CN100542957C - A kind of prilling process of anhydrous sodium sulphate - Google Patents
A kind of prilling process of anhydrous sodium sulphate Download PDFInfo
- Publication number
- CN100542957C CN100542957C CNB2007101395959A CN200710139595A CN100542957C CN 100542957 C CN100542957 C CN 100542957C CN B2007101395959 A CNB2007101395959 A CN B2007101395959A CN 200710139595 A CN200710139595 A CN 200710139595A CN 100542957 C CN100542957 C CN 100542957C
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- China
- Prior art keywords
- anhydrous sodium
- sodium sulphate
- powder
- granulation
- particle
- 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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- Glanulating (AREA)
Abstract
A kind of prilling process of anhydrous sodium sulphate is with the Na that contains 10wt%～25wt%
2SO
4Solution is made binding agent, with anhydrous sodium sulphate granulation in granulating disc, drying, screening, pack Φ 1mm～Φ 5mm form of spherical particles anhydrous sodium sulphate.Na in the product
2SO
4Content 〉=98.0%, hardness 〉=10N/cm
2, this product does not contain the impurity that other binding agent is brought into, has that particle is smooth, even, hardness is high, the purity advantages of higher.
Description
Affiliated technical field:
The invention belongs to a kind of anhydrous sodium sulphate (Na
2SO
4) prilling process of powder.
Background technology:
Anhydrous sodium sulphate claims Sodium sulfate anhydrous.min(99) again, is a kind of important chemical material, and normally used product is powdery in the industry.Powder-like product in use causes dust pollution easily, and flowability is also relatively poor.And anhydrous sodium sulphate granulation does not at present appear in the newspapers, and the granulation on the fertilizer industry all adopts the non-fertilizer material of some Attapulgite classes to make binding agent, can influence the principal constituent content of granulation product like this, can cause impurity to enter simultaneously, influences chemical industry and uses.
Summary of the invention:
The objective of the invention is to propose a kind of prilling process of anhydrous sodium sulphate, should satisfy client's service requirements, reduce dust pollution as far as possible, can't reduce its effective constituent.
The technical solution adopted in the present invention is: adopt the Na that contains 10wt%～25wt%
2SO
4Solution is made adhesive for granulating;
Granulation process is:
Pour the anhydrous sodium sulphate powder into the granulating disc granulation zone, get the described Na that accounts for powder amount about 1/4th
2SO
4Solution slowly evenly adds in the powder and carries out granulation, uses 1mm, 6mm two layer screen mesh screen branch then, the particle of 1mm～6mm is carried out drying, use 1mm, 5mm two layer screen mesh screen branch again, the particulate product of 1mm～5mm is sieved out, make the particle anhydrous sodium sulphate, and meet following technical indicator:
Na
2SO
4≥98.0％
Hardness 〉=10N/cm
2
Granularity 1mm～5mm.
In order to guarantee the intensity of product particle, binder solution concentration is also proposed area requirement: during concentration＜10wt%, the pellet hardness of producing is little, but during 25wt%, soltion viscosity is big, and is mobile poor, be difficult to operation, therefore, select between binder solution concentration 10wt%～25wt%.
Adopt method provided by the invention to carry out the anhydrous sodium sulphate granulation for powders, have characteristics such as less investment, technology is simple, easy to operate, cost is low, its product does not contain the impurity that other binding agent is brought into, has that particle is smooth, even, hardness is high, the purity advantages of higher.
Embodiment:
Embodiment 1:
To contain Na
2SO
498.2% anhydrous sodium sulphate powder is poured the granulating disc granulation zone into, slowly adds the Na of 10wt%
2SO
4Solution (accounting for powder amount about 25%) carries out granulation as binding agent, with 1mm, 6mm two layer screen mesh screen branch, the particle of 1mm～6mm is put into the vibratory liquefaction drying bed, 150 ℃～200 ℃ of inlet temperature, 80 ℃～110 ℃ of air outlet temperatures, the product that comes out is used 1mm, 5mm two layer screen mesh screen branch again, with Φ 1mm～Φ 5mm particle pack the particle anhydrous sodium sulphate.Twice screening gained small pellets returned granulating disc granulation again, and big pellet turns back to granulating disc granulation again after crushed again.Its examination and test of products result is:
Na
2SO
4：98.0％
Hardness: 12N/cm
2
Granularity: Φ 1mm～Φ 5mm.
Embodiment 2:
To contain Na
2SO
498.6% anhydrous sodium sulphate powder is poured the granulating disc granulation zone into, slowly adds the Na of 15wt%
2SO
4Solution (accounting for powder amount about 25%) carries out granulation as binding agent, and all the other operations make the particle anhydrous sodium sulphate with embodiment 1.Its examination and test of products result is:
Na
2SO
4：98.5％
Hardness: 14N/cm
2
Granularity: Φ 1mm～Φ 5mm.
