CN103387444A - Preparation method of humic acid sustained-release granules coated by Konjac glucomannan - Google Patents
Preparation method of humic acid sustained-release granules coated by Konjac glucomannan Download PDFInfo
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- CN103387444A CN103387444A CN201310258527XA CN201310258527A CN103387444A CN 103387444 A CN103387444 A CN 103387444A CN 201310258527X A CN201310258527X A CN 201310258527XA CN 201310258527 A CN201310258527 A CN 201310258527A CN 103387444 A CN103387444 A CN 103387444A
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Abstract
The invention discloses a preparation method of humic acid sustained-release granules coated by Konjac glucomannan. The method comprises the following steps: firstly, putting humic acid granules into a coating machine; secondly, spraying a water solution of Konjac glucomannan, with a mass concentration between 0.1 and 1.0%, into the coating machine while rotating the coating machine, evenly mixing the mixture, and heating and drying the mixture to obtain dry granules, wherein the mass ratio of the humic acid to the water solution of Konjac glucomannan is 100 to between 5 and 30; and finally, adding the dry granules into a Boron cross-linker water solution with a mass concentration between 0.1 and 10.0% for soaking and then filtering, and drying the obtained solid to obtain the humic acid sustained-release granules coated by the Konjac glucomannan. The coating provided by the invention is degradable, and thus the coating can improve rather than have bad influence on the soil properties. Besides, material of the coating can extend the period of sustained release after being cross-linked with boron compounds. Meanwhile, boron contained in the cross-linker is an essential element of boron-containing fertilizers.
Description
Technical field
The invention belongs to the agricultural fertilizer preparation field, be specifically related to a kind of konjak gum and coat the preparation method of humic acid slow-releasing granules.
Background technology
At present, the existing relevant paper of the preparation method of humic acid slow-releasing granules or slow releasing capsule and patent report.The method that the humic acid slow-releasing granules adopts is mainly that the techniques such as humic acid, polymerisable monomer (as vinylformic acid, acrylamide, methylene-bisacrylamide etc.) polymerization in the aqueous solution, drying, pulverizing are prepared, this particle has the effects such as slowly-releasing, water conservation, but the polymkeric substance by its introducing can't be degraded, and soil property is had disadvantageous effect.Humic acid slow releasing capsule (as Chinese patent 200810038416.7) is that the mixture aqueous solutions such as humic acid, glucose are mixed with sodium alginate aqueous solution, then joins in calcium chloride solution to prepare to have elastic capsule shape particle.The method environmental contamination reduction, the losses such as the volatilization of minimizing active substance, loss, decomposition; But, the formation principle of controlled release capsule dressing is that sodium alginate and calcium chloride form the alginate calcium precipitation, does not form covalently cross-linkedly, and this deenergized period that has just determined this capsule is shorter.
Summary of the invention
The object of the invention is to overcome the shortcoming of above-mentioned prior art, a kind of preparation method who is coated the humic acid slow-releasing granules by the konjak gum that the degradable dressing coats, extend deenergized period is provided.
For achieving the above object, the technical solution used in the present invention comprises the following steps:
1) at first the humic acid particle is put into seed-coating machine, spray into the konjak gum aqueous solution that mass concentration is 0.1-1.0% under the seed-coating machine rotation, mix, intensification, drying, obtain dried particles, wherein the mass ratio of humic acid particle and the konjak gum aqueous solution is 100: (5-30);
2) then dried particles is joined in the boracic cross-linking agent aqueous solution that mass concentration is 0.1%-10.0% and soak rear the filtration,, with the gained solid drying, namely obtain konjak gum and coat the humic acid slow-releasing granules.
In described step 1), humic acid adopts one or more in humic acid, sodium humate, potassium humate.
In described step 1), the granularity of humic acid is the 20-200 order.
In described step 1), the rotating speed of seed-coating machine is 20-60 rev/min.
In described step 1), konjak gum adopts white konjak gum or elephant-foot yam glue.
Described step 2) containing borate crosslinker in is borax, boric acid.
The time of soaking described step 2) is 5.0-30 minute.
Described step 1) and step 2) in be dried to water content and be less than or equal to 5.0%.
The present invention adopts konjak gum to coat the humic acid particle, and the dressing of use has degradability, does not only affect soil function, can improve soil function on the contrary; In addition, coating material can extend the slowly-releasing cycle after containing borate crosslinker crosslinked.Simultaneously, the boron that contains of linking agent is a kind of necessary element that contains boron fertilizer.
Embodiment
Embodiment 1:
1) with granularity, be at first that to put into rotating speed be that to spray into mass concentration be 0.1%% the white konjak gum aqueous solution for the seed-coating machine of 20 rev/mins to 20-200 purpose humic acid particle, mix, heat up, be dried to water content and be less than or equal to 5.0%, obtain dried particles, wherein the humic acid particle is 100: 10 with the mass ratio of the white konjak gum aqueous solution;
2) then dried particles being joined mass concentration is to soak after 5 minutes and filter in 5% borax solution, and gained solid drying to water content is less than or equal to 5.0%, namely obtains konjak gum and coats the humic acid slow-releasing granules.
Embodiment 2:
1) with granularity, be at first that to put into rotating speed be that to spray into mass concentration be 0.3% elephant-foot yam glue solution for the seed-coating machine of 40 rev/mins to 20-200 purpose sodium humate particle, mix, heat up, be dried to water content and be less than or equal to 5.0%, obtain dried particles, wherein the mass ratio of sodium humate particle and elephant-foot yam glue solution is 100: 20;
2) then dried particles being joined mass concentration is to soak after 10 minutes and filter in 8% boric acid aqueous solution, and gained solid drying to water content is less than or equal to 5.0%, namely obtains konjak gum and coats the humic acid slow-releasing granules.
Embodiment 3:
1) with granularity, be at first that to put into rotating speed be that to spray into mass concentration be 0.5% the white konjak gum aqueous solution for the seed-coating machine of 30 rev/mins to 20-200 purpose potassium humate particle, mix, heat up, be dried to water content and be less than or equal to 5.0%, obtain dried particles, wherein the potassium humate particle is 100: 5 with the mass ratio of the white konjak gum aqueous solution;
2) then dried particles being joined mass concentration is to soak after 20 minutes and filter in 1% boracic cross-linking agent aqueous solution, and gained solid drying to water content is less than or equal to 5.0%, namely obtains konjak gum and coats the humic acid slow-releasing granules.
Embodiment 4:
1) with granularity, be at first that to put into rotating speed be that to spray into mass concentration be 0.8% elephant-foot yam glue solution for the seed-coating machine of 50 rev/mins for the composite grain of 20-200 purpose sodium humate and potassium humate, mix, heat up, be dried to water content and be less than or equal to 5.0%, obtain dried particles, wherein the mass ratio of the composite grain of sodium humate and potassium humate and elephant-foot yam glue solution is 100: 15;
2) then dried particles being joined mass concentration is to soak after 15 minutes and filter in 0.1% borax solution, and gained solid drying to water content is less than or equal to 5.0%, namely obtains konjak gum and coats the humic acid slow-releasing granules.
Embodiment 5:
1) with granularity, be at first that to put into rotating speed be that to spray into mass concentration be 1.0% elephant-foot yam glue solution for the seed-coating machine of 60 rev/mins to 20-200 purpose humic acid particle, mix, heat up, be dried to water content and be less than or equal to 5.0%, obtain dried particles, wherein the mass ratio of humic acid particle and elephant-foot yam glue solution is 100: 30;
2) then dried particles is joined in the mixed aqueous solution that mass concentration is 10.0% borax and boric acid and soak after 30 minutes and filter, gained solid drying to water content is less than or equal to 5.0%, namely obtain konjak gum and coat the humic acid slow-releasing granules.
