CN1634808A - Process for preparing sulphur-coating release controlled fertilizer - Google Patents
Process for preparing sulphur-coating release controlled fertilizer Download PDFInfo
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- CN1634808A CN1634808A CN 200310122833 CN200310122833A CN1634808A CN 1634808 A CN1634808 A CN 1634808A CN 200310122833 CN200310122833 CN 200310122833 CN 200310122833 A CN200310122833 A CN 200310122833A CN 1634808 A CN1634808 A CN 1634808A
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Abstract
The present invention provides a method for manufacturing sulfur-coating slow release fertilizer, comprising raw material preheating, sulfur coating, sealant coating, conditioning, etc. The inventive method integrates the coating granulation procedure with the product post processing procedure, as a result, the production process is simplified, the energy consumption, invest and operating costs are reduced. The sulfur-coating slow release fertilizer product has smooth apparentness and high compression strength, can reduce the whole release speed of the fertilizer nutrient and improve the fertilizer nutrient availability, complement sulfur element in various farming, forestry and economic crops and reduce fertilizer application frequency, save labour force.
Description
Technical field
The present invention relates to a kind of synergistic processing method of chemical fertilizer, relate in particular to a kind of manufacture method that is coated with the sulphur release controlled fertilizer.
Background technology
The release chemical fertilizer makes 1 by following four kinds of modes usually), the synthetic slow machine nitrogenous fertilizer that is dissolved with, as urea formaldehyde, isobutyl fork allophanamide etc.; 2), synthetic slow molten inorganic nitrogenous fertilizer, as magnesium ammonium phosphate etc.; 3), coating (wrapping up in) release chemical fertilizer, as sulfur-coated urea, coating urea etc.; 4), produce the slow release fertilizer of inhibitor improvement, as long-term efficiency bicarbonate ammonium (adding the DCD of improvement), long-acting carbamide (adding HQ) etc.
The sulfur-coated urea technology early than 1961 by U.S.'s success of the test, built up commercial running gear in 1970.In recent years, Mitsui East Asia chemical company also is applied to coating technique on the nitrogen-phosphorus-potassium compound fertilizer except that sulfur-coated urea.At present, China does not still have the report that adopts curtain coating technique suitability for industrialized production to be coated with the sulphur release controlled fertilizer.
Summary of the invention
Purpose of the present invention is to provide a kind of brand-new manufacture method that is coated with the sulphur release controlled fertilizer.
To achieve these goals, the present invention has adopted following technical scheme: a kind of manufacture method that is coated with the sulphur release controlled fertilizer is: be raw material with the granular chemical fertilizer, adopt the following steps manufacturing:
Step 1, preheating material
Granular chemical fertilizer placed carry out preheating in the tablets press;
Step 2, coating sulphur
Place fusion apparatus to heat industrial sulphur, make fusion sulphur, make the good granular chemical fertilizer of preheating in tablets press, form the material heavy curtain, fusion sulphur is sprayed on the chemical fertilizer granule surface equably, form and be coated with the sulfur granules chemical fertilizer;
Step 3, coating sealing agent
Industrial machinery oil or industrial paraffin and polyethylene be mixed place fusion apparatus to heat, make melting sealed dose, make to be coated with the sulfur granules chemical fertilizer and in tablets press, to form the material heavy curtain, melting sealed dose is sprayed on equably is coated with the fertile particle surface of sulfuration, form sealing and be coated with the sulfur granules chemical fertilizer;
Step 4, nurse one's health into product
To be sealed be coated with the sulfur granules chemical fertilizer and be cooled to below 50 ℃ after, in tablets press, add amendment by material feeder, be coated with the fertile particle surface of sulfuration in sealing and cover one deck amendment, make and be coated with sulphur release controlled fertilizer product.
The preheating temperature of the granular chemical fertilizer described in the step 1 is controlled between 10-90 ℃.
The melt temperature of the fusion sulphur described in the step 2 is controlled between 130-160 ℃, and coating temperature is controlled between 10-110 ℃, and the sulphur glue spread is the 10-28% of raw material fertilizer weight.
Industrial machinery oil in described in the step 3 melting sealed dose or industrial paraffin and poly weight percent proportioning are 90-60: 10-40, melting sealed dose melt temperature is controlled between 50-120 ℃, coating temperature is controlled between 60-90 ℃, and the sealing agent glue spread is the 1-5% of raw material fertilizer weight.
Amendment described in the step 4 is one or more the mixture in kaolin, ground dolomite, bentonite, the diatomite, and the amendment add-on is the 0-2% of raw material fertilizer weight.
Described tablets press is a kind of in granulating disc, spray granulating machine, rotary drum granulator or the rotary drum curtain tablets press.
The spraying method of described fusion sulphur and melting sealed dose is pressure type or aerosol.
Described feed particles chemical fertilizer is a kind of in granular urea, nitrogen-phosphorus-potassium compound fertilizer, phosphorus ammonium, Repone K, urine base nitrogen-phosphorus-potassium compound fertilizer, the sulfenyl nitrogen-phosphorus-potassium compound fertilizer.
Add moderate-element compound and/or trace compound in the described feed particles chemical fertilizer.
Described moderate-element compound is one or more the mixture in calcium sulfate, nitrocalcite, sal epsom, the potassium magnesium sulfate, and described trace compound is one or more the mixture in copper sulfate, cupric oxide, ammonium molybdate, Sodium orthomolybdate, boric acid, borax, ferrous sulfate, chelated iron, zinc sulfate, zinc oxide, zinc chloride, manganous sulfate, manganese oxide, the Manganous chloride tetrahydrate.
The manufacture method that the present invention is coated with the sulphur release controlled fertilizer has following advantage and characteristics:
1, utilize fusion sulphur that the granular chemical fertilizer raw material is carried out the method that physics wraps up, produce slowly-releasing multi-usage fertilizer, technological process is simple, and production cost is low, goes for various factories that makes urea and composite fertilizer factory.
2, the granular chemical fertilizer raw material can use fusion sulphur to be coated with in the wide region of normal temperature to 90 ℃.
3, sulphur is not only the coated fertilizer that plays a major role in the slowly-releasing process, and can replenish the necessary element sulphur of plant growth to soil.
4, the granule strength that is coated with the sulphur release controlled fertilizer that manufacturing is come out improves greatly than the granule strength of raw material fertilizer.
5, production system does not have returning charge, the production efficiency height.
6, the surface lubrication that is coated with the sulphur release controlled fertilizer that manufactures does not have any caking phenomenon.
7 and the prior art ratio, have flow process weak point, reduced investment, easy and simple to handle, characteristics such as energy consumption is low.
8, product can be made into the compound manure that contains multiple moderate-element and trace element, to adapt to the requirement of Different Crop, soil and weather.
Description of drawings
Fig. 1 is the flow diagram that the present invention is coated with the manufacture method of sulphur release controlled fertilizer.
Embodiment
Embodiment 1
Further specify as follows below in conjunction with Fig. 1 and embodiment to the manufacture method that the present invention is coated with the sulphur release controlled fertilizer:
Get particle diameter and be 560 kilograms of the urea-base compound fertilizers of 2-4mm, place the single-deck tablets press, be preheated to 60 ℃ with warm air.With sulphur heating and melting in preheating can, keeping melt temperature is 150 ℃.Start the single-deck tablets press, make the good urea-base compound fertilizer of preheating in tablets press, form the material heavy curtain, 170 kilograms of fusion sulphur are sprayed on the urea-base compound fertilizer particle surface equably with pre-streamer, form the sulphur coating.80 kilograms of industrial paraffins are mixed for 20 kilograms with polyethylene,, make melting sealed dose at 110 ℃ of following heating and meltings, with air in the aerosol mode with 11 kilograms melting sealed dose sulphur coatingsurface that is sprayed on material equably, form seal coating.Material adds 5 kilograms of ground dolomite amendments after being cooled to below 50 ℃, at seal coating surface coverage one deck amendment, promptly become slowly-releasing after conditioning is finished and be coated with sulphur urea-base compound fertilizer product.
