CN101792336A - Near-neutral high-content boron fertilizer and preparation method thereof - Google Patents
Near-neutral high-content boron fertilizer and preparation method thereof Download PDFInfo
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- CN101792336A CN101792336A CN 201010114673 CN201010114673A CN101792336A CN 101792336 A CN101792336 A CN 101792336A CN 201010114673 CN201010114673 CN 201010114673 CN 201010114673 A CN201010114673 A CN 201010114673A CN 101792336 A CN101792336 A CN 101792336A
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Abstract
The invention discloses a near-neutral high-content boron fertilizer and a preparation method thereof. The boron fertilizer is prepared from the following raw materials in a mass ratio: 60 to 75 of boric acid and 25 to 40 of borax. The method for preparing the high-content boron fertilizer comprises the following steps: (1) fully mixing the boric acid and the borax; (2) heating and dehydrating the mixture at the temperature of between 400 and 450 DEG C to obtain a mixture of boric anhydride and anhydrous borax; (3) cooling the mixture of the boric anhydride and anhydrous borax under drying condition; and (4) after cooling the mixture of the boric anhydride and anhydrous borax to below 60 DEG C, crushing and sieving the mixture to obtain the near-neutral high-content boron fertilizer. The near-neutral high-content boron fertilizer has the characteristics of high content of pure boron, low consumption and high solubility. The method for preparing the high-content boron fertilizer has the advantages of simple and convenient operation and energy conservation.
Description
Technical field
The invention belongs to boron fertilizer and preparation method thereof, boron fertilizer of particularly a kind of high purity boron content and preparation method thereof.
Background technology
(by mass percentage) boron fertilizer promptly is called high-content boron fertilizer to pure boron content＞20% down together, and existing domestic and international high-content boron fertilizer is divided into two classes, and a class is to be that raw material, pure boron content are 21% strong basicity high-content boron fertilizer with the borax decahydrate; Another kind of is to be that raw material, pure boron content are 23%～23.5% weak acid high-content boron fertilizer with boric acid.The former can't further improve the pure boron content of boron fertilizer because theoretic pure boron content only is 21.48%; The latter surpasses 200 ℃ even when higher in the dehydration temperaturre of boric acid, can obtain pure in theory boron content and reach 31.05% boron trioxide, but because the physical behavior of boron trioxide is the glass bulk, can't make boron fertilizer, promptly the boron trioxide of high purity boron content can not use as boron fertilizer at all.
Summary of the invention
An object of the present invention is provides a kind of nearly neutral high-content boron fertilizer at the problems referred to above.
Another object of the present invention provides a kind of preparation method of nearly neutral high-content boron fertilizer.
Nearly neutral high-content boron fertilizer of the present invention makes boric acid by the raw material of following mass ratio: 60～75, borax: 25～40.
Preparation method of the present invention comprises the steps:
(1) with boric acid and borax thorough mixing;
(2) with said mixture at 400 ℃～450 ℃ following thermal dehydrations, obtain boron trioxide and Borax pentahydrate mixture;
(3) above-mentioned boron trioxide and Borax pentahydrate mixture are cooled off under drying conditions;
(4) pulverize, sieve after under above-mentioned boron trioxide and Borax pentahydrate mixture are cooled to 60 ℃, obtain nearly neutral high-content boron fertilizer.
In technique scheme, the time of thermal dehydration is 1 hour in the described step 2.
In technique scheme, the crushing operation in the described step 4 adopts high speed disintegrator or micronizer mill, and 100～150 purpose screen clothes are adopted in the operation of sieving.
Nearly neutral high-content boron fertilizer employing of the present invention is weakly acidic boric acid and is alkaline borax is raw material, volume-diminished after utilizing boric acid to heat, and the borax back volume characteristic of expanding rapidly of heating, in temperature-rise period, progressively will be the blocky boron trioxide parcel of glass by the borax that is cotton shape and become granular material, can not be thereby both effectively overcome boron trioxide as the shortcoming of boron fertilizer use, the pure boron content of boron fertilizer can be brought up to 26%～27.5% again, obtain nearly neutral boron trioxide of a kind of pH value and Borax pentahydrate mixture, promptly obtain a kind of pure boron content height, usage quantity is few, the near neutral high-content boron fertilizer that instantly-soluble is good.Preparation method of the present invention then has simple, energy-saving advantages.
Embodiment
Further specify the present invention below in conjunction with embodiment.
