Extrusion granulation fertilizer taking glycerol glucoside as adhesive and preparation method of extrusion granulation fertilizer

Abstract

The invention belongs to the technical field of fertilizers, and particularly discloses an extrusion granulation fertilizer taking glycerol glucoside as an adhesive and a preparation method of the extrusion granulation fertilizer. The extrusion granulation fertilizer comprises the following components: a fertilizer raw material and glycerol glucoside, wherein the addition amount of the glycerol glucoside is 0.1-5% of that of the fertilizer raw material. The preparation method comprises the following steps: mixing the fertilizer raw materials with glycerol glucoside, adding the mixture into an extrusion granulator, and granulating to obtain the extrusion granulation fertilizer. According to the extrusion granulation fertilizer, glycerol glucoside is used as an adhesive, the strength and the forming rate of fertilizer granules can be effectively improved, the addition amount is small, the production cost can be reduced, the influence on the nutrient content of the fertilizer is reduced, and in addition, the utilization rate of the fertilizer can also be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fertilizers, in particular to an extruded granulated fertilizer containing glycerol glucoside and a preparation method thereof. Background Art

[0002] Extrusion granulation is a commonly used granulation method in fertilizer production. Its principle is to squeeze powdered or granular materials through a die under the action of extrusion force into strips. Granulation is then cut and sized to obtain granular products. Extrusion granulation offers advantages such as simple process, high yield, and good granule strength. It is widely used in the production of compound fertilizers, organic fertilizers, and biofertilizers.

[0003] Binders are essential additives in the extrusion granulation process. Their primary function is to improve the cohesiveness of the material, enabling it to form during extrusion and maintaining the integrity of the granules. Traditional binders are mostly inorganic salts (such as bentonite and diatomaceous earth) or organic polymers (such as starch and polyvinyl alcohol). Inorganic salt binders require large additions, affecting fertilizer nutrient content and soil structure. Organic polymer binders are also expensive, increasing production costs, and some products suffer from poor biodegradability.

[0004] Therefore, the development of a new, efficient and environmentally friendly adhesive is of great significance for improving the quality of extruded granulated fertilizer products and reducing production costs.

[0005] Glycerol Glucoside (GG) is a natural compound with a unique chemical structure and biological activity. Its application in agriculture has gradually attracted attention in recent years, but there is currently no research on using glycerol Glucoside as a fertilizer binder. Summary of the Invention

[0006] In view of the foregoing, it is necessary to provide an extruded fertilizer using glycerol glucoside as a binder and a method for preparing the same. The extruded granulated fertilizer of the present invention uses glycerol glucoside as a binder, which not only effectively improves the strength and molding efficiency of the fertilizer granules but also requires a small amount of addition, thereby reducing production costs and minimizing the impact on the fertilizer's nutrient content. Furthermore, it improves fertilizer utilization.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] An extruded granulated fertilizer using glycerol glucoside as a binder comprises the following components: a fertilizer raw material and glycerol glucoside, wherein the added amount of the glycerol glucoside is 0.1-5% of the fertilizer raw material.

[0009] Furthermore, the glycerol glucoside includes α-glycerol glucoside and / or β-glycerol glucoside.

[0010] Furthermore, the glycerol glucoside includes α-glycerol glucoside and β-glycerol glucoside, and the mass ratio of the α-glycerol glucoside to the β-glycerol glucoside is 1:1.

[0011] Furthermore, the added amount of the glycerol glucoside is 0.5-2% of the fertilizer raw material.

[0012] Furthermore, the fertilizer raw material is a compound fertilizer raw material, an organic fertilizer raw material or a biofertilizer raw material.

[0013] Furthermore, the compound fertilizer raw materials include nitrogen fertilizer, phosphate fertilizer and potash fertilizer.

[0014] Furthermore, the organic fertilizer raw material includes animal manure and / or straw.

[0015] Furthermore, the biofertilizer raw material includes microbial fertilizer.

[0016] The present invention also provides a method for preparing the extruded granulated fertilizer using glycerol glucoside as a binder, comprising the following steps:

[0017] (1) Weighing the fertilizer raw material and the glycerol glucoside by mass, and uniformly mixing the fertilizer raw material and the glycerol glucoside to obtain a mixed raw material;

[0018] (2) The mixed raw materials are placed in an extrusion granulator for granulation to obtain the extruded granulated fertilizer.

[0019] The present invention has the following beneficial effects:

[0020] The extruded granulated fertilizer of the present invention innovatively uses glycerol glucoside as a binder. On the one hand, the molecular structure of glycerol glucoside contains multiple hydroxyl groups, which has good hydrophilicity and adhesion, and can effectively improve the strength and molding rate of fertilizer particles. On the other hand, its added amount is only 1 / 10-1 / 5 of that of traditional binders, which can not only effectively reduce the fertilizer production cost, but also reduce the impact on the nutrient content of the fertilizer. At the same time, glycerol glucoside is a natural product, biodegradable, environmentally friendly, and will not cause soil pollution. In addition, glycerol glucoside has certain water retention and plant growth promotion effects, which can improve the utilization rate of the fertilizer. DETAILED DESCRIPTION

[0021] Glycerol Glucoside (GG) is a natural compound with a unique chemical structure and biological activity. It promotes plant growth, enhances stress resistance, and improves soil environment. The inventors of this application discovered through experiments that using it as a binder in extruded fertilizer granulation can effectively improve the strength and forming efficiency of the granules. The technical solution involves mixing glycerol Glucoside with a fertilizer raw material and then extruding and granulating it. The addition amount of glycerol Glucoside is 0.1-5%, preferably 0.5-2%. Preferably, the glycerol Glucoside can be α-glycerol Glucoside, β-glycerol Glucoside, or a mixture of the two. The fertilizer raw material can be compound fertilizer, organic fertilizer, or biofertilizer.

[0022] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below with reference to specific embodiments.

[0023] Example 1

[0024] An extruded granulated fertilizer using glycerol glucoside as a binder, and a preparation method thereof is as follows:

[0025] (1) Raw material preparation: Weigh 1000 kg of compound fertilizer raw material (nitrogen, phosphorus, and potassium content are all 15%), weigh 5 kg of α-glycerol glucoside, and mix the weighed compound fertilizer raw material and α-glycerol glucoside evenly to obtain a mixed raw material;

[0026] (2) Extrusion granulation: The mixed raw materials are placed in an extrusion granulator for granulation to obtain the granular extrusion granulated fertilizer.

[0027] Example 2

[0028] An extruded granulated fertilizer using glycerol glucoside as a binder, and a preparation method thereof is as follows:

[0029] (1) Raw material preparation: weigh 1000 kg of organic fertilizer raw material (specifically chicken manure), weigh 10 kg of α-glycerol glucoside, and mix the weighed chicken manure and β-glycerol glucoside evenly to obtain a mixed raw material;

[0030] (2) Extrusion granulation: The mixed raw materials are placed in an extrusion granulator for granulation to obtain the granular extrusion granulated fertilizer.

[0031] Example 3

[0032] An extruded granulated fertilizer using glycerol glucoside as a binder, and a preparation method thereof is as follows:

[0033] (1) Raw material preparation: weigh 1000 kg of organic fertilizer raw material (specifically, decomposed straw), weigh 20 kg of α-glycerol glucoside, and mix the weighed straw and β-glycerol glucoside evenly to obtain a mixed raw material;

[0034] (2) Extrusion granulation: The mixed raw materials are placed in an extrusion granulator for granulation to obtain the granular extrusion granulated fertilizer.

[0035] Example 4

[0036] An extruded granulated fertilizer using glycerol glucoside as a binder, and a preparation method thereof is as follows:

[0037] (1) Raw material preparation: Weigh 1000 kg of microbial agent raw material (specifically Bacillus subtilis), weigh 2 kg of a mixture of α-glycerol glucoside and β-glycerol glucoside (mass ratio 1:1), and mix the weighed microbial agent and glycerol glucoside evenly to obtain a mixed raw material;

[0038] (2) Extrusion granulation: The mixed raw materials are placed in an extrusion granulator for granulation to obtain the granular extrusion granulated fertilizer.

[0039] Example 5

[0040] An extruded granulated fertilizer using glycerol glucoside as a binder, and a preparation method thereof is as follows:

[0041] (1) Raw material preparation: weigh 1000 kg of microbial agent raw material (specifically Bacillus amyloliquefaciens), weigh 1 kg of α-glycerol glucoside, and mix the weighed chicken manure and β-glycerol glucoside evenly to obtain a mixed raw material;

[0042] (2) Extrusion granulation: The mixed raw materials are placed in an extrusion granulator for granulation to obtain the granular extrusion granulated fertilizer.

[0043] Example 6

[0044] An extruded granulated fertilizer using glycerol glucoside as a binder, and a preparation method thereof is as follows:

[0045] (1) Raw material preparation: Weigh 1000 kg of humic acid raw material, weigh 50 kg of α-glycerol glucoside, and mix the weighed chicken manure and β-glycerol glucoside evenly to obtain a mixed raw material;

[0046] (2) Extrusion granulation: The mixed raw materials are placed in an extrusion granulator for granulation to obtain the granular extrusion granulated fertilizer.

[0047] Comparative Example 1

[0048] An extruded granulated fertilizer, the preparation method of which is as follows:

[0049] (1) Raw material preparation: Weigh 1000 kg of compound fertilizer raw material (nitrogen, phosphorus, and potassium content are all 15%), weigh 30 kg of bentonite, and mix the weighed compound fertilizer raw material and bentonite evenly to obtain a mixed raw material;

[0050] (2) Extrusion granulation: The mixed raw materials are placed in an extrusion granulator for granulation to obtain the granular extrusion granulated fertilizer.

[0051] Comparative Example 2

[0052] An extruded granulated fertilizer, the preparation method of which is as follows:

[0053] (1) Raw material preparation: Weigh 1000 kg of compound fertilizer raw material (nitrogen, phosphorus, and potassium content are all 15%), weigh 50 kg of starch, and mix the weighed compound fertilizer raw material and starch evenly to obtain a mixed raw material;

[0054] (2) Extrusion granulation: The mixed raw materials are placed in an extrusion granulator for granulation to obtain the granular extrusion granulated fertilizer.

[0055] Comparative Example 3

[0056] An extruded granulated fertilizer using glycerol glucoside as a binder, and a preparation method thereof is as follows:

[0057] (1) Raw material preparation: weigh 1000 kg of microbial agent raw material (specifically Bacillus subtilis), weigh 2 kg of a mixture of α-glycerol glucoside and β-glycerol glucoside (mass ratio 2:1), and mix the weighed microbial agent and glycerol glucoside evenly to obtain a mixed raw material;

[0058] (2) Extrusion granulation: The mixed raw materials are placed in an extrusion granulator for granulation to obtain the granular extrusion granulated fertilizer.

[0059] Comparative Example 4

[0060] An extruded granulated fertilizer using glycerol glucoside as a binder, and a preparation method thereof is as follows:

[0061] (1) Raw material preparation: Weigh 1000 kg of compound fertilizer raw material (nitrogen, phosphorus, and potassium content are all 15%), weigh 55 kg of α-glycerol glucoside, and mix the weighed compound fertilizer raw material and α-glycerol glucoside evenly to obtain a mixed raw material;

[0062] (2) Extrusion granulation: The mixed raw materials are placed in an extrusion granulator for granulation to obtain the granular extrusion granulated fertilizer.

