CN101294007B - Method for producing high-density high-quality iron oxide yellow pigment - Google Patents
Method for producing high-density high-quality iron oxide yellow pigment Download PDFInfo
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- CN101294007B CN101294007B CN2008100625869A CN200810062586A CN101294007B CN 101294007 B CN101294007 B CN 101294007B CN 2008100625869 A CN2008100625869 A CN 2008100625869A CN 200810062586 A CN200810062586 A CN 200810062586A CN 101294007 B CN101294007 B CN 101294007B
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Abstract
The invention relates to a method for preparing inorganic pigments, more particularly relates to a method for preparing yellow high-density heavy-weight iron oxide pigments. The method comprises the following steps: preparing and oxidizing seed crystals, screening, pressing and drying to obtain filter cakess, drying the filter cakes with a double-paddle dryer and a disk-type continuous dryer, and grinding when the filter cakes is dried with the disk-type continuous dryer. The bulk density of the product is in the range of 0.70g/ml to 1.2g/ml. Compared with the common yellow iron oxide pigment, the bulk density of the yellow high-density heavy-weight iron oxide pigment is approximately doubled, the oil absorption is reduced by about 20%, the tinting strength is improved, and the consumption is reduced under the same condition for pigmentation.
Description
Technical field
The present invention relates to a kind of preparation method of mineral dye, relate in particular to the working method of ferric oxide yellow pigment.
Background technology
The main chemical compositions of ferric oxide yellow pigment is a red oxide of iron, and content is about 86%, and all the other major parts are crystal water, molecular formula: Fe
2O
3H
2O or FeOOH (hydrous iron oxide).Yellow oxide of iron coloured light has from lemon yellow to orange.Specific density 2.44～3.60g/cm
3, fusing point 350-400 ℃.Yellow oxide of iron is water insoluble, pure, be dissolved in acid.Alkaline-resisting not acidproof, non-refractory, heating surpasses 150 ℃, promptly dewaters and changes into red iron oxide, in the time of 270-300 ℃, changes comparatively rapid.The photostabilization of yellow oxide of iron, weathering resistance and resistant foul smell body are all stronger, and tinting strength and lead-chrome yellow are almost equal.Human body does not absorb, and has no side effect.So be widely used in a plurality of industries.
But the tap density of existing ferric oxide yellow pigment is about 0.5g/ml, and the oil number of yellow oxide of iron about 35g/100g, has limited the application of ferric oxide yellow pigment basically.
Summary of the invention
For the technical problem that tap density is low, oil number is high that solves above-mentioned ferric oxide yellow pigment; The working method that the purpose of this invention is to provide a kind of high-density high-quality iron oxide yellow pigment, the product that this method prepares has the advantages that oil number is low, tinctorial strength is high.
In order to realize above-mentioned purpose, the technical scheme below the present invention has adopted:
The working method of high-density high-quality iron oxide yellow pigment, this method comprises the steps:
1. a certain amount of ferrous sulfate is dropped in the crystal seed reaction container, and react with sodium hydroxide solution, and the bubbling air oxidation, final ferrous hydroxide is oxidized to the iron oxide yellow crystal seed;
2. in the bucket that cleans up, fill it up with iron sheet, the crystal seed of making is dropped in the reaction container, add a certain amount of water latting drown then; Control ferrous content standard; Open steam, air door simultaneously, control blasts the stirring action that air plays feed liquid, and casual inspection and add a barrel interior iron sheet amount;
3. be reacted to certain hour, see barrel interior feed liquid color and standard near the time, begin to scrape appearance, approximate until sample color and standard specimen, turn off steam, but still blast air, prepare blowing;
4. well-oxygenated iron oxide yellow is sieved through 200 orders when putting bucket, remove the mechanical impurity in the material, put into the finished product pond, again feed liquid is squeezed into the composite membrane pressure filter and filter rinsing, and press dry and cause filter cake shape;
5. filter cake is sent into two blade dryers and is carried out the first step drying, is transmitted by gravity and gets into the disc type successive drying, and it is dry to carry out second time, grinds simultaneously, and the particle structure of change product makes products stacked density reach 0.70g/ml～1.2g/ml;
6. blanking, test package.
As preferably, the tap density of the product that 5. above-mentioned step obtains reaches 0.90g/ml～1.05g/ml.
