CN1431174A - Method for producing composite fertilizer with sulfur based - Google Patents
Method for producing composite fertilizer with sulfur based Download PDFInfo
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- CN1431174A CN1431174A CN 02109905 CN02109905A CN1431174A CN 1431174 A CN1431174 A CN 1431174A CN 02109905 CN02109905 CN 02109905 CN 02109905 A CN02109905 A CN 02109905A CN 1431174 A CN1431174 A CN 1431174A
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- based compound
- compound fertilizer
- composite fertilizer
- producing composite
- sulfuric acid
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Abstract
A S-base composite fertilizer is prepared from potassium chloride, sulfuric acid, gas-state ammonia and urea, and features that in its preparing process, the calcium perphosphate and ardealite, instead of monoammonium phosphate, are used. Its advantage is no "scar" problem in its granulating step.
Description
Affiliated field
The present invention relates to a kind of production method of S-based compound fertilizer, belong to chemical field.
Background technology
Chinese patent application number is 01107733.6 patent application, discloses a kind of production method of producing S-based compound fertilizer.This method with sulfuric acid in heating kettle, be heated to 90 ℃ in reactive tank, carry out successive reaction on 100-130 ℃ the temperature with quantitative Repone K after overflow to the nitration mixture groove, then with quantitative monoammonium phosphate after the reaction of nitration mixture groove and sal enixum, neutralize with gas ammonia, prepare the S-based compound fertilizer slip of certain degree of neutralization, after finished product is produced in the spraying granulation.Though this method can be produced the S-based compound fertilizer of height, middle concentration, cost is higher and fail to solve " scabbing " problem of tablets press in the production process.
Summary of the invention
The production method that the purpose of this invention is to provide a kind of S-based compound fertilizer.This method is the raw material production S-based compound fertilizer with Repone K, sulfuric acid, gas ammonia, urea.It is characterized in that: in the nitration mixture process, use calcium superphosphate and ardealite instead monoammonium phosphate.Since the present invention with calcium superphosphate and chemical spent material ardealite instead monoammonium phosphate, not only reduced production cost but also changed the physicals of S-based compound fertilizer slip, solved " scabbing " problem in the granulation process.
Embodiment
Sulfuric acid is heated to 90 ℃ in heating kettle after, with quantitative Repone K low-temp reaction in reactive tank, the sal enixum overflow of producing is to the nitration mixture groove; Then quantitative calcium superphosphate and phosphogypsum slip and sal enixum are carried out the nitration mixture reaction in the nitration mixture groove and form solution, again with the gas ammonia neutralization, and after the slip after adding such as the urea neutralization fully dissolved mixing, formation S-based compound fertilizer slip; Enter at last and carry out granulation in the spray granulating machine.
Various raw material processing compounds are:
Sulfuric acid: Repone K: calcium superphosphate: phosphogypsum: urea: liquefied ammonia=1: 0.67: 1.3: 0.5: 0.1: 0.24
Be to solve " scabbing " problem, in the whitewashing process with air pressure by original 2kgf/m
2Bring up to 3.5kgf/cm
2, improve the slurry atomization degree.
For increasing the returning charge amount, improve output, can be with the little mesh of screening plant by original 1.5mm
2Change 2mm into
2, increase the nucleus of coating granulation with this.
Claims (1)
1, a kind of production of sulfur-based compound fertilizer method, it is that raw material is produced with Repone K, sulfuric acid, gas ammonia, urea etc.It is characterized in that: in the nitration mixture process, add calcium superphosphate and ardealite instead monoammonium phosphate produce in, the S-based compound fertilizer of lower concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02109905 CN1431174A (en) | 2002-01-08 | 2002-01-08 | Method for producing composite fertilizer with sulfur based |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02109905 CN1431174A (en) | 2002-01-08 | 2002-01-08 | Method for producing composite fertilizer with sulfur based |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1431174A true CN1431174A (en) | 2003-07-23 |
Family
ID=4740842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02109905 Pending CN1431174A (en) | 2002-01-08 | 2002-01-08 | Method for producing composite fertilizer with sulfur based |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1431174A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100413813C (en) * | 2006-04-07 | 2008-08-27 | 聊城鲁西化工第四化肥厂 | Prodn method of high azote, high potassium and sulfenyl 3-element compound fertilizer |
| CN101318855B (en) * | 2007-06-07 | 2011-04-20 | 湖北洋丰股份有限公司 | High-efficiency high-concentration sulphur based complex fertilizer |
-
2002
- 2002-01-08 CN CN 02109905 patent/CN1431174A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100413813C (en) * | 2006-04-07 | 2008-08-27 | 聊城鲁西化工第四化肥厂 | Prodn method of high azote, high potassium and sulfenyl 3-element compound fertilizer |
| CN101318855B (en) * | 2007-06-07 | 2011-04-20 | 湖北洋丰股份有限公司 | High-efficiency high-concentration sulphur based complex fertilizer |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |