffering mechanism comprises a buffering component and a connecting structure that are interconnected. In this disclosure, the buffering component of the pressure relief chamber is equipped with a central bulge and a buffering tank, materials falling from the pressure relief chamber can sequentially pass over the central bulge and slide from one end of the buffering tank to the other, then slide upwards out of the tank, achieving a buffering effect.
    Type: Grant
    Filed: June 30, 2023
    Date of Patent: August 5, 2025
    Assignees: GEM CO., LTD., PT GEM INDONESIA NEW ENERGY MATERIALS
    Inventors: Satryo Soemantri Brodjonegoro, Kaihua Xu, Rizky Wanaldi, Tegar Mukti Aji, Aad Alief Rasyidi Baking, Andi Syaputra Hasibuan, Piyan Rahmadi, Yaguang Peng, Arnaldo Marulitua Sinaga
  • Patent number: 12378639
    Abstract: A process and system for recovering manganese from a high-pressure leaching system of laterite nickel ore, including the following steps: S1. adding limestone to the high-pressure leaching solution of the laterite nickel ore for pre-neutralization to obtain first-stage carbon dioxide and a neutralization solution, adding limestone for precipitation of iron and aluminum to obtain second-stage carbon dioxide and a slurry, and adding liquid alkali to the slurry for precipitation of nickel-cobalt-manganese to obtain nickel-cobalt-manganese hydroxide and a nickel-cobalt-manganese precipitated lean solution; S2. collecting first-stage carbon dioxide and second-stage carbon dioxide and passing same into a nickel-cobalt-manganese precipitated lean solution, adjusting the pH value of the nickel-cobalt-manganese precipitated lean solution to 5-6.5 by liquid alkali, and then performing a precipitation reaction to obtain a crude manganese carbonate; S3.
    Type: Grant
    Filed: July 31, 2023
    Date of Patent: August 5, 2025
    Assignees: PT ESG NEW ENERGY MATERIAL, PT QMB NEW ENERGY MATERIALS, GEM CO., LTD., PT GEM INDONESIA NEW ENERGY MATERIALS
    Inventors: Satryo Soemantri Brodjonegoro, Kaihua Xu, Evan Wahyu Kristiyanto, Nurul Lailatul Muzayadah, Tegar Mukti Aji, Andi Syaputra Hasibuan, Rizky Wanaldi, Tao Cui
  • Patent number: 12362043
    Abstract: A system for optimizing duration time of high-pressure leaching of laterite nickel ore, includes a data collecting module, an actual duration time calculating module configured to obtain an actual duration time of the pulp in the autoclave during the high-pressure leaching process, an optimal duration time determining module configured to obtain an optimal duration time corresponding to a maximum income value, according to the qualities of the pulp, and a duration time control module configured to compare an actual duration time with the optimal duration time under this condition, and control opening degrees of a feed valve and a discharge valve of the autoclave by using a feedback control system, to ensure the actual duration time of the pulp in the autoclave is within the optimal duration time all the time.
    Type: Grant
    Filed: July 27, 2023
    Date of Patent: July 15, 2025
    Assignees: PT ESG NEW ENERGY MATERIAL, PT QMB NEW ENERGY MATERIALS, GEM CO., LTD., PT GEM INDONESIA NEW ENERGY MATERIALS
    Inventors: Satryo Soemantri Brodjonegoro, Kaihua Xu, Yaning Wang, Rizky Wanaldi, Tegar Mukti Aji, Aad Alief Rasyidi Baking, Andi Syaputra Hasibuan, Piyan Rahmadi
  • Patent number: 12343734
    Abstract: Disclosed is cylindrical ore washer for hydrometallurgical smelting of laterite nickel ore, comprising a mounting bracket, a screening component, a regulator, and an ore-washing component. The screening component comprises a frame, a cylinder body, a screening cylinder, and a driving component. The cylinder body is rotatably mounted on the frame along an axis oriented in a first direction. The screening cylinder is housed within the cylinder body, with a feed inlet and a discharge outlet located at opposite ends along the first direction, respectively. The cylindrical wall of the screening cylinder is provided with multiple screen holes, and an inner side wall of the screening cylinder protrudes to form a baffle plate. This disclosure is capable of impeding the movement of ore towards the discharge outlet, thereby prolonging the residence time of the ore within the screening cylinder and enhancing both the ore-washing efficiency and cleaning effectiveness.
    Type: Grant
    Filed: June 29, 2023
    Date of Patent: July 1, 2025
    Assignees: PT ESG NEW ENERGY MATERIAL, PT QMB NEW ENERGY MATERIALS, GEM CO., LTD., PT GEM INDONESIA NEW ENERGY MATERIALS
    Inventors: Satryo Soemantri Brodjonegoro, Kaihua Xu, Rizky Wanaldi, Tegar Mukti Aji, Andi Syaputra Hasibuan, Evan Wahyu Kristiyanto, Pengyun Xu, Aad Alief Rasyidi Baking, Arnaldo Marulitua Sinaga
  • Patent number: 12325895
    Abstract: A method for dynamically controlling high-pressure leaching reaction condition of laterite nickel ore includes: setting a target temperature and a target pressure of an high-pressure reactor; obtaining the heat power required for heating the feeding pulp to the target temperature; obtaining the heat power brought by the acid; obtaining the required new steam thermal power; obtaining the required new steam flow; adjusting the real-time flow of the new steam to the required flow of the new steam, and adjusting the exhaust valve opening degree and discharge flow rate of the high-pressure reactor to make the real-time pressure of the high-pressure reactor equal to the target pressure, and adjusting the flow rate of the new steam to make the real-time temperature of the high-pressure reactor equal to the target temperature.
    Type: Grant
    Filed: June 30, 2023
    Date of Patent: June 10, 2025
    Assignees: PT QMB NEW ENERGY MATERIALS, PT ESG NEW ENERGY MATERIAL, GEM CO., LTD., PT GEM INDONESIA NEW ENERGY MATERIALS
    Inventors: Kaihua Xu, Satryo Soemantri Brodjonegoro, Yi Wang, Rizky Wanaldi, Tegar Mukti Aji, Evan Wahyu Kristiyanto, Andi Syaputra Hasibuan, Piyan Rahmadi
  • Patent number: 12325898
    Abstract: A high-pressure reactor acid adding system for laterite nickel ore hydrometallurgy includes: an acid liquor supply tank, an acid adding pipe, an acid adding pump, a pressure stabilizer, and a high-pressure reaction kettle, where one end of the acid adding pipe is communicated with the high-pressure reaction kettle, the other end thereof is communicated with the acid liquor supply tank, and the acid adding pump is disposed on the acid adding pipe and is configured to pressurize and pump acid liquor in the acid liquor supply tank to the high-pressure reaction kettle through the acid adding pipe; and the pressure stabilizer is disposed on the acid adding pipe and is configured to dynamically accommodate or discharge the acid liquor, to reduce pressure fluctuation in the acid adding pipe. Compared with the prior art, according to this disclosure, the pressure stabilizer is disposed on the acid adding pipe.
    Type: Grant
    Filed: June 30, 2023
    Date of Patent: June 10, 2025
    Assignees: PT ESG NEW ENERGY MATERIAL, PT QMB NEW ENERGY MATERIALS, GEM CO., LTD, PT GEM INDONESIA NEW ENERGY MATERIALS
    Inventors: Satryo Soemantri Brodjonegoro, Kaihua Xu, Rizky Wanaldi, Tegar Mukti Aji, Andi Syaputra Hasibuan, Shella Arinda, Evan Wahyu Kristiyanto, Yi Wang, Arnaldo Marulitua Sinaga
  • Patent number: 12325896
    Abstract: A treatment method and application for laterite nickel ore leaching solution with high calcium and magnesium content, comprising the following steps: S1. preparing an extracted organic phase from the 2-hexyldecanoic acid and the HBL110/HBL116 extractant; S2. performing nickel-cobalt co-extraction on the extracted organic phase and a laterite nickel ore leaching solution with a high calcium and magnesium content to obtain a first loaded organic phase and a raffinate; in a laterite nickel ore leaching solution with a high calcium and magnesium content; S3. washing the first loaded organic phase with a washing solution to obtain a second loaded organic phase and washing water, wherein the washing water is refluxed to a laterite nickel ore leaching solution with high calcium and magnesium content; S4. adding a reverse extracting solution to the second loaded organic phase for reverse extracting to obtain a nickel-cobalt salt solution and a reverse extracted organic phase; S5.
