CN101704693B - Liquid fertilizer and preparation method thereof - Google Patents
Liquid fertilizer and preparation method thereof Download PDFInfo
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- CN101704693B CN101704693B CN2009100899365A CN200910089936A CN101704693B CN 101704693 B CN101704693 B CN 101704693B CN 2009100899365 A CN2009100899365 A CN 2009100899365A CN 200910089936 A CN200910089936 A CN 200910089936A CN 101704693 B CN101704693 B CN 101704693B
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Abstract
The invention discloses a preparation method for a liquid fertilizer, which belongs to the field of fertilizers. The preparation method for the liquid fertilizer comprises the following steps of: adding water to a reaction kettle, introducing water vapor; controlling the temperature to between 50 and 60 DEG C; slowly adding potassium dihydrogen phosphate to the reaction kettle; mixing and stirring the potassium dihydrogen phosphate until the potassium dihydrogen phosphate is basically dissolved; slowly adding potassium hydroxide to the reaction kettle while stirring; slowly adding urea to the reaction kettle while stirring; slowly adding borax to the reaction kettle while stirring; slowly adding rare earth nitrate to the reaction kettle while stirring; and slowly adding special potassium humate to the reaction kettle while stirring and stopping stirring when uniform black brown liquid is formed. The invention also discloses a liquid fertilizer.
Description
Technical field
The present invention relates to technical field of fertilizers, particularly a kind of preparation method of liquid fertilizer and liquid fertilizer.
Background technology
Along with Agricultural Development, the production and the range of application of liquid fertilizer enlarge day by day.Liquid fertilizer is a kind of novel efficient compound fertilizer, compares with solid fertilizer, and liquid fertilizer has as fertilizer efficiency fast, can not lump, and using method is various, pollutes advantages such as few when producing, transporting and using.
Existing liquid fertilizer is numerous in variety, often is applied to the crop that some have special requirement, as is used for the potash fertilizer that tobacco is mended potassium, mainly contains vitriolate of tartar, saltpetre, potassium primary phosphate etc.
Yet in realizing process of the present invention, the contriver finds that there is following problem at least in prior art:
Existing to contain content of effective such as nitrogen in the humic acid liquid fertilizer, phosphorus, potassium generally on the low side, and be easy to generate precipitation and influence the crop absorption.
Summary of the invention
In order to improve the content of nitrogen in the liquid fertilizer, phosphorus, potassium, the embodiment of the invention provides a kind of preparation method and liquid fertilizer of liquid fertilizer.Described technical scheme is as follows:
A kind of preparation method of liquid fertilizer comprises:
Water is joined in the reactor, feed water vapor, temperature is controlled between 50-60 ℃, potassium primary phosphate is slowly added in the described reactor, mix to described potassium primary phosphate and dissolve substantially; Under agitation slowly add potassium hydroxide in the described reactor;
Under agitation slowly add urea in the described reactor;
Under agitation slowly add borax in the described reactor;
Under agitation slowly add rare earth nitrate in the described reactor;
Under agitation special potassium humate is slowly added in the described reactor, when generating the chocolate uniform liquid, stop to stir;
Wherein, the weight ratio between described water, described potassium primary phosphate, described potassium hydroxide, described urea, described borax, described rare earth nitrate and the described special potassium humate is: 700: 350-400: 100-200: 100-150: 20-50: 5-10: 50-100;
The preparation method of described special potassium humate specifically comprises:
Raw material pulverizing at least 20 orders that will contain humic acids add water and stir the sulfuric acid that adds 2 volumetric molar concentrations down, make pH value reach 3.0-3.2;
Under agitation add potassium permanganate, be warming up to 55-60 ℃;
Behind the stirring reaction at least 2 hours, add the potassium hydroxide liquid of 35% concentration, be warming up to 70-80 ℃, make pH value reach 8.5-9.5;
React after at least 0.5 hour, the reactant upper strata stillness of night is taken out, carry out drying, obtain described special potassium humate;
In the preparation method of described special potassium humate, the described weight ratio that contains between the raw material of humic acids, described potassium permanganate and the described water is: 100: 8-10: 500-600.
