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Slow release BB (bulk blending) fertilizer and preparation method thereof

A slow-release, compound fertilizer technology, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve the problems of environmental pollution, low fertilizer utilization rate, etc., and achieve the effect of simple production process, good application effect, and reduction of urea loss.

Active Publication Date: 2013-08-21
嘉施利(应城)化肥有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a kind of slow-release BB fertilizer and its preparation method in view of the low utilization rate of the above-mentioned fertilizer in the prior art and its preparation method. The preparation process is simple, the cost is low, and it can be used as a base fertilizer Once applied, there is no need to topdress in the future, the utilization rate of nitrogen fertilizer is high, and the environmental pollution is relatively reduced

Method used

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  • Slow release BB (bulk blending) fertilizer and preparation method thereof
  • Slow release BB (bulk blending) fertilizer and preparation method thereof
  • Slow release BB (bulk blending) fertilizer and preparation method thereof

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preparation example Construction

[0049] See figure 1 , The preparation method of the slow-release BB fertilizer provided by the preferred embodiment of the present invention includes the following steps:

[0050] Step S10: preparing coated urea.

[0051] Preferably, the following components are included in the coated urea by mass percentage:

[0052] Urea 95%~97%

[0053] Coating material 1%~4%

[0054] Adhesive 0.01%~3%.

[0055] The preparation of coated urea mainly includes the following steps:

[0056] According to mass percentage, accurately weigh 95%-97% urea, 1%-4% coating material, and 0.01%-3% adhesive for use. The coating material is 800 mesh silica powder, and the adhesive is one of phenolic emulsion or polyacrylic alcohol.

[0057] Put the accurately weighed 95%-97% urea and 0.01%-3% adhesive into the drum mixer for pretreatment. The pretreatment time is 15~45min; then add the weighed 1% to 3% of the coating material, continue to stir and mix for coating treatment, and the coating treatment time is 1 to 2 h...

Embodiment 1

[0070] First prepare coated urea by the following method:

[0071] Pass the silica through an 800 mesh sieve, and weigh 95% urea, 2% 800 mesh silica, and 3% polyacryl alcohol for use; then put 95% urea and 3% polyacryl alcohol together Put into the drum mixer for 15 minutes of pretreatment, then put 2% 800 mesh silica into the mixer and continue to stir and mix for coating treatment, the end of 1 hour; finally put the coated urea into the circle The coated urea is obtained by granulating on a pan granulator, followed by drying and cooling. Among them, the drying time is 20 minutes, and the drying temperature is 70°C.

[0072] Prepare nitrochloro-based compound fertilizer, weigh 9% ammonium nitrate phosphorus, 11% 55% nitric acid, 5% gas ammonia, 12% monoammonium phosphate, 27% ammonium chloride, 23% potassium chloride according to mass percentage And 3% calcium oxide, and mix it to obtain nitrochloro-based compound fertilizer.

[0073] Weigh 25% of coated urea and 75% of nitrochlo...

Embodiment 2

[0075] First prepare coated urea by the following method:

[0076] Pass the silica through an 800 mesh sieve, and weigh 97% urea, 1% 800 mesh silica, and 2% polyacryl alcohol for use; then put 97% urea and 2% polyacryl alcohol together Put it into the drum mixer for 45min pretreatment, then put 1% 800 mesh silica into the mixer and continue to stir and mix for coating treatment, and the end of 2 hours; finally put the coated urea into the circle The coated urea is obtained by granulating on a pan granulator, followed by drying and cooling. Among them, the drying time is 40 minutes, and the drying temperature is 50°C.

[0077] Prepare nitrochloride-based compound fertilizer, and weigh 13% ammonium nitrate phosphorus, 6% nitric acid with a concentration of 55%, 1% ammonia, 16% monoammonium phosphate, 31% ammonium chloride, 27% potassium chloride according to mass percentage And 6% calcium oxide, and mix it to obtain nitrochloride-based compound fertilizer.

[0078] Weigh 50% of the ...

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Abstract

The invention relates to a slow release BB (bulk blending) fertilizer and a preparation method thereof. The slow release BB fertilizer comprises 25-50 mass percent of coated urea and 50-75 mass percent of a chlorine nitrate based compound fertilizer. The slow release BB fertilizer and the preparation method thereof have the following beneficial effects: (1) the application effect is good: the slow release BB fertilizer can be prepared by blending in an appropriate ratio according to growth needs of crops, is suitable for various crops and can be applied once as a base fertilizer, and an additional fertilizer is not needed afterwards, so that labor and time are saved; (2) the utilization ratio of urea is high: the loss of urea can be reduced to ensure that ammonia generated by the decomposition of urea is maintained in soil for a long time, the fertilizer requirement in the whole growth and development process of the crops is met, the earlier stage does not have excessive fertilizer, the middle stage is not lack of fertilizer, and the later stage does not lose fertilizer, so that the loss of a nitrogen fertilizer is significantly controlled, and the environmental pollution is reduced; and (3) the production process is extremely simple to favor the popularization and application of the slow release BB fertilizer and the preparation method in the chemical fertilizer industry.

Description

Technical field [0001] The invention relates to the technical field of chemical fertilizers, and more specifically to a slow-release BB fertilizer (BB fertilizer means Bulk Blending Fertilizer) and a preparation method thereof. Background technique [0002] Chemical fertilizers are widely used in agricultural production. Chemical fertilizers are easily soluble in water, can produce effects after fertilization, and can be absorbed by crops in a short time. Therefore, various fertilizers, such as nitrogen fertilizer, potash fertilizer, phosphate fertilizer, ammonium fertilizer, etc., need to be applied at various stages of crop growth. These fertilizers with different functions cannot be applied in advance at one time, which increases the workload of farmers. In addition, the amount of fertilization should be appropriate, not more than that, otherwise it will be harmful to crop growth. [0003] Most of the fertilizers in our country are quick-acting fertilizers, and the utilization ...

Claims

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Application Information

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IPC IPC(8): C05G3/08C05G3/90
Inventor 宋睿柏万文蒋天举
Owner 嘉施利(应城)化肥有限公司
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