    Type: Grant
    Filed: July 31, 2023
    Date of Patent: June 10, 2025
    Assignees: PT ESG NEW ENERGY MATERIAL, PT QMB NEW ENERGY MATERIALS, GEM CO., LTD., PT GEM INDONESIA NEW ENERGY MATERIALS
    Inventors: Satryo Soemantri Brodjonegoro, Kaihua Xu, Rizky Wanaldi, Tegar Mukti Aji, Aad Alief Rasyidi Baking, Andi Syaputra Hasibuan, Piyan Rahmadi, Wei Liu
  • Patent number: 12297125
    Abstract: The disclosure discloses a method for preparing battery-grade nickel-cobalt-manganese sulfate crystals from low nickel matte, which includes the following steps: S1, sequentially performing high-pressure leaching, iron-aluminum removal and nickel-cobalt-manganese precipitation treatment on laterite nickel ore to obtain an underflow containing nickel-cobalt-manganese hydroxide, wherein the pH value of the underflow is 7-8; S2, performing oxygen-pressure leaching on the low nickel matte using sulfuric acid and oxygen to obtain a leached slurry containing residual acid, adding the underflow into the leached slurry to obtain a mixed slurry, and adjusting the pH value of the mixed slurry to be 3-5 using the underflow; and S3, performing filter pressing on the mixed slurry to obtain filtrate and tailings, and performing nickel-cobalt-manganese co-extraction, concentration and crystallization on the filtrate to obtain the nickel-cobalt-manganese sulfate crystals.
    Type: Grant
    Filed: July 26, 2023
    Date of Patent: May 13, 2025
    Assignees: PT QMB NEW ENERGY MATERIALS, PT ESG NEW ENERGY MATERIAL, GEM CO., LTD., PT GEM INDONESIA NEW ENERGY MATERIALS
    Inventors: Kaihua Xu, Satryo Soemantri Brodjonegoro, Guoquan Jin, Tegar Mukti Aji, Rizky Wanaldi, Andi Syaputra Hasibuan, Evan Wahyu Kristiyanto, Emil Salim
  • Patent number: 12286360
    Abstract: The disclosure discloses a method for preparing a battery-grade nickel-cobalt-manganese sulfate solution from low nickel matte.
    Type: Grant
    Filed: July 26, 2023
    Date of Patent: April 29, 2025
    Assignees: PT QMB NEW ENERGY MATERIALS, PT ESG NEW ENERGY MATERIAL, GEM CO., LTD., PT GEM INDONESIA NEW ENERGY MATERIALS
    Inventors: Kaihua Xu, Satryo Soemantri Brodjonegoro, Yi Wang, Rizky Wanaldi, Tegar Mukti Aji, Evan Wahyu Kristiyanto, Andi Syaputra Hasibuan, Piyan Rahmadi
  • Publication number: 20250083974
    Abstract: A core-shell gradient ternary precursor and a preparation method and application thereof. The preparation method includes (1) mixing a terephthalic acid solution with alkaline liquor to obtain a terephthalic acid salt solution, adding a nickel source solution for a reaction to obtain a Ni-MOF solution, mixing the Ni-MOF solution with ammonia water, and adjusting a pH value to obtain a base solution; and (2) adding a nickel-cobalt-manganese ternary mixed salt solution, a liquid alkali solution, and an ammonia-water solution simultaneously to the base solution obtained in step (1) for a co-precipitation reaction, and obtaining the core-shell gradient ternary precursor after aging treatment. The Ni-MOF is pre-prepared and used as a core for the co-precipitation reaction, to obtain the core-shell like precursor with a gradient. Carbon in the core of the core-shell gradient ternary precursor reacts with oxygen, thereby reducing a nickel oxidation state on particle surfaces and reducing crack generation.
    Type: Application
    Filed: August 18, 2022
    Publication date: March 13, 2025
    Applicant: JINGMEN GEM CO., LTD.
    Inventors: Kaihua XU, Xianjin YUE, Kun ZHANG, Wenchao HUA, Cong LI, Xing YANG, Hao LV, Wenfang YUAN, Dongming JIA, Xiaofei XUE, Xueqian LI, Liangjiao FAN, Xing XIANG, Xiaoshuai ZHU, Jiamin SHI, Zhengjie GONG, Daodao YIN
  • Patent number: 12113187
    Abstract: The present invention provides a method for recovering valuable metals from waste lithium ion batteries. The method comprises: short-circuit discharging, dismantling, crushing, roasting, and screening on waste lithium ion batteries to obtain active electrode powders; using alkaline solution to wash the active electrode powders, then filtering to remove copper and aluminum; drying the activated electrode powder after alkaline washing treatment, mix the dried activated electrode powder with starch and concentrated sulfuric acid and stir evenly to obtain the mixed material; calcining the mixed material with controlling the atmosphere; taking out the product obtained from calcination and using deionized water to extract the leachate and leaching residue with valence metal ions, and then obtaining the leachate after filtering.