Embodiment 2
Get particle diameter and be 800 kilograms of the urea-base compound fertilizers of 2-4mm, place the single-deck tablets press, controlled temperature is 15 ℃.With sulphur heating and melting in preheating can, keeping melt temperature is 150 ℃.Start the single-deck tablets press, make the good urea-base compound fertilizer of preheating in tablets press, form the material heavy curtain, 205 kilograms in fusion sulphur is sprayed on the urea-base compound fertilizer particle surface equably with pre-streamer, form the sulphur coating.85 kilograms of industrial paraffins are mixed for 15 kilograms with polyethylene,, make melting sealed dose at 110 ℃ of following heating and meltings, with air in the aerosol mode with 16 kilograms melting sealed dose sulphur coatingsurface that is sprayed on material equably, form seal coating.Material adds 16 kilograms of ground dolomite amendments after being cooled to below 50 ℃, at seal coating surface coverage one deck amendment, promptly become slowly-releasing after conditioning is finished and be coated with sulphur urea-base compound fertilizer product.
Embodiment 3
Get particle diameter and be 400 kilograms of the granular ureas of 2-4mm, place the single-deck tablets press, be preheated to 25 ℃ with warm air.With sulphur heating and melting in preheating can, keeping melt temperature is 145 ℃.Start the single-deck tablets press, make the good urea of preheating in tablets press, form the material heavy curtain, 95 kilograms of fusion sulphur are sprayed on the urea granules surface equably with pre-streamer, form the sulphur coating.75 kilograms of industrial paraffins are mixed for 25 kilograms with polyethylene,, make melting sealed dose at 110 ℃ of following heating and meltings, with air in the aerosol mode with 12 kilograms melting sealed dose sulphur coatingsurface that is sprayed on material equably, form seal coating.Material promptly becomes slowly-releasing sulfur-coated urea product after being cooled to below 50 ℃.
Embodiment 4
Get particle diameter and be 400 kilograms of the granular ureas of 2-4mm, place rotary drum granulator, be preheated to 65 ℃ with warm air.With sulphur heating and melting in preheating can, keeping melt temperature is 145 ℃.Start rotary drum granulator, make the good urea of preheating in tablets press, form the material heavy curtain, 72 kilograms of fusion sulphur are sprayed on the urea granules surface equably with pre-streamer, form the sulphur coating.65 kilograms of industrial paraffins are mixed for 35 kilograms with polyethylene,, make melting sealed dose at 110 ℃ of following heating and meltings, with air in the aerosol mode with 20 kilograms melting sealed dose sulphur coatingsurface that is sprayed on material equably, form seal coating.Material promptly becomes slowly-releasing sulfur-coated urea product after being cooled to below 50 ℃.
Claims (10)
1, a kind of manufacture method that is coated with the sulphur release controlled fertilizer is characterized in that: be raw material with the granular chemical fertilizer, adopt the following steps manufacturing:
Step 1, preheating material
Granular chemical fertilizer placed carry out preheating in the tablets press;
Step 2, coating sulphur
Place fusion apparatus to heat industrial sulphur, make fusion sulphur, make the good granular chemical fertilizer of preheating in tablets press, form the material heavy curtain, fusion sulphur is sprayed on the chemical fertilizer granule surface equably, form and be coated with the sulfur granules chemical fertilizer;
Step 3, coating sealing agent
Industrial machinery oil or industrial paraffin and polyethylene be mixed place fusion apparatus to heat, make melting sealed dose, make to be coated with the sulfur granules chemical fertilizer and in tablets press, to form the material heavy curtain, melting sealed dose is sprayed on equably is coated with the fertile particle surface of sulfuration, form sealing and be coated with the sulfur granules chemical fertilizer;
Step 4, nurse one's health into product
To be sealed be coated with the sulfur granules chemical fertilizer and be cooled to below 50 ℃ after, in tablets press, add amendment by material feeder, be coated with the fertile particle surface of sulfuration in sealing and cover one deck amendment, make and be coated with sulphur release controlled fertilizer product.
