CN1557787A - Binding agent for pelletization of organic-inorganic compound fertilizer and method for preparing the same - Google Patents
Binding agent for pelletization of organic-inorganic compound fertilizer and method for preparing the same Download PDFInfo
- Publication number
- CN1557787A CN1557787A CNA2004100006377A CN200410000637A CN1557787A CN 1557787 A CN1557787 A CN 1557787A CN A2004100006377 A CNA2004100006377 A CN A2004100006377A CN 200410000637 A CN200410000637 A CN 200410000637A CN 1557787 A CN1557787 A CN 1557787A
- Authority
- CN
- China
- Prior art keywords
- organic
- inorganic compound
- compound fertilizer
- granulation binder
- percent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The pelletizing adhesive for re-compounded organic inorganic fertilizer consists of starch 5-25 wt%, hydrogen peroxide solution 0.5-1.2 wt%, strong alkali 3-8 wt%, iron salt 0.05-0.2 wt%, borax 0.2-0.8 wt%, urea 0.11-0.4 wt% and potassium dihydrogen phosphate aqua 0.1-0.3 wt%. The production process includes the following steps: mixing starch and water to form paste and adding hydrogen peroxide solution and partial strong alkali and iron salt to react at 40-55 deg.c for 20-50 min; heating the mixed solution to 80-90 deg.c, adding rest strong alkali and iron salt, maintaining for 10-50 min and adding urea to react for 5-20 min; lowering the temperature to 40-60 min, and adding borax and potassium dihydrogen phosphate to react for 10-30 min to obtain the pelletizing adhesive. The pelletizing adhesive has low cost and good pelletizing effect and can simplify the pelletizing process.
Description
Technical Field
The invention relates to a binder and a production method thereof, in particular to an organic-inorganic compound fertilizer granulation binder and a production method thereof.
Background
The former binder for granulating organic-inorganic compound fertilizer is mainly made of inorganic ore or organic synthetic high polymer, which is added into the compound fertilizer to reduce the total nutrient content of the fertilizer. The latter is relatively high in cost, is not easy to degrade, is easy to remain in the soil environment, and has adverse effects on the growth of crops.
Starch is a carbohydrate of the polysaccharide type, with amylose accounting for about 20% and amylopectin accounting for about 80%, which can be gradually split into small molecules under the action of acid or enzyme, and the final product is D-glucose. The starch raw material is very convenient to obtain, and the degradation product is safe to the environment and cannot generate adverse effect on the growth of crops.
Starch dextrin D-grape
Summary of the invention
The invention aims to provide an organic-inorganic compound fertilizer granulation binder.
The granulation binder for the organic-inorganic compound fertilizer comprises 5-25% of starch, 0.5-1.2% of hydrogen peroxide, 3-8% of strong base, 0.05-0.2% of ferric salt, 0.2-0.8% of borax, 1-4% of urea and 0.1-0.3% of potassium dihydrogen phosphate; all concentrations are mass percent concentrations.
Preferred amounts of the above ingredients are: 10 to 20 percent of starch, 0.8 percent of hydrogen peroxide, 5 percent of strong base, 0.1 percent of iron salt, 0.5 percent of borax, 0.2 percent of urea and 0.2 percent of monopotassium phosphate.
Wherein, the strong base can be any one or any combination of sodium hydroxide, potassium hydroxide, sodium oxide, potassium oxide, sodium carbonate, potassium carbonate, calcium hydroxide, calcium oxide, ammonium hydroxide and the like; the iron salt can be any one of ferrous sulfate, ferric sulfate, ferrous chloride and ferrous chloride or any combination thereof.
In order to improve the performance, the organic-inorganic compound fertilizer granulation binder also comprises 0.005-0.02% of modifier, wherein the modifier can be tributyl phosphate, silicone oil and polyvinyl alcohol (PVA); the concentration of tributyl phosphate is preferably 0.01%.
The second purpose of the invention is to provide a method for preparing the organic-inorganic compound fertilizer granulation binder.
The method for producing the organic-inorganic compound fertilizer granulation binder provided by the invention comprises the following steps:
1) stirring starch in water to form a homogenate, then sequentially adding hydrogen peroxide, 1/4-2/3 total amount of strong base and 1/4-2/3 total amount of iron salt, and reacting for 20-50 minutes at 40-55 ℃;
2) raising the temperature of the mixed solution in the step 1) to 80-90 ℃, adding the rest ferric salt, adding the rest strong base, preserving the temperature for 10-50 minutes, adding urea, and reacting for 5-20 minutes;
3) and reducing the reaction temperature to 40-60 ℃, adding borax and potassium dihydrogen phosphate, and reacting for 10-30 minutes under the condition of heat preservation to obtain the organic-inorganic compound fertilizer granulation binder.
Wherein, the water temperature in the step 1) is preferably 40-55 ℃, and more preferably 45-50 ℃; the reaction temperature is preferably 45-50 ℃, and the reaction time is preferably 30 minutes; the strong base added is preferably 1/3 in total amount; the iron salt added is preferably 1/2 in total.
The strong base in the steps 1) and 2) can be sodium hydroxide, potassium hydroxide, sodium oxide, potassium oxide, sodium carbonate, potassium carbonate, calcium hydroxide, calcium oxide, ammonium hydroxide and the like; the iron salt can be ferrous sulfate, ferric sulfate, ferrous chloride or ferrous chloride.
Adding the rest ferric salt in the step 2), adding the rest strong base, preferably preserving the temperature for 20-30 minutes, and adding urea for reacting for 10-15 minutes; in order to eliminate the foam produced during the reaction, a modifier, such as 0.005% to 0.02% tributyl phosphate, is added before the urea is added.
In step 3), the reaction temperature is preferably lowered to 50 ℃.
As a good binder, it is necessary to have a good affinity with an adherend, and thus it is required that the binder has a large number of polar groups in its molecular structure. After the starch is oxidized, some glycosidic bonds are broken to reduce the molecular weight, and C in D-glucose2And C3The bond is also oxidatively cleaved to form carbonylFurther oxidative ring-opening to form a carboxyl group, and, at the same time, C6The above hydroxyl groups are also oxidized.
In order to improve the water solubility of the binder, a strong base is used to react with its carboxyl group to increase the hydrophilicity of the binder, and the reaction takes place as follows:
in order to increase the affinity of the binder and the organic components and increase the stability and drying performance of the binder, a proper amount of urea is added under the condition of a specific temperature to cause the hydroxyl in the binder to perform polycondensation reaction with the hydroxyl. The reactions that occur are as follows:
simultaneously by H in potassium dihydrogen phosphate2PO4 -Controlling the amount of hydroxyl groups in the binder to prevent the binder from agglomeratingForming a gel, thereby improving the stability of the binder. And the degree of oxidation reaction is adjusted by controlling the addition amount of the monopotassium phosphate.
The organic-inorganic compound fertilizer granulation binder and the organic-inorganic compound fertilizer produced by the same have the following physical and chemical properties:
1. color of the binder: tan colored viscous liquid
2. Viscosity of the binder: 30-40 seconds (rotational viscometer)
3. Binder solid content: 18 to 30 percent
4. The storage period of the binder: more than 100 days
5. Average crushing resistance of organic-inorganic compound fertilizer particles:>14N
6. Granulation and material return rate of organic-inorganic compound fertilizer: less than 10 percent
Note that: during storage, the product is not deteriorated for a long time, but should be stored in a sealed manner,otherwise, the product may be flaked or frozen.
The organic-inorganic compound fertilizer granulation binder has the characteristics of no toxicity, no harm, no pollution, easy degradation, water solubility and the like, is suitable for producing round-particle organic compound fertilizers with N, P, K effective content of more than 30% and organic matter content of more than 40%, and is also suitable for granulating high-concentration organic-inorganic compound fertilizers (N, P, K effective nutrient is more than or equal to 45%). The water-soluble organic binder can be diluted by 1-2 times before being used for pelleting, so that the use amount of the binder can be adjusted according to needs, but still depends on the maximum water content of the material allowed at the feeding end of the drying equipment.
The organic-inorganic compound fertilizer granulation binder can improve the total nutrient content of the fertilizer, so that the fertilizer reaches or exceeds the standard of the compound fertilizer; meanwhile, the nutrient elements necessary for crops are converted to be used as the components of the binder, so that the effectiveness of the nutrient elements can be increased, and the production process of the granular compound fertilizer can be simplified. The granulation binder is soluble in water and can be used in a spray mode, so that the granulation binder is suitable for granulating by a rotary drum granulator and a disc granulator, and the granulation method is simple and is suitable for industrial production. The binder has low cost, can simplify the granulation process, and has good granulation effect and low material return rate.
