CN109809380B - Process and device for synthesizing iron solution - Google Patents
Process and device for synthesizing iron solution Download PDFInfo
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- CN109809380B CN109809380B CN201910169203.6A CN201910169203A CN109809380B CN 109809380 B CN109809380 B CN 109809380B CN 201910169203 A CN201910169203 A CN 201910169203A CN 109809380 B CN109809380 B CN 109809380B
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Abstract
The invention discloses a process and a device for synthesizing an iron solution. The process of the iron solution synthesis process comprises the following steps: adding acid liquor into the iron source dissolving kettle by an acid liquor feeding device, and stirring simultaneously to form uniform acid liquor; then, feeding an iron source into the iron source dissolving kettle by an iron source feeding device, continuously stirring, fully contacting the iron source with a phosphoric acid solution for reaction, controlling the reaction temperature to be 50-90 ℃, and reacting for 1-3 hours to obtain an iron solution; and filtering the iron solution by an iron precipitation recovery device to obtain the iron solution without residue. Through the technical process, the method is suitable for preparing the iron solution by taking various types of iron sources and various types of acids as raw materials, is favorable for diversified selection of raw materials, has high automation of technical equipment, can realize automatic temperature control and automatic feeding control in the process, and reduces the labor cost.
Description
Technical Field
The application relates to a process and a device for synthesizing an iron solution.
Background
The iron phosphate is one of the main raw materials for preparing the lithium iron phosphate as the cathode material of the lithium battery. The lithium iron phosphate anode material is used as a key material of the lithium ion battery and has the advantages of high safety, low cost, long service life and the like. The iron solution is used as an intermediate product for preparing the iron phosphate, the currently common process and equipment have low automation degree, and the raw materials, namely the iron source, are single in source and are generally ferrous sulfate and iron powder.
Due to the above problems, there is a need for a process and equipment for preparing iron solution, which has high automation degree, fully controlled process parameters and wide raw material application range.
Disclosure of Invention
In view of the above technical problems in the prior art, the present application aims to provide a process and an apparatus for synthesizing an iron solution.
The device for synthesizing the iron solution is characterized by comprising an iron source dissolving kettle with a stirring device, an iron source feeding device, an acid liquor feeding device, an iron solution discharging pump, a condenser, a precipitate recycling device, a first temperature detector arranged on the iron source dissolving kettle and a heat exchange interlayer sleeved on the outer side of the iron source dissolving kettle, wherein two sides of the heat exchange interlayer are respectively connected with a hot fluid inlet and a hot fluid outlet through pipelines; the iron source feeding device and the acid liquor feeding device are respectively connected with an iron source dissolving kettle through pipelines, and a discharge port at the bottom of the iron source dissolving kettle is sequentially connected with an iron solution discharge pump, a condenser and a precipitate recovery device through pipelines.
The device for synthesizing the iron solution is characterized in that the top of the iron source dissolving kettle is also provided with a vent pipe and a first pressure measurer, and the iron source dissolving kettle is also provided with a liquid level measurer for monitoring the liquid level; the iron source feeding device comprises an iron source bin and an iron source feeder, and the iron source bin is connected with the iron source dissolving kettle through the iron source feeder.
The device for synthesizing the iron solution is characterized in that the acid liquor feeding device comprises a phosphoric acid feeder, a water feeder and other acid feeders which are respectively connected with pipelines of the iron source dissolving kettle, wherein flow control device systems are respectively arranged on the pipelines between the phosphoric acid feeder, the water feeder and other acid feeders and the iron source dissolving kettle, each flow control device system comprises a flow detector and a second electromagnetic valve, and the flow detectors are in signal connection with the second electromagnetic valves.
The device for synthesizing the iron solution is characterized in that a second temperature detector and a second pressure measurer are arranged on a pipeline between the condenser and the precipitate recovery device; a cold fluid inlet and a cold fluid outlet are respectively connected to two sides of the condenser through pipelines, and a third electromagnetic valve is arranged on the pipeline between the cold fluid inlet and the condenser; and the second temperature detector is in signal connection with the third electromagnetic valve so as to detect the temperature of the iron solution flowing out of the condenser through the second temperature detector, and feed back and control the opening of the third electromagnetic valve.
The device for synthesizing the iron solution is characterized in that the precipitate recovery device comprises first filtering equipment and a demagnetizer connected with the first filtering equipment through a pipeline, the first filtering equipment is a plate-frame filter, a bag filter, a centrifugal filter or a candle filter, and a liquid inlet of the first filtering equipment is connected with a liquid outlet pipeline of a condenser.
The device for synthesizing the iron solution is characterized in that the precipitate recovery device further comprises an iron solution intermediate tank, an iron solution filter pump and second filter equipment, the second filter equipment is a plate-frame filter, a bag filter, a centrifugal filter or a candle filter, a liquid inlet at the top of the iron solution intermediate tank is connected with a liquid outlet pipeline of a demagnetizer, and a liquid outlet at the bottom of the iron solution intermediate tank is connected with the second filter equipment pipeline through the iron solution filter pump.
A process for synthesizing iron solution is characterized by comprising the following steps:
1) respectively adding phosphoric acid, water and other acids into the iron source dissolving kettle by a phosphoric acid feeder, a water feeder and other acid feeders, and simultaneously starting a stirring device of the iron source dissolving kettle to stir to form uniform acid liquor by mixing;
2) introducing hot fluid into a heat exchange interlayer on the outer side of an iron source dissolving kettle from a hot fluid inlet, monitoring the temperature of a solution in the iron source dissolving kettle to be stabilized at 50-90 ℃ through a first temperature detector and a first electromagnetic valve, then adding an iron source into the iron source dissolving kettle through an iron source feeding device, continuously stirring simultaneously, fully contacting the iron source and an acid solution for reaction, maintaining the reaction temperature to be stabilized at 50-90 ℃, and obtaining an iron solution after the reaction time is 1-3 hours;
3) starting an iron solution discharging pump to convey the iron solution obtained in the step 2) into a condenser, introducing a cold fluid into the condenser through a cold fluid inlet, monitoring the temperature of the iron solution flowing out of the condenser to be stabilized at 40-60 ℃ through a second temperature detector and a third electromagnetic valve, and allowing the iron solution flowing out of the condenser to enter an iron solution intermediate tank after the iron solution sequentially passes through a first filtering device and a demagnetizer;
4) and starting an iron solution filtering pump to convey the iron solution in the iron solution intermediate tank into second filtering equipment for filtering, and then discharging the residue-free iron solution from the second filtering equipment.
The process for synthesizing the iron solution is characterized in that in the step 1), other acids are aqueous solutions of one or more of sulfuric acid, hydrochloric acid, formic acid, acetic acid, citric acid and tartaric acid; in the acid liquor formed by mixing in the step 1), the concentration of phosphoric acid is 0-2mol/L, and the concentration of H < + > provided by other acids is 0-3 mol/L.
The process for synthesizing the iron solution is characterized in that in the step 2), the iron source is one or more of iron powder, scrap iron, waste iron, ferrous sulfate, ferric sulfate, ferrous oxide, ferric oxide, ferrous chloride and ferric chloride; hot fluid introduced into the heat exchange interlayer on the outer side of the iron source dissolving kettle is water vapor or heat conducting oil; in the iron solution obtained in the step 2), the concentration of iron ions is 1-2 mol/L.
Compared with the prior art, the beneficial effects of this application are:
the process is suitable for preparing the iron solution by taking various types of iron sources and acids as raw materials, is beneficial to the diversified selection of the raw materials, has high automation of process equipment, reduces the labor cost, and automatically controls the temperature and the feeding, for example, controls the reaction temperature in the iron source dissolving kettle to be stabilized at 50-90 ℃, controls the temperature of the condenser to cool the iron solution to be stabilized at 40-60 ℃, controls the flow ratio of other acids, water and phosphoric acid entering the iron source dissolving kettle, and the like.
Drawings
FIG. 1 is a schematic structural view of an apparatus for iron solution synthesis according to the present application;
in the figure: 1-iron source dissolving kettle, 2-condenser, 3-first filtering equipment, 4-demagnetizer, 5-iron solution intermediate tank, 6-second filtering equipment, 7-iron solution discharging pump, 8-iron solution filtering pump, 9-blow-down pipe, 10-iron source feeder, 11-iron source storage bin, 12-hot fluid inlet, 13-hot fluid outlet, 14-cold fluid inlet, 15-cold fluid outlet, 16-first temperature detector, 17-liquid level measurer, 18-first pressure measurer, 19-second temperature detector, 20-second pressure measurer, 21-heat exchange interlayer, 22-flow detector, 23-first electromagnetic valve, 24-second electromagnetic valve and 25-third electromagnetic valve.
Detailed Description
The present invention is further illustrated by the following examples, which should not be construed as limiting the scope of the invention.
Example (b): compare FIG. 1
The utility model provides a synthetic device of iron solution, includes iron source dissolving kettle 1, iron source feed arrangement, acidizing fluid feed arrangement, iron solution discharge pump 7, condenser 2, precipitate recovery unit that have agitating unit, sets up first thermodetector 16 on iron source dissolving kettle 1 and cup joints the heat transfer intermediate layer 21 in the iron source dissolving kettle 1 outside. The top of the iron source dissolving kettle 1 is provided with an emptying pipe 9 and a first pressure measurer 18 (alarming when the pressure exceeds the standard) for monitoring the internal pressure of the iron source dissolving kettle 1, and the iron source dissolving kettle 1 is provided with a liquid level measurer 17 for monitoring the liquid level; the two sides of the heat exchange interlayer 21 are respectively connected with a hot fluid inlet 12 and a hot fluid outlet 13 through pipelines, a first electromagnetic valve 23 is arranged on the pipeline between the hot fluid inlet 12 and the heat exchange interlayer 21, the first electromagnetic valve 23 is in signal connection with a first temperature detector 16, so that the temperature of the solution in the iron source dissolving kettle 1 is detected through the first temperature detector 16, and the opening degree of the first electromagnetic valve 23 is fed back and controlled; the iron source feeding device and the acid liquor feeding device are respectively connected with the iron source dissolving kettle 1 through pipelines, and a discharge port at the bottom of the iron source dissolving kettle 1 is sequentially connected with the iron solution discharge pump 7, the condenser 2 and the precipitate recovery device through pipelines. A second temperature detector 19 and a second pressure measurer 20 are arranged on a pipeline between the condenser 2 and the sediment recovery device; a cold fluid inlet 14 and a cold fluid outlet 15 are respectively connected to two sides of the condenser 2 through pipelines, and a third electromagnetic valve 25 is arranged on the pipeline between the cold fluid inlet 14 and the condenser 2; the second temperature detector 19 is in signal connection with the third electromagnetic valve 25, so that the temperature of the iron solution flowing out of the condenser 2 is detected by the second temperature detector 19, and the opening of the third electromagnetic valve 25 is fed back and controlled.
Iron source feed arrangement includes iron source feed bin 11 and iron source feeder 10, and iron source feed bin 11 passes through iron source feeder 10 and 1 tube coupling of iron source dissolution cauldron, from this through iron source feeder 10 with the iron source in the iron source feed bin 11 drop into in the iron source dissolution cauldron 1 (when the iron source is the solid, spiral feeder can be chooseed for use to iron source feeder 10).
The acid liquor feeding device comprises a phosphoric acid feeder, a water feeder and other acid feeders which are respectively connected with the iron source dissolving kettle 1 through pipelines, flow control device systems are respectively arranged on the pipelines between the phosphoric acid feeder, the water feeder and other acid feeders and the iron source dissolving kettle 1, each flow control device system comprises a flow detector 22 and a second electromagnetic valve 24, the flow detectors 22 are in signal connection with the second electromagnetic valves 24, the flow detectors 22 monitor the flow of substances and feed the flow back to the second electromagnetic valves 24, and the opening of the second electromagnetic valves 24 is controlled, so that the flow of the raw materials fed into the iron source dissolving kettle 1 can be respectively controlled.
The precipitate recovery device comprises a first filtering device 3, a demagnetizer 4, a solution intermediate tank 5, an iron solution filtering pump 8 and a second filtering device 6 which are sequentially connected through pipelines, wherein a liquid inlet of the first filtering device 3 is connected with a liquid outlet pipeline of the condenser 2, and the first filtering device 3 and the second filtering device 6 can be respectively and independently selected from a plate and frame type filter, a bag type filter, a centrifugal filter or a candle type filter.
In the following examples,% means a unit of mass percent.
Example 1:
the iron solution is synthesized by adopting the device, and the process is as follows:
preparing acid liquor: 1411kg of 85% phosphoric acid aqueous solution, 1200kg of 98% sulfuric acid and 7707kg of pure water are added into an iron source dissolving kettle 1, a motor is started to stir for 20 minutes, the materials are uniformly mixed to prepare acid liquor, the concentration of phosphoric acid in the acid liquor is 1.22mol/L, and H provided by the sulfuric acid+The concentration is 2.4 mol/L.
Dissolving an iron source: 682kg of 98.5% iron powder is metered and added into an iron source bin 11, the iron powder is put into an iron source dissolving kettle 1 through an iron source feeder 10, the iron powder is slowly added, the iron powder feeding time is 60 minutes, meanwhile, the stirring is continued, the iron powder and the acid liquor are fully contacted and reacted, after the iron powder is added, jacket steam heating is started (namely hot fluid is introduced into a heat exchange interlayer 21), the temperature of the solution in the iron source dissolving kettle 1 is raised to 85 ℃, and the reaction is carried out for 3 hours. An iron solution was obtained so that the iron ion concentration was 1.2 mol/L.
Filtering and demagnetizing: pumping the dissolved iron solution into a cooler 2 by an iron solution discharge pump 7, cooling to 50 ℃, feeding the cooled iron solution into a first filtering device 3 (selecting a plate-frame filter) to remove most of residues, and feeding the filtered iron solution into a demagnetizer 4 (adopting electric demagnetization) to remove magnetic substances. The demagnetized iron solution enters an iron solution intermediate tank 5, and is conveyed into a second filtering device 6 (a candle filter is selected) through an iron solution filtering pump 8, so that residual residues are further removed. Ensuring that no magnetic substance and no residue are left in the iron solution, and the recovery rate of iron reaches more than 99 percent.
Example 2:
the iron solution is synthesized by adopting the device, and the process is as follows:
preparing acid liquor: 1176kg of 85% phosphoric acid aqueous solution and 6016kg of pure water are added into the iron source dissolving kettle 1, a motor is started to stir for 10 minutes, and the mixture is uniformly mixed to prepare acid liquor, wherein the concentration of phosphoric acid in the acid liquor is 1.02 mol/L.
Dissolving an iron source: 2808kg of 99% ferrous sulfate is measured and added into an iron source bin 11, the iron source bin is put into an iron source dissolving kettle 1 through an iron source feeder 10, iron powder is slowly added, the iron powder is added for 30 minutes, meanwhile, stirring is carried out continuously, the ferrous sulfate and acid liquor are enabled to be in full contact reaction, after the ferrous sulfate is added, jacket steam heating is started (namely hot fluid is introduced into a heat exchange interlayer 21), the temperature of the solution in the iron source dissolving kettle 1 is raised to 50 ℃, and then the reaction is carried out for 1 hour. An iron solution was obtained so that the iron ion concentration was 1 mol/L.
Filtering and demagnetizing: pumping the dissolved iron solution into a cooler 2 by an iron solution discharge pump 7, cooling to 40 ℃, feeding the cooled iron solution into a first filtering device 3 (selecting a centrifugal filter) to remove most of residues, and feeding the filtered iron solution into a demagnetizer 4 (adopting a magnet to demagnetize) to remove magnetic substances. The demagnetized iron solution enters an iron solution intermediate tank 5, and is conveyed into a second filtering device 6 (a plate-and-frame filter is selected) through an iron solution filter pump 8, so that residual residues are further removed. Ensuring that no magnetic substance and no residue are left in the iron solution, and the recovery rate of iron reaches more than 99 percent.
Example 3:
the iron solution is synthesized by adopting the device, and the process is as follows:
preparing acid liquor: 50kg of 98% sulfuric acid and 8142kg of pure water are added into the iron source dissolving kettle 1, a motor is started to stir for 10 minutes, and the mixture is uniformly mixed to prepare acid liquor, wherein the concentration of the sulfuric acid in the acid liquor is 0.05 mol/L.
Dissolving an iron source: 2808kg of 99% ferrous sulfate is measured and added into an iron source bin 11, the iron source bin is put into an iron source dissolving kettle 1 through an iron source feeder 10, iron powder is slowly added, the iron powder is added for 30 minutes, meanwhile, stirring is carried out continuously, the ferrous sulfate and acid liquor are enabled to be in full contact reaction, after the ferrous sulfate is added, jacket steam heating is started (namely hot fluid is introduced into a heat exchange interlayer 21), the temperature of the solution in the iron source dissolving kettle 1 is raised to 50 ℃, and then the reaction is carried out for 1 hour. An iron solution was obtained so that the iron ion concentration was 1 mol/L.
Filtering and demagnetizing: pumping the dissolved iron solution into a cooler 2 by an iron solution discharge pump 7, cooling to 40 ℃, feeding the cooled iron solution into a first filtering device 3 (selecting a centrifugal filter) to remove most of residues, and feeding the filtered iron solution into a demagnetizer 4 (adopting a magnet to demagnetize) to remove magnetic substances. The demagnetized iron solution enters an iron solution intermediate tank 5, and is conveyed into a second filtering device 6 (a plate-and-frame filter is selected) through an iron solution filter pump 8, so that residual residues are further removed. Ensuring that no magnetic substance and no residue are left in the iron solution, and the recovery rate of iron reaches more than 99 percent.
Example 4:
the iron solution is synthesized by adopting the device, and the process is as follows:
preparing acid liquor: 1176kg of 85% phosphoric acid aqueous solution, 1973kg of 37% hydrochloric acid and 9634kg of pure water are added into an iron source dissolving kettle 1, a motor is started to stir the mixture for 30 minutes, the mixture is uniformly mixed to prepare acid liquor, the concentration of phosphoric acid in the acid liquor is 1.02mol/L, and H provided by hydrochloric acid+The concentration is 2 mol/L.
Dissolving an iron source: 569kg of 98.5% iron powder is metered and added into an iron source bin 11, the iron powder is put into an iron source dissolving kettle 1 through an iron source feeder 10, the iron powder is slowly added, the iron powder is added for 90 minutes, meanwhile, the stirring is continued, the iron powder and the acid liquor are fully contacted and reacted, after the iron powder is added, jacket steam heating is started (namely hot fluid is introduced into a heat exchange interlayer 21), the temperature of the solution in the iron source dissolving kettle 1 is raised to 80 ℃, and the reaction is carried out for 2 hours. An iron solution was obtained so that the iron ion concentration was 1.0 mol/L.
Filtering and demagnetizing: pumping the dissolved iron solution into a cooler 2 by an iron solution discharge pump 7, cooling to 50 ℃, feeding the cooled iron solution into a first filtering device 3 (selecting a centrifugal filter) to remove most of residues, and feeding the filtered iron solution into a demagnetizer 4 (adopting a magnet to demagnetize) to remove magnetic substances. The demagnetized iron solution enters an iron solution intermediate tank 5, and is conveyed into a second filtering device 6 (a plate-and-frame filter is selected) through an iron solution filter pump 8, so that residual residues are further removed. Ensuring that no magnetic substance and no residue are left in the iron solution, and the recovery rate of iron reaches more than 99 percent.
The statements in this specification merely set forth a list of implementations of the inventive concept and the scope of the present invention should not be construed as limited to the particular forms set forth in the examples.
Claims (7)
1. A device for synthesizing iron solution is characterized by comprising an iron source dissolving kettle (1) with a stirring device, an iron source feeding device, an acid liquor feeding device, an iron solution discharging pump (7), a condenser (2), a precipitate recovery device, a first temperature detector (16) arranged on the iron source dissolving kettle (1) and a heat exchange interlayer (21) sleeved outside the iron source dissolving kettle (1), the two sides of the heat exchange interlayer (21) are respectively connected with a hot fluid inlet (12) and a hot fluid outlet (13) through pipelines, a first electromagnetic valve (23) is arranged on the pipeline between the hot fluid inlet (12) and the heat exchange interlayer (21), the first electromagnetic valve (23) is in signal connection with a first temperature detector (16), the temperature of the solution in the iron source dissolving kettle (1) is detected through a first temperature detector (16), and the opening of a first electromagnetic valve (23) is fed back and controlled; the iron source feeding device and the acid liquid feeding device are respectively connected with the iron source dissolving kettle (1) through pipelines, and a discharge port at the bottom of the iron source dissolving kettle (1) is sequentially connected with an iron solution discharge pump (7), a condenser (2) and a precipitate recovery device through pipelines;
the acid liquor feeding device comprises a phosphoric acid feeder, a water feeder and other acid feeders which are respectively connected with the iron source dissolving kettle (1) through pipelines, flow control device systems are respectively arranged on the pipelines between the phosphoric acid feeder, the water feeder and other acid feeders and the iron source dissolving kettle (1), each flow control device system comprises a flow detector (22) and a second electromagnetic valve (24), and the flow detectors (22) are in signal connection with the second electromagnetic valves (24);
a second temperature detector (19) and a second pressure measurer (20) are arranged on a pipeline between the condenser (2) and the sediment recovery device; a cold fluid inlet (14) and a cold fluid outlet (15) are respectively connected to two sides of the condenser (2) through pipelines, and a third electromagnetic valve (25) is arranged on a pipeline between the cold fluid inlet (14) and the condenser (2); the second temperature detector (19) is in signal connection with the third electromagnetic valve (25) so as to detect the temperature of the iron solution flowing out of the condenser (2) through the second temperature detector (19), and the opening degree of the third electromagnetic valve (25) is fed back and controlled.
2. The device for synthesizing the iron solution according to the claim 1, characterized in that the top of the iron source dissolving kettle (1) is also provided with a vent pipe (9) and a first pressure measurer (18), and the iron source dissolving kettle (1) is also provided with a liquid level measurer (17) for monitoring the liquid level; the iron source feeding device comprises an iron source bin (11) and an iron source feeder (10), wherein the iron source bin (11) is connected with the iron source dissolving kettle (1) through the iron source feeder (10) through a pipeline.
3. An apparatus for iron solution synthesis according to claim 1, characterized in that the precipitate recovery device comprises a first filtering device (3) and a demagnetizer (4) connected with the first filtering device (3) through a pipeline, the first filtering device (3) is a plate and frame filter, a bag filter, a centrifugal filter or a candle filter, and a liquid inlet of the first filtering device (3) is connected with a liquid outlet of the condenser (2) through a pipeline.
4. The device for synthesizing the iron solution according to the claim 3, characterized in that the precipitate recovery device further comprises an iron solution intermediate tank (5), an iron solution filter pump (8) and a second filter device (6), the second filter device (6) is a plate and frame filter, a bag filter, a centrifugal filter or a candle filter, a liquid inlet at the top of the iron solution intermediate tank (5) is connected with a liquid outlet of the demagnetizer (4) by a pipeline, and a liquid outlet at the bottom of the iron solution intermediate tank (5) is connected with the second filter device (6) by a pipeline through the iron solution filter pump (8).
5. A process for synthesizing iron solution is characterized by comprising the following steps:
1) respectively adding phosphoric acid, water and other acids into the iron source dissolving kettle (1) by a phosphoric acid feeder, a water feeder and other acid feeders, and simultaneously starting a stirring device of the iron source dissolving kettle (1) to stir to form uniform acid liquor;
2) introducing hot fluid into a heat exchange interlayer (21) on the outer side of an iron source dissolving kettle (1) from a hot fluid inlet (12), monitoring the temperature of a solution in the iron source dissolving kettle (1) to be stabilized at 50-90 ℃ through a first temperature detector (16) and a first electromagnetic valve (23), then adding an iron source into the iron source dissolving kettle (1) through an iron source feeding device, continuously stirring, fully contacting the iron source with acid liquor for reaction, maintaining the reaction temperature to be stabilized at 50-90 ℃, and obtaining an iron solution after the reaction time is 1-3 hours;
3) starting an iron solution discharging pump (7) to convey the iron solution obtained in the step 2) into a condenser (2), introducing a cold fluid into the condenser (2) through a cold fluid inlet (14), monitoring the temperature of the iron solution flowing out of the condenser (2) to be stabilized at 40-60 ℃ through a second temperature detector (19) and a third electromagnetic valve (25), and allowing the iron solution flowing out of the condenser (2) to enter an iron solution intermediate tank (5) after passing through a first filtering device (3) and a demagnetizer (4) in sequence;
4) and starting an iron solution filtering pump (8) to convey the iron solution in the iron solution intermediate tank (5) into a second filtering device (6) for filtering, and then discharging the residue-free iron solution from the second filtering device (6).
6. The process of claim 5, wherein in step 1), the other acid is an aqueous solution of one or more of sulfuric acid, hydrochloric acid, formic acid, acetic acid, citric acid, and tartaric acid; in the acid liquor formed by mixing in the step 1), the concentration of phosphoric acid is 0-2mol/L, and H provided by other acids+The concentration is 0-3 mol/L.
7. The process of claim 5, wherein in step 2), the iron source is one or more selected from iron powder, scrap iron, waste iron, ferrous sulfate, ferric sulfate, ferrous oxide, ferric oxide, ferrous chloride, and ferric chloride; hot fluid which is introduced into the heat exchange interlayer (21) at the outer side of the iron source dissolving kettle (1) is water vapor or heat conducting oil; in the iron solution obtained in the step 2), the concentration of iron ions is 1-2 mol/L.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090312170A1 (en) * | 2008-06-12 | 2009-12-17 | Wagh Arun S | Inorganic Phosphate Resins and Method for Their Manufacture |
| US20120264016A1 (en) * | 2011-04-18 | 2012-10-18 | Toshitsugu Sueki | Method for producing positive electrode active substance, and use of said active substance |
| CN104817059A (en) * | 2015-04-29 | 2015-08-05 | 江西东华科技园有限责任公司 | Method for preparing battery-grade iron phosphate from reaction between iron powder and phosphoric acid |
| CN106379877A (en) * | 2015-12-27 | 2017-02-08 | 天津赫维科技有限公司 | Continuous preparation device of iron phosphate |
| CN108640162A (en) * | 2018-07-10 | 2018-10-12 | 河南省睿博环境工程技术有限公司 | A kind of alkali cycle iron content solid waste production iron oxide pigment device systems |
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2019
- 2019-03-06 CN CN201910169203.6A patent/CN109809380B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090312170A1 (en) * | 2008-06-12 | 2009-12-17 | Wagh Arun S | Inorganic Phosphate Resins and Method for Their Manufacture |
| US20120264016A1 (en) * | 2011-04-18 | 2012-10-18 | Toshitsugu Sueki | Method for producing positive electrode active substance, and use of said active substance |
| CN104817059A (en) * | 2015-04-29 | 2015-08-05 | 江西东华科技园有限责任公司 | Method for preparing battery-grade iron phosphate from reaction between iron powder and phosphoric acid |
| CN106379877A (en) * | 2015-12-27 | 2017-02-08 | 天津赫维科技有限公司 | Continuous preparation device of iron phosphate |
| CN108640162A (en) * | 2018-07-10 | 2018-10-12 | 河南省睿博环境工程技术有限公司 | A kind of alkali cycle iron content solid waste production iron oxide pigment device systems |
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