2, the manufacture method that is coated with the sulphur release controlled fertilizer according to claim 1, it is characterized in that: the preheating temperature of the granular chemical fertilizer described in the step 1 is controlled between 10-90 ℃.
3, the manufacture method that is coated with the sulphur release controlled fertilizer according to claim 1, it is characterized in that: the melt temperature of the fusion sulphur described in the step 2 is controlled between 130-160 ℃, coating temperature is controlled between 10-110 ℃, and the sulphur glue spread is the 10-28% of raw material fertilizer weight.
4, the manufacture method that is coated with the sulphur release controlled fertilizer according to claim 1, it is characterized in that: industrial machinery oil in melting sealed dose described in the step 3 or industrial paraffin and poly weight percent proportioning are 90-60: 10-40, melting sealed dose melt temperature is controlled between 50-120 ℃, coating temperature is controlled between 60-90 ℃, and the sealing agent glue spread is the 1-5% of raw material fertilizer weight.
5, the manufacture method that is coated with the sulphur release controlled fertilizer according to claim 1, it is characterized in that: the amendment described in the step 4 is one or more the mixture in kaolin, ground dolomite, bentonite, the diatomite, and the amendment add-on is the 0-2% of raw material fertilizer weight.
6, the manufacture method that is coated with the sulphur release controlled fertilizer according to claim 1 is characterized in that: described tablets press is a kind of in granulating disc, spray granulating machine, rotary drum granulator or the rotary drum curtain tablets press.
7, the manufacture method that is coated with the sulphur release controlled fertilizer according to claim 1 is characterized in that: the spraying method of described fusion sulphur and melting sealed dose is pressure type or aerosol.
8, the manufacture method that is coated with the sulphur release controlled fertilizer according to claim 1 is characterized in that: described feed particles chemical fertilizer is a kind of in granular urea, nitrogen-phosphorus-potassium compound fertilizer, phosphorus ammonium, Repone K, urine base nitrogen-phosphorus-potassium compound fertilizer, the sulfenyl nitrogen-phosphorus-potassium compound fertilizer.
9, the manufacture method that is coated with the sulphur release controlled fertilizer according to claim 8 is characterized in that: add moderate-element compound and/or trace compound in the described feed particles chemical fertilizer.
10, the manufacture method that is coated with the sulphur release controlled fertilizer according to claim 8, it is characterized in that: described moderate-element compound is one or more the mixture in calcium sulfate, nitrocalcite, sal epsom, the potassium magnesium sulfate, and described trace compound is one or more the mixture in copper sulfate, cupric oxide, ammonium molybdate, Sodium orthomolybdate, boric acid, borax, ferrous sulfate, chelated iron, zinc sulfate, zinc oxide, zinc chloride, manganous sulfate, manganese oxide, the Manganous chloride tetrahydrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310122833 CN1274642C (en) | 2003-12-26 | 2003-12-26 | Process for preparing sulphur-coating release controlled fertilizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310122833 CN1274642C (en) | 2003-12-26 | 2003-12-26 | Process for preparing sulphur-coating release controlled fertilizer |
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| CN1634808A true CN1634808A (en) | 2005-07-06 |
| CN1274642C CN1274642C (en) | 2006-09-13 |
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| CN 200310122833 Expired - Fee Related CN1274642C (en) | 2003-12-26 | 2003-12-26 | Process for preparing sulphur-coating release controlled fertilizer |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007022732A1 (en) * | 2005-08-26 | 2007-03-01 | Nanjing University Of Science And Technology | A composite slow-release coated fertilizer without environmental pollution |
| WO2007025462A1 (en) * | 2005-09-01 | 2007-03-08 | Nanjing University Of Science And Technology | A slow-release fertilizer coated with degradable polymer |
| CN101172912B (en) * | 2007-11-01 | 2010-06-02 | 山东农业大学 | Control-release fertilizer special for fruit vegetable plants and method for producing the same |
| CN102417426A (en) * | 2011-08-15 | 2012-04-18 | 山东金山化肥有限公司 | Production method of spraying sulfoacid resin type sustained and controlled-release fertilizer |
| CN104355918A (en) * | 2014-12-09 | 2015-02-18 | 徐同珊 | Manufacturing method of sustained-release or controlled-release chemical fertilizer based on echinopsis tubiflora spines |
| WO2015070496A1 (en) * | 2013-11-15 | 2015-05-21 | 大连汉枫集团有限公司 | Sulfur-coated urea slow-release fertilizer and preparation method therefor |
| CN105061024A (en) * | 2015-07-28 | 2015-11-18 | 魏占波 | Modified diammonium phosphate |
| CN105175098A (en) * | 2015-07-28 | 2015-12-23 | 魏占波 | Modified ammonium sulfate |
| CN107667083A (en) * | 2015-05-22 | 2018-02-06 | 霍尼韦尔国际公司 | Containing the fertilizer coating based on wax based on polyethylene or polyacrylic polymer |
| CN107711014A (en) * | 2017-10-30 | 2018-02-23 | 民勤县金诚农业发展有限公司 | One kind has sustained release performance crop fertilizer sowing mechanism |
| CN112062633A (en) * | 2020-09-02 | 2020-12-11 | 湖北富邦新材料有限公司 | Novel nutritional functional granular fertilizer and preparation method thereof |
| CN113429976A (en) * | 2021-06-22 | 2021-09-24 | 湖南四环环保科技有限公司 | Soil remediation agent and preparation method thereof |
-
2003
- 2003-12-26 CN CN 200310122833 patent/CN1274642C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007022732A1 (en) * | 2005-08-26 | 2007-03-01 | Nanjing University Of Science And Technology | A composite slow-release coated fertilizer without environmental pollution |
| WO2007025462A1 (en) * | 2005-09-01 | 2007-03-08 | Nanjing University Of Science And Technology | A slow-release fertilizer coated with degradable polymer |
| CN101172912B (en) * | 2007-11-01 | 2010-06-02 | 山东农业大学 | Control-release fertilizer special for fruit vegetable plants and method for producing the same |
| CN102417426A (en) * | 2011-08-15 | 2012-04-18 | 山东金山化肥有限公司 | Production method of spraying sulfoacid resin type sustained and controlled-release fertilizer |
| WO2015070496A1 (en) * | 2013-11-15 | 2015-05-21 | 大连汉枫集团有限公司 | Sulfur-coated urea slow-release fertilizer and preparation method therefor |
| CN104355918B (en) * | 2014-12-09 | 2016-05-18 | 徐同珊 | A kind of manufacture method of the sustained and controlled release chemical fertilizer based on cactus with globular thorn |
| CN104355918A (en) * | 2014-12-09 | 2015-02-18 | 徐同珊 | Manufacturing method of sustained-release or controlled-release chemical fertilizer based on echinopsis tubiflora spines |
| CN107667083A (en) * | 2015-05-22 | 2018-02-06 | 霍尼韦尔国际公司 | Containing the fertilizer coating based on wax based on polyethylene or polyacrylic polymer |
| CN105175098A (en) * | 2015-07-28 | 2015-12-23 | 魏占波 | Modified ammonium sulfate |
| CN105061024A (en) * | 2015-07-28 | 2015-11-18 | 魏占波 | Modified diammonium phosphate |
| CN107711014A (en) * | 2017-10-30 | 2018-02-23 | 民勤县金诚农业发展有限公司 | One kind has sustained release performance crop fertilizer sowing mechanism |
| CN112062633A (en) * | 2020-09-02 | 2020-12-11 | 湖北富邦新材料有限公司 | Novel nutritional functional granular fertilizer and preparation method thereof |
| CN113429976A (en) * | 2021-06-22 | 2021-09-24 | 湖南四环环保科技有限公司 | Soil remediation agent and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN1274642C (en) | 2006-09-13 |
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Granted publication date: 20060913 Termination date: 20161226 |