Detailed Description
Example 1 production of granulation Binder for organic-inorganic Compound fertilizers
The granulation binder for the organic-inorganic compound fertilizer comprises 20% of starch, 0.8% of hydrogen peroxide, 5% of sodium hydroxide, 0.1% of ferrous sulfate, 0.5% of borax, 0.2% of urea, 0.2% of monopotassium phosphate, 0.01% of tributyl phosphate and the balance of water.
The specific preparation process is as follows:
1. preparing 50 kg of sodium hydroxide into a 40% aqueous solution; 5 kilograms of borax is prepared into 20 percent aqueous solution; 2 kg of urea is prepared into 10 percent aqueous solution; 2 kg of monopotassium phosphate is prepared into 5 percent aqueous solution; 1 kg of ferrous sulfate is prepared into a 5% aqueous solution, and 0.2% concentrated sulfuric acid is added. Diluting hydrogen peroxide by 1 time for later use.
2. Slurry mixing sufficient hot water of about 45-50 ℃ is added into a reactor, 200 kg of weighed starch is poured into the reactor and stirred into uniform slurry, and the whole operation is completed within 5-7 minutes.
3. Adding 8 kg of 30% hydrogen peroxide solution slowly while stirring, adding 40% sodium hydroxide solution (about 1/3 of the total usage amount), and adding 5% ferrous sulfate solution (about 1/2 of the total usage amount). The whole operation is completed within 3-5 minutes. The reaction is carried out for 30 minutes at the temperature of 45-50 ℃.
4. Rapidly heating the mixed solution to 80-90 ℃, and adding 5% ferrous sulfate solution (1/2 of the total usage amount) while stirring to terminate the reaction; then 40% sodium hydroxide solution (2/3 based on the total amount used) is added and the mixture is kept for 20-30 minutes under stirring.
5. Under the condition of stirring, 0.1 kg of tributyl phosphate is added to eliminate foams generated in the reaction process; adding the metered 10% urea solution into a reactor, and reacting for 10-15 minutes.
6. Cooling to about 50 ℃, and adding a measured 20% borax solution; finally, a proper amount of 5% potassium dihydrogen phosphate solution is added. And (3) carrying out heat preservation reaction for 20-30 minutes, and then cooling at room temperature to obtain the organic-inorganic compound fertilizer granulation binder.
The production cost of the organic-inorganic compound fertilizer granulation binder is approximately 625 yuan/ton.
Example 2 preparation of granulation Binder for organic-inorganic Compound fertilizers
The granulation binder for the organic-inorganic compound fertilizer comprises 10% of starch, 0.8% of hydrogen peroxide, 5% of sodium hydroxide, 0.1% of ferrous sulfate, 0.5% of borax, 0.2% of urea, 0.2% of monopotassium phosphate, 0.01% of tributyl phosphate and the balance of water. The production method is the same as that of example 1.
The dosage of each component of the organic-inorganic compound fertilizer granulation binder is shown in table 2, and the production cost is approximately 365 yuan/ton.
TABLE 2 production cost of organic-inorganic compound fertilizer granulation binder
Consumption of ingredients (kg)
Starch 100
Hydrogen peroxide (30%) 8
Ferrous sulfate 1
Sodium hydroxide (30%) 50
Borax 5
Potassium dihydrogen phosphate 2
Urea 2
Tributyl phosphate 0.1
Comparative examples 1,
The results of comparing the granulation efficiency of the organic-inorganic compound fertilizer granulation binder of the present invention with that of attapulgite (available from Meihe Bierde Green Fertilizer Co., Ltd., Baoding, Hebei) are shown in Table 3.
TABLE 3 comparison of granulation benefit of the organic-inorganic compound fertilizer granulation binder of the present invention and attapulgite
| Item | The adhesive produced by the invention | Attapulgite |
| Monovalent (yuan/ton) | 625 (example 1), 365 (example 1) EXAMPLE 2) | 400 |
| Amount of Binder added during granulation (kg/ton) | 50-75 (example 1), 60-80 (example 1) EXAMPLE 2) | 100-160 |
| Compressive strength of the granules | ＞14N | ＞14N |
| Whether the method is suitable for producing the compound with the effective content of NPK more than or equal to 30 percent Mixed fertilizer | Is that | Whether or not |
| Whether the method is suitable for producing the product with the NPK effective content more than or equal to 45 percent Compound fertilizer with concentration | Is that | Whether or not |
| Smoothness of the outer shell of the particles | Is smooth and smooth | Roughness of |
| Biotoxicity | Is free of | Is free of |
| Trace elements | Controllable | Is free of |
| Adding cost (Yuan/ton) | 30-47 (example 1)22-29 (example 1) EXAMPLE 2) | 40-64 |
Claims (10)
1. The granulation binder for the organic-inorganic compound fertilizer is an aqueous solution containing the following substances in percentage by mass: 5 to 25 percent of starch, 0.5 to 1.2 percent of hydrogen peroxide, 3 to 8 percent of strong base, 0.05 to 0.2 percent of ferric salt, 0.2 to 0.8 percent of borax, 1 to 4 percent of urea and 0.1 to 0.3 percent of monopotassium phosphate.
2. Granulation binder as claimed in claim 1, characterized in that: the organic-inorganic compound fertilizer granulation binder comprises 10-20% of starch, 0.8% of hydrogen peroxide, 5% of strong base, 0.1% of iron salt, 0.5% of borax, 0.2% of urea and 0.2% of monopotassium phosphate.
3. Granulation binder according to claim 1 or 2, characterized in that: the strong base is any one or any combination of sodium hydroxide and potassium hydroxide, sodium oxide, potassium oxide, sodium carbonate, potassium carbonate, calcium hydroxide, calcium oxide and ammonium hydroxide.
4. Granulation binder according to claim 1 or 2, characterized in that: the iron salt can be any one of ferrous sulfate, ferric sulfate, ferrous chloride or any combination thereof.
5. Granulation binder according to claim 1 or 2, characterized in that: the organic-inorganic compound fertilizer granulation binder also comprises 0.005-0.02% of modifier.
6. Granulation binder as claimed in claim 5, characterized in that: the modifier is tributyl phosphate, silicone oil, polyvinyl alcohol (PVA) and the like.
7. Granulation binder as claimed in claim 6, characterized in that: the concentration of tributyl phosphate is 0.01%.
8. A method for producing the organic-inorganic compound fertilizer granulation binder of claim 1, comprising the following steps:
1) stirring starch in water to form a homogenate, then sequentially adding hydrogen peroxide, 1/4-2/3 total amount of strong base and 1/4-2/3 total amount of iron salt, and reacting for 20-50 minutes at 40-55 ℃;
2) raising the temperature of the mixed solution in the step 1) to 80-90 ℃, adding the rest ferric salt, adding the rest strong base, preserving the temperature for 10-50 minutes, adding urea, and reacting for 5-20 minutes;
3) and reducing the reaction temperature to 40-60 ℃, adding borax and potassium dihydrogen phosphate, and reacting for 10-30 minutes under the condition of heat preservation to obtain the organic-inorganic compound fertilizer granulation binder.
9. The method of claim 8, wherein: the water temperature in the step 1) is 40-55 ℃; the reaction temperature is 45-50 ℃, and the reaction time is 30 minutes; adding the rest ferric salt in the step 2), adding the rest strong base, preserving the temperature for 20-30 minutes, and adding urea for reacting for 10-15 minutes.
10. The method according to claim 8 or 9, characterized in that: the modifier is added prior to the addition of urea.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410000637 CN1245358C (en) | 2004-01-13 | 2004-01-13 | Binding agent for pelletization of organic-inorganic compound fertilizer and method for preparing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410000637 CN1245358C (en) | 2004-01-13 | 2004-01-13 | Binding agent for pelletization of organic-inorganic compound fertilizer and method for preparing the same |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101321448A Division CN100411097C (en) | 2003-07-11 | 2004-07-07 | Film forming method, device producing method, electro-optical device, and electronic device |
| CN2006101321433A Division CN100407368C (en) | 2003-07-11 | 2004-07-07 | Process for forming a film, process for manufacturing a device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1557787A true CN1557787A (en) | 2004-12-29 |
| CN1245358C CN1245358C (en) | 2006-03-15 |
Family
ID=34350443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410000637 Expired - Fee Related CN1245358C (en) | 2004-01-13 | 2004-01-13 | Binding agent for pelletization of organic-inorganic compound fertilizer and method for preparing the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1245358C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102477171A (en) * | 2010-11-26 | 2012-05-30 | 北京市农林科学院 | Modified starch binder used for granulation of organic fertilizer and preparation method thereof |
| CN102826893A (en) * | 2011-11-25 | 2012-12-19 | 中国科学院烟台海岸带研究所 | Organic-inorganic compound fertilizer binder and its preparation method |
| CN103011958A (en) * | 2012-12-13 | 2013-04-03 | 广西农垦明阳生化集团股份有限公司 | Compound fertilizer containing efficient binder and production method of composite fertilizer |
| CN104496661A (en) * | 2014-12-01 | 2015-04-08 | 山西大学 | Organic binder of stainless steel tailing compound fertilizer and preparation method |
