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Sulfur nitrate based fertilizer and preparation method thereof

A nitrosulfur-based and fertilizer technology, applied in inorganic fertilizers, ammonium salt fertilizers, fertilizer mixtures, etc., can solve the problems of ammonium nitrate and phosphorus explosion, potential safety hazards, and high energy consumption, and achieve the effects of reduced steam consumption and excellent anti-caking effect.

Inactive Publication Date: 2019-04-05
亳州司尔特生态肥业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the process of producing nitrosulfur-based fertilizers by melting high