On the other hand, a kind of liquid fertilizer, raw material and weight ratio are in the prescription of described liquid fertilizer: the weight ratio between water, potassium primary phosphate, potassium hydroxide, urea, borax, rare earth nitrate and the special potassium humate is: 700: 350-400: 100-200: 100-150: 20-50: 5-10: 50-100;
Wherein, described special potassium humate adopts following method to make:
Raw material pulverizing at least 20 orders that will contain humic acids add water and stir the sulfuric acid that adds 2 volumetric molar concentrations down, make pH value reach 3.0-3.2;
Under agitation add potassium permanganate, be warming up to 55-60 ℃;
Behind the stirring reaction at least 2 hours, add the potassium hydroxide liquid of 35% concentration, be warming up to 70-80 ℃, make pH value reach 8.5-9.5;
React after at least 0.5 hour, the reactant upper strata stillness of night is taken out, carry out drying, obtain special potassium humate;
In the preparation method of described special potassium humate, the described weight ratio that contains between the raw material of humic acids, described potassium permanganate and the described water is: 100: 8-10: 500-600.
The beneficial effect of the technical scheme that the embodiment of the invention provides is:
Molecular weight is low, solubleness big by using, have high-dissolvability and highly active special potassium humate, make the nitrogen, phosphorus, the potassium content that utilize in every liter of the liquid fertilizer that this special potassium humate production obtains bring up to 450 grams, humic acids content reaches 40 grams, wherein potassium element content accounts for more than 55% of total active constituent content, the effective constituent nitrogen of liquid fertilizer, the content of phosphorus, especially potassium have been improved greatly, replenish nitrogen and phosphorus when can mend potassium, promote the photosynthesis of crop and the growth of root thereof for crop.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the preparation method's of a kind of liquid fertilizer of providing of the embodiment of the invention 1 a schema;
Fig. 2 is the preparation method's of a kind of special potassium humate of providing of the embodiment of the invention 1 a schema.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
Embodiment 1
Referring to Fig. 1, the embodiment of the invention provides a kind of preparation method of liquid fertilizer, and its step comprises:
101: water is joined in the reactor, feed water vapor, temperature is controlled between 50-60 ℃, potassium primary phosphate is slowly added in the reactor, mix to potassium primary phosphate and dissolve substantially.
Particularly, the weight ratio between water, potassium primary phosphate, potassium hydroxide, urea, borax, rare earth nitrate and the special potassium humate is: 700: 350-400: 100-200: 100-150: 20-50: 5-10: 50-100.
Preferably, 700 kg water are joined in the reactor, feed water vapor, temperature is controlled between 50-60 ℃, 360 kilograms of potassium primary phosphates are slowly added in the reactor, mix to potassium primary phosphate and dissolve substantially.
Wherein, reactor can be enamel reaction still or stainless steel cauldron etc., and the present invention does not do concrete qualification.
Wherein, potassium primary phosphate is industrial pure phosphoric acid potassium dihydrogen.
Need to prove,, have undissolved potassium dihydrogen phosphate crystal in the reactor because 360 kilograms of potassium primary phosphates can not all be dissolved in 700 kg water between 50-60 ℃.
102: under agitation potassium hydroxide is slowly added in the reactor.
Preferably, under agitation 140 kilograms of potassium hydroxide are slowly added in the reactor.
Wherein, potassium hydroxide is industrial pure cerium hydroxide potassium.
103: under agitation urea is slowly added in the reactor.
Preferably, under agitation 90 kilograms of urea are slowly added in the reactor.
Wherein, urea is agricultural urea, and concentration is more than 98%.
104: under agitation borax is slowly added in the reactor.
Preferably, under agitation 50 kilograms of boraxs are slowly added in the reactor.