    Type: Grant
    Filed: October 31, 2023
    Date of Patent: October 8, 2024
    Assignees: GEM CO., LTD., JINGMEN GEM CO., LTD.
    Inventors: Kaihua Xu, Liangxing Jiang, Jian Yang, Kun Zhang, Chenwei Li, Yongan Chen, Yanqing Lai
  • Patent number: 12068667
    Abstract: Provided is a compact and lightweight motor complex cooling system with compatibility in which by providing a structure that circulates internal air without introducing air from the outside, an air-cooled radiator used in the conventional air cooling scheme is unnecessary, and only a water-cooled radiator is required, contributing to miniaturization and weight reduction of a device, and the compact and lightweight motor complex cooling system can be installed in an existing motor, and thus has compatibility, and is configured by a combination of air cooling and water cooling using coolant, allowing direct cooling to the end coil windings and the front of shafts of a rotor and a stator and by air cooling, and has excellent cooling efficiency through water cooling.
    Type: Grant
    Filed: January 31, 2024
    Date of Patent: August 20, 2024
    Assignee: GEM CO., LTD.
    Inventors: Younggyun Kim, Seungsoo Hong
  • Patent number: 12027696
    Abstract: The invention discloses a ternary positive electrode material coated with nitride/graphitized carbon nanosheets and preparation method thereof. The ternary positive electrode material coated with nitride/graphitized carbon nanosheets includes a ternary positive electrode material matrix and a coating layer; the coating layer is composed of nitride and graphitized carbon; and the graphitized carbon is formed in situ in the coating process of the nitride. Compared with a physical mixing method, the in-situ generated carbon layer is connected to the material matrix more tightly, and the formed conductive network is denser. So that the rate performance of the material is improved to the maximum extent. The preparation method is simple and easy to realize industrial production. And the obtained ternary positive electrode material coated with nitride/graphitized carbon nanosheets has excellent rate performance and cycling stability.
    Type: Grant
    Filed: October 26, 2023
    Date of Patent: July 2, 2024
    Assignees: GEM CO., LTD., GEM (HUBEI) NEW ENERGY MATERIALS CO., LTD.
    Inventors: Kaihua Xu, Rui He, Weifeng Ding, Yunhe Zhang, Xiang Zhang, Kun Zhang
  • Publication number: 20240166533
    Abstract: A high-nickel ternary core-shell precursor for a lithium battery, a positive electrode material and a preparation method therefor. The chemical structural formula of the precursor is zNi(C4H7N2O2)2—Nix-zM1yM21-x-y(OH)2, wherein M1 and M2 are two of cobalt, aluminum, and manganese. The preparation method comprises: pumping a prepared metal salt solution, a dimethylglyoxime-ammonia water composite solution, and an ammonia water solution into a reaction kettle, maintaining the pH of a reaction system, and controlling the reaction time to obtain a sphere-like precursor inner core with a structural formula of Ni(C4H7N2O2)2; pumping the metal salt solution and the ammonia water solution, stopping pumping the dimethylglyoxime-ammonia water composite solution, pumping a sodium hydroxide solution to obtain a sphere-like core-shell precursor, washing, drying, sieving and deironing the precursor, mixing with a lithium source, and calcining to prepare the positive electrode material.
    Type: Application
    Filed: August 18, 2022
    Publication date: May 23, 2024
    Applicant: JINGMEN GEM CO., LTD.
    Inventors: Kaihua XU, Kun ZHANG, Dongming JIA, Cong LI, Xing YANG, Xiaofei XUE, Liangjiao FAN, Xiaofei CHEN, Xueqian LI, Xiaoshuai ZHU, Hao LV, Wenfang YUAN, Ding WANG, Xianjin YUE
  • Patent number: 11708280
    Abstract: The present invention provides a method of preparing an MOF-coated monocrystal ternary positive electrode material. Firstly, a solution A of nickel, cobalt and manganese metal salts, an ammonia complexing agent solution and a caustic soda liquid are added to a reactor for reaction to obtain a precursor core; then, an organic carboxylate is dissolved in an amount of an organic solvent to obtain a solution B; the solution B and a manganese metal salt solution with a given concentration are added to the reactor and aged to obtain an MOF-coated core-shell structure precursor; the core-shell structure precursor is pre-sintered at a low temperature to obtain a nickel-cobalt-manganese oxide with monocrystal structure; the nickel-cobalt-manganese oxide with monocrystal structure is uniformly mixed with LiOH·H2O in a mortar and then calcined at a high temperature to obtain an MOF-coated monocrystal ternary positive electrode material.
