CN1709985A - Method for producing iron oxide black - Google Patents
Method for producing iron oxide black Download PDFInfo
- Publication number
- CN1709985A CN1709985A CN 200510075112 CN200510075112A CN1709985A CN 1709985 A CN1709985 A CN 1709985A CN 200510075112 CN200510075112 CN 200510075112 CN 200510075112 A CN200510075112 A CN 200510075112A CN 1709985 A CN1709985 A CN 1709985A
- Authority
- CN
- China
- Prior art keywords
- iron oxide
- black
- ferrous
- oxide black
- salt water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 36
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 31
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 11
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 11
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 11
- 239000002699 waste material Substances 0.000 claims abstract description 10
- 239000000049 pigment Substances 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 5
- 239000007800 oxidant agent Substances 0.000 claims abstract description 3
- 230000001590 oxidative effect Effects 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 11
- 229910021506 iron(II) hydroxide Inorganic materials 0.000 claims description 10
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 claims description 10
- 238000007254 oxidation reaction Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 230000003472 neutralizing effect Effects 0.000 claims description 8
- 239000004408 titanium dioxide Substances 0.000 claims description 8
- WTFXARWRTYJXII-UHFFFAOYSA-N iron(2+);iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[Fe+2].[Fe+3].[Fe+3] WTFXARWRTYJXII-UHFFFAOYSA-N 0.000 claims description 6
- 239000000047 product Substances 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 238000007873 sieving Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- UCNNJGDEJXIUCC-UHFFFAOYSA-L hydroxy(oxo)iron;iron Chemical compound [Fe].O[Fe]=O.O[Fe]=O UCNNJGDEJXIUCC-UHFFFAOYSA-L 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 239000002244 precipitate Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000004062 sedimentation Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 229910000349 titanium oxysulfate Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000012847 fine chemical Substances 0.000 abstract description 2
- 229920006395 saturated elastomer Polymers 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 abstract 2
- 239000010866 blackwater Substances 0.000 abstract 1
- 230000019612 pigmentation Effects 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 description 12
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 5
- 239000012071 phase Substances 0.000 description 5
- 239000003513 alkali Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 238000004040 coloring Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 241000872198 Serjania polyphylla Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000001034 iron oxide 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
- 239000007791 liquid phase Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
Landscapes
- Compounds Of Iron (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
This is the producing method of a kind of oxidized iron oxide black including following contents: prepare ferrite watery solution; use sodium hydroxide as neutralizaing agent and react with ferrite watery solution to produce hydroxide ferrous; use oxygenous gas as oxidant, and react with said hydroxide ferrous to produce iron oxide black; make the prepared iron oxide black water washed, sieved, dried and comminuted orderly to get blue oxidized iron oxide black pigment product. The oxidized iron oxide black produced by this method has high purity and thin crystal grain, the grain size of produced pigment is thin and even, and has saturated blue ink light black and stable effect to light and atmosphere. It also has strong pigmentation strength and hiding power, and can be used in such fine chemical industry products as printing ink and carbon powder. The farther project is using waste residue containing ferrous sulfate and vented in titanium oxide powder production, to produce ferrous sulfate watery solution and produce oxidized iron oxide black, which can adequately use industry waste material to produce oxidized iron oxide black products of high quality, and reduce environmental pollution.
Description
Technical Field
The invention belongs to a production method of a pigment, and particularly relates to a production method of iron oxide black.
Background
Iron oxide black, abbreviated as iron black, has a molecular formula of Fe3O4Or Fe2O3FeO, known under the chemical name ferriferrous oxide, is of the spinel type and can also be called ferrous ferrite and used in combinationThe structural formula is shown.
Iron oxide black is widely used in the fields of paint, building material, cement industry coloring and the like due to strong covering power, tinting strength and good light resistance, and is also widely used in the fields of printing ink, printing, plastic coloring, polishing, metal flaw detection and the like. The prior art generally uses a direct addition method, namely, leftover bits and pieces for producing iron oxide red or iron oxide yellow are used as raw materials, and iron oxide black is generated by addition and dehydration under certain process conditions. In addition, in the existing titanium dioxide production, 3-4 tons of waste residues containing ferrous sulfate can be generated when one ton of titanium dioxide is produced, and serious environmental pollution is caused.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method for producing iron oxide black with high purity, fine and uniform particle size, high tinting strength and blue phase characteristic.
The technical problem to be further solved by the invention is
The technical scheme for solving the problems is as follows:
1. preparing a ferrous salt aqueous solution;
2. using caustic soda as a neutralizing agent to react with a ferrous salt aqueous solution to generate ferrous hydroxide;
3. using oxygen-containing gas as oxidant, making it and the above-mentioned ferrous hydroxide undergo the oxidation reaction to produce iron black;
4. and sieving, filter pressing, rinsing, drying and crushing the generated iron oxide black to obtain a blue-phase iron oxide black pigment product.