| CN110041139A (en) * | 2019-05-30 | 2019-07-23 | 沈阳农业大学 | A kind of agent of biological bacteria sandwich tape and application method for continuous cropping soil reparation |
| CN115490556A (en) * | 2022-10-27 | 2022-12-20 | 云南云叶化肥股份有限公司 | Auxiliary additive beneficial to fertilizer disc granulation and preparation method thereof |
-
2004
- 2004-01-13 CN CN 200410000637 patent/CN1245358C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102477171A (en) * | 2010-11-26 | 2012-05-30 | 北京市农林科学院 | Modified starch binder used for granulation of organic fertilizer and preparation method thereof |
| CN102477171B (en) * | 2010-11-26 | 2013-10-09 | 北京市农林科学院 | Modified starch binder used for granulation of organic fertilizer and preparation method thereof |
| CN102826893A (en) * | 2011-11-25 | 2012-12-19 | 中国科学院烟台海岸带研究所 | Organic-inorganic compound fertilizer binder and its preparation method |
| CN103011958A (en) * | 2012-12-13 | 2013-04-03 | 广西农垦明阳生化集团股份有限公司 | Compound fertilizer containing efficient binder and production method of composite fertilizer |
| CN103011958B (en) * | 2012-12-13 | 2016-04-27 | 广西农垦明阳生化集团股份有限公司 | A kind of composite fertilizer and production method containing highly effective binder |
| CN104496661A (en) * | 2014-12-01 | 2015-04-08 | 山西大学 | Organic binder of stainless steel tailing compound fertilizer and preparation method |
| CN110041139A (en) * | 2019-05-30 | 2019-07-23 | 沈阳农业大学 | A kind of agent of biological bacteria sandwich tape and application method for continuous cropping soil reparation |
| CN115490556A (en) * | 2022-10-27 | 2022-12-20 | 云南云叶化肥股份有限公司 | Auxiliary additive beneficial to fertilizer disc granulation and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1245358C (en) | 2006-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1298680C (en) | Organic compound fertilizer pelletizing adhesive and its preparing method | |
| CN101723765B (en) | Compound water retention soil conditioner and preparation thereof | |
| CN110256144B (en) | Preparation of biodegradable polymer sustained and controlled release organic nano fertilizer containing multiple nutrient elements | |
| CN1557787A (en) | Binding agent for pelletization of organic-inorganic compound fertilizer and method for preparing the same | |
| CN115925131A (en) | Composite carbon source and production process thereof | |
| CN111170809A (en) | Graphene soil conditioner and preparation method thereof | |
| CN102250867A (en) | Poly(vinyl alcohol)-immobilized microorganism particles and preparation method thereof | |
| CN1817994A (en) | Modified rosin resin with high-boiling point alcohol lignin and its derivative and production thereof | |
| CN1432025A (en) | Hydrocolloid powder compsn. exhibiting improved dispersibility in aqueous medium and method for preparing same | |
| CN113582174A (en) | Preparation method of straw activated carbon, straw activated carbon and application | |
| CN106867990A (en) | The preparation method of immobilized β-glucosidase | |
| CN113174075B (en) | Antibacterial stretch-resistant polyvinyl alcohol plastic film and preparation method thereof | |
| CN113861244A (en) | Lignin bacteriostatic agent and preparation method and application thereof | |
| CN1020537C (en) | Granulated seeds | |
| CN111187367B (en) | Urea formaldehyde modified sodium alginate copolymer and application thereof | |
| CN1580185A (en) | Composite soil improver and its preparing method | |
| CN113620747A (en) | Preparation method of organic-inorganic composite total-nutrient microbial fertilizer | |
| CN114195600B (en) | Organic-inorganic compound fertilizer granulating binder and preparation method and application thereof | |
| CN112851976A (en) | Preparation method of cellulose-based hydrogel for dye degradation | |
| CN114478143A (en) | Natural latex coated controlled-release fertilizer and preparation method thereof | |
| CN1396199A (en) | Degradable mother particles of plastics for protecting environment | |
| Weaver et al. | Effect of some anionic starches on the stability of soil particles in water | |
| CN101250383B (en) | Method for eliminating free formaldehyde in adhesive for machining woodwork by using potassium hypermanganate | |
| CN110294646B (en) | Synergist for enhancing strength of fertilizer particles and application thereof | |
| CN113527610B (en) | Degradable polyurethane foam material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |