Method for the preparation of mineral powder

Abstract

This invention discloses a method for preparing mineral powder. The preparation method includes: adding microorganisms to an inorganic acid solution to obtain an extract; using the extract to extract minerals from natural ores to obtain an inorganic salt solution of the minerals; subjecting the inorganic salt solution of the minerals to organic displacement treatment to obtain a mixture containing organic acid salts of the minerals; and separating the mixture containing organic acid salts of the minerals to obtain mineral powder. By employing the preparation method of this application, the inorganic salt solution of the minerals extracted by microorganisms is subjected to organic displacement treatment to achieve the organicification of natural minerals and trace elements, which is beneficial for absorption by living organisms. This embodiment separates the obtained mixture containing organic acid salts of minerals to obtain mineral powder, avoiding the production of acidic liquid products, improving safety, facilitating storage and transportation, and making it convenient to use.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of mineral extraction technology, specifically to a method for preparing mineral powder. Background Technology

[0002] There are two main methods for extracting minerals and trace elements from natural ores. One is the traditional chemical method, which involves leaching minerals and trace elements from natural ores under high temperature and pressure using an acidification and oxygenation process, followed by treatment with an alternating strong magnetic field to obtain an activated concentrate. The other is the microbial extraction method, which utilizes the biochemical reactions of microorganisms on the minerals and trace elements in natural ores under acidic conditions to extract them, followed by activation treatment of the concentrate using modular super-oxidation equipment. However, the concentrated solutions of natural minerals and trace elements obtained by both methods are acidic liquids, which present numerous problems in practical operation, including high risks, inconvenience in product storage, transportation, and use. Summary of the Invention

[0003] According to one aspect of the present invention, a method for preparing mineral powder is provided. The method for preparing mineral powder in this embodiment includes: adding microorganisms to an inorganic acid solution to obtain an extract; extracting minerals from natural ores using the extract to obtain an inorganic salt solution of the minerals; subjecting the inorganic salt solution of the minerals to an organic substitution treatment to obtain a mixture of organic acid salts containing the minerals; and separating the mixture of organic acid salts containing the minerals to obtain mineral powder.

[0004] The method for preparing mineral powder in this embodiment of the invention involves organic substitution treatment of mineral inorganic salt solutions extracted by microorganisms to achieve the organicification of natural minerals and trace elements, which is beneficial for absorption by living organisms and avoids the problem of gradual decline in activity and poor absorption caused by activation treatment. Simultaneously, this embodiment separates the obtained mixture containing mineral organic acid salts to obtain mineral powder, avoiding the production of acidic liquid products, improving safety, facilitating storage and transportation, and making it convenient to use. Attached Figure Description

[0005] Other objects and advantages of the invention will become apparent from the following description of embodiments of the invention with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the invention.

[0006] Figure 1 This is a flowchart of a method for preparing mineral powder according to an embodiment of the present invention.

[0007] Figure 2 This is a schematic diagram of a process for the wet extraction of minerals from natural ores using microorganisms, according to an embodiment of the present invention.

[0008] Figure 3 This is a schematic diagram of a reaction tower according to an embodiment of the present invention.

[0009] Figure 4 This is a schematic diagram of a purification device according to an embodiment of the present invention.

[0010] Figure 5 This is a schematic diagram of a replacement device according to an embodiment of the present invention.

[0011] Figure 6 This is a schematic diagram of a separation device according to an embodiment of the present invention.

[0012] Figure 7 This is a schematic diagram of a drying apparatus according to an embodiment of the present invention.

[0013] Figure 8 This is a schematic diagram of a compounding device according to an embodiment of the present invention.

[0014] Figure 9 This is a schematic diagram of a molecular sieve membrane separation device according to an embodiment of the present invention.

[0015] Figure 10 This is a schematic diagram of the mechanized operation of a reaction tower according to an embodiment of the present invention.

[0016] Figure 11 This is a schematic diagram of a process for displacing a mineral inorganic salt solution and separating a mixture containing mineral organic acid salts according to an embodiment of the present invention.

[0017] It should be noted that the accompanying drawings are not necessarily drawn to scale, but are shown only in a schematic manner without affecting the reader's understanding. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only one embodiment of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0019] It should be noted that, unless otherwise defined, the technical or scientific terms used in this application should have the ordinary meaning understood by a person with ordinary skill in the art to which this application pertains. Where the terms "first," "second," etc., are used throughout the text, they are used only to distinguish similar objects and should not be construed as indicating or implying their relative importance, order of precedence, or implicitly specifying the number of technical features indicated. It should be understood that the data described by "first," "second," etc., can be interchanged where appropriate. Where "and / or" appears throughout the text, it means including three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution that satisfies both A and B. Furthermore, for ease of description, spatial relative terms such as "above," "below," "top," "bottom," etc., may be used here, only to describe the spatial positional relationship between one device or feature as shown in the figure and other devices or features. It should be understood that this also includes different orientations in use or operation besides those shown in the figure.

[0020] The embodiments of this application provide a method for preparing mineral powder, referring to... Figure 1 The preparation method includes the following steps S10 to S40.

[0021] Step S10: Add microorganisms to the inorganic acid solution to obtain the extract.

[0022] Step S20: Extract minerals from natural ore using an extractant to obtain an inorganic salt solution of the minerals.

[0023] Step S30: Perform organic substitution treatment on the inorganic salt solution of the mineral to obtain a mixture of organic acid salts containing the mineral.

[0024] Step S40: Separate the mixture of organic acid salts containing minerals to obtain mineral powder.

[0025] The mineral powder preparation method described in this invention involves organic substitution treatment of the inorganic salt solution extracted by microorganisms to achieve the organicification of natural minerals and trace elements, which is beneficial for absorption by living organisms and avoids the problem of gradual decline in activity and poor absorption caused by activation treatment. Simultaneously, this embodiment separates the obtained mixture containing mineral organic acid salts to obtain mineral powder, avoiding the production of acidic liquid products, improving safety, facilitating storage and transportation, and making it convenient to use.

[0026] In some embodiments, in step S10, the microorganisms used to extract minerals from natural ores live in an acidic solution suitable for their own growth but in which other bacteria cannot survive. This acidic solution needs to meet two conditions: it must be sufficiently acidic and capable of being replaced by organic acids. Therefore, the microorganisms are added to an inorganic acid solution to allow them to grow. Optionally, the inorganic acid solution may include hydrochloric acid, nitric acid, phosphoric acid, perchloric acid, etc. For example, in this embodiment, the inorganic acid solution used is hydrochloric acid, phosphoric acid, or perchloric acid.

[0027] In some embodiments, the microorganisms used are specific microorganisms that react biochemically with only a single mineral, including: mesophilic bacteria, moderately thermophilic bacteria, thermophilic bacteria, etc. Optionally, the microorganisms used may include: *Thiobacillus ferrooxidans*, *Thiobacillus thiooxidans*, *Microspirochetes ferrooxidans*, *Bacillus sulfideus*, *Acidophilus oxidans*, etc.

[0028] In some embodiments, in step S20, when extracting minerals from natural ore using an extractant to obtain an inorganic salt solution of the minerals, the extractant obtained in step S10 can be sprayed onto the natural ore, allowing microorganisms to absorb the mineral components in the natural ore and produce a biochemical reaction, thereby metabolizing and producing a mineral solution. That is, under suitable environmental conditions, microorganisms obtain the energy needed for their growth during the biochemical reaction of minerals in the natural ore, while simultaneously metabolizing and producing a mineral solution. Finally, the mineral solutions metabolized by these microorganisms are collected to obtain an inorganic salt solution containing minerals.

[0029] In this embodiment, the microorganisms used can metabolize natural mineral solutions. These natural mineral solutions can flow down from the natural ore along with the acidic extract. Collecting these natural mineral solutions yields an inorganic salt solution containing natural minerals.

[0030] For example, in this embodiment, the natural minerals used contain minerals or trace elements that are beneficial to the growth and health of living organisms. The natural minerals include at least one of maifanite, longevity stone, spodumene, celestite, woodfish stone, vermiculite, and mica.

[0031] In some embodiments, to increase the mineral concentration in the obtained inorganic salt solution, the collected inorganic salt solution metabolized by microorganisms can be sprayed onto the natural ore, so that the minerals metabolized by microorganisms are collected into the inorganic salt solution, thereby increasing the mineral concentration. The inorganic salt solution flowing down from the natural ore is then collected, and this cycle of spraying and collecting the inorganic salt solution is repeated until the metal ion concentration in the inorganic salt solution reaches a predetermined level.

[0032] Figure 2A schematic diagram of a process for the wet extraction of minerals from natural ores according to an embodiment of the present invention is shown. Please refer to [link / reference]. Figure 2 The natural ore is placed in reaction vessel 1, and an extraction solution is introduced into reaction vessel 1 so that the extraction solution can be sprayed onto the natural ore. Microorganisms in the extraction solution metabolize the minerals in the natural ore, and the resulting mineral inorganic salt solution flows to the bottom of reaction vessel 1 with the extraction solution. A collection tank 2 is provided at the bottom of reaction vessel 1 to collect the mineral inorganic salt solution at the bottom of reaction vessel 1.

[0033] Figure 3 A schematic diagram of a reaction tower for microbial extraction of minerals from natural ores according to an embodiment of the present invention is shown. Please refer to [link / reference]. Figure 3 In some embodiments, ore 13 can be placed in reaction tower 10, and then an extractant can be fed into the reaction tower 10 from top to bottom, spraying the extractant onto the ore 13 inside the reaction tower 10. Microorganisms in the extractant absorb the minerals in the ore 13 and undergo biochemical reactions to metabolize the minerals. The minerals metabolized by the microorganisms flow to the bottom of the reaction tower 10 with the extractant. A liquid collection section 20 is provided at the bottom of the reaction tower 10 to collect the mineral-containing extractant at the bottom of the reaction tower 10. If the mineral concentration in the solution collected in the liquid collection section 20 does not reach a predetermined standard, it is pumped back to the top of the reaction tower 10 using a circulation pump 30. The spraying operation is repeated several times until the mineral concentration in the solution collected in the liquid collection section 20 reaches the predetermined standard, finally obtaining an inorganic salt solution of minerals.

[0034] This embodiment utilizes a microbial wet extraction process to selectively extract natural minerals and trace elements from natural ores. By leveraging the biochemical reactions of microorganisms on the minerals in the natural ores, the minerals are selectively extracted, resulting in an inorganic salt solution containing natural minerals and trace elements. This microbial wet extraction method eliminates the need for high temperatures, high pressures, and strong acids, allowing for the selective extraction of natural minerals and trace elements from natural ores. It is safe, efficient, and energy-saving. The preparation method described in this embodiment can efficiently extract natural minerals and trace elements from natural ores, and it is low-cost, highly efficient, and safe.

[0035] The following is combined Figure 3 The structure of the reaction tower 10 provided in the embodiments of this application will be further described.

[0036] The reaction tower 10 provided by the present invention includes a reaction tower body 11 and a plurality of sieve plates 12. The plurality of sieve plates 12 are detachably disposed at different heights along the vertical direction of the reaction tower body 11, thereby dividing the reaction tower body 11 into multiple spaces. Ore 13 is disposed on the sieve plates 12, and liquid entering the reaction tower 10 is sprayed from top to bottom. A filter screen is disposed above each layer of sieve plates 12 to prevent fine ore from falling onto the lower sieve plates 12. A load-bearing groove 15 is provided on the reaction tower body 11, and the sieve plates 12 are detachably fixed to the reaction tower body 11 through the load-bearing groove 15.

[0037] In some embodiments, a plurality of feed ports 16 are provided on both sides of the reaction tower body 11. The feed ports 16 are disposed between each sieve plate 12. The feed ports 16 can be sealed by a sealing plate 19. The sieve plates 12 can be installed from the feed ports 16, and the ore 13 can also be added to the sieve plates 12 inside the reaction tower body 11 from the feed ports 16. The feed ports 16 can also serve as discharge ports.

[0038] In some embodiments, the reaction tower body 11 is a closed structure, and an exhaust valve 14 is provided on the reaction tower body 11, and a temperature measuring device 17 and a pressure measuring device 18 are provided inside the reaction tower.

[0039] In some embodiments, the sieve plate 12 is configured to be foldable, thereby effectively reducing the spacing between each sieve plate. Without increasing the overall height of the reaction tower 10, the number of sieve plates 12 in the reaction tower 10 is increased to increase the number of reaction stages and achieve better reaction results. At the same time, the difficulty of installing and disassembling the sieve plate 12 is also reduced.

[0040] In some embodiments, both the reaction tower body 11 and the sealing plate 19 can be made of stainless steel. The sealing plate 19 is connected to the reaction tower body 11 by fixing bolts, and a sealing gasket is connected between the sealing plate and the reaction tower body. The sealing gasket can be made of polytetrafluoroethylene (PTFE) as the sealing material to seal the feed port 16 to prevent the leakage of acidic liquid. During the feeding or unloading process, the fixing bolts are removed, and the sealing plate 19 is removed using the handles on both sides. The feeding and unloading operations are completed by means of a loader for feeding, a bulldozer for unloading, etc. After the feeding or unloading process is completed, the sealing plate 19 is reinstalled and fixed with fixing bolts.

[0041] In this embodiment, the reaction tower 10 is designed as a square column and is made of corrosion-resistant stainless steel. The sieve plate 12 inside the reaction tower body 11 is designed as a foldable square, made of stainless steel, and 5-10 cm thick. Stainless steel handles are welded to both sides of the sealing plate 19 to facilitate disassembly of the sealing plate during the feeding and unloading process.

[0042] The following is combined Figure 3 The working method of the reaction tower 10 provided in the embodiments of this application will be further explained.

[0043] Open valves 106 and 108, start the transfer pump 107, and pump the acidic extract 104 from the acidic extract preparation tank 103 through the pipeline 21 to the top of the reaction tower 10. It is then fed into the reaction tower 10 through the top opening 23 to spray the ore 13 in the reaction tower 10.

[0044] A valve 112 can be installed at the opening 23 of the pipeline 21 near the reaction tower 10, and a valve 109 can also be installed at the pipeline 21 near the transfer pump 107, to control the opening and closing of the pipeline.

[0045] The acidic extract 104 flows from top to bottom through the multiple layers of ore 13 in the reaction tower 10 to the bottom of the reaction tower 10, where a liquid collection section 20 is provided. In some embodiments, the liquid obtained after spraying the ore 13 can be collected through the liquid collection section 20, or the liquid can be returned to the top of the reaction tower 10 via the circulation pump 30 through the pipeline 22, repeating the previous spraying operation several times, thereby continuously spraying and collecting.

[0046] Valves 113, 115, and 117 are installed at multiple points along pipeline 22 to control the opening and closing of pipeline 22. A circulation pump 30 can also be installed on pipeline 22 to transport the liquid at the bottom of reaction tower 10 to the top of reaction tower 10. The circulation pump 30 is located between valves 115 and 117.

[0047] Furthermore, a branch line is provided on pipeline 22, and the opening and closing of the pipeline is controlled by valve 116, which can transport the finally obtained liquid to subsequent processing. A branch line is also provided on pipeline 22 near the outlet of the liquid collection section 20, and the opening and closing of the pipeline is controlled by valve 114. This branch line can be used to sample the solution to determine whether the solution has reached a predetermined concentration. For example, the solution in the liquid collection section 20 at the bottom of the reaction tower 10 can be sampled, and when the predetermined concentration is reached, the solution can be transported to the subsequent collection tank 40 for further processing.

[0048] In addition, a cooling water tank 101 is installed on pipeline 21, which contains cooling water 102. The opening and closing of the cooling water tank 101 is controlled by valve 105 so that cooling water can be injected into the reaction tower 10 in an emergency, thereby reducing the temperature inside the reaction tower and diluting the concentration of the acidic extract. For example, if the temperature inside the reaction tower 10 exceeds the safety limit, the circulation of the acidic extract is stopped, and valve 105 is opened to inject cooling water 102 into the reaction tower 10 until the temperature inside the reaction tower 10 returns to normal. Furthermore, if the concentration of the acidic extract becomes too low due to the addition of cooling water 102, new acidic extract 104 can be added from the acidic extract preparation tank 103.

[0049] In some embodiments, the reaction tower for microbial extraction of minerals from natural ores can be mechanized to reduce labor costs, minimize hazards, and increase production efficiency. See also Figure 10 , Figure 10 A schematic diagram of a reaction tower mechanized operation according to an embodiment of the present invention is shown.

[0050] Specifically, the reaction tower 10 is equipped with elevators 300 on both sides of the feed port 16. The elevators 300 control the lifting of the lifting platform 500, which is used to park the loader 400. The loader 400 has a tipping bucket 401 for holding natural ore. When adding natural ore to the reaction tower 10, the natural ore is placed in the tipping bucket 401 of the loader 400, which is then parked on the lifting platform 500. The elevators 300 raise the lifting platform 500 to a position level with the feed port (discharge port) 200 of the reaction tower 10. The loader 400 then pours the material from the feed port (discharge port) 200 onto the screen plate 12 of the reaction tower 10. The elevators 300 then lower the lifting platform 500 to the ground and close the feed port (discharge port) 200, thus completing the feeding process.

[0051] During unloading, the feed port (discharge port) 200 and discharge port 600 of the reaction tower 10 are opened simultaneously. A loader 400 on one side is raised by a lift 300 on a lifting platform 500 to below the feed port (discharge port) 200, with its tipping bucket 401 aligned with the feed port (discharge port) 200 and flush with the screen plate 12. On the other side, a bulldozer 700 on a lifting platform 800 is raised by a lift 900 to the discharge port 600, aligned with the discharge port 600, and with its bulldozer blades 710 flush with the bottom of the screen plate 12. Start bulldozer 700 to push the reacted natural ore on screen plate 12 into the tipper 401 of loader 400 on the other side. After completing the above operation, bulldozer 700 and loader 400 are lowered to the ground, and the feed port (discharge port) 200 and discharge port 600 are closed, thus completing the unloading process. Repeat the above operation N times to complete the mechanized operation process of the entire reaction tower.

[0052] In some embodiments, step S30, when performing organic replacement treatment on the inorganic salt solution of the mineral, includes: adding an organic acid and an organic solvent to the inorganic salt solution of the mineral and mixing them, so that the organic acid reacts with the inorganic salt solution to obtain a mixture containing organic acid salts of the mineral. The organic acid salts are insoluble in the organic solvent, so that the organic acid salts form organic acid salt precipitates in the organic solvent. This embodiment utilizes the characteristic that organic acid salts are soluble in water but insoluble in organic solvents. By adding organic acid and organic solvent to the inorganic salt solution, the organic acid reacts with the inorganic salt to generate organic acid salt precipitates, thereby achieving organic replacement of the inorganic salt, making the mineral organic, and utilizing the natural compatibility and affinity of organic matter with living organisms, facilitating full absorption by living organisms.

[0053] Specifically, in the organic displacement reaction of an inorganic salt solution of minerals, an organic acid can be added first to the inorganic salt solution to displace the inorganic acid, resulting in an organic acid salt solution containing the minerals. Then, taking advantage of the insolubility of organic acid salts in organic solvents, a measured amount of organic solvent is added to the organic acid salt solution containing the minerals to form an organic acid salt precipitate, ultimately yielding a mixture of the organic acid salt containing the minerals, inorganic acid, and organic solvent.

[0054] In some embodiments, the organic acid in the inorganic salt solution containing minerals needs to meet the following three conditions: it must be able to displace the inorganic acid anion from the inorganic salt; the resulting organic acid salt must be soluble in water but insoluble in conventional organic solvents; and the resulting mixture containing mineral organic acid salts must be able to separate the mineral organic acid salts. The separation methods include chemical methods, physical methods, membrane separation methods, etc.

[0055] For example, in this embodiment, the organic acid used may be at least one of citric acid, salicylic acid, gluconic acid, malic acid, sorbic acid, tartaric acid, oxalic acid, formic acid, and maleic acid, and the organic solvent used may be at least one of ethanol, diethyl ether, acetone, and chloroform.

[0056] In some embodiments, when performing organic replacement treatment on an inorganic salt solution of minerals, such as Figure 4 As shown, the mineral inorganic salt solution that has reached a predetermined concentration in the liquid collection section 20 at the bottom of the reaction tower 10 can be transferred to the collection tank 40 first, so that the inorganic salt solution of the mineral can be organically replaced in the subsequent process. At the same time, the liquid collection section 20 at the bottom of the reaction tower 10 can continue to collect the inorganic salt solution of the mineral.

[0057] In some embodiments, the inorganic salt solution of minerals can be purified before organic replacement treatment to obtain a purified inorganic salt solution of minerals, thereby filtering out impurities in the inorganic salt solution and reducing the loss of minerals in the solution.

[0058] In some embodiments, a purification device can be used to purify the inorganic salt solution. Specifically, Figure 4 A schematic diagram of a purification device for inorganic salt solutions according to an embodiment of the present invention is shown. Please refer to [link / reference]. Figure 4 An inorganic salt solution transfer pump 50 connects the collection tank 40 and the purification device 60, allowing the inorganic salt solution of the minerals in the collection tank 40 to be pumped into the purification device 60. The purification device 60 is lined with quartz sand of varying particle sizes as a filter layer 61, with the particle size of the quartz sand increasing from top to bottom. The inorganic salt solution of the minerals enters through the bottom inlet 62 of the purification device, is filtered through the filter layer 61, and exits through the top outlet 63 of the purification device 60.

[0059] Since the filtered impurities remain in the filter layer 61 and can clog it, the purification device 60 needs to be cleaned regularly. During cleaning, the water flows in the opposite direction to the inorganic salt solution. A flushing water valve 64 is installed at the top of the purification device 60, and a flushing water discharge valve 65 is connected to the inlet 62 at the bottom of the device. Water enters from the top of the purification device 60 and exits from the bottom inlet 62 along with the impurities remaining in the filter layer 61, thus cleaning the purification device 60 to ensure filtration efficiency and continuous operation.

[0060] In some embodiments, a load-bearing sieve plate 66 is provided inside the purification device, on which quartz sand accumulates. The load-bearing sieve plate 66 is positioned above the inlet 62 to prevent quartz sand from clogging the inlet 62. An inlet pressure gauge 51 is connected between the inorganic salt solution transfer pump 50 and the inlet 62 to monitor the inlet pressure of the inorganic salt solution. A pressure gauge 67 is connected to the top of the purification device 60 to monitor the solution pressure inside the purification device.

[0061] Figure 5 A schematic diagram of a displacement apparatus for organic displacement treatment of inorganic salt solutions of minerals according to an embodiment of the present invention is shown. Please refer to [link / reference]. Figure 5 In some embodiments, a displacement device 70 can be used to perform organic displacement treatment on an inorganic salt solution of minerals. The displacement device 70 includes a reaction vessel 76, an inorganic salt solution storage tank 702, an organic acid storage tank 704, and an organic solvent storage tank 706. The inorganic salt solution storage tank 702, organic acid storage tank 704, and organic solvent storage tank 706 are respectively connected to the inlet of the reaction vessel 76. In some embodiments, the inorganic salt solution storage tank 702, organic acid storage tank 704, and organic solvent storage tank 706 are respectively connected to the inlet of a feed pump 708, and the outlet of the feed pump 708 is connected to the inlet of the reaction vessel 76.

[0062] In some embodiments, a stirrer is installed in the reaction vessel 76. The stirrer includes a drive motor 77, a stirring rod 75, and a stirring blade 71. The drive motor 77 is installed on the top of the reaction vessel 76. One end of the stirring rod 75 is connected to the drive motor 77 and extends through the container wall into the reaction vessel 76. The stirring blade 71 is fixedly connected to the other end of the stirring rod 75 away from the drive motor 77. The drive motor 77 is used to drive the stirring rod 75 and the stirring blade 71 to rotate, so as to stir and mix the solution in the reaction vessel 76.

[0063] In some embodiments, an outlet 72 is formed at the bottom of the reaction vessel 76, and the outlet 72 is connected to a discharge pump 707, which is used to extract the organic acid salt precipitate at the bottom of the reaction vessel 76. Specifically, the discharge pump 707 can be a slurry pump to facilitate the transport of a solid-liquid mixture containing organic acid salt precipitate and inorganic acid and organic solution.

[0064] In some embodiments, a pressure reducing valve 78 is provided on the top of the reaction vessel 76. The pressure reducing valve 78 is used to open when the gas pressure inside the reaction vessel 76 is too high, so as to release gas from the reaction vessel 76 and avoid safety hazards caused by excessive pressure inside the reaction vessel 76.

[0065] During the organic substitution process, the mineral inorganic salt solution 701 from the inorganic salt solution storage tank 702 is first pumped into the reaction vessel 76 through the inlet 74 via the feed pump 708. Then, the organic acid 703 from the organic acid storage tank 704 and the organic solvent 705 from the organic solvent storage tank 706 are respectively pumped into the reaction vessel 76 through the inlet 74 via the feed pump 708, resulting in a mixture 73. The agitator in the reaction vessel 76 is started and put into operation to thoroughly stir the mixture 73. The liquid state inside the reaction vessel 76 is observed. If the solution becomes cloudy, it indicates the formation of organic acid salts. After stirring for a predetermined time to ensure the inorganic salts react completely, the agitator is turned off, and the mixture is discharged from the outlet 72 via the discharge pump 707 to obtain a mixture of organic acid salts containing minerals.

[0066] In some embodiments, the liquid carried by the displacement device is mostly inorganic or organic acid, which is highly corrosive. Therefore, all components of the displacement device in which liquid flows are made of materials resistant to strong acids and corrosion. For example, in this embodiment, the reaction vessel in the displacement device is made of stainless steel with a graphite inner wall to reduce the corrosion of the reaction vessel wall by the acid. The stirring rod 75 and stirring blade 71 inside the reaction vessel are both made of molybdenum-containing stainless steel that is resistant to strong corrosion.

[0067] In some embodiments, step S40, when separating the mixture of organic acid salts containing minerals, includes: separating the mixture of organic acid salts containing minerals to obtain a precipitate of the organic acid salts of the minerals and a mixed solution of an organic solvent and an inorganic acid; and drying the precipitate of the organic acid salts of the minerals to obtain mineral powder. In this embodiment, by separating and drying the precipitate of the organic acid salts of the minerals to obtain mineral powder, the method offers higher safety compared to acidic liquid products and facilitates storage and transportation.

[0068] In some embodiments, when separating the mixture of organic acid salts containing minerals, the mixture of organic acid salts containing minerals can first be subjected to solid-liquid separation to obtain a slurry of organic acid salts containing minerals, and then the slurry of organic acid salts can be centrifuged to obtain a precipitate of organic acid salts containing minerals, thereby minimizing the liquid in the precipitate of organic acid salts.

[0069] Specifically, the mixture containing mineral organic acid salts obtained in step S30 can be allowed to stand for a predetermined time until obvious stratification occurs, at which point the stratification is separated. The upper layer of the organic acid salt mixture is a mixed solution of organic solvent and inorganic acid, while the lower layer is an organic acid salt slurry. The lower organic acid salt slurry is collected and centrifuged to quickly precipitate the minerals as organic acid salts, increasing the yield of minerals in the precipitate. Simultaneously, the upper mixed solution of organic solvent and inorganic acid is collected for recycling, achieving the reuse of both the organic solvent and inorganic acid solution.

[0070] Figure 6 A schematic diagram of a separation apparatus for separating a mixture containing mineral organic acid salts according to an embodiment of the present invention is shown. Please refer to [link / reference]. Figure 6 In some embodiments, a separation device 80 can be used to separate mixtures containing mineral organic acid salts. The separation device 80 includes a settling tank 81, a centrifuge 82, and a buffer tank 83.

[0071] In some embodiments, the settling tank 81 is connected to the discharge pump 707 connected to the outlet 72 of the displacement device 70. The settling tank 81 is used to collect a mixture containing mineral organic acid salts. During solid-liquid separation, the mixture containing mineral organic acid salts output from the outlet 72 of the displacement device 70 is pumped into the settling tank 81 via the discharge pump 707. The mixture containing mineral organic acid salts undergoes gravity settling, and after a predetermined settling time, obvious stratification occurs, with the upper layer being a mixed solution 804 and the lower layer being an organic acid salt slurry 803.

[0072] In some embodiments, the settling tank 81 is provided with a slurry outlet and a solution outlet. The slurry outlet is located at the bottom of the settling tank, and the solution outlet is located above the slurry outlet. A feed pump 802 is connected between the slurry outlet and the feed port 806 at the top of the centrifuge 82. The feed pump 802 is used to transport the lower layer of organic acid salt slurry in the settling tank 81 into the centrifuge 82. A transfer pump 801 is connected between the solution outlet and the buffer tank 83. The transfer pump 801 is used to transport the upper layer of mixed solution in the settling tank 81 into the buffer tank 83.

[0073] After the mixture in the settling tank 81 has clearly separated into layers, the lower layer of organic acid salt slurry 803 is transported by the feed pump 802 and fed into the centrifuge 82 through the feed port 806 for centrifugal separation, so as to dehydrate and desolventize the organic acid salt slurry 803. The material separated by the centrifuge is the organic acid salt precipitate of minerals.

[0074] In this embodiment, after the lower layer of organic acid salt slurry 803 in the settling tank 81 is transported to the centrifuge 82, the upper layer of mixed solution 804 is transported to the buffer tank 83 via the transfer pump 801, so as to avoid the lower layer of organic acid salt slurry 803 being carried into the buffer tank 83 when the upper layer of mixed solution 804 is transported first, thus avoiding the loss of organic acid salt.

[0075] like Figure 6 As shown, the centrifuge 82 includes a housing 821, a centrifugal motor 822, a sieve cylinder 823, and a filter cloth 824. A feed port 806 is formed at the top of the housing. The sieve cylinder 823 is rotatably disposed within the housing 821 and is coaxially arranged with the housing 821. The centrifugal motor 822 is installed at the bottom of the housing 821 and drives the sieve cylinder 823 to rotate, providing centrifugal force to the mixture within the sieve cylinder 823, thereby causing organic acid salt precipitation, dehydration, and desolvation. The filter cloth 824 is connected to the inner surface of the sieve cylinder 823, thus obtaining organic acid salt precipitate through centrifugal filtration.

[0076] In some embodiments, a solution chamber is formed between the inner surface of the sieve cylinder 823 and the housing 821. After centrifugation, the mixture in the sieve cylinder 823 is thrown into the solution chamber, while organic acid salts precipitate and deposit on the filter cloth 824 to form a filter cake 805. In some embodiments, a liquid outlet 807 is provided on the side wall of the housing, and the liquid outlet 807 is connected to the buffer tank 83 so that the mixed solution in the solution chamber separated by the centrifuge 82 is transported to the buffer tank 83 through the liquid outlet 807.

[0077] In some embodiments, when drying the organic acid salt precipitate of minerals, the precipitate can be first pulverized, and then the pulverized organic acid salt can be flash-dried to further dehydrate and desolventize the organic acid salt, avoiding residual liquid in the organic acid salt. Furthermore, in this embodiment, flash evaporation of the organic acid salt, i.e., evaporation under negative pressure, allows the liquid in the organic acid salt precipitate to evaporate at a lower temperature, avoiding high-temperature operation and improving production safety.

[0078] In some embodiments, the organic acid salts of minerals can be particle size classified during flash evaporation. Specifically, organic acid salt particles smaller than a predetermined particle size are collected, while those larger than the predetermined particle size are re-crushed and flash-dried until all organic acid salts of the minerals are dried. In this embodiment, particle size classification of organic acid salt particles is performed simultaneously with flash evaporation, thereby ensuring that the collected organic acid salt particles are small and that the organic acid salts are thoroughly dried.

[0079] Specifically, flash drying uses negative pressure to transform wet materials into powdery or granular dry materials. When drying organic acid salt precipitates of minerals, the precipitates are first pulverized to increase the contact area between the organic acid salt particles and the drying gas. The pulverized organic acid salts are then flash-dried. During flash drying, particles smaller than a predetermined size are collected first, while larger particles are pulverized and flash-dried again until all particles reach the predetermined size standard. This ensures thorough pulverization of the organic acid salt particles, resulting in better drying effects, increased drying efficiency, and cost savings.

[0080] Figure 7 A schematic diagram of a drying apparatus for drying mineral organic acid salt precipitates according to an embodiment of the present invention is shown. Please refer to [link / reference]. Figure 7 In some embodiments, a drying apparatus 90 can be used to dry the organic acid salt precipitate of minerals. The drying apparatus 90 includes a flash dryer 91, an air compressor 96, a separator 97, and a feeder 98.

[0081] The feeder 98 is located near the bottom of the flash dryer 91 and is connected to the flash dryer 91. The feeder 98 is used to transport mineral organic acid salt precipitates into the flash dryer 91. The feeder 98 is provided with a feed inlet 901, and a conveyor belt 99 is provided between the feed inlet 901 and the centrifuge 82. The filter cake 805 separated by the centrifuge 82 is sent to the feed inlet 901 via the conveyor belt 99, and then fed into the feeder 98 and conveyed into the flash dryer 91. In some embodiments, the feeder 98 is a screw feeder, which uses the rotational motion of the screw to transport the mineral organic acid salts. At the same time, the screw can also perform a certain amount of stirring and mixing of the mineral organic acid salts, thereby achieving uniform material conveying.

[0082] In some embodiments, a pulverizer 92 is provided at the bottom of the flash dryer 91, and a feeder 98 is located above the pulverizer 92. A blower 93 is also provided at the bottom of the flash dryer 91, which is used to introduce high-temperature airflow into the flash dryer 91. During the flash drying process, the pulverizer 92 is started to operate at high speed, and at the same time, the blower 93 is started to introduce high-temperature airflow into the flash dryer 91. The feeder 98 delivers mineral organic acid salts into the flash dryer 91. The mineral organic acid salts delivered into the flash dryer 91 are pulverized into particles by the pulverizer 92, and the pulverized organic acid salt particles are blown to the top of the flash dryer 91 by the high-temperature airflow.

[0083] In some embodiments, a particle size classifier 94 is provided at the top of the flash dryer 91, and the particle size classifier 94 is located inside the flash dryer 91. A sieve plate 95 is formed at the bottom of the particle size classifier 94, and the pore size of the sieve plate 95 is configured to allow organic acid salt particles of a predetermined particle size to pass through, while blocking organic acid salt particles larger than the predetermined particle size. A discharge port 902 is formed at the top of the particle size classifier 94, and the discharge port 902 is connected to a cyclone separator 97.

[0084] During the flash drying process, the pulverized organic acid salt particles are blown to the top of the flash dryer 91 by a high-temperature airflow. Organic acid salt particles smaller than the predetermined particle size are screened out by the sieve plate 95 and blown out of the flash dryer 91 through the discharge port 902 by the high-temperature airflow. The organic acid salt particles rotate due to the airflow and enter the cyclone separator 97 tangentially. The mineral organic acid salt precipitate entering the flash dryer 91 undergoes flash drying and cyclone separation, separating the organic acid salt particles from the liquid and achieving the drying of the organic acid salt particles. Organic acid salt particles larger than the predetermined particle size are blocked by the sieve plate 95 and fall back to the bottom of the flash dryer 91. They are then pulverized by the pulverizer 92 and blown by the airflow generated by the blower 93 to the particle size classifier 94, where they are screened again by the sieve plate 95 to determine if they meet the predetermined particle size standard. This cycle is repeated until all organic acid salt particles meet the predetermined particle size standard, thus completing the drying process for all materials.

[0085] In some embodiments, an outlet is formed at the bottom of the cyclone separator 97, and a collection tank 903 is also provided below the cyclone separator 97. The collection tank 903 is correspondingly arranged to the outlet of the cyclone separator 97 and is used to collect dried mineral organic acid salt particles. During the flash drying process, the organic acid salt particles entering the cyclone separator 97 fall into the collection tank 903 below under the action of gravity, thereby realizing the collection of dried mineral organic acid salts.

[0086] In this embodiment, the top of the flash dryer 91 is also connected to an air compressor 96. The air compressor 96 is used to compress the internal air during the operation of the flash dryer 91, providing a negative pressure environment inside the flash dryer 91 so that the material does not need to complete the drying process in a high-temperature environment, thereby saving costs and improving safety. In some embodiments, the flash dryer 91 is connected to a pressure sensor for real-time monitoring of the internal air pressure of the flash dryer 91, so as to control the air compressor 96 according to the monitored air pressure, so that the flash dryer 91 is maintained at a predetermined pressure.

[0087] In some embodiments, after drying the organic acid salt precipitate of the mineral, the resulting organic acid salt particles can be ground to obtain mineral powder. Optionally, the organic acid salt particles of the mineral can be ground according to a predetermined standard using a ball mill to obtain a uniform mineral powder for mixing and compounding. For example, the organic acid salt particles of the mineral can be ball-milled to obtain mineral powder with a particle size of less than 500 mesh.

[0088] In some embodiments, in step S10, microorganisms are added to an inorganic acid solution to obtain an extract. The microorganisms used in this process are specific microorganisms that only react biochemically with a single mineral element. That is, the microorganisms only extract a single mineral from the natural ore. Therefore, in step S40, a single mineral powder is obtained.

[0089] In some embodiments, various microorganisms can be used to extract different minerals from natural ores to obtain mineral powders of various single elements. These mineral powders can then be blended to obtain multi-element mineral powders, thereby meeting different production needs. For example, various microorganisms can be used to extract elements such as Ca, Mg, Fe, Al, Cu, Ge, Se, Sr, Li, and Zn from natural ores to obtain mineral powders of each element. These mineral powders can then be blended according to actual needs to obtain multi-element mineral powders.

[0090] Figure 8 A schematic diagram of a compounding apparatus for compounding multiple mineral powders according to an embodiment of the present invention is shown. Please refer to [link / reference]. Figure 8In some embodiments, a compounding device 110 can be used to compound multiple mineral powders. The compounding device 110 includes: multiple storage silos 1106, a homogenizing compounding machine 111, a conveying pump 1103, a mixer 1101, a conveying pump 1104, and a finished product storage silo 1108. The multiple storage silos 1106 are used to store mineral powders of different elements; the multiple storage silos 1106 are connected to the conveying pump 1103, and the conveying pump 1103 is connected to the feeding port 1105 of the compounding machine 111; the mixer 1101 is disposed in the homogenizing compounding machine 111 and is used to stir the mineral powder added to the homogenizing compounding machine 111; the bottom of the homogenizing compounding machine 111 has a discharge port 1102, which is connected to the finished product storage silo 1108, and the conveying pump 1104 is connected between the discharge port 1102 and the finished product storage silo 1108. In some embodiments, a metering pump 1107 is connected between each storage bin 1106 and the conveying pump 1103 for metering the mineral powder conveyed to the homogenizing and compounding machine 111. The conveying pumps 1103 and 1104 can be pneumatic conveying pumps, and the metering pump 1107 can be a screw metering pump.

[0091] In the process of compounding mineral powders, multiple mineral powders are quantitatively added from storage silos 1106 into a pneumatic conveying pipeline by metering pump 1107 according to a predetermined ratio. Then, they are fed into a homogenizing compounding machine 111 through feeding port 1105 by conveying pump 1103. The homogenizing compounding machine 111 is equipped with a mixer 1101. The homogenizing compounding machine 111 is started to operate at high speed to mix the multiple mineral powders within it. The uniformly mixed multiple mineral powders are output from discharge port 1102 and conveyed to finished product storage silos 1108 by conveying pump 1104 to obtain multi-element mineral powder.

[0092] The mixer 1101 is configured to rotate at high speed, and can also be configured to rotate intermittently and in reverse direction to achieve optimal mixing of various mineral powders. In some embodiments, the mixer 1101 is a propeller mixer.

[0093] In some embodiments, the homogenizer 111, storage silo 1106, metering pump 1107, conveying pump, pneumatic conveying pipeline, finished product storage silo 1108, etc. are all made of food-grade stainless steel to avoid impurities entering the mineral powder.

[0094] In some embodiments, after separating the mixture containing mineral organic acid salts, the resulting mixed solution of organic solvent and inorganic acid can be further separated to obtain an organic solvent and / or inorganic acid solution. The organic solvent is then added to the inorganic salt solution of the minerals for organic displacement to recycle the organic solvent; microorganisms are added to the inorganic acid solution to obtain an extract for recycling the inorganic acid solution, thereby achieving full utilization of the organic solvent and inorganic acid solution, saving production costs and improving efficiency.

[0095] In some embodiments, when separating organic solvent and inorganic acid in a mixed solution, to obtain organic solvent, an alkaline neutralizing agent may be added to the mixed solution to neutralize the inorganic acid and generate an inorganic salt; the neutralized mixed solution is then evaporated to evaporate the organic solvent and water in the mixed solution; the evaporated organic solvent and water are condensed to obtain a condensate of organic solvent and water; the condensate of organic solvent and water is then separated to finally obtain the organic solvent.

[0096] Specifically, to separate the organic solvent from the mixed solution, an equal amount of alkaline neutralizing agent can be added to the mixed solution. This causes the inorganic acid in the mixed solution to neutralize with the alkaline neutralizing agent, generating an inorganic salt solution. This inorganic salt solution is difficult to evaporate along with the organic solvent and water, thus preventing the inorganic acid, water, and organic solvent from evaporating together and making the mixture difficult to separate. The neutralized mixed solution is then evaporated, removing the organic solvent and water, leaving the inorganic salt solution. The evaporated organic solvent and water are then condensed to obtain a condensate. Finally, the condensate is separated to obtain a higher concentration of organic solvent, avoiding the negative impact of excessive water content on the effectiveness of the organic solvent during recycling and preventing water from affecting its reuse.

[0097] In some embodiments, membrane separation can be used to separate water and organic solvents. In some embodiments, molecular sieve membrane separation can be used to separate water and organic solvents. A molecular sieve membrane is a membrane material that can achieve molecular sieving. It can filter out molecules smaller than its pore diameter to achieve separation. Compared to traditional distillation separation, molecular sieve membrane separation is simpler, more efficient, energy-saving, and provides more stable separation results.

[0098] For example, NaA molecular sieve ceramic membranes can be used for separation. These membranes use ceramic tubes as a carrier, with a layer of molecular sieves synthesized on their surface to form a uniform molecular sieve membrane. NaA molecular sieve ceramic membranes offer advantages such as high temperature resistance, chemical corrosion resistance, high mechanical strength, high throughput, and high separation coefficient. They are also energy-efficient, with an energy efficiency only one-fifth that of distillation separation. Furthermore, separation using NaA molecular sieve ceramic membranes is convenient, environmentally friendly, and provides stable separation results. The separation process does not require the addition of any extractants or other substances, making it particularly suitable for the purification and dehydration of high-concentration ethanol.

[0099] Figure 9 A schematic diagram of a molecular sieve membrane separation apparatus for separating condensates of organic solvents and water according to an embodiment of the present invention is shown. Please refer to... Figure 9 In some embodiments, a molecular sieve membrane separation device 100 can be used to separate the condensate of organic solvents and water. The molecular sieve membrane separation device 100 includes a housing, a molecular sieve membrane carrier 1002, a NaA molecular sieve membrane 1001, and a circulation pump 1003. The housing has an inlet 1005, a first outlet 1004, and a second outlet 1006. The circulation pump 1003 is connected between the inlet 1005 and the first outlet 1004. The molecular sieve membrane carrier 1002 is disposed within the housing, and the NaA molecular sieve membrane 1001 is disposed on the surface of the molecular sieve membrane carrier 1002. The molecular sieve membrane carrier 1002 is a ceramic tube, and the NaA molecular sieve membrane 1001 has a pore diameter less than or equal to 0.42 nm, which is larger than water molecules but smaller than most organic matter, thus facilitating the separation of organic matter and water.

[0100] In this embodiment, the separation of a mixture of water and ethanol is taken as an example, combined with... Figure 9 A detailed explanation follows. Before separating the mixture of water and ethanol, it must first be purified using a purification device to filter out fine impurities, prevent clogging of the molecular sieve membrane, and ensure the separation effect.

[0101] During separation, the purified mixture is pumped into the inlet 1005 of the molecular sieve membrane separation device 100 via the circulation pump 1003. After filtration through the NaA molecular sieve membrane 1001, the mixture is initially separated. The separated water is output from the first outlet 1004 of the molecular sieve membrane separation device 100, and the separated ethanol solution is output from the second outlet 1006 of the molecular sieve membrane separation device 100. Both are then pumped back into the inlet 1005 via the circulation pump 1003. This cycle is repeated until the concentration of the separated ethanol reaches a predetermined standard, thereby achieving the separation of the water and ethanol mixture.

[0102] In some embodiments, a sampling valve 1007 is connected to the inlet 1005. During the separation process, the sampling valve 1007 can be opened to sample and detect the separated ethanol. When the concentration of the separated ethanol reaches a predetermined concentration, the ethanol can be output to the replacement device 70 to achieve the reuse of ethanol. When the concentration of the separated ethanol is less than the predetermined concentration, the ethanol is pumped back into the inlet 1005 to continue the separation.

[0103] In some embodiments, the outlet of the circulation pump 1003 can also be connected to the displacement device 70. A delivery valve 1008 is connected to the pipeline between the circulation pump 1003 and the displacement device 70. When the separated ethanol reaches a predetermined concentration, the delivery valve 1008 can be opened to deliver the ethanol to the displacement device 70.

[0104] In some embodiments, when separating organic solvents and inorganic acids in a mixed solution, to obtain an inorganic acid solution, an acidic displacing agent can be added to the unevaporated inorganic salt solution in the mixed solution. The acidic displacing agent reacts with metal ions in the inorganic salt solution to form a precipitate, resulting in a mixture of inorganic acid and precipitate. This mixture is then subjected to solid-liquid separation to finally obtain the inorganic acid solution, thus achieving the recycling of the inorganic acid solution, preventing environmental pollution, and saving production costs. Optionally, a centrifuge can be used to perform solid-liquid separation on the mixture of inorganic acid and precipitate. Specifically, methods such as... Figure 6 The separation is performed using another separation device 80 shown. Furthermore, the separated inorganic acid needs to be purified before use to remove impurities.

[0105] In some embodiments, the solid precipitate remaining after separating the inorganic acid solution can be treated as residue. For example, the solid precipitate can be added to cement at a ratio of 5-10% to make sleepers for use in rail transit construction. This not only treats the waste generated during production but also improves the quality of the sleepers, increasing additional economic benefits.

[0106] In this embodiment, the organic solvent and inorganic acid are separated by first adding an alkaline neutralizing agent to the mixed solution to neutralize it, and then evaporating the neutralized mixed solution. Compared with the simple method of distilling the mixed solution to separate the organic solvent and inorganic acid, this method reduces the separation difficulty and the separation process, so as to make the separation efficiency higher and make it easier to achieve the recycling of organic solvent and inorganic acid.

[0107] Taking a mixture of hydrochloric acid and ethanol as an example, during separation, an alkaline neutralizing agent (e.g., barium hydroxide) can be added to the mixture. The alkaline neutralizing agent reacts with the hydrochloric acid to produce a salt that is difficult to evaporate (i.e., barium chloride) and water. Evaporating this mixture removes water and ethanol, leaving an aqueous solution of the inorganic salt (i.e., barium chloride). The water and ethanol can be separated using a molecular sieve membrane separation device. Further, to obtain hydrochloric acid, a measured amount of sulfuric acid can be added to the aqueous solution of the inorganic salt (i.e., barium chloride) to generate a sulfate precipitate (i.e., barium sulfate). Separating the sulfate precipitate and hydrochloric acid yields hydrochloric acid, thus achieving the separation of hydrochloric acid and ethanol.

[0108] In some embodiments, the reaction tower, displacement device, separation device, drying device, molecular sieve membrane separation device, homogenizing and compounding machine, etc., can be designed in multiple ways according to the actual production process to meet different production needs.

[0109] The preparation method of the mineral powder in this invention is further illustrated below with specific embodiments.

[0110] Example 1

[0111] Figure 11 A schematic diagram of a process for displacement treatment of a mineral inorganic salt solution and separation treatment of a mixture of organic acid salts containing minerals, according to an embodiment of the present invention, is shown below in conjunction with Example 1.

[0112] First, natural zinc sphalerite ore (1-3 cm in diameter) is placed in reaction tower 10. Acidic extract is prepared by adding cultured moderately thermophilic bacteria Microspirochetes ferrooxidans to hydrochloric acid (36% concentration). The prepared acidic extract is sprayed from top to bottom into reaction tower 10, and the dilute solution flowing down is collected at the bottom of reaction tower 10.

[0113] The collected dilute solution is pumped to the top of reaction tower 10 using a circulating pump, and then sprayed from top to bottom again. This cycle of spraying, collecting, and circulating is repeated continuously for 2 hours. After 2 hours, the zinc content in the dilute solution at the bottom of reaction tower 10 is measured. When the zinc content reaches 800 mg / L, it is considered a concentrated solution.

[0114] The obtained concentrate is collected in a collection tank, and then fed into the displacement device 70 for a displacement reaction. The concentrate is then... Figure 11 The inorganic salt solution shown is fed into the displacement apparatus 70 for a displacement reaction. Equal amounts of gluconic acid and ethanol are added to the reaction vessel 76. The gluconic acid is then... Figure 11 The organic acids shown are ethanol as the organic solvent.

[0115] Start the mixer and mix for 30 minutes. Then transfer the mixture to a settling tank and let it stand for 30 minutes. The mixture will separate into layers, with the upper layer being... Figure 11 The inorganic acid and organic solvent shown are used to separate the lower sediment into a centrifuge (82). The centrifuge (82) separates the precipitate (zinc gluconate), which is zinc gluconate. Figure 11 The natural organic minerals shown are then fed into a flash dryer 91 for further drying. The completely dried precipitate (zinc gluconate) is then ground to obtain a solid powder containing natural minerals (zinc gluconate) with a mesh size of less than 500.

[0116] The mixture (a mixture of hydrochloric acid and ethanol) in the upper layer of the reaction vessel is transferred to an evaporator. An equal amount of barium hydroxide is added to the evaporator, and the mixture is stirred for 30 minutes. Evaporation then occurs, and the resulting mixed vapor (water and ethanol) is condensed to obtain a mixture of water and ethanol. After filtration, this mixture is sent to a molecular sieve membrane separation unit 100 for membrane separation. The separated water is discharged on-site; the separated ethanol is returned to the displacement reaction process for continued use.

[0117] The unevaporated barium chloride solution is separated by adding an equal amount of sulfuric acid to form a precipitate (BaSO4). The precipitate is then subjected to solid-liquid separation. The separated precipitate is treated as residue, and the reduced hydrochloric acid is purified and returned to the bio-extraction stage for continued use.

[0118] Example 2

[0119] First, place natural spodumene ore (1-3 cm in diameter) into reaction tower 10. Add cultured thermophilic bacteria Thiobacillus thiocyanate to hydrochloric acid (30% concentration) to prepare an extract. Spray the prepared extract into reaction tower 10 from top to bottom and collect the dilute solution flowing down from the bottom of reaction tower 10.

[0120] The collected dilute solution is pumped to the top of reaction tower 10 using a circulating pump, and then sprayed from top to bottom again. This cycle of spraying, collecting, and circulating is repeated continuously for 2 hours. After 2 hours, the lithium content in the dilute solution collected at the bottom of reaction tower 10 is tested. When the lithium content reaches 450 mg / L, it is considered a concentrated solution and transferred to a collection tank.

[0121] The obtained concentrated solution (a mineral solution containing lithium metal) is fed into displacement apparatus 70 for a displacement reaction. Equal amounts of gluconic acid and ethanol are added to the reaction vessel, and the mixture is stirred for 30 minutes. The mixture is then pumped to a settling tank and allowed to stand for 30 minutes. The lower sediment is then fed into centrifuge 82 to separate the precipitate (lithium gluconate). The precipitate is then further dried in flash dryer 91. The completely dried precipitate (lithium gluconate) is ground to obtain a solid powder containing natural minerals (lithium gluconate) of less than 500 mesh.

[0122] The mixture (a mixture of hydrochloric acid and ethanol) in the upper layer of the reaction vessel is transferred to an evaporator. An equal amount of barium hydroxide is added to the evaporator, and the mixture is stirred for 30 minutes. Evaporation then occurs, and the resulting mixed vapor (water and ethanol) is condensed to obtain a mixture of water and ethanol. After filtration, this mixture is sent to a molecular sieve membrane separation unit 100 for membrane separation. The separated water is discharged on-site; the separated ethanol is returned to the displacement reaction process for continued use.

[0123] Unevaporated barium chloride solution is separated by adding an equal amount of sulfuric acid to form a precipitate (BaSO4). The mixture of the precipitate (BaSO4) and hydrochloric acid is sent to a separation device for solid-liquid separation. The separated precipitate (BaSO4) is treated as residue, and the reduced hydrochloric acid (HCl) is purified and returned to the bio-extraction stage for continued use.

[0124] Example 3

[0125] First, place natural germanium ore (1-3 cm in diameter) into reaction tower 10. Add cultured mesophilic Bacillus sulfide to dilute hydrochloric acid (30% concentration) to prepare an acidic extract. Spray the prepared acidic extract into reaction tower 10 from top to bottom and collect the dilute solution flowing down at the bottom of reaction tower 10.

[0126] The collected dilute solution is pumped to the top of reaction tower 10 using a circulating pump, and then sprayed from top to bottom again. This process of spraying, collecting, and circulating is repeated continuously for 3 hours. After 3 hours, the content of metallic germanium in the dilute solution collected at the bottom of reaction tower 10 is tested. When the content of metallic germanium reaches 500 mg / L, it is considered a concentrated solution and is transferred to a collection tank.

[0127] The obtained concentrated solution (a mineral solution containing germanium) is fed into the displacement apparatus 70 for a displacement reaction. Equal amounts of gluconic acid and ethanol are added to the reaction vessel 76, and the mixture is stirred for 30 minutes. The mixture is then pumped to a settling tank and allowed to stand for 30 minutes. The lower sediment is fed into a centrifuge 82 to separate the precipitate (germanium gluconate). The precipitate is then further dried in a flash dryer 91. The completely dried precipitate (germanium gluconate) is ground to obtain a solid powder containing natural minerals (germanium gluconate) with a mesh size of less than 500.

[0128] The mixture (a mixture of hydrochloric acid and ethanol) in the upper layer of the reaction vessel is transferred to an evaporator. An equal amount of barium hydroxide is added to the evaporator, and the mixture is stirred for 30 minutes to form a mixed solution of barium chloride and ethanol. This solution is then evaporated. The evaporated mixed vapor (water and ethanol) is condensed and collected in a buffer tank. After two stages of filtration—a purification device and a precision filter—the water and ethanol are transferred to a molecular sieve membrane separation unit 100 for membrane separation. The separated water is discharged on-site; the separated ethanol is returned to the displacement reaction process for continued use.

[0129] Unevaporated barium chloride solution is separated by adding an equal amount of sulfuric acid to form a precipitate (BaSO4). The precipitate is then transported to a separation device for solid-liquid separation. The separated precipitate is treated as residue, and the reduced hydrochloric acid is purified and returned to the bio-extraction stage for continued use.

[0130] Example 4

[0131] A blend of natural organic minerals and trace elements:

[0132] The obtained 500-mesh natural organic mineral and trace element powder is compounded according to the following ratio: zinc gluconate 50%; lithium gluconate 30%; germanium gluconate 20%. After being metered by metering pump 1107, it is transported to the pneumatic conveying pipeline and then transported by pneumatic conveying to the homogenizing compounding machine 111. It is mixed and stirred for 1 hour, and then transported by pneumatic conveying to the storage silo to obtain a solid powder containing natural organic minerals and trace elements (germanium, lithium, and zinc).

[0133] Regarding the embodiments of the present invention, it should also be noted that, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0134] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for preparing a mineral powder, characterized in that, Includes the following steps: Microorganisms are added to an inorganic acid solution to obtain an extract; The extract is used to extract minerals from natural ores to obtain an inorganic salt solution of the minerals; An inorganic salt solution of the mineral is subjected to organic substitution treatment to obtain a mixture of organic acid salts containing the mineral; The mixture of organic acid salts containing the mineral is separated to obtain the mineral powder; Organic replacement treatment of the inorganic salt solution of the mineral includes: An organic acid and an organic solvent are added to an inorganic salt solution of the mineral and mixed to allow the organic acid to react with the inorganic salt solution, thereby obtaining a mixture containing organic acid salts of the mineral. Wherein, the organic acid salt is insoluble in the organic solvent, so that the organic acid salt forms an organic acid salt precipitate in the organic solvent; Separation processing of a mixture of organic acid salts containing the said mineral includes: The mixture containing the organic acid salt of the mineral is separated to obtain a precipitate of the organic acid salt of the mineral and a mixed solution of the organic solvent and the inorganic acid; Separate the organic solvent and inorganic acid from the mixed solution to obtain the organic solvent and / or inorganic acid solution; The microorganism is one of the following three: ferrous microspirochetes, thiobacillus sulfide, or sulfide bacillus. The organic acid salt is one of the following three: zinc gluconate, lithium gluconate, or germanium gluconate; The organic solvent is ethanol; The separation of organic solvents and inorganic acids in the mixed solution includes: An alkaline neutralizing agent is added to the mixed solution to neutralize the inorganic acid and generate an inorganic salt. The neutralized mixture is then subjected to evaporation treatment to evaporate the organic solvent and water in the mixture. The evaporated organic solvent and water are condensed to obtain a condensate of the organic solvent and water; The organic solvent and the condensate of water are separated to obtain the organic solvent.

2. The preparation method according to claim 1, characterized in that, The step of separating the mixture of organic acid salts containing the mineral further includes: The organic acid salt precipitate of the mineral is dried to obtain the mineral powder.

3. The preparation method according to claim 2, characterized in that, The separation of the mixture containing the organic acid salt of the mineral comprises: The mixture containing the organic acid salt of the mineral is subjected to solid-liquid separation to obtain an organic acid salt slurry of the mineral; The organic acid salt slurry was centrifuged to obtain the organic acid salt precipitate of the mineral.

4. The preparation method according to claim 3, characterized in that, The drying process for the organic acid salt precipitate of the mineral includes: The organic acid salt precipitate of the mineral is pulverized; The organic acid salts of the pulverized minerals are flash-dried.

5. The preparation method according to claim 4, characterized in that, During the flash evaporation process, the organic acid salts of the minerals are classified by particle size. Among them, organic acid salt particles of the minerals smaller than a predetermined particle size are collected; Organic acid salt particles of the minerals larger than the predetermined particle size are re-crushed and flash-evaporated until all organic acid salts of the minerals are dried.

6. The preparation method according to claim 1, characterized in that, Also includes: The organic solvent is added to the inorganic salt solution of the mineral to recycle the organic solvent; The microorganisms are added to the inorganic acid solution to obtain the extract, which is then recycled.

7. The preparation method according to claim 1, characterized in that, The separation of organic solvent and inorganic acid in the mixed solution further includes: An acidic displacing agent is added to the unevaporated inorganic salt solution in the mixed solution, and the acidic displacing agent forms a precipitate with the metal ions in the inorganic salt solution to obtain a mixture of the inorganic acid and the precipitate; The mixture of the inorganic acid and the precipitate is subjected to solid-liquid separation to obtain the inorganic acid solution.

8. The preparation method according to claim 1, characterized in that, The microorganisms extract a single mineral from the natural ore to obtain a single mineral powder.

9. The preparation method according to claim 8, characterized in that, The preparation method further includes: Minerals from the natural ore are extracted using a variety of different microorganisms to obtain mineral powders of various single elements; By compounding the various mineral powders, a multi-element mineral powder is obtained.

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