A kind of powder fertilizer additive and its application

A fertilizer and powder technology, applied in the field of powder fertilizer additives, can solve problems such as easy precipitation and blockage of pipelines, and achieve the effects of avoiding agglomeration, preventing precipitation, and weakening the interaction force.

Active Publication Date: 2016-04-27
南宁汉和生物科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the defects that the powdery fertilizer contains insoluble fertilizer and is easy to precipitate in the current integrated water and fertilizer fertilization, and the powdery fertilizer is easy to absorb moisture and harden to cause pipeline blockage, the invention provides a powder fertilizer additive, which has the ability to The dispersion and suspension of fertilizers not only help dissolve insoluble fertilizer powders, prevent precipitation and agglomeration in water, but also prevent powdered fertilizers from absorbing moisture and hardening, so that powdered fertilizers can meet the requirements of drip irrigation, fertigation, and flushing fertilization. Fertilization requirements for permanent fertilizers

Method used

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  • A kind of powder fertilizer additive and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 60 parts by weight of sulfonated melamine-formaldehyde condensate, 25 parts by weight of sodium 2-naphthalene sulfonate, 20 parts by weight of sodium tannate, and 8 parts by weight of potassium humate were uniformly mixed, miniaturized, and passed through a 50-mesh sieve to obtain a fertilizer additive. Mix the auxiliary agent of the present invention with the powder fertilizer potassium feldspar evenly at a ratio of 5%, and then send it into a fine disperser for micronization and dispersion treatment. When finely pulverized, the auxiliary agent is adsorbed on the surface of the powder fertilizer, and the surface free energy is greatly reduced. , this process leads to a smaller minimum stress for breaking the powder fertilizer, and finally the auxiliary agent coats the fine powder fertilizer to form a fine and uniform fertilizer.

[0033] The powder potassium feldspar fertilizer that embodiment 1 is obtained is tested, and detection analysis result is as follows table 1:...

Embodiment 2

[0038]50 parts by weight of sulfonated melamine formaldehyde condensate, 30 parts by weight of sodium 2,2'-dinaphthylmethane-6,6'-disulfonate, 15 parts by weight of potassium tannate, and 5 parts by weight of humate, mixed , miniaturization, and passing through a 50-mesh sieve to obtain fertilizer additives. Mix the auxiliary agent of the present invention with the ammonium dihydrogen phosphate powder fertilizer evenly at a ratio of 3%, and then send it into a fine disperser for fine and dispersive treatment. When finely pulverized, the auxiliary agent is adsorbed on the surface of the powder fertilizer, and the surface free energy is greatly increased This process leads to a smaller minimum stress for powder fertilizer fracture, and finally the auxiliary agent coats the fine powder fertilizer to form a fine and uniform fertilizer.

[0039] The caking rate was tested at 95% relative humidity and 40°C. The test showed that the caking rate was 2-3% for 60 days under natural stor...

Embodiment 3

[0041] 70 parts by weight of sulfonated melamine formaldehyde condensate, 28 parts by weight of sodium dibutylnaphthalene sulfonate, 16 parts by weight of potassium tannate, and 10 parts by weight of sodium humate, mixed evenly, miniaturized, and passed through a 50-mesh sieve to obtain a fertilizer additive . Mix the auxiliary agent of the present invention with powder fertilizer calcium superphosphate at a ratio of 4% evenly, and then send it into a fine disperser for micronization and dispersion treatment. When finely pulverized, the auxiliary agent is adsorbed on the surface of the powder fertilizer, and the surface free energy is greatly reduced. , this process leads to a smaller minimum stress for breaking the powder fertilizer, and finally the auxiliary agent coats the fine powder fertilizer to form a fine and uniform fertilizer.

[0042] The dissolved superphosphate obtained in Example 3 is tested: the electrostatic repulsion between the superphosphate powder fertilize...

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Abstract

The invention provides a powder fertilizer additive, which is characterized in that it consists of the following parts by weight: 50-75 parts of sulfonated melamine formaldehyde condensate, 25-30 parts of naphthalene sulfonate, 15-20 parts of tannin, humic acid 5-10 parts of salt. The composition is a powder fertilizer additive obtained by weighing, mixing, miniaturization, and passing through a 50-mesh sieve. It is applied to powder fertilizers to promote the dissolution and dispersion of powder fertilizers in water, and can also be applied to powder fertilizers during storage. Long-term prevention of moisture absorption and compaction of fertilizers; during drip irrigation of fertilizers, it can promote the dissolution of fine particles of powder fertilizers to avoid agglomeration, wrapping, and agglomeration, which can effectively reduce viscosity and weaken the interaction between fertilizer particles. The powder fertilizer treated with additives can be directly dispersed in water, and is suitable for water-soluble irrigation fertilizer, drip irrigation fertilizer, and flushing fertilization.

Description

technical field [0001] The invention relates to fertilizer additives, in particular to an additive for powdered fertilizers and its application. Background technique [0002] Traditional fertilizers are manually spread or mechanically planted, and the fertilizer is usually required to be granular. With the development of modern agriculture and the demand for saving water and fertilizer, integrated water and fertilizer irrigation and fertilization technology has shown obvious advantages in improving fertilizer utilization rate, saving agricultural water, reducing ecological environment pollution, improving crop quality and reducing labor force. Therefore, water-soluble fertilizer or flushing fertilization suitable for drip fertigation has become a new type of environmentally friendly fertilizer suitable for efficient agriculture and sustainable agricultural development. It is easy to use, can be sprayed, flushed, and can be used in combination with drip irrigation. [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00
Inventor 陈庆曾军堂
Owner 南宁汉和生物科技股份有限公司
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