The ferrous salt aqueous solution can be ferrous sulfate aqueous solution prepared by refining and removing impurities from ferrous sulfate-containing waste slag discharged from titanium dioxide production, or pure ferrous aqueous solution obtained by treating pickling waste liquid in the steel industry;
the concentration of the ferrous salt aqueous solution is preferably 5-50%, and the preferable scheme is that the content of the ferrous salt is 40-50%;
the neutralizing agent caustic soda comprises liquid alkali, solid alkali, flake alkali and the like, and the pH value of the neutralized gel is 7.5-9;
the oxygen-containing gas may be air or other oxygen-containing gas.
The oxidation reaction condition of item 3 is that the oxidation reaction is carried out at a temperature of 90-102 ℃ and a pH value of 7.5-9.
The further scheme of the invention is a method for producing iron oxide black by using waste residues produced in titanium dioxide production as raw materials:
the method is characterized in that: the preparation method of the ferrous salt water solution comprises the following steps:
waste slag particles containing ferrous sulfate discharged from titanium dioxide production are put into water to be heated and fully dissolved, wherein, the impurity titanyl sulfate is hydrolyzed into metatitanic acid precipitate, and after sedimentation separation, clear liquid is taken as ferrous salt water solution for producing iron oxide black.
The method of the invention is a liquid phase production method, the produced iron oxide black has high purity and fine crystal grains, and the prepared pigment has fine and uniform grain diameter, has the blue phase characteristic of saturated blue ink light black, has stable light and atmosphere action, strong tinting strength and strong covering power, and can be used for fine chemical products such as printing ink, carbon powder and the like.
The further scheme of the invention is a method for producing the iron oxide black by using the waste residues generated in the production of the titanium dioxide as the raw materials, can fully utilize industrial waste materials to produce high-quality iron oxide black products, and reduces the environmental pollution.
Detailed Description
Example 1
The method for producing the blue-phase black iron oxide pigment comprises the following steps:
1. putting waste residue containing ferrous sulfate discharged in titanium dioxide production into a dissolving tank, heating by steam, fully dissolving, standing for settling, taking supernatant liquid on the upper part of the dissolving tank to prepare 2000Kg of ferrous sulfate aqueous solution with the concentration of 45%, and putting the ferrous sulfate aqueous solution into a reaction container;
2. adding about 865Kg of liquid caustic soda with 30% of neutralizing agent into ferrous sulfate aqueous solution while stirring to generate ferrous hydroxide, wherein the pH value of the system is 8.5;
3. pumping the prepared ferrous hydroxide into a 5000L reaction tank, controlling the temperature at 95 deg.C and pH at about 8.5 with steam, and introducing water at a flow rate of 0.3m while stirring3Performing oxidation reaction in air for/min to generate iron oxide black;
the reaction formulas of the steps 2 and 3 are as follows:
4. sieving a wet material: sieving the slurry obtained in the step 3, wherein the mesh number of the sieve is 320 meshes;
5. filter pressing and water washing: putting the sieved substance into a washing tank for washing and then filtering;
6. drying the filtrate obtained in the step 5;
7. and crushing the dried substance to obtain the blue-phase iron oxide black pigment.
The product of this example was tested to contain Fe3O496.5 percent; the tinting strength was 160% compared to industry-specified standards.
The following are the main technical data of the production process of examples 2 to 4:
example 2 example 3 example 4
30 percent of ferrous salt aqueous solution (concentration), 40 percent of ferrous salt aqueous solution and 50 percent of ferrous salt aqueous solution
Neutralizer solid caustic soda 42% liquid caustic soda 30% liquid caustic soda
pH 7.589 after neutralization
Oxidation reaction temperature 9095100
Oxidation pH 7.589
The products produced in examples 2 to 4 all had substantially the same effects as in example 1.
Claims (9)
1. The production method of the iron oxide black is characterized by comprising the following steps:
(1) to prepare ferrous salt water solution;
(2) reacting with ferrous salt water solution by using caustic soda as a neutralizing agent to generate ferrous hydroxide;
(3) using oxygen-containing gas as oxidant to make oxidation reaction with the above-mentioned ferrous hydroxide to produce iron black;
(4) and sieving, filter-pressing, rinsing, drying and crushing the generated iron oxide black to obtain the blue-phase iron oxide black pigment product.
2. The method for producing black iron oxide according to claim 1, characterized in that: the preparation method of the ferrous salt water solution comprises the following steps: waste slag particles containing ferrous sulfate discharged from titanium dioxide production are put into water to be heated and fully dissolved, wherein, the impurity titanyl sulfate is hydrolyzed into metatitanic acid precipitate, and after sedimentation separation, clear liquid is taken as ferrous salt water solution for producing iron oxide black.
3. The method for producing iron oxide black according to claim 1 or 2, characterized in that: the oxidation reaction condition is that the oxidation reaction is carried out at the temperature of 90-102 ℃ and the PH value of 7.5-9.
4. The method for producing iron oxide black according to claim 1 or 2, characterized in that: the concentration of the ferrous salt water solution is 5-50%.
5. The method for producing black iron oxide according to claim 3, characterized in that: the concentration of the ferrous salt water solution is 5-50%.
6. The method for producing iron oxide black according to claim 1 or 2, characterized in that: the pH value of ferrous hydroxide gel generated by neutralizing the ferrous salt water solution and caustic soda is 7.5-9.
7. The method for producing black iron oxide according to claim 3, characterized in that: the pH value of ferrous hydroxide gel generated by neutralizing the ferrous salt water solution and caustic soda is 7.5-9.
8. The method for producing black iron oxide according to claim 4, wherein: the pH value of ferrous hydroxide gel generated by neutralizing the ferrous salt water solution and caustic soda is 7.5-9.
9. The method for producing black iron oxide according to claim 5, wherein: the pH value of ferrous hydroxide gel generated by neutralizing the ferrous salt water solution and caustic soda is 7.5-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100751124A CN100352866C (en) | 2005-06-08 | 2005-06-08 | Method for producing iron oxide black |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100751124A CN100352866C (en) | 2005-06-08 | 2005-06-08 | Method for producing iron oxide black |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1709985A true CN1709985A (en) | 2005-12-21 |
| CN100352866C CN100352866C (en) | 2007-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100751124A Active CN100352866C (en) | 2005-06-08 | 2005-06-08 | Method for producing iron oxide black |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538420B (en) * | 2008-03-21 | 2012-02-22 | 北京康之维科技有限公司 | Method and equipment for shearing-cycling stirring type iron oxide orange production |
| CN102502878A (en) * | 2011-10-18 | 2012-06-20 | 山西大同大学 | Method for preparing nano iron oxide black pigment from dust |
| CN102502875A (en) * | 2011-10-11 | 2012-06-20 | 安徽明珠颜料科技有限公司 | Method for synthersizing iron oxide black by taking lime as raw material |
| CN102604434A (en) * | 2012-02-21 | 2012-07-25 | 升华集团德清华源颜料有限公司 | Preparation method of coated iron oxide black with medium temperature resistance |
| CN103289443A (en) * | 2013-05-23 | 2013-09-11 | 铜陵瑞莱科技有限公司 | Method for preparing medium-temperature-resistant iron oxide black granules |
| CN104071852A (en) * | 2013-03-25 | 2014-10-01 | 北京三聚环保新材料股份有限公司 | Preparation process for iron oxide black |
| CN104108814A (en) * | 2014-07-22 | 2014-10-22 | 四川龙蟒钛业股份有限公司 | Method for treating rutile titanium dioxide waste water |
| CN104386761A (en) * | 2014-11-13 | 2015-03-04 | 常熟铁红厂有限公司 | Preparation method of high-tinting-strength iron oxide black paint |
| CN105086517A (en) * | 2015-07-27 | 2015-11-25 | 安徽明珠颜料科技有限公司 | Ferric oxide black pigment with refreshing and consciousness-restoring functions and preparation method thereof |
| CN104016418B (en) * | 2014-06-27 | 2016-01-20 | 四川金沙纳米技术有限公司 | Titanium dioxide waste residue ferrous sulfate is utilized to prepare the method for iron oxide black fast |
| CN107200359A (en) * | 2016-03-17 | 2017-09-26 | 北京中金瑞丰环保科技有限公司 | A kind of iron oxide pigment and its production method |
| CN113772741A (en) * | 2021-09-06 | 2021-12-10 | 江苏宇星科技有限公司 | Method for producing iron oxide black by liquid phase synthesis |
| CN116425207A (en) * | 2022-01-04 | 2023-07-14 | 宜兴华谊一品着色科技有限公司 | Preparation method of high blue phase iron oxide black |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5202043A (en) * | 1985-01-09 | 1993-04-13 | Bayer Aktiengesellschaft | Process for the preparation of isometric magnetic iron oxide |
| CN1590304A (en) * | 2003-09-05 | 2005-03-09 | 李景钞 | Comprehensive utilization method of ferrous sulfate waste water and waste iron scraps |
| CN1218882C (en) * | 2003-12-03 | 2005-09-14 | 南京工业大学 | High-hysteresis heat generating capacity iron oxide magnetic powder for tumor magnetic thermotherapy and preparation method thereof |
-
2005