Claims (8)
1. the preparation method of a konjak gum coating humic acid slow-releasing granules, is characterized in that, comprises the following steps:
1) at first the humic acid particle is put into seed-coating machine, spray into the konjak gum aqueous solution that mass concentration is 0.1-1.0% under the seed-coating machine rotation, mix, intensification, drying, obtain dried particles, wherein the mass ratio of humic acid particle and the konjak gum aqueous solution is 100: (5-30);
2) then dried particles is joined in the boracic cross-linking agent aqueous solution that mass concentration is 0.1%-10.0% and soak rear the filtration,, with the gained solid drying, namely obtain konjak gum and coat the humic acid slow-releasing granules.
2. a kind of konjak gum according to claim 1 coats the preparation method of humic acid slow-releasing granules, it is characterized in that: in described step 1), humic acid adopts one or more in humic acid, sodium humate, potassium humate.
3. a kind of konjak gum according to claim 1 coats the preparation method of humic acid slow-releasing granules, and it is characterized in that: in described step 1), the granularity of humic acid is the 20-200 order.
4. a kind of konjak gum according to claim 1 coats the preparation method of humic acid slow-releasing granules, and it is characterized in that: in described step 1), the rotating speed of seed-coating machine is 20-60 rev/min.
5. a kind of konjak gum according to claim 1 coats the preparation method of humic acid slow-releasing granules, it is characterized in that: in described step 1), konjak gum adopts white konjak gum or elephant-foot yam glue.
6. a kind of konjak gum according to claim 1 coats the preparation method of humic acid slow-releasing granules, and it is characterized in that: containing borate crosslinker described step 2) is borax, boric acid.
7. a kind of konjak gum according to claim 1 coats the preparation method of humic acid slow-releasing granules, it is characterized in that: the time of soaking described step 2) is 5.0-30 minute.
8. a kind of konjak gum according to claim 1 coats the preparation method of humic acid slow-releasing granules, it is characterized in that: described step 1) and step 2) in be dried to water content and be less than or equal to 5.0%.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104447120A (en) * | 2014-12-08 | 2015-03-25 | 成都新朝阳作物科学有限公司 | Organic soil water-retaining agent and preparation method thereof |
| CN105152752A (en) * | 2015-08-07 | 2015-12-16 | 沃达农业科技股份有限公司 | Humic acid containing microbial ecological fertilizer as well as preparation and application methods thereof |
| CN105541477A (en) * | 2015-12-25 | 2016-05-04 | 常州大学 | Technology for preparing biological carbon-based slow release fertilizer from rice straws |
| CN106380292A (en) * | 2016-08-29 | 2017-02-08 | 贵阳开磷化肥有限公司 | Controlled-release fertilizer for vegetables and preparation method of controlled release fertilizer |
| CN106668869A (en) * | 2016-12-11 | 2017-05-17 | 戴琪 | Preparation method of film coating material |
| CN106983869A (en) * | 2017-04-20 | 2017-07-28 | 常州创索新材料科技有限公司 | A kind of preparation method of thin film coating material |
| CN108440209A (en) * | 2018-05-30 | 2018-08-24 | 安徽辉隆集团五禾生态肥业有限公司 | The composite fertilizer of the macromolecule raw material containing konjak glucomannan and preparation method |
| CN109627090A (en) * | 2019-01-04 | 2019-04-16 | 深圳市芭田生态工程股份有限公司 | Slow-release nitrogen fertilizer and preparation method thereof containing ammoniated lignin |
