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公开(公告)号：US20250153141A1
公开(公告)日：2025-05-15
申请号：US18936689
申请日：2024-11-04
Applicant: SUNRESIN NEW MATERIALS CO. LTD.
Inventor： Heng LIU , Qiong LIU , Suidang LI , Xiaokang KOU
Abstract: Disclosed are a lithium adsorbent, and a preparation method and an application thereof, which relate to the technical of extraction of lithium. The method of the disclosure includes obtaining a lithium adsorbent intermediate by mixing an oil phase with an aqueous phase; and obtaining the lithium adsorbent by mixing the lithium adsorbent intermediate with an organic auxiliary agent; where the oil phase includes a lithium source, an aluminum source, an oil-phase matrix, and an oil-phase auxiliary agent, and the oil-phase matrix includes a high-molecular polymer and vinylidene fluoride; the mixing an oil phase with an aqueous phase includes performing gradient stirring on a mixture of the oil phase and the aqueous phase. According to the disclosure, the high-stability lithium adsorbent can be prepared by optimizing and screening the high-temperature resistant oil-phase matrix and a specific preparation process. Compared with an existing lithium adsorbent, the lithium adsorbent prepared through the disclosure has less degradation, better mechanical strength, and stronger corrosion resistance in a high-temperature environment, and therefore a way of effectively extracting lithium resources from high-temperature and high-salt brine is provided.
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2.发明公开公开(公告)号：US20240026494A1
公开(公告)日：2024-01-25
申请号：US18255166
申请日：2021-12-09
Applicant: SUNRESIN NEW MATERIALS CO. LTD.
Inventor： Suidang LI , Hudao YAN , Jia YU , Lili FAN , Fumin GUO , Junlin GAO , Weiqiang LYU , Yuyun WEI , Qiong LIU , Xiaokang KOU
Abstract: A method for recovering lithium from a lithium precipitation mother liquor, the method using the following cycle steps including adsorption, displacement, desorption and transformation: a. mounting a lithium-sodium separation resin in a resin column, and adding the lithium precipitation mother liquor to the resin column for adsorption, wherein the adsorption rate can reach 90% or more; b. after adsorption, washing the resin with water, displacing the resin with a lithium-salt-containing solution to wash out residual sodium from the resin; c. after displacement, desorbing the resin by means of an acid solution to obtain a solution with a high lithium content and a low sodium content, which solution has passed desorption criteria; and d. after desorption, carrying out reverse transformation on the resin by means of a transformation solution in order to ensure that no bubbles appear and then reduce the adsorption effect during the adsorption process. During the cycle, the lithium in the lithium precipitation mother liquor is separated from the solution with a high lithium-to-sodium ratio to obtain the solution with the high lithium-to-sodium ratio.
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公开(公告)号：US20250128251A1
公开(公告)日：2025-04-24
申请号：US18695772
申请日：2024-01-23
Applicant: SUNRESIN NEW MATERIALS CO. LTD.
Inventor： Suidang LI , Gang WANG , Qiong LIU , Xiaokang KOU
IPC: B01J47/018 , B01J39/02 , B01J39/09 , B01J49/53 , C02F1/42 , C02F101/10
Abstract: A method for preparing an adsorption unit for lithium recovery and use of the adsorption unit. The method includes preparation of an adsorption unit by performing extrusion forming on pulverized lithium adsorbent resin or a lithium adsorbent precursor and an adhesive, the adsorption unit has both high selectivity and adsorption amount of the lithium adsorbent resin and can achieve high-efficiency adsorption of lithium in water with an ultra-low lithium content, and when the adsorption unit is used for adsorbing lithium in the water with the ultra-low lithium content, the entire adsorption process is simple, the desorption efficiency is high and the cost is low.
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公开(公告)号：US20250041830A1
公开(公告)日：2025-02-06
申请号：US18473474
申请日：2023-09-25
Applicant: SUNRESIN NEW MATERIALS CO. LTD.
Inventor： Xiaokang KOU , Suidang LI , Wenjin GAO , Huan ZHANG , Qiong LIU
Abstract: Provided are a lithium adsorbent and a preparation method therefor. A raw material for preparing the lithium adsorbent includes a lithium adsorbent active material and an auxiliary material, where the auxiliary material includes a hydrophilic binder and reinforcing fibers, and the use of the reinforcing fibers and the hydrophilic binder strongly prevents the propagation of brittle cracks caused by volume expansion and contraction of the lithium adsorbent active material during use, significantly increasing the strength and cycle life of the lithium adsorbent, while the use of the hydrophilic binder increases the adsorption rate and capacity of the lithium adsorbent.
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公开(公告)号：US20230017362A1
公开(公告)日：2023-01-19
申请号：US17792624
申请日：2020-12-16
Applicant: SUNRESIN NEW MATERIALS CO., LTD.
Inventor： Jia YU , Fumin GUO , Suidang LI , Qiong LIU , Xiaokang KOU
Abstract: Disclosed is a new continuous lithium-sodium separation method. A lithium-sodium separation mother solution, a first leacheate, a desorption solution, a second leacheate and a lithium-sodium separation adsorption tail solution respectively pass through a lithium-sodium separation mother solution feeding pipe (2), a first leacheate feeding pipe (3), a desorption solution feeding pipe (4), a second leacheate feeding pipe (5) and an adsorption tail solution top desorption solution feeding pipe (6) that are located above and below a rotary disc of a multi-way change-over valve system (1), respectively enter corresponding resin columns (7) by means of pore channels and channels in the multi-way change-over valve system (1), and then are discharged from an adsorption tail solution discharging pipe (8), a first leacheate discharging pipe (9), a qualified liquid discharging pipe (10), a second leacheate discharging pipe (11) and an adsorption tail solution top desorption solution discharging pipe (12), so as to complete the whole technological process, wherein the resin columns (7) are connected in series or in parallel by means of the channels located in the multi-way change-over valve system (1). The method is simple and easy to operate, the resin utilization rate is improved by 20% or more, the efficiency is improved by 40% or more, and the production cost can be reduced by 30-50%. The production reliability is improved, and all-year continuous operation can be realized.
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Patent Agency Ranking
公开(公告)号：US20250136458A1
公开(公告)日：2025-05-01
申请号：US18928921
申请日：2024-10-28
Applicant: SUNRESIN NEW MATERIALS CO. LTD.
Inventor： Heng LIU , Qiong LIU , Suidang LI , Xiaokang KOU
Abstract: Disclosed are a method for extracting lithium from brine, and an application. The method includes performing extraction on the brine through a continuous ion exchange process, where according to the continuous ion exchange process, in an adsorption section, adsorption is performed on the brine with an aluminum-based lithium adsorbent; in a water-pushing-material section, a resin column is washed with a solution; in a desorption section, desorption is performed with pure water, and a desorption solution is collected in segments; and in a material-pushing-water section, a solution in a resin column is replaced by spent brine. The solution used in the water-pushing-material section is a front-segment collected liquid in the desorption section, and the front-segment collected liquid satisfies the following parameter: 520 us*cm−1
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公开(公告)号：US20240218483A1
公开(公告)日：2024-07-04
申请号：US18556060
申请日：2022-08-09
Applicant: SUNRESIN NEW MATERIALS CO .LTD
Inventor： Suidang LI , Xiaokang KOU , Fumin GUO , Jia YU , Wenjin GAO , Lili FAN , Kaile CHU , Weina BIAN , Yao WANG , Peng XIANG , Qiong LIU
Abstract: The present application discloses a lithium extraction method for an alkaline solution, in which a lithium adsorption material is used in an alkaline environment. Lithium ions in the alkaline solution are adsorbed, the lithium adsorption material is replaced with an alkaline high-lithium low-impurity solution, and then an acid solution is used for desorption, so that a high-lithium salt solution having higher lithium content can be obtained. Lithium concentration can reach 5 g/L or more, and the high-lithium salt solution can enter a bipolar membrane system for electrolysis, thereby preparing an alkaline high-lithium low-impurity solution and an acid solution for replacement and desorption of the lithium adsorption material. In the method provided by the present application, lithium in an alkaline solution is adsorbed by resin, and the lithium is preliminarily separated from sodium and potassium. Then, the sodium and the potassium are gradually removed from the resin according to the difference of the retention characteristics of the lithium, the sodium and the potassium on the resin, so that the function of lithium purification is achieved, and lithium concentration is ensured.
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公开(公告)号：US20230312859A1
公开(公告)日：2023-10-05
申请号：US18043786
申请日：2021-02-24
Applicant: SUNRESIN NEW MATERIALS CO. LTD.
Inventor： Chaoyang WANG , Cheng ZHANG , Dan WU , Weijie ZHAO , Yanjun LI , Qiong LIU , Xiaokang KOU
IPC: C08J9/28 , C08F222/34 , C08F2/18
CPC classification number: C08J9/28 , C08F222/34 , C08F2/18 , C08J2201/026 , C08J2205/042 , C08J2325/12
Abstract: A porous resin used to solid phase synthesis and a preparation method therefor, specifically being a porous resin having functional groups being an amino group or a hydroxyl group and a preparation method therefor. Using an olefin compound containing two cyano groups as a modified monomer, using a high internal phase emulsion as a pore-foaming agent, and performing suspension polymerization to prepare the porous resin. And then functionalizing the porous resin to obtain the porous resin having functional groups being an amino group or a hydroxyl group. Different from the existing preparation method, the modified monomer can make the distribution of the functional groups more uniform, and make the swelling degrees of the porous resin in different solvents close. The high internal phase emulsion pore-foaming agent can make the pore size distribution of the carrier narrower. The porous resin can be used as a solid phase synthesis carrier to prepare an oligonucleotide, and the use of the carrier is beneficial for improving the yield and purity of the oligonucleotide.
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公开(公告)号：US20230038402A1
公开(公告)日：2023-02-09
申请号：US17790668
申请日：2020-12-16
Applicant: SUNRESIN NEW MATERIALS CO. LTD.
Inventor： Li ZHANG , Yanjun LI , Qiong LIU , Xiaokang KOU
IPC: C02F1/28 , B01J20/26 , C08F112/36 , C08F112/08 , C08J3/24 , C08J9/28
Abstract: The present invention relates to an adsorbent resin for removing perfluorinated pollutants from a body of water, a preparation therefor and the use thereof. The objective is to solve the problem of traditional adsorbent materials, such as active carbon materials, having a poor effect in terms of removing perfluorooctanoic acid from water, being non-renewable, etc. In the present method, styrene and divinylbenzene are used as framework materials, a suitable pore-forming agent and a suitable dispersant are selected in order to prepare a macroporous resin with a moderate pore size, and an alkylation reaction is carried out at a low hindrance with p-xylylene dichloride (XDC) being used as a post-crosslinking agent, whereby a rigid benzene ring structure is introduced into the resin by means of post-crosslinking, thereby further increasing the hydrophobicity of the resin and increasing the crosslinking degree thereof; in addition, the micropore structure is adjusted in order to obtain an adsorbent resin with a narrow particle size distribution, a uniform pore size and a high specific surface area. The size of micropores in the resin is close to the molecular size of perfluorooctanoates in water, the adsorbate sieving capacity is strong, and the adsorption rate of perfluorinated compounds can be further improved.
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公开(公告)号：US20240183002A1
公开(公告)日：2024-06-06
申请号：US18563129
申请日：2022-08-12
Applicant: SUNRESIN NEW MATERIALS CO. LTD.
Inventor： Suidang LI , Fumin GUO , Wenjin GAO , Pengwei JIAO , Qiong LIU , Jia YU , Weina BIAN , Kaile CHU , Yao WANG , Xiaokang KOU
CPC classification number: C22B3/24 , B01J20/183 , B01J20/28026 , B01J20/3071 , B01J20/3078
Abstract: A method for lithium adsorption in a carbonate- and/or sulfate-containing solution, comprising using an aluminum-based lithium adsorbent for adsorption of lithium ions in the carbonate- and/or sulfate-containing solution, after the adsorption is saturated, using a weakly acidic high-concentration salt solution to transform the adsorbent, desorbing the transformed adsorbent by means of a low-concentration salt solution or water, and entering the next cycle for operation.
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