- 2005-06-08 CN CNB2005100751124A patent/CN100352866C/en active Active
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| CN101538420B (en) * | 2008-03-21 | 2012-02-22 | 北京康之维科技有限公司 | Method and equipment for shearing-cycling stirring type iron oxide orange production |
| CN102502875A (en) * | 2011-10-11 | 2012-06-20 | 安徽明珠颜料科技有限公司 | Method for synthersizing iron oxide black by taking lime as raw material |
| CN102502878A (en) * | 2011-10-18 | 2012-06-20 | 山西大同大学 | Method for preparing nano iron oxide black pigment from dust |
| CN102604434A (en) * | 2012-02-21 | 2012-07-25 | 升华集团德清华源颜料有限公司 | Preparation method of coated iron oxide black with medium temperature resistance |
| CN102604434B (en) * | 2012-02-21 | 2013-11-06 | 升华集团德清华源颜料有限公司 | Preparation method of coated iron oxide black with medium temperature resistance |
| CN104071852B (en) * | 2013-03-25 | 2016-03-30 | 北京三聚环保新材料股份有限公司 | A kind of preparation technology of iron oxide black |
| CN104071852A (en) * | 2013-03-25 | 2014-10-01 | 北京三聚环保新材料股份有限公司 | Preparation process for iron oxide black |
| CN103289443B (en) * | 2013-05-23 | 2014-12-31 | 铜陵瑞莱科技有限公司 | Method for preparing medium-temperature-resistant iron oxide black granules |
| CN103289443A (en) * | 2013-05-23 | 2013-09-11 | 铜陵瑞莱科技有限公司 | Method for preparing medium-temperature-resistant iron oxide black granules |
| CN104016418B (en) * | 2014-06-27 | 2016-01-20 | 四川金沙纳米技术有限公司 | Titanium dioxide waste residue ferrous sulfate is utilized to prepare the method for iron oxide black fast |
| CN104108814A (en) * | 2014-07-22 | 2014-10-22 | 四川龙蟒钛业股份有限公司 | Method for treating rutile titanium dioxide waste water |
| CN104108814B (en) * | 2014-07-22 | 2016-03-30 | 四川龙蟒钛业股份有限公司 | A kind of method processing Rutile type Titanium Dioxide waste water |
| CN104386761A (en) * | 2014-11-13 | 2015-03-04 | 常熟铁红厂有限公司 | Preparation method of high-tinting-strength iron oxide black paint |
| CN105086517A (en) * | 2015-07-27 | 2015-11-25 | 安徽明珠颜料科技有限公司 | Ferric oxide black pigment with refreshing and consciousness-restoring functions and preparation method thereof |
| CN107200359A (en) * | 2016-03-17 | 2017-09-26 | 北京中金瑞丰环保科技有限公司 | A kind of iron oxide pigment and its production method |
| CN113772741A (en) * | 2021-09-06 | 2021-12-10 | 江苏宇星科技有限公司 | Method for producing iron oxide black by liquid phase synthesis |
| CN116425207A (en) * | 2022-01-04 | 2023-07-14 | 宜兴华谊一品着色科技有限公司 | Preparation method of high blue phase iron oxide black |
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| Publication number | Publication date |
|---|---|
| CN100352866C (en) | 2007-12-05 |
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Assignee: Hubei Wan run industry and Trade Development Co., Ltd. Assignor: Liu Shiqi Contract fulfillment period: 2009.2.23 to 2025.6.8 Contract record no.: 2009990000197 Denomination of invention: Method for producing iron oxide black Granted publication date: 20071205 License type: Exclusive license Record date: 20090318 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.2.23 TO 2025.6.8; CHANGE OF CONTRACT Name of requester: HUBEI WANRUN INDUSTRIAL FOREIGN TRADE DEVELOPMENT Effective date: 20090318 |
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Owner name: HUBEI WANRUN NEW ENERGY TECHNOLOGY DEVELOPMENT CO. Free format text: FORMER OWNER: LIU SHIQI Effective date: 20120131 |
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Free format text: CORRECT: ADDRESS; FROM: 518048 SHENZHEN, GUANGDONG PROVINCE TO: 442003 SHIYAN, HUBEI PROVINCE |
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Effective date of registration: 20120131 Address after: 442003 Shiyan City, Hubei province Zhangwan District Huaguo Road No. 111 Patentee after: Hubei Wanrun New Energy Technology Development Co.,Ltd. Address before: 518048 B-607, Futian District International Chamber of Commerce, Shenzhen, Guangdong Patentee before: Liu Shiqi |
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Address after: 442003 Shiyan City, Hubei province Zhangwan District Huaguo Road No. 111 Patentee after: Hubei Wanrun New Energy Technology Co., Ltd Address before: 442003 Shiyan City, Hubei province Zhangwan District Huaguo Road No. 111 Patentee before: HUBEI WANRUN NEW ENERGY TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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