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Long-term sustained-release compound fertilizer with long-term ammonium chloride produced with combined-soda process as nitrogen source, and preparation method thereof

A technology of compound fertilizer and ammonium chloride, which is applied in the direction of fertilizer mixture, application, fertilization device, etc., can solve the problems of poor market prospect, low nitrogen utilization rate, nitrogen nutrient loss, etc., achieve performance improvement and reduce production Cost, the effect of extending the fertilizer effect period

Active Publication Date: 2015-06-03
SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ammonium chloride is an ammonium nitrogen fertilizer. Ammonium chloride is unstable as a common nitrogen fertilizer. After being applied to the soil, it is easy to produce ammonia volatilization and conversion into nitrate nitrogen, which will be lost, and strong nitrification and denitrification will occur, resulting in a large amount of nitrogen. Nutrient loss, short fertilizer effect period, low nitrogen utilization rate, the market prospect is not optimistic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Prepare 1 ton of long-acting slow-release compound fertilizer, wherein in nitrogen, phosphorus, potassium fertilizer, effective content is by weight, nitrogen (N): phosphorus (P 2 o 5 ): Potassium (K 2 O) is 10:8:8.

[0024] 327kg long-acting slow-release ammonium chloride (containing N 25%), 182kg monoammonium phosphate (P 2 o 5 44%, N10%), 134kg potassium chloride (containing K 2 (60%) and auxiliary material rare earth 357kg are mixed. The materials in the above proportions are granulated by a disc granulator or a rolling bed of a drum granulator for agglomeration to obtain a long-acting slow-release compound fertilizer.

[0025] Wherein the long-acting slow-release ammonium chloride, dicyandiamide is added in the formaldehyde solution of mass percent 37%, fully dissolves in the batching device, then stores in the material storage device, utilizes quantitative device system, such as a metering pump, dicyandiamide solution Fully mixed with the ammonium chloride ...

Embodiment 2

[0027] Prepare 1 ton of long-acting slow-release compound fertilizer, wherein in nitrogen, phosphorus, potassium fertilizer, effective content is by weight, nitrogen (N): phosphorus (P 2 o 5 ): Potassium (K 2 O) is 15:12:14.

[0028] 491kg of long-acting slow-release ammonium chloride (containing N 25%), 273kg of monoammonium phosphate (P 2 o 5 44%, N10%), 233kg potassium chloride (containing K 2 (60%), auxiliary material rare earth 3kg mix. The materials in the above proportions are granulated by a disc granulator or a rolling bed of a drum granulator for agglomeration to obtain a long-acting slow-release compound fertilizer.

[0029] Among them, long-acting slow-release ammonium chloride, 3,4-dimethylpyrazole phosphate is added to water, formaldehyde with a mass percentage of 37% or an ethanol solution with a mass percentage of 95%, fully dissolved in the batching device, and then stored in the storage Material device, using a quantitative device system, such as a met...

Embodiment 3

[0031] Prepare 1 ton of long-acting slow-release compound fertilizer, wherein in nitrogen, phosphorus, potassium fertilizer, effective content is by weight, nitrogen (N): phosphorus (P 2 o 5 ): Potassium (K 2 O) is 12:12:12.

[0032] 387kg long-acting slow-release ammonium chloride (containing N 24%), 273kg monoammonium phosphate (P 2 o 5 44%, N10%), 200kg potassium chloride (contains K 2 (60%), auxiliary material rare earth 140kg mix. The materials in the above proportions are granulated by a disc granulator or a rolling bed of a drum granulator for agglomeration to obtain a long-acting slow-release compound fertilizer.

[0033] Among them, long-acting slow-release ammonium chloride, nitrogen-pyridine is added into formaldehyde, ethanol solution or water with a mass percentage of 37%, fully dissolved in the batching device, and then stored in the storage device, using a quantitative device system, such as a metering pump, nitrogen - Pyridine is fully mixed with the ammon...

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Abstract

The invention relates to a long-term sustained-release compound fertilizer, and specifically relates to a long-term sustained-release compound fertilizer with a nitrogen source of a by-product ammonium chloride which is obtained in a process for producing soda ash with a combined-soda process, and a preparation method thereof. In the compound fertilizer, the weight ratio of effective components is that nitrogen (N): phosphorus (P2O5): potassium (K2O) =10-15:8-12:8-15, and a total nutrient content is 30-42. The nitrogen is obtained by mixing ammonium chloride and an ammonium stabilizer. According to the weight, ammonium chloride: the ammonium stabilizer=1:0.001-0.1, wherein the ammonium chloride is a by-product ammonium chloride obtained in a process for producing soda ash with a combined-soda process. The long-term sustained-release compound fertilizer provided by the invention has the advantages of long-lasting effect and precise sustained-release agent target. The effectiveness of the composite fertilizer is improved, wherein nitrogen utilization rate of ammonium chloride is improved by 10-20 percentage points, and ammonium chloride utilization amount is reduced by 20-50%.

Description

technical field [0001] The invention relates to a long-acting slow-release compound fertilizer, in particular to a long-acting slow-release compound fertilizer which uses ammonium chloride, a by-product obtained in the process of producing soda ash by a combined soda method, as a nitrogen source and a preparation method thereof. Background technique [0002] Combined soda method (also known as Hou's soda method), is a complete industrial soda method proposed by the famous chemist Hou Debang in 1942 (Na 2 CO 3 )method. In 1961, my country's first combined soda workshop was built in Dalian. After improvement and development, it is still the main method of soda production industry. [0003] The principle of Hou's alkali making method is based on the principle of ion reaction, and the ion reaction will proceed in the direction of decreasing ion concentration. Soda ash (Na 2 CO 3 ), first using NaHCO 3 In the solution, the solubility in the solution is small to produce NaHC...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/08C05G3/90
Inventor 李东坡武志杰于德清
Owner SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI