Disintegratable round-granule sulfur magnesium fertilizer and preparation method thereof

A round particle, sulfur-magnesium technology, applied in fertilizer forms, fertilization devices, fertilizer mixtures, etc., can solve the problems of poor disintegration efficiency, low magnesium content, and low strength, and achieve fast disintegration speed, high magnesium content, and particle size. uniform effect

Inactive Publication Date: 2012-11-14
张浩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional application of magnesium fertilizers is mainly based on brucite, light-burned magnesium, and magnesium sulfate. Because brucite is rich in raw materials and low in cost, it is widely used as a raw material for supplementing magnesium elements and magnesium-containing compound fertilizers for crops. The application of powdered magnesium fertilizers Inconvenient, not easy to spread evenly, and easy to pollute the environment. With the development of national soil testing formula fertilizer, BB fertilizer is used more and more, and the demand for round granular magnesium fertilizer is becoming more and more urgent
The existing granular magnesium fertilizer technology has disadvantages such as low magnesium content, poor disintegration efficiency, low strength, poor particle roundness, and complicated production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of disintegrating round particle sulfur magnesium fertilizer, prepared according to the following raw material dosage and preparation method, the preparation process is as follows:

[0019] (1) Material mixing: Take 88Kg of 80 mesh sulfur powder; 792Kg of 60 mesh, MgO content 64% brucite powder, add the raw materials into the mixer and stir for 15-20 minutes, and mix well to get the mixed powder;

[0020] (2) Prepare binder: Dissolve 24Kg of magnesium sulfate in 96Kg water to obtain 120Kg of magnesium sulfate heptahydrate solution with a concentration of 20% as a granulation binder for subsequent use;

[0021] (3) Granulation: Put the mixed powder into the granulation disc, add the above magnesium sulfate heptahydrate solution as binder, and granulate;

[0022] (4) Screening: When more than 75% of the particles in the granulation tray have a particle size of 2-4mm, pass through a 2mm and 4mm double-layer rolling sieve, select 2-4mm for sieving and enter the next ...

Embodiment 2

[0026] A kind of disintegrating round particle sulfur magnesium fertilizer, prepared according to the following raw material dosage and preparation method, the preparation process is as follows:

[0027] (1) Material mixing: Take 80 mesh sulfur powder 72Kg, 60 mesh, MgO content 64% brucite powder 828Kg, add the raw materials into the mixer and stir for 15-20 minutes, and mix well to get the mixed powder;

[0028] (2) Preparation of binder: take 25Kg of magnesium sulfate heptahydrate and dissolve it in 75Kg water to make 100Kg solution of magnesium sulfate heptahydrate with a concentration of 25% as the granulation liquid phase for later use;

[0029] (3) Granulation: Put the mixed powder into the granulation disc, add the above magnesium sulfate solution as binder, and granulate;

[0030] (4) According to Example 1, a disintegrable granular sulfur-magnesium fertilizer was prepared.

[0031] The test results of the obtained product are: appearance and particle size: 2-4mm sphe...

Embodiment 3

[0033] A kind of disintegrating round particle sulfur magnesium fertilizer, prepared according to the following raw material dosage and preparation method, the preparation process is as follows:

[0034] (1) Material mixing: Take 80 mesh sulfur powder 47.5Kg, 60 mesh, MgO content 64% brucite powder 902.5Kg, add the raw materials into the mixer and stir for 15-20 minutes, and mix well to get the mixed powder;

[0035] (2) Preparation of binder: Dissolve 24Kg of magnesium sulfate in 56Kg of water to make 80Kg of magnesium sulfate solution as granulation binder for subsequent use;

[0036] (3) Granulation: Put the mixed powder into the granulation disc, add the above magnesium sulfate solution as binder, and granulate;

[0037] (4) According to Example 1, a disintegrable granular sulfur-magnesium fertilizer was prepared.

[0038] The test results of the obtained product are: appearance and particle size: 2-4mm spherical shape; strength ≥ 2 Kg / cm 2 , disintegration rate ≥ 95%, d...

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Abstract

The invention belongs to the field of agricultural fertilizers, and relates to a disintegratable round-granule sulfur magnesium fertilizer. Powdery brucite and sulfur powder are used as main raw materials, and a magnesium sulfate heptahydrate solution is used as a binding agent. The disintegratable round-granule sulfur magnesium fertilizer is prepared by granulating the following components in parts by mass: mixture of 90-95 parts of powdery brucite and 5-10 parts of sulfur as the dry material, and magnesium sulfate heptahydrate solution as the binding agent. After drying the round granules, the water content is less than or equal to 3%, the strength is greater than or equal to 2Kg / cm<2>, and the disintegration rate is greater than or equal to 95%. The magnesium sulfate heptahydrate solution is used as the binding agent to enhance the granulation rate; the 60-120 mesh powdery brucite and sulfur powder are mixed as the dry material; and granulation, screening, drying, cooling and packaging are carried out to prepare the spherical granules with the granular size of 2-4mm. The invention has the advantages of low cost, high magnesium content and high disintegration speed. The product is spherical granules, has the advantages of favorable disintegratability, uniform granularity and high strength, and can be conveniently mixed with other nitrogen-phosphorus-potassium fertilizers.

Description

technical field [0001] The invention belongs to the field of agricultural fertilizers, in particular to sulfur and magnesium fertilizers. Background technique [0002] Magnesium is an important nutrient element needed by plants. Magnesium mainly exists in chlorophyll, phytochemicals and pectin, and plays an important role in photosynthesis. Magnesium ions are activators of various enzymes, which promote the conversion and metabolism of sugars in the body, and promote Synthesis of fat and protein. Applying magnesium to oil crops can increase their oil content, and magnesium can also promote the absorption of silicon by crops. Sulfur powder is an acidic compound, which not only plays an important role in plant nutrition, but also plays a very active role in pharmacology. It not only supplies nutrients to plants, but also promotes growth and development. It is used on flowers, trees, and fruit trees. Bacterial antiseptic, regulating acidity and alkalinity, promoting wound hea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00C05G5/00
Inventor 张浩
Owner 张浩
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