As preferably, above-mentioned step is the solid content of filter cake >=50% 4..
As preferably, above-mentioned step 5. after the first step drying material solid content be 70%～80%.
The high-density high-quality iron oxide yellow that method of the present invention prepares; Its product is mainly on performance; With common yellow oxide of iron following advantage is arranged relatively: the first, this density of product is than higher, and tap density is up to about 0.90g/ml～1.05g/ml; The tap density of general yellow oxide of iron is about 0.5g/ml, and tap density is higher nearly about one times than common iron oxide yellow; The second, the oil number of high-density high-quality iron oxide yellow is lower, and oil number is basically about 28g/100g, and the oil number of common yellow oxide of iron is basically about 35g/100g, than common yellow oxide of iron on the low side nearly about 20%; The 3rd, aspect Transport Package,, can adorn the product of one times of amount under the equal volume condition because density is big more, as the multipotency of freight container of common iron oxide yellow adorn 12 tons, and high-density high-quality iron oxide yellow can be adorned about 24 tons.The 4th, tinctorial strength is higher than common yellow oxide of iron, thus under equal conditions painted, can reduce the usage quantity of pigment.
The above advantage of high-density high-quality iron oxide yellow is so be widely used in a plurality of industries.Paint industry particularly, the oil number of its product is low, tinctorial strength is high, in use not only can reduce the usage quantity of red stone, can also reduce the addition of auxiliary agent in the paint such as resin, dispersion agent simultaneously.
Description of drawings
Fig. 1 is the process flow sheet of working method of the present invention.
Fig. 2 is the Electronic Speculum figure of existing yellow oxide of iron.
Fig. 3 is the Electronic Speculum figure of high-density high-quality iron oxide yellow of the present invention.
Embodiment
The working method of high-density high-quality iron oxide yellow pigment as shown in Figure 1 comprises the steps:
First part: preceding production technique
This part mainly was divided into for two steps: crystal seed preparation and oxidation.
Crystal seed prepares detailed process: a certain amount of ferrous sulfate dropped in the crystal seed reaction container, and reacts with sodium hydroxide solution, and the bubbling air oxidation, final ferrous hydroxide is oxidized to the iron oxide yellow crystal seed.
The oxidation specific operation process is following: in the bucket that cleans up, fill it up with iron sheet; The crystal seed of making is dropped in the reaction container; Add a certain amount of water latting drown then, control ferrous content standard is opened steam, air door simultaneously; Control blasts the stirring action that air plays feed liquid, and casual inspection and add a barrel interior iron sheet amount; Be reacted to certain hour, see barrel interior feed liquid color and standard near the time, begin to scrape appearance, approximate until sample color and standard specimen, turn off steam, but still blast air, prepare blowing.
Second section: aftertreatment complete processing
Well-oxygenated iron oxide yellow is sieved through 200 orders when putting bucket, remove the mechanical impurity in the material, put into the finished product pond; Again feed liquid is squeezed into composite membrane and press the worry machine to carry out overanxious rinsing (water solubles rinsing is clean), and press dry and cause filter cake shape (solid content >=50%), filter cake is sent into the two blade dryers of " worker is big " board and is carried out the first step drying; Reach about 70%～80% through exsiccant material solid content at this moment, transmit by gravity again and get into disc type continuous drier drying, carry out the exsiccant while second time; Grind; Thereby change the particle structure of product, make its tap density up to arriving 0.90g/ml～1.05g/ml, test package.The Electronic Speculum figure of product is as shown in Figure 3, and the two ends of yellow oxide of iron and edge are all whole by mill.
Claims (2)
1. the working method of high-density high-quality iron oxide yellow pigment is characterized in that this method comprises the steps:
1. a certain amount of ferrous sulfate is dropped in the crystal seed reaction container, and react with sodium hydroxide solution, and the bubbling air oxidation, final ferrous hydroxide is oxidized to the iron oxide yellow crystal seed;
2. in the bucket that cleans up, fill it up with iron sheet, the crystal seed of making is dropped in the reaction container, add a certain amount of water latting drown then; Control ferrous content standard; Open steam, air door simultaneously, control blasts the stirring action that air plays feed liquid, and casual inspection and add a barrel interior iron sheet amount;
3. be reacted to certain hour, see barrel interior feed liquid color and standard near the time, begin to scrape appearance, approximate until sample color and standard specimen, turn off steam, but still blast air, prepare blowing;
4. well-oxygenated iron oxide yellow is sieved through 200 orders when putting bucket, remove the mechanical impurity in the material, put into the finished product pond, again feed liquid is squeezed into the composite membrane pressure filter and filter rinsing, and press dry and cause filter cake shape, the solid content of filter cake >=50%;
5. filter cake is sent into two blade dryers and is carried out the first step drying; The material solid content is 70%～80% after the first step drying; Transmit by gravity again and get into disc type continuous drier drying, carry out the drying second time, grind simultaneously; Change the particle structure of product, make products stacked density reach 0.70g/ml～1.2g/ml;
6. blanking, test package.
2. the working method of high-density high-quality iron oxide yellow pigment according to claim 1, it is characterized in that: the tap density of the product that 5. step obtains reaches 0.90g/ml～1.05g/ml.
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| CN101294007B true CN101294007B (en) | 2012-03-07 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102390871A (en) * | 2011-08-16 | 2012-03-28 | 南通宝聚颜料有限公司 | Preparation technology for low water-absorption heavy iron oxide yellow pigment |
| CN102583572A (en) * | 2012-02-21 | 2012-07-18 | 升华集团德清华源颜料有限公司 | Method for roasting iron oxide red pigment by adopting iron oxide yellow |
| CN102604438B (en) * | 2012-02-21 | 2014-09-24 | 升华集团德清华源颜料有限公司 | Iron oxide yellow pigment with low oil absorption |
| CN102604436B (en) * | 2012-02-21 | 2013-11-06 | 升华集团德清华源颜料有限公司 | Preparation method of low oil absorption iron oxide yellow |
| CN103756365A (en) * | 2013-12-04 | 2014-04-30 | 芜湖卓越纳米新材料有限公司 | Surface treatment method for nanometer calcium carbonate |
| CN106241885B (en) * | 2016-07-27 | 2017-07-11 | 升华集团德清华源颜料有限公司 | A kind of low viscosity iron oxide yellow preparation method |
Citations (4)
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|---|---|---|---|---|
| US1327061A (en) * | 1917-06-20 | 1920-01-06 | West Coast Kalsomine Company | Process of manufacturing iron compounds |
| US1368748A (en) * | 1920-01-05 | 1921-02-15 | Nat Ferrite Company | Process of manufacturing iron compounds and product |
| CN1415666A (en) * | 2002-12-04 | 2003-05-07 | 中国化工建设总公司常州涂料化工研究院 | Method for producing the yellow pigment of ferric oxide from ferrous sulphate of byproduct abolished by titanium white |
| CN101191022A (en) * | 2006-12-01 | 2008-06-04 | 德清凯孚颜料有限公司 | Heavy iron oxide yellow and preparation method thereof |
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2008
- 2008-06-24 CN CN2008100625869A patent/CN101294007B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1327061A (en) * | 1917-06-20 | 1920-01-06 | West Coast Kalsomine Company | Process of manufacturing iron compounds |
| US1368748A (en) * | 1920-01-05 | 1921-02-15 | Nat Ferrite Company | Process of manufacturing iron compounds and product |
| CN1415666A (en) * | 2002-12-04 | 2003-05-07 | 中国化工建设总公司常州涂料化工研究院 | Method for producing the yellow pigment of ferric oxide from ferrous sulphate of byproduct abolished by titanium white |
| CN101191022A (en) * | 2006-12-01 | 2008-06-04 | 德清凯孚颜料有限公司 | Heavy iron oxide yellow and preparation method thereof |
Non-Patent Citations (2)
| Title |
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| 林治华.氧化铁黄的新型干燥装置-喷雾流化干燥器的使用.《中国涂料》.1995,(第2期),45-47. * |
| 欧阳红英.利用钢铁硫酸酸洗废液制取氧化铁黄颜料.《山西冶金》.1991,第11卷(第5期),43-45. * |
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Address after: 313220, Zhejiang, Deqing County province clock tube town landscape Tak Qinghua source Pigment Co., Ltd. Patentee after: Zhejiang Huayuan pigment Limited by Share Ltd Address before: 313220, Zhejiang, Deqing County province clock tube town landscape Tak Qinghua source Pigment Co., Ltd. Patentee before: Shenghua Group Deqing Huayuan Pigment Co., Ltd. |