| CN110272316A (en) * | 2019-07-22 | 2019-09-24 | 陕西科技大学 | A kind of paper base microelement accumulation type slow-release fertilizer and preparation method thereof |
| CN111513080A (en) * | 2020-06-02 | 2020-08-11 | 太仓优活生物技术有限公司 | Production process of granular slow-release bactericide |
| CN114349571A (en) * | 2021-12-29 | 2022-04-15 | 春华秋实科技集团有限公司 | Slow-release microbial organic fertilizer and preparation method thereof |
| CN114436711A (en) * | 2022-01-14 | 2022-05-06 | 春华秋实科技集团有限公司 | Microbial organic fertilizer for preventing and treating cotton wilt and preparation method thereof |
| CN114656907A (en) * | 2022-03-17 | 2022-06-24 | 广西沃森木业科技有限公司 | Preparation method of building template adhesive |
| CN115532224A (en) * | 2022-09-20 | 2022-12-30 | 中国科学院上海高等研究院 | Vegetable gum coated active carbon for blood perfusion, preparation method and application thereof |
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| JPS5415865A (en) * | 1977-05-31 | 1979-02-06 | Shiyouichi Honma | Fertilizer |
| CN101429063A (en) * | 2008-12-02 | 2009-05-13 | 王矛 | Humic acid urea and method for producing the same |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104447120A (en) * | 2014-12-08 | 2015-03-25 | 成都新朝阳作物科学有限公司 | Organic soil water-retaining agent and preparation method thereof |
| CN104447120B (en) * | 2014-12-08 | 2017-05-17 | 成都新朝阳作物科学有限公司 | Organic soil water-retaining agent and preparation method thereof |
| CN105152752A (en) * | 2015-08-07 | 2015-12-16 | 沃达农业科技股份有限公司 | Humic acid containing microbial ecological fertilizer as well as preparation and application methods thereof |
| CN105541477A (en) * | 2015-12-25 | 2016-05-04 | 常州大学 | Technology for preparing biological carbon-based slow release fertilizer from rice straws |
| CN106380292A (en) * | 2016-08-29 | 2017-02-08 | 贵阳开磷化肥有限公司 | Controlled-release fertilizer for vegetables and preparation method of controlled release fertilizer |
| CN106668869A (en) * | 2016-12-11 | 2017-05-17 | 戴琪 | Preparation method of film coating material |
| CN106983869A (en) * | 2017-04-20 | 2017-07-28 | 常州创索新材料科技有限公司 | A kind of preparation method of thin film coating material |
| CN108440209A (en) * | 2018-05-30 | 2018-08-24 | 安徽辉隆集团五禾生态肥业有限公司 | The composite fertilizer of the macromolecule raw material containing konjak glucomannan and preparation method |
| CN109627090A (en) * | 2019-01-04 | 2019-04-16 | 深圳市芭田生态工程股份有限公司 | Slow-release nitrogen fertilizer and preparation method thereof containing ammoniated lignin |
| CN110272316A (en) * | 2019-07-22 | 2019-09-24 | 陕西科技大学 | A kind of paper base microelement accumulation type slow-release fertilizer and preparation method thereof |
| CN110272316B (en) * | 2019-07-22 | 2021-11-30 | 陕西科技大学 | Paper-based trace element aggregation type slow release fertilizer and preparation method thereof |
| CN111513080A (en) * | 2020-06-02 | 2020-08-11 | 太仓优活生物技术有限公司 | Production process of granular slow-release bactericide |
| CN114349571A (en) * | 2021-12-29 | 2022-04-15 | 春华秋实科技集团有限公司 | Slow-release microbial organic fertilizer and preparation method thereof |
| CN114436711A (en) * | 2022-01-14 | 2022-05-06 | 春华秋实科技集团有限公司 | Microbial organic fertilizer for preventing and treating cotton wilt and preparation method thereof |
| CN114656907A (en) * | 2022-03-17 | 2022-06-24 | 广西沃森木业科技有限公司 | Preparation method of building template adhesive |
| CN115532224A (en) * | 2022-09-20 | 2022-12-30 | 中国科学院上海高等研究院 | Vegetable gum coated active carbon for blood perfusion, preparation method and application thereof |
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