Embodiment 3:
To contain Na
2SO
499.1% anhydrous sodium sulphate powder is poured the granulating disc granulation zone into, slowly adds the Na of 20wt%
2SO
4Solution (accounting for powder amount about 25%) carries out granulation as binding agent, and all the other operations make the particle anhydrous sodium sulphate with embodiment 1 according to example 1.Its examination and test of products result is:
Na
2SO
4：99.0％
Hardness: 15N/cm
2
Granularity: Φ 1mm～Φ 5mm.
Embodiment 4
To contain Na
2SO
499.6% anhydrous sodium sulphate powder is poured the granulating disc granulation zone into, slowly adds the Na of 25wt%
2SO
4Solution (accounting for powder amount about 25%) carries out granulation as binding agent, and all the other operations make the particle anhydrous sodium sulphate with embodiment 1 according to example 1.Its examination and test of products result is:
Na
2SO
4：99.4％
Hardness: 18N/cm
2
Granularity: Φ 1mm～Φ 5mm.
Claims (2)
1. the prilling process of an anhydrous sodium sulphate is characterized in that: adopt the Na that contains 10wt%～25wt%
2SO
4Solution is made adhesive for granulating;
Granulation process is:
Pour the anhydrous sodium sulphate powder into the granulating disc granulation zone, get the described Na that accounts for powder amount 1/4th
2SO
4Solution slowly evenly adds in the powder and carries out granulation, uses 1mm, 6mm two layer screen mesh screen branch then, the particle of 1mm～6mm is carried out drying, use 1mm, 5mm two layer screen mesh screen branch again, the particulate product of 1mm～5mm is sieved out, make the particle anhydrous sodium sulphate, and meet following technical indicator:
Na
2SO
4≥98.0％
Hardness 〉=10N/cm
2
Granularity 1mm～5mm.
2. the prilling process of a kind of anhydrous sodium sulphate as claimed in claim 1 is characterized in that the powder that adds in the granulating disc granulation zone is to contain Na
2SO
4〉=98.0% anhydrous sodium sulphate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101395959A CN100542957C (en) | 2007-10-18 | 2007-10-18 | A kind of prilling process of anhydrous sodium sulphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101395959A CN100542957C (en) | 2007-10-18 | 2007-10-18 | A kind of prilling process of anhydrous sodium sulphate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101172625A CN101172625A (en) | 2008-05-07 |
| CN100542957C true CN100542957C (en) | 2009-09-23 |
Family
ID=39421413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101395959A Expired - Fee Related CN100542957C (en) | 2007-10-18 | 2007-10-18 | A kind of prilling process of anhydrous sodium sulphate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100542957C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103214208B (en) * | 2013-04-25 | 2015-05-20 | 山西凯迪建材有限公司 | Preparation method of powdery polycarboxylate superplasticizer |
| CN106622021B (en) * | 2016-11-24 | 2019-05-10 | 翁源广业清怡食品科技有限公司 | A kind of preparation method of granular 2- tert-butyl hydroquinone |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3888635A (en) * | 1973-09-26 | 1975-06-10 | Ozark Mahoning Co | Agglomerating sodium sulfate |
| GB1425074A (en) * | 1972-12-08 | 1976-02-18 | Procter & Gamble | Sodium sulphate agglomeration process |
| US4668242A (en) * | 1984-06-19 | 1987-05-26 | Italkali Societa Italiana Sali Alcalini S.P.A. | Process for producing granulated potassium sulphate and potassium magnesium sulphates, and the granulates obtained thereby |
| CN87105366A (en) * | 1986-07-30 | 1988-02-10 | 窒素公司 | Granular potassium sulfate and method for producing same |
| CN1810728A (en) * | 2005-11-02 | 2006-08-02 | 大连爱思凯矿产有限公司 | Natural granular magnesium sulfate fertilizer and its prepn process |
-
2007
- 2007-10-18 CN CNB2007101395959A patent/CN100542957C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1425074A (en) * | 1972-12-08 | 1976-02-18 | Procter & Gamble | Sodium sulphate agglomeration process |
| US3888635A (en) * | 1973-09-26 | 1975-06-10 | Ozark Mahoning Co | Agglomerating sodium sulfate |
| US4668242A (en) * | 1984-06-19 | 1987-05-26 | Italkali Societa Italiana Sali Alcalini S.P.A. | Process for producing granulated potassium sulphate and potassium magnesium sulphates, and the granulates obtained thereby |
| CN87105366A (en) * | 1986-07-30 | 1988-02-10 | 窒素公司 | Granular potassium sulfate and method for producing same |
| CN1810728A (en) * | 2005-11-02 | 2006-08-02 | 大连爱思凯矿产有限公司 | Natural granular magnesium sulfate fertilizer and its prepn process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101172625A (en) | 2008-05-07 |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20090923 Termination date: 20141018 |
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