Embodiment 1: the mass ratio of raw material is 60 kilograms of boric acid, 40 kilograms of boraxs, and press following step operation:
(1) with 60 kilograms of boric acid and 40 kilograms of borax thorough mixing;
(2) said mixture is placed in the common hot air drying oven, heat down at 400 ℃～450 ℃ and dewatered in 1 hour, obtain boron trioxide and Borax pentahydrate mixture;
(3) place boron trioxide and Borax pentahydrate mixture in the common hot air drying oven to carry out naturally cooling with above-mentioned;
(4) take out after above-mentioned boron trioxide and Borax pentahydrate mixture are cooled to 40 ℃～60 ℃, adopt 3000 rev/mins high speed disintegrator or micronizer mill to pulverize, adopt 100～150 purpose screen clothes to sieve, obtain the near neutral high-content boron fertilizer of pure boron content 26%.
Embodiment 2: the mass ratio of raw material is 70 kilograms of boric acid, 30 kilograms of boraxs, and other obtains the near neutral high-content boron fertilizer of pure boron content 27% with embodiment 1.
Embodiment 3: the mass ratio of raw material is 75 kilograms of boric acid, 25 kilograms of boraxs, and other obtains the near neutral high-content boron fertilizer of pure boron content 27.5% with embodiment 1.
Nearly neutral high-content boron fertilizer of the present invention can mix with other foliage fertilizers, agricultural chemicals, sterilant, sterilant in use, to reduce the workload that artificial secondary sprays foliage fertilizer, produces and labour cost thereby reduce.
Claims (4)
1. a nearly neutral high-content boron fertilizer is characterized in that described boron fertilizer is made boric acid by the raw material of following mass ratio: 60～75, borax: 25～40.
2. the preparation method of nearly neutral high-content boron fertilizer according to claim 1 is characterized in that comprising the steps:
(1) with boric acid and borax thorough mixing;
(2) with said mixture at 400 ℃～450 ℃ following thermal dehydrations, obtain boron trioxide and Borax pentahydrate mixture;
(3) above-mentioned boron trioxide and Borax pentahydrate mixture are cooled off under drying conditions;
(4) pulverize, sieve after under above-mentioned boron trioxide and Borax pentahydrate mixture are cooled to 60 ℃, obtain nearly neutral high-content boron fertilizer.
3. as the preparation method of nearly neutral high-content boron fertilizer as described in the claim 2, the time that it is characterized in that thermal dehydration in the described step 2 is 1 hour.
4. as the preparation method of nearly neutral high-content boron fertilizer as described in the claim 2, it is characterized in that the crushing operation in the described step 4 adopts high speed disintegrator or micronizer mill, 100～150 purpose screen clothes are adopted in the operation of sieving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101146731A CN101792336B (en) | 2010-02-10 | 2010-02-10 | Near-neutral high-content boron fertilizer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101146731A CN101792336B (en) | 2010-02-10 | 2010-02-10 | Near-neutral high-content boron fertilizer and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101792336A true CN101792336A (en) | 2010-08-04 |
| CN101792336B CN101792336B (en) | 2012-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101146731A Expired - Fee Related CN101792336B (en) | 2010-02-10 | 2010-02-10 | Near-neutral high-content boron fertilizer and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1699296A (en) * | 2005-06-27 | 2005-11-23 | 安徽省农望农业科技开发有限公司 | Instant polymerized boric fertilizer and its preparing process |
| CN101050133A (en) * | 2007-03-29 | 2007-10-10 | 武汉富强科技发展有限责任公司 | Leaf surface fertilizer of polymerized neodymium borate, and preparation method |
| CN101269996A (en) * | 2008-05-08 | 2008-09-24 | 爱沃(北京)农业技术有限公司 | Water-soluble boron fertilizer and preparation method thereof |
| CN101492312A (en) * | 2009-02-19 | 2009-07-29 | 安徽省农望农业科技开发有限公司 | Particle boron fertilizer and preparation method thereof |
| CN101585719B (en) * | 2009-06-16 | 2010-12-29 | 武汉飞喜乐农业科技有限公司 | Preparation method of weak acid high-content boron fertilizer |
-
2010
- 2010-02-10 CN CN2010101146731A patent/CN101792336B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1699296A (en) * | 2005-06-27 | 2005-11-23 | 安徽省农望农业科技开发有限公司 | Instant polymerized boric fertilizer and its preparing process |
| CN101050133A (en) * | 2007-03-29 | 2007-10-10 | 武汉富强科技发展有限责任公司 | Leaf surface fertilizer of polymerized neodymium borate, and preparation method |
| CN101269996A (en) * | 2008-05-08 | 2008-09-24 | 爱沃(北京)农业技术有限公司 | Water-soluble boron fertilizer and preparation method thereof |
| CN101492312A (en) * | 2009-02-19 | 2009-07-29 | 安徽省农望农业科技开发有限公司 | Particle boron fertilizer and preparation method thereof |
| CN101585719B (en) * | 2009-06-16 | 2010-12-29 | 武汉飞喜乐农业科技有限公司 | Preparation method of weak acid high-content boron fertilizer |
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| CN101792336B (en) | 2012-08-29 |
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