CN103626573B - Water-retention coated nitrogen phosphorus potassium compound fertilizer and preparation method thereof - Google Patents
Water-retention coated nitrogen phosphorus potassium compound fertilizer and preparation method thereof Download PDFInfo
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- CN103626573B CN103626573B CN201310508982.0A CN201310508982A CN103626573B CN 103626573 B CN103626573 B CN 103626573B CN 201310508982 A CN201310508982 A CN 201310508982A CN 103626573 B CN103626573 B CN 103626573B
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Abstract
The invention discloses a water-retention coated nitrogen phosphorus potassium compound fertilizer and a preparation method thereof. The water-retention coated nitrogen phosphorus potassium compound fertilizer is composed of the following raw materials in parts by weight: 25-40 parts of ammonium chloride, 35-45 parts of urea, 12-16 parts of monoammonium phosphate, 10-15 parts of potassium chloride, 0.5-1 part of copper sulfate, 1-2 parts of zinc sulfate, 1-2 parts of magnesium chloride, 0.5-1 part of copper sulfate, 4-6 parts of attapulgite, 20-30 parts of 5-6 mol/L sulfuric acid, 10-15 parts of modified starch, 3-5 parts of polyvinyl alcohol, 4-6 parts of modified tree ash, 0.5-0.8 part of borax and 30-50 parts of water. The water-retention coated nitrogen phosphorus potassium compound fertilizer disclosed by the invention can improve the utilization rates of water and fertilizer, save water, reduce fertilizer loss, protect the agricultural environment, promote the yield increase of crops and generate good social, economic and ecological benefits.
Description
Technical field
The present invention relates to a kind of water conservation coating nitrogen-phosphorus-potassium compound fertilizer and preparation method thereof, belong to technical field of fertilizers.
Background technology
China is large agricultural country, and chemical fertilizer has consequence in agricultural, but the loss of chemical fertilizer is a problem that can not be ignored, particularly the utilization ratio of nitrogenous fertilizer is quite low, manure resources waste is serious, will cause agriculture production cost increase, the reduction of chemical fertilizer efficiency, the deterioration of the ecological environment.Development Slow or controlled release fertilizer is raising fertilizer nutrient utilization, makes full use of resource, reduces the environmental effect of chemical fertilizer, realizes the important measures of Agricultural Sustainable Development in China.But existing slowly/controlled releasing fertilizer also exists certain shortcoming, main manifestations is: cost is high, and coated fertilizer difficult degradation is manured into soil and easily causes secondary pollution.Therefore, the coated fertilizer of searching high efficiency low cost environmental protection develops coating Slow/Controlled Release Fertilizers is one of developing direction of current new-type fertilizer.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of novel water conservation coating nitrogen-phosphorus-potassium compound fertilizer is provided, to delay nutrients release, gives its water conservation and release water function.
The technical solution used in the present invention is as follows:
A kind of water conservation coating nitrogen-phosphorus-potassium compound fertilizer, it is made up of the raw material of following weight parts: ammonium chloride 25-40, urea 35-45, monoammonium phosphate 12-16, Repone K 10-15, copper sulfate 0.5-1, zinc sulfate 1-2, magnesium chloride 1-2, copper sulfate 0.5-1, attapulgite 4-6,5-6mol/L sulfuric acid 20-30, treated starch 10-15, polyvinyl alcohol 3-5, modification tree ash 4-6, borax 0.5-0.8, water 30-50.
Described treated starch is obtained by following methods: get 50-60 part starch dispersion in 80-100 part water, add 5-8 part sodium hydroxide, 1-2 part Sodium Persulfate, 40-50 part propylene oxide again, 30-40min is stirred at 15-20 DEG C, be warming up to 45-50 DEG C, reaction 8-10h, is neutralized to PH=5.0-6.0 with hydrochloric acid, filters, washing, is drying to obtain treated starch.
Described modification tree ash is obtained by following methods: after first using 10-15% hydrogen peroxide dipping tree ash 2-3h, then with deionized water wash to neutral, dries; Add 2% chitosan solution, the Xylo-Mucine of 2-3%, the Nano sepiolite powder of 3-5% that are equivalent to tree ash weight 3-4%, high speed 1500-2000r/min stirs 20-30min, and ovendry power is broken into ultrafine powder.
The preparation method of water conservation coating nitrogen-phosphorus-potassium compound fertilizer, comprises the following steps:
(1) take ammonium chloride by formulation ratio, urea, monoammonium phosphate, Repone K, copper sulfate, zinc sulfate, magnesium chloride, copper sulfate, attapulgite put into stirrer, stir 3-5min, to be mixed evenly after, by in raw material roller pelletizer, with spraying plant, sulfuric acid is evenly sprayed onto raw material surface, granulation, dries;
(2) by formulation ratio, polyethylene alcohol and water is added in reactor, stir, be heated to 90-95 DEG C, continue to stir l-2h, treat that polyvinyl alcohol dissolves completely, stop heating, continue to stir, add treated starch, borax, modification tree ash, be warmed up to 80-85 DEG C, accelerate to stir 1-2h, stop heating, continue to stir, be cooled to room temperature, obtain coating feed liquid;
(3) compound fertilizer granules of uniform particle sizes after screening is put into the rotary drum of rotation, carry out thermal pretreatment, fertilizer surface is made to reach 35-40 DEG C, with high-pressure spray-painted rifle, coating feed liquid is sprayed on fertilizer surface equably, then trunk drying installation dry 2-3h at 60-70 DEG C is placed in, obtained water conservation coating nitrogen-phosphorus-potassium compound fertilizer.
Beneficial effect of the present invention:
(1) the coated fertilizer wide material sources, the cost that adopt of the present invention low, easily degrade, pollution-free, environmental protection and public nuisance free;
(2) water conservation coating nitrogen-phosphorus-potassium compound fertilizer of the present invention can promote the materialization of the Integration of Water into Fertilizer; for liquid manure is converted into the practice that actual productivity provides new, for dry farming, water-saving agriculture increases in grain production and agriculture environmental protection provide new technical support as coupled wave theory mutually.
(3) the present invention's bright water conservation coating nitrogen-phosphorus-potassium compound fertilizer, can improve liquid manure utilising efficiency, and to water saving and reduction fertilizer loss, protecting agriculture environment, promotes crop yield, and will produce good society, economy and ecological benefits.
Embodiment
A kind of water conservation coating nitrogen-phosphorus-potassium compound fertilizer, it is made up of the raw material of following weight parts: ammonium chloride 32 parts, 40 parts, urea, monoammonium phosphate 15 parts, 12 parts, Repone K, 0.8 part, copper sulfate, 1.2 parts, zinc sulfate, 1 part, magnesium chloride, 0.6 part, copper sulfate, attapulgite 5 parts, 24 parts, 6mol/L sulfuric acid, treated starch 12 parts, polyvinyl alcohol 4 parts, modification tree ash 6 parts, borax 0.8 part, 35 parts, water.
Wherein, described treated starch is obtained by following methods: get 50 parts of starch dispersion in 80 parts of water, add 6.5 parts of sodium hydroxide, 1.5 parts of Sodium Persulfates, 45 parts of propylene oxide again, at 18 DEG C, stir 40min, be warming up to 50 DEG C, reaction 8h, PH=6.0 is neutralized to hydrochloric acid, filter, washing, is drying to obtain treated starch.
Described modification tree ash is obtained by following methods: after first using 15% hydrogen peroxide dipping tree ash 2h, then with deionized water wash to neutral, dries; Add 2% chitosan solution, the Xylo-Mucine of 2.5%, the Nano sepiolite powder of 4% that are equivalent to tree ash weight 3%, high speed 1800r/min stirs 25min, and ovendry power is broken into ultrafine powder.
The preparation method of water conservation coating nitrogen-phosphorus-potassium compound fertilizer, comprises the following steps:
(1) take ammonium chloride by formulation ratio, urea, monoammonium phosphate, Repone K, copper sulfate, zinc sulfate, magnesium chloride, copper sulfate, attapulgite put into stirrer, stir 4min, to be mixed evenly after, by in raw material roller pelletizer, with spraying plant, sulfuric acid is evenly sprayed onto raw material surface, granulation, dries;
(2) by formulation ratio, polyethylene alcohol and water is added in reactor, stir, be heated to 90 DEG C, continue to stir l.5h, treat that polyvinyl alcohol dissolves completely, stop heating, continue to stir, add treated starch, borax, modification tree ash, be warmed up to 80 DEG C, accelerate to stir 2h, stop heating, continue to stir, be cooled to room temperature, obtain coating feed liquid;
(3) compound fertilizer granules of uniform particle sizes after screening is put into the rotary drum of rotation, carry out thermal pretreatment, fertilizer surface is made to reach 35 DEG C, with high-pressure spray-painted rifle, coating feed liquid is sprayed on fertilizer surface equably, then trunk drying installation dry 2h at 70 DEG C is placed in, obtained water conservation coating nitrogen-phosphorus-potassium compound fertilizer.
The water conservation coating nitrogen-phosphorus-potassium compound fertilizer field test results that the present invention produces is as following table:
Claims (1)
1. a water conservation coating nitrogen-phosphorus-potassium compound fertilizer, it is characterized in that, it is made up of the raw material of following weight parts: ammonium chloride 25-40, urea 35-45, monoammonium phosphate 12-16, Repone K 10-15, copper sulfate 0.5-1, zinc sulfate 1-2, magnesium chloride 1-2, copper sulfate 0.5-1, attapulgite 4-6,5-6mol/L sulfuric acid 20-30, treated starch 10-15, polyvinyl alcohol 3-5, modification tree ash 4-6, borax 0.5-0.8, water 30-50; Described treated starch is obtained by following methods: get 50-60 part starch dispersion in 80-100 part water, add 5-8 part sodium hydroxide, 1-2 part Sodium Persulfate, 40-50 part propylene oxide again, 30-40min is stirred at 15-20 DEG C, be warming up to 45-50 DEG C, reaction 8-10h, is neutralized to pH=5.0-6.0 with hydrochloric acid, filters, washing, is drying to obtain treated starch; Described modification tree ash is obtained by following methods: after first using 10-15% hydrogen peroxide dipping tree ash 2-3h, then with deionized water wash to neutral, dries; Add 2% chitosan solution, the Xylo-Mucine of 2-3%, the Nano sepiolite powder of 3-5% that are equivalent to tree ash weight 3-4%, 1500-2000r/min stirs 20-30min, and ovendry power is broken into ultrafine powder;
The preparation method of described water conservation coating nitrogen-phosphorus-potassium compound fertilizer, comprises the following steps:
(1) take ammonium chloride by formulation ratio, urea, monoammonium phosphate, Repone K, copper sulfate, zinc sulfate, magnesium chloride, attapulgite put into stirrer, stir 3-5min, to be mixed evenly after, raw material is put into roller pelletizer, with spraying plant, sulfuric acid is evenly sprayed onto raw material surface, granulation, dries;
(2) by formulation ratio, polyethylene alcohol and water is added in reactor, stir, be heated to 90-95 DEG C, continue to stir l-2h, treat that polyvinyl alcohol dissolves completely, stop heating, continue to stir, add treated starch, borax, modification tree ash, be warmed up to 80-85 DEG C, accelerate to stir 1-2h, stop heating, continue to stir, be cooled to room temperature, obtain coating feed liquid;
(3) compound fertilizer granules of uniform particle sizes after screening is put into the rotary drum of rotation, carry out thermal pretreatment, fertilizer surface is made to reach 35-40 DEG C, with high-pressure spray-painted rifle, coating feed liquid is sprayed on fertilizer surface equably, then trunk drying installation dry 2-3h at 60-70 DEG C is placed in, obtained water conservation coating nitrogen-phosphorus-potassium compound fertilizer.
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| CN201310508982.0A CN103626573B (en) | 2013-10-24 | 2013-10-24 | Water-retention coated nitrogen phosphorus potassium compound fertilizer and preparation method thereof |
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| CN104058854A (en) * | 2014-06-20 | 2014-09-24 | 安徽省巨星肥业有限公司 | Compound fertilizer provided with longan shell modified coating agent |
| CN104262007B (en) * | 2014-09-29 | 2017-10-31 | 高台县旺达绿禾肥业有限责任公司 | A kind of full water-soluble nitrogenous fertilizer |
| CN105315084A (en) * | 2015-11-27 | 2016-02-10 | 安徽帝元生物科技有限公司 | Synergistic environment-friendly fertilizer aid and fertilizer |
| CN109422578A (en) * | 2017-08-24 | 2019-03-05 | 吴鹃 | It is retained coating nitrogen-phosphorus-potassium compound fertilizer and preparation method thereof |
| CN107857635A (en) * | 2017-11-12 | 2018-03-30 | 长沙秋点兵信息科技有限公司 | A kind of nitrogen-phosphorus-potassium compound fertilizer and preparation method thereof |
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| CN1247490C (en) * | 2003-04-09 | 2006-03-29 | 陈大顺 | Fertilizer coating composite, its making method and multicomponent coated granular fertilizer |
| CN1566035A (en) * | 2003-06-25 | 2005-01-19 | 中国石油化工股份有限公司 | Quick effective seedling nourishing controlled release compound fertilizer and production method thereof |
| CN101792354B (en) * | 2010-04-07 | 2013-07-10 | 中盐安徽红四方股份有限公司 | Color drought-resistance water-retention sustained-release compound fertilizer and method for producing same |
| CN102952469B (en) * | 2012-10-27 | 2013-11-13 | 蚌埠凤凰滤清器有限责任公司 | High-strength compound adhesive film for filter |
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