CN210515020U - An automatic control system for iron oxide pigment production - Google Patents
An automatic control system for iron oxide pigment production Download PDFInfo
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- CN210515020U CN210515020U CN201921348756.XU CN201921348756U CN210515020U CN 210515020 U CN210515020 U CN 210515020U CN 201921348756 U CN201921348756 U CN 201921348756U CN 210515020 U CN210515020 U CN 210515020U
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 239000001034 iron oxide pigment Substances 0.000 title claims abstract description 22
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 120
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 98
- 238000006243 chemical reaction Methods 0.000 claims abstract description 70
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 67
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 63
- 239000011593 sulfur Substances 0.000 claims abstract description 63
- 239000007788 liquid Substances 0.000 claims abstract description 55
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 49
- 239000013078 crystal Substances 0.000 claims abstract description 44
- 235000011121 sodium hydroxide Nutrition 0.000 claims abstract description 40
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000005352 clarification Methods 0.000 claims abstract description 11
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 17
- 239000003518 caustics Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 6
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 3
- 238000004148 unit process Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 239000005864 Sulphur Substances 0.000 claims 4
- 230000032258 transport Effects 0.000 claims 4
- 241001274216 Naso Species 0.000 claims 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 12
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 12
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 10
- 230000003647 oxidation Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 235000003891 ferrous sulphate Nutrition 0.000 description 4
- 239000011790 ferrous sulphate Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 3
- 229910021506 iron(II) hydroxide Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 229910002588 FeOOH Inorganic materials 0.000 description 1
- 239000007832 Na2SO4 Substances 0.000 description 1
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- CUPCBVUMRUSXIU-UHFFFAOYSA-N [Fe].OOO Chemical compound [Fe].OOO CUPCBVUMRUSXIU-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- -1 coatings Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910021519 iron(III) oxide-hydroxide Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000001052 yellow pigment Substances 0.000 description 1
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- Compounds Of Iron (AREA)
Abstract
The utility model discloses an automatic control system for producing iron oxide pigment, which comprises a sulfuric acid supply barrel, a liquid caustic soda supply barrel, a sulfurous sub reaction barrel, a sulfurous sub clarifying barrel, a seed crystal barrel, an oxidation reaction barrel and a PCL controller; the sulfuric acid supply barrel is used for quantitatively conveying a sulfuric acid solution into the sulfurous reaction barrel, iron sheets are stored in the sulfurous reaction barrel, and sulfurous is obtained through chemical reaction in the sulfurous reaction barrel; the sulfur sub-reaction barrel conveys sulfur sub into the sulfur sub-clarifying barrel through a pump, clarification is carried out in the sulfur sub-clarifying barrel, and the sulfur sub-clarifying barrel conveys clarified sulfur sub into the seed crystal barrel through a pipeline in a fixed amount; the liquid caustic soda supply barrel is used for conveying liquid caustic soda into the seed crystal barrel, the sulfurous sulfur in the seed crystal barrel is mixed with the liquid caustic soda to generate chemical reaction, and the seed crystal barrel conveys the mixture in the seed crystal barrel into the oxidation reaction barrel through a pump so as to generate iron oxide pigment through chemical reaction. The system has high automation degree, reduces the labor amount of workers, improves the working efficiency and can greatly save the production cost.
Description
Technical Field
The utility model relates to a pigment production technical field, more specifically say, it relates to an automated control system for iron oxide pigment production.
Background
Yellow iron oxide, also known as iron oxyhydroxide, having the molecular formula FeOOH or Fe2O3·H2O, is yellow powder, has needle-like particle shape, has higher tinting strength and covering power, is non-toxic and harmless, is an environment-friendly inorganic pigment, and has light resistance reaching 6-7 grades. The iron oxide yellow pigment is widely applied to industries such as building materials, coatings, paints, plastics, rubbers, electronics, industrial catalysts, tobacco, cosmetics and the like.
The preparation method of the iron oxide yellow comprises a ferrous sulfate oxidation method and an aromatic nitro oxidation method, wherein sulfuric acid and scrap iron react to generate ferrous sulfate by the ferrous sulfate oxidation method, sodium hydroxide is added, air is introduced for oxidation to prepare crystal nuclei, then the ferrous sulfate and the scrap iron are added into crystal nucleus suspension, air is blown in for oxidation by heating, and the iron oxide yellow is prepared by pressure filtration, rinsing, drying and crushing. The specific chemical reaction equation is as follows:
Fe+H2SO4→FeSO4+H2
FeSO4+2NaOH→Fe(OH)2+Na2SO4
4Fe(OH)2+O2→4FeO(OH)+2H2O
4FeSO4+O2+6H2O→4FeO(OH)+4H2SO4
SUMMERY OF THE UTILITY MODEL
The utility model provides an automatic control system for producing iron oxide pigment.
In order to achieve the above purpose, the utility model provides a following technical scheme: an automatic control system for producing iron oxide pigment comprises a sulfuric acid supply barrel, a liquid caustic soda supply barrel, a sulfur sub reaction barrel, a sulfur sub clarifying barrel, a seed crystal barrel, an oxidation reaction barrel, a PCL controller, an air pipeline for conveying air to the system and a steam pipeline for conveying steam to the system;
the sulfuric acid supply barrel is connected with the sulfurous reaction barrel through a pipeline, a sulfuric acid metering barrel is arranged on the pipeline between the sulfuric acid supply barrel and the sulfurous reaction barrel, a sulfuric acid pump is arranged on the pipeline between the sulfuric acid metering barrel and the sulfuric acid supply barrel, and a first electromagnetic valve is arranged on the pipeline between the sulfuric acid pump and the sulfuric acid metering barrel;
the liquid caustic soda supply barrel is connected with the seed crystal barrel through a pipeline, a liquid caustic soda metering barrel is arranged on the pipeline between the liquid caustic soda supply barrel and the seed crystal barrel, a liquid caustic soda pump is arranged on the pipeline between the liquid caustic soda metering barrel and the liquid caustic soda supply barrel, and a second electromagnetic valve is arranged on the pipeline between the liquid caustic soda pump and the liquid caustic soda metering barrel;
the PCL controller is embedded with a human-computer touch display screen, the human-computer touch display screen is provided with a signal acquisition unit, a receiving processing unit, a switching valve driving unit and a feeding pump driving unit, the signal acquisition unit detects and acquires the flow in the pipeline and transmits the acquired signal to the receiving processing unit, and the receiving processing unit processes the received signal and drives the feeding pump driving unit and the switching valve driving unit;
the sulfuric acid supply barrel is used for quantitatively conveying sulfuric acid solution into the sulfur sub reaction barrel, iron sheets are stored in the sulfur sub reaction barrel, water is injected into the sulfur sub reaction barrel through a water pump, and the chemical reaction generated in the sulfur sub reaction barrel is Fe + H2SO4＝FeSO4+H2The sulfurous reaction barrel is subjected to chemical reaction to obtain sulfurous;
the sulfur sub-reaction barrel conveys sulfur sub into the sulfur sub-clarifying barrel through a pump, clarification is carried out in the sulfur sub-clarifying barrel, and the sulfur sub-clarifying barrel conveys clarified sulfur sub into the seed crystal barrel through a pipeline in a fixed amount; a sulfur pump and a third electromagnetic valve are arranged on a pipeline between the sulfur clarifying barrel and the seed crystal barrel; the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are electrically connected with the PCL controller;
the liquid caustic soda supply barrel is used for quantitatively conveying liquid caustic soda into the seed crystal barrel, and the liquid caustic soda is a sodium hydroxide solution;
mixing sulfur and liquid alkali in the seed crystal barrel to perform chemical reaction, wherein the reaction equation is FeSO4+NaOH＝Fe(OH)2+NaSO4，4Fe(OH)2+O2＝4FeOOH+2H2O；
The mixture in the seed crystal bucket is carried to oxidation reaction bucket in through the pump with the seed crystal bucket to the seed crystal bucket, is equipped with air flowmeter on the air pipe who carries air in to oxidation reaction bucket, is equipped with the fourth solenoid valve on the steam pipe who carries steam to oxidation reaction bucket, still is equipped with the first temperature sensor who is used for monitoring temperature in the oxidation reaction bucket, first temperature sensor is connected with the temperature controller electricity that oxidation reaction bucket one side set up, and air flowmeter, temperature controller, fourth solenoid valve are connected with the PCL controller electricity, and the chemical reaction that takes place in the oxidation reaction bucket is 4FeSO4+O2+6H2O＝4FeOOH+4H2SO4，Fe+H2SO4＝FeSO4+H2And the oxidation reaction barrel generates iron oxide pigment through chemical reaction. Generate iron oxide pigment through chemical reaction in the oxidation reaction bucket, in the reaction process, first temperature sensor detects the temperature in the oxidation reaction bucket 6 and with signal transmission to temperature controller, temperature controller is with signal transmission to PCL controller and present on man-machine touch display screen, then, according to the temperature conditions in the oxidation reaction bucket, control opening or cutting off of fourth solenoid valve, carry steam or cut off the transport steam in to the oxidation reaction bucket, and then with temperature control in the oxidation reaction bucket in suitable scope. The air flow meter keeps a normally open state, and further certain air flux is kept in the oxidation reaction barrel. The system has high automation degree, reduces the labor amount of workers, improves the working efficiency, can greatly save the production cost and is safer.
Preferably, the sulfuric acid is concentrated sulfuric acid with a concentration of 98%.
Preferably, the concentration of the sodium hydroxide is 32%.
Preferably, a liquid level sensor is further arranged in the sulfur sub-clarifying barrel, and the liquid level sensor detects the liquid level in the sulfur sub-clarifying barrel and transmits the detection result to the receiving and processing unit.
Preferably, a first pH sensor is arranged in the sulfurous reaction barrel, and the first pH sensor detects the pH value in the sulfurous reaction barrel and transmits the detection result to the receiving and processing unit; and a second pH sensor is arranged in the sulfur sub-clarifying barrel and is used for detecting the pH value in the sulfur sub-clarifying barrel and transmitting the detection result to the receiving and processing unit. In the production process, the first pH sensor transmits data to the receiving and processing unit through detection, the receiving and processing unit drives the feeding pump driving unit and the switch valve driving unit to work, and corresponding sulfuric acid is added into the sulfur sub-reaction barrel to control the pH value to be 3.8-5; the second pH sensor transmits data to the receiving and processing unit through detection, the receiving and processing unit drives the feeding pump driving unit and the switch valve driving unit to work, and then corresponding sulfur is added into the sulfur sub-clarifying tank, so that the pH value is controlled to be 3.5-4.5.
Preferably, a second temperature sensor is arranged in the seed crystal barrel, and the second temperature sensor detects the temperature in the seed crystal barrel and transmits the detection result to the receiving and processing unit. In the production process, the temperature in the crystal seed barrel needs to be controlled to be about 30 ℃, and the second temperature sensor is used for monitoring the temperature in the crystal seed barrel and transmitting data to the PCL controller.
Preferably, a first temperature sensor for monitoring the temperature in the oxidation reaction barrel is further arranged in the oxidation reaction barrel, the first temperature sensor is electrically connected with a temperature controller arranged on one side of the oxidation reaction barrel, and the temperature controller is electrically connected with the PCL controller.
To sum up, the utility model discloses following beneficial effect has: the system realizes the automatic production of iron oxide yellow by controlling the corresponding parts to work through the PCL controller, has high automation degree, reduces the labor amount of workers, improves the working efficiency, can greatly save the production cost and is safer.
Drawings
FIG. 1 is a schematic diagram of the structure of an automated control system for iron oxide pigment production.
Reference numerals: 1. a sulfuric acid supply tank; 2. a liquid caustic supply barrel; 3. a sulfurous reaction barrel; 4. a sulfur sub-clarifier; 5. a seed crystal barrel; 6. an oxidation reaction barrel; 7. a sulfuric acid metering tank; 8. a sulfuric acid pump; 9. a first solenoid valve; 10. a liquid caustic soda metering barrel; 11. a liquid caustic pump; 12. a second solenoid valve; 13. a sulfur pump.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
In the system, A is an air pipeline which conveys air to the system and provides oxygen; b, a steam pipeline is used for conveying steam to the system and providing heat; and C, a water pipeline which is used for conveying water to the system.
The embodiment discloses an automatic control system for iron oxide pigment production, as shown in fig. 1, the automatic control system for iron oxide pigment production is characterized in that: comprises a sulfuric acid supply barrel 1, a liquid caustic soda supply barrel 2, a sulfur sub-reaction barrel 3, a sulfur sub-clarifying barrel 4, a seed crystal barrel 5, an oxidation reaction barrel 6 and a PCL controller;
the sulfuric acid supply barrel 1 is connected with the sulfurous reaction barrel 3 through a pipeline, a sulfuric acid metering barrel 7 is arranged on the pipeline between the sulfuric acid supply barrel 1 and the sulfurous reaction barrel 3, a sulfuric acid pump 8 is arranged on the pipeline between the sulfuric acid metering barrel 7 and the sulfuric acid supply barrel 1, and a first electromagnetic valve 9 is arranged on the pipeline between the sulfuric acid pump 8 and the sulfuric acid metering barrel 7;
the liquid caustic soda supply barrel 2 is connected with the seed crystal barrel 5 through a pipeline, a liquid caustic soda metering barrel 10 is arranged on the pipeline between the liquid caustic soda supply barrel 2 and the seed crystal barrel 5, a liquid caustic soda pump 11 is arranged on the pipeline between the liquid caustic soda metering barrel 10 and the liquid caustic soda supply barrel 2, and a second electromagnetic valve 12 is arranged on the pipeline between the liquid caustic soda pump 11 and the liquid caustic soda metering barrel 10;
a PCL controller is embedded with a human-computer touch display screen, the human-computer touch display screen is provided with a signal acquisition unit, a receiving processing unit, a switching valve driving unit and a feeding pump driving unit, the signal acquisition unit detects and acquires the flow in the pipeline and transmits the acquired signal to the receiving processing unit, and the receiving processing unit processes the received signal and drives the feeding pump driving unit and the switching valve driving unit;
a sulfuric acid supply barrel 1 for quantitatively conveying sulfuric acid solution into the sulfurous sub reaction barrel 3, wherein the sulfuric acid is concentrated sulfuric acid with the concentration of 98 percent, iron sheets are stored in the sulfurous sub reaction barrel 3, and the sulfuric acid solution is simultaneously subjected to sulfurous sub reaction by a water pumpWater is injected into the barrel 3, and the chemical reaction generated in the sulfurous reaction barrel 3 is Fe + H2SO4＝FeSO4+H2The sulfurous reaction barrel 3 obtains sulfurous through chemical reaction;
the sulfur reaction barrel 3 conveys sulfur to the sulfur clarifying barrel 4 through a sulfur pump 13, and clarifies the sulfur in the sulfur clarifying barrel 4, and the sulfur clarifying barrel 4 conveys the clarified sulfur to the seed crystal barrel 5 in a fixed amount through a pipeline; a sulfur sub-pump 13 and a third electromagnetic valve are arranged on a pipeline between the sulfur sub-clarifying barrel 4 and the seed crystal barrel 5; the first electromagnetic valve 9, the second electromagnetic valve 12 and the third electromagnetic valve are electrically connected with the PCL controller;
the liquid caustic soda supply barrel 2 is used for quantitatively conveying liquid caustic soda to the seed crystal barrel 5, wherein the liquid caustic soda is a sodium hydroxide solution, and the concentration of the sodium hydroxide is 32%;
the sulfurous acid in the crystal seed barrel 5 is mixed with liquid alkali to generate chemical reaction, and the reaction equation is FeSO4+NaOH＝Fe(OH)2+NaSO4，4Fe(OH)2+O2＝4FeOOH+2H2O；
The mixture in the seed crystal bucket 5 is carried to oxidation reaction bucket 6 in through the pump with seed crystal bucket 5 to seed crystal bucket 5, is equipped with air flowmeter on the air pipe who carries air in to oxidation reaction bucket 6, is equipped with the fourth solenoid valve on the steam conduit who carries steam to oxidation reaction bucket 6, still is equipped with the first temperature sensor who is used for monitoring temperature in oxidation reaction bucket 6 in the oxidation reaction bucket 6, first temperature sensor is connected with the temperature controller electricity that oxidation reaction bucket 6 one side set up, and the concrete structure of temperature controller refers to application publication No. CN 104353399A's patent document, and air flowmeter, temperature controller, fourth solenoid valve are connected with the PCL controller electricity, and the chemical reaction that takes place in the oxidation reaction bucket 6 is 4FeSO4+O2+6H2O＝4FeOOH+4H2SO4，Fe+H2SO4＝FeSO4+H2And the oxidation reaction barrel generates iron oxide pigment through chemical reaction. Generating iron oxide pigment in the oxidation reaction barrel 6 through chemical reaction, detecting the temperature in the oxidation reaction barrel 6 by a first temperature sensor and transmitting a signal to a temperature controller in the reaction process, transmitting the signal to a PCL controller by the temperature controller and displaying the signal on a human-computer touch display screenAnd then, according to the temperature condition in the oxidation reaction barrel 6, controlling the opening or the cutting of the fourth electromagnetic valve, and conveying steam into the oxidation reaction barrel 6 or cutting off the conveying of the steam, so as to control the temperature in the oxidation reaction barrel 6 within a proper range, wherein the steam pressure is 2-2.3Mpa, the steam temperature is 230-. The air flow meter is kept in a normally open state, so that a certain air flux is kept in the oxidation reaction barrel 6, and the air flux is 150m in 4 hours after the materials are fed3H, rising by 15m per hour within 5-30h3At 31-40h, the rise per hour is 20m3H, 41h till the discharge is controlled at 800m3And about/h. The system has high automation degree, reduces the labor amount of workers, improves the working efficiency, can greatly save the production cost and is safer.
Preferably, a liquid level sensor is also arranged in the sulfur sub-clarifying tank 4, and the liquid level sensor detects the liquid level in the sulfur sub-clarifying tank 4 and transmits the detection result to the receiving and processing unit.
In addition, a first pH sensor is arranged in the sulfur sub-reaction barrel 3, and the first pH sensor detects the pH value in the sulfur sub-reaction barrel 3 and transmits the detection result to the receiving and processing unit; and a second pH sensor is arranged in the sulfur sub-clarifying barrel 4 and is used for detecting the pH value in the sulfur sub-clarifying barrel 4 and transmitting the detection result to the receiving and processing unit. In the production process, the first pH sensor transmits data to the receiving and processing unit through detection, the receiving and processing unit drives the feeding pump driving unit and the switch valve driving unit to work, and corresponding sulfuric acid is added into the sulfur sub-reaction barrel 3 to control the pH value to be 3.8-5; the second pH sensor transmits data to the receiving and processing unit through detection, the receiving and processing unit drives the feeding pump driving unit and the switch valve driving unit to work, and then corresponding sulfur is added into the sulfur sub-clarifying tank 4, so that the pH value is controlled to be 3.5-4.5.
In the production process, the temperature in the seed crystal barrel 5 needs to be controlled to be about 30 ℃, and the second temperature sensor is used for monitoring the temperature in the seed crystal barrel 5 and transmitting data to the PCL controller. Therefore, a second temperature sensor is provided in the seed crystal barrel 5, which detects the temperature inside the seed crystal barrel 5 and transmits the detection result to the reception processing unit.
The directions given in the present embodiment are merely for convenience of describing positional relationships between the respective members and the relationship of fitting with each other. It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
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| CN201921348756.XU CN210515020U (en) | 2019-08-19 | 2019-08-19 | An automatic control system for iron oxide pigment production |
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| CN201921348756.XU CN210515020U (en) | 2019-08-19 | 2019-08-19 | An automatic control system for iron oxide pigment production |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118011945A (en) * | 2024-01-17 | 2024-05-10 | 山东春光磁电科技有限公司 | An automatic dissolution reaction and delivery system for preparing iron red |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118011945A (en) * | 2024-01-17 | 2024-05-10 | 山东春光磁电科技有限公司 | An automatic dissolution reaction and delivery system for preparing iron red |
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Address after: 313200 Shanshuidu, Zhongguan Town, Deqing County, Huzhou City, Zhejiang Province Patentee after: Zhejiang Huayuan Applied New Materials Co.,Ltd. Country or region after: China Address before: No. 837 Longshan Road, Zhongguan Town, Deqing County, Huzhou City, Zhejiang Province Patentee before: ZHEJIANG HUAYUAN PIGMENT Co.,Ltd. Country or region before: China |
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