    Type: Grant
    Filed: June 24, 2022
    Date of Patent: July 25, 2023
    Assignees: GEM CO., LTD., JINGMEN GEM CO., LTD.
    Inventors: Kaihua Xu, Zhenkang Jiang, Kun Zhang, Xiaofei Xue, Cong Li, Haibo Sun, Kang Chen, Jun Li, Liangjiao Fan
  • Patent number: 11695170
    Abstract: Provided are a battery-level Ni—Co—Mn mixed solution and a preparation method for a battery-level Mn solution, the steps thereof comprising: acid dissolution (S1), alkalization to remove impurities (S2), synchronous precipitation of calcium, magnesium, and lithium (S3), deep ageing to remove impurities (S4), synergistic extraction (S5), and refining extraction (S6). The steps of deep ageing to remove impurities (S4) and synergistic extraction (S5) comprise: performing deep ageing on a filtrate obtained from the step of synchronous precipitation of calcium, magnesium, and lithium (S3), and after performing filtration to remove impurities, obtaining an aged filtrate; using P204 to extract the aged filtrate and obtain a loaded organic phase, and subjecting the loaded organic phase to staged back-extraction to obtain the battery-level Ni—Co—Mn mixed solution and a Mn-containing solution.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: July 4, 2023
    Assignees: JINGMEN GEM CO., LTD, GEM CO., LTD
    Inventors: Kaihua Xu, Zhenkang Jiang, Qinxiang Li, Kun Zhang, Wenjie Wang, Jun Wang, Shihong Wen
  • Publication number: 20220356075
    Abstract: The present invention provides a method of preparing an MOF-coated monocrystal ternary positive electrode material. Firstly, a solution A of nickel, cobalt and manganese metal salts, an ammonia complexing agent solution and a caustic soda liquid are added to a reactor for reaction to obtain a precursor core; then, an organic carboxylate is dissolved in an amount of an organic solvent to obtain a solution B; the solution B and a manganese metal salt solution with a given concentration are added to the reactor and aged to obtain an MOF-coated core-shell structure precursor; the core-shell structure precursor is pre-sintered at a low temperature to obtain a nickel-cobalt-manganese oxide with monocrystal structure; the nickel-cobalt-manganese oxide with monocrystal structure is uniformly mixed with LiOH.H2O in a mortar and then calcined at a high temperature to obtain an MOF-coated monocrystal ternary positive electrode material.
    Type: Application
    Filed: June 24, 2022
    Publication date: November 10, 2022
    Applicants: GEM CO., LTD., JINGMEN GEM CO., LTD.
    Inventors: Kaihua XU, Zhenkang JIANG, Kun ZHANG, Xiaofei XUE, Cong LI, Haibo SUN, Kang CHEN, Jun LI, Liangjiao FAN
  • Patent number: 9328398
    Abstract: A method for recycling noble metals from electronic waste materials and apparatus thereof. The method comprises the following steps: mechanically breaking up the electronic waste materials; removing rubber and plastic materials by electrostatic separation; removing ferromagnetic metals by magnetic separation; removing residual rubber and plastic materials by microwave pyrolysis; removing low-melting-point metals by indirectly heating using microwave; separating the noble metals from one another in turn from low-melting-point metal to high-melting-point metal for recycle. The apparatus includes a microwave housing. A filtering screen is positioned on the inside wall of the housing horizontally, and vertically-arranged and open-ended heating pipes are positioned over the filtering screen. The method and apparatus can adequately recycle resources in the electronic waste materials.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: May 3, 2016
    Assignee: GEM CO., LTD.
    Inventor: Kaihua Xu
  • Patent number: 9114445
    Abstract: A burning-free and non-cyanide method for recycling waste printed circuit board is provided, comprising the following steps: desoldering to separate lead and tin; crashing and electrostatic selecting to respectively extract stibium, aluminum, copper, nickel, silver, gold, platinum and palladium. The method can realize the maximization of recycling of valuable metal resources, can thoroughly separate the metal lead and tin for recycling, and meanwhile increase the recycling rate of the metal palladium.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: August 25, 2015
    Assignee: GEM CO., LTD.
    Inventor: Kaihua Xu