[0063] The particle strength (N), forming rate (%) and nutrient content (%) of each group of fertilizers mentioned above were tested. The results are shown in Table 1 below:

[0064] Table 1 Performance test results of each group of fertilizers

[0065] Group Particle strength / N Forming rate / % Nutrient content of fertilizer raw materials / % Nutrient content of finished fertilizer / % Example 1 27 98 Nitrogen 15% - Phosphorus 15% - Potassium 15% Nitrogen 15% - Phosphorus 15% - Potassium 15% Example 2 28 97 Organic matter ≥45% Organic matter ≥45% Example 3 28 98 Organic matter ≥45% Organic matter ≥45% Example 4 30 99 Effective viable bacteria count ≥ 200 million / g Effective viable bacteria count ≥ 200 million / g Example 5 29 97 Effective viable bacteria count ≥ 200 million / g Effective viable bacteria count ≥ 200 million / g Example 6 28 99 Organic matter ≥45% Organic matter ≥45% Comparative Example 1 18 92 Nitrogen 15% - Phosphorus 15% - Potassium 15% Nitrogen 15% - Phosphorus 15% - Potassium 15% Comparative Example 2 22 95 Organic matter ≥45% Organic matter ≥45% Comparative Example 3 26 97 Effective viable bacteria count ≥ 200 million / g Effective viable bacteria count ≥ 200 million / g Comparative Example 4 25 96 Nitrogen 15% - Phosphorus 15% - Potassium 15% Nitrogen 15% - Phosphorus 15% - Potassium 15%

[0066] As can be seen from Table 1, compared with Comparative Examples 1-4, the fertilizer products obtained in Examples 1-6 have higher granule strength and molding efficiency, and the nutrient content is not affected. This shows that the present invention can improve the granule strength and molding efficiency of fertilizers by using glycerol glucoside as a binder and controlling the addition amount to a specific level.

Claims

1. An extruded granulated fertilizer using glycerol glucoside as a binder, characterized in that: The invention comprises the following components: a fertilizer raw material and glycerol glucoside, wherein the addition amount of the glycerol glucoside is 0.1-5% of the fertilizer raw material.

2. The extruded granulated fertilizer using glycerol glucoside as a binder according to claim 1, characterized in that: The glycerol glucoside includes α-glycerol glucoside and / or β-glycerol glucoside.

3. The extruded granulated fertilizer using glycerol glucoside as a binder according to claim 2, characterized in that: The glycerol glucoside includes α-glycerol glucoside and β-glycerol glucoside, and the mass ratio of the α-glycerol glucoside to the β-glycerol glucoside is 1:

1.

4. The extruded granulated fertilizer using glycerol glucoside as a binder according to claim 1, characterized in that: The added amount of the glycerol glucoside is 0.5-2% of the fertilizer raw material.

5. An extruded granulated fertilizer using glycerol glucoside as a binder, characterized in that: The fertilizer raw material is a compound fertilizer raw material, an organic fertilizer raw material or a biological fertilizer raw material.

6. The extruded granulated fertilizer using glycerol glucoside as a binder according to claim 5, characterized in that: The compound fertilizer raw materials include nitrogen fertilizer, phosphorus fertilizer and potash fertilizer.

7. The extruded granulated fertilizer using glycerol glucoside as a binder according to claim 5, characterized in that: The organic fertilizer raw materials include animal excrement and / or straw.

8. The extruded granulated fertilizer using glycerol glucoside as a binder according to claim 5, characterized in that: The biological fertilizer raw material includes microbial fertilizer.

9. The method for preparing an extruded granulated fertilizer using glycerol glucoside as a binder according to any one of claims 1 to 8, characterized in that: The following steps are involved: (1) Weighing the fertilizer raw material and the glycerol glucoside by mass, and uniformly mixing the fertilizer raw material and the glycerol glucoside to obtain a mixed raw material; (2) The mixed raw materials are placed in an extrusion granulator for granulation to obtain the extruded granulated fertilizer.