Wherein, borax is industrial borax, and concentration is more than 95%.
105: under agitation rare earth nitrate is slowly added in the reactor.
Preferably, under agitation 5 kilograms of rare earth nitrates are slowly added in the reactor.
Wherein, rare earth nitrate is an agricultural rare-earth, and concentration is more than 38%.
106: under agitation special potassium humate is slowly added in the reactor, when generating the chocolate uniform liquid, stop to stir.
Preferably, under agitation 60 kilograms of special potassium humates are slowly added in the reactor, when generating the chocolate uniform liquid, stop to stir.
Wherein, the solubleness of special potassium humate between 50 ℃-60 ℃ is more than or equal to 20, and referring to Fig. 2, the preparation method of this potassium humate is:
201: will contain raw material pulverizing to 20 order of humic acids, and add in the reactor, and add water and stir the sulfuric acid that adds 2 volumetric molar concentrations down, and make the pH value reach 3.03.2.
Wherein, the raw material that contains humic acids is weathered coal, brown coal or carbon mud etc.; For the fineness of the raw material pulverizing that guarantees to contain humic acids, will contain raw material pulverizing at least 20 orders of humic acids.
Wherein, reactor can be enamel reaction still or stainless steel cauldron etc., and the present invention does not do concrete qualification.
202: under agitation add potassium permanganate, be warming up to 55-60 ℃.
Wherein, the weight ratio that contains between raw material, potassium permanganate and the water of humic acids is: 100: 8-10: 500-600.
203: stirring reaction added the potassium hydroxide liquid of 35% concentration after 2 hours, was warming up to 70-80 ℃, made the pH value reach 8.5-9.5.
Wherein, stirring reaction was observed by sampling after 2 hours, can find that the peculiar dark brown of humic acids occurs, and in order to guarantee sufficient reacting, should react 2 hours at least herein.
204: react after 0.5 hour, reactant transfer to settling bowl, is got the supernatant liquid drying, obtain special potassium humate.
The preparation method of the described liquid fertilizer of the embodiment of the invention, by using molecular weight low, solubleness is big, have high-dissolvability and highly active special potassium humate, make the nitrogen that utilizes in every liter of the liquid fertilizer that this special potassium humate production obtains, phosphorus, potassium content is brought up to 450 grams, humic acids content reaches 40 grams, wherein potassium element content accounts for more than 55% of total active constituent content, improved the effective constituent nitrogen of liquid fertilizer greatly, phosphorus, especially the content of potassium, replenish nitrogen and phosphorus when can mend potassium, promote the photosynthesis of crop and the growth of root thereof for crop.
Embodiment 2
The embodiment of the invention provides a kind of liquid fertilizer, and this liquid fertilizer utilizes the preparation method of embodiment 1 to obtain, and raw material that comprises in this liquid fertilizer and weight ratio are:
Weight ratio between water, potassium primary phosphate, potassium hydroxide, urea, borax, rare earth nitrate and the special potassium humate is: 700: 350-400: 100-200: 100-150: 20-50: 5-10: 50-100.
The described liquid fertilizer of the embodiment of the invention, molecular weight is low, solubleness big by using, have high-dissolvability and highly active special potassium humate, make the nitrogen, phosphorus, the potassium content that utilize in every liter of the liquid fertilizer that this special potassium humate production obtains bring up to 450 grams, humic acids content reaches 40 grams, wherein potassium element content accounts for more than 55% of total active constituent content, the effective constituent nitrogen of liquid fertilizer, the content of phosphorus, especially potassium have been improved greatly, replenish nitrogen and phosphorus when can mend potassium, promote the photosynthesis of crop and the growth of root thereof for crop.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. the preparation method of a liquid fertilizer is characterized in that, comprising:
Water is joined in the reactor, feed water vapor, temperature is controlled between 50-60 ℃, potassium primary phosphate is slowly added in the described reactor, mix to described potassium primary phosphate and dissolve substantially;
Under agitation slowly add potassium hydroxide in the described reactor;
Under agitation slowly add urea in the described reactor;
Under agitation slowly add borax in the described reactor;
Under agitation slowly add rare earth nitrate in the described reactor;
Under agitation special potassium humate is slowly added in the described reactor, when generating the chocolate uniform liquid, stop to stir;
Wherein, the weight ratio between described water, described potassium primary phosphate, described potassium hydroxide, described urea, described borax, described rare earth nitrate and the described special potassium humate is: 700: 350-400: 100-200: 100-150: 20-50: 5-10: 50-100;
The preparation method of described special potassium humate specifically comprises:
Raw material pulverizing at least 20 orders that will contain humic acids add water and stir the sulfuric acid that adds 2 volumetric molar concentrations down, make pH value reach 3.0-3.2;
Under agitation add potassium permanganate, be warming up to 55-60 ℃;
Behind the stirring reaction at least 2 hours, add the potassium hydroxide liquid of 35% concentration, be warming up to 70-80 ℃, make pH value reach 8.5-9.5;
React after at least 0.5 hour, the reactant upper strata stillness of night is taken out, carry out drying, obtain described special potassium humate;
In the preparation method of described special potassium humate, the described weight ratio that contains between the raw material of humic acids, described potassium permanganate and the described water is: 100: 8-10: 500-600.
2. a liquid fertilizer is characterized in that, raw material and weight ratio are in the described liquid fertilizer prescription:
Weight ratio between water, potassium primary phosphate, potassium hydroxide, urea, borax, rare earth nitrate and the special potassium humate is: 700: 350-400: 100-200: 100-150: 20-50: 5-10: 50-100;
Wherein, described special potassium humate adopts following method to make:
Raw material pulverizing at least 20 orders that will contain humic acids add water and stir the sulfuric acid that adds 2 volumetric molar concentrations down, make pH value reach 3.0-3.2;
Under agitation add potassium permanganate, be warming up to 55-60 ℃;
Behind the stirring reaction at least 2 hours, add the potassium hydroxide liquid of 35% concentration, be warming up to 70-80 ℃, make pH value reach 8.5-9.5;
React after at least 0.5 hour, the reactant upper strata stillness of night is taken out, carry out drying, obtain special potassium humate;
In the preparation method of described special potassium humate, the described weight ratio that contains between the raw material of humic acids, described potassium permanganate and the described water is: 100: 8-10: 500-600.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100899365A CN101704693B (en) | 2009-07-28 | 2009-07-28 | Liquid fertilizer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100899365A CN101704693B (en) | 2009-07-28 | 2009-07-28 | Liquid fertilizer and preparation method thereof |
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| Publication Number | Publication Date |
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| CN101704693A CN101704693A (en) | 2010-05-12 |
| CN101704693B true CN101704693B (en) | 2011-12-07 |
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| CN2009100899365A Expired - Fee Related CN101704693B (en) | 2009-07-28 | 2009-07-28 | Liquid fertilizer and preparation method thereof |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102320870A (en) * | 2011-09-16 | 2012-01-18 | 浙江大学 | Method for preparing humic acid liquid fertilizer by using coenzyme Q10 fermentation liquor |
| CN109180336A (en) * | 2018-10-12 | 2019-01-11 | 刘美季 | A kind of ecological liquid fertilizer and preparation method thereof using rare earth preparation |
| CN111138231A (en) * | 2019-11-19 | 2020-05-12 | 西安交大凯达新技术有限责任公司 | Humic acid-containing high-concentration liquid water-soluble fertilizer and preparation method thereof |
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Application publication date: 20100512 Assignee: Hunan heaven treasure agricultural science and Technology Co., Ltd. Assignor: Deng Zhigang Contract record no.: 2014430000134 Denomination of invention: Liquid fertilizer and preparation method thereof Granted publication date: 20111207 License type: Exclusive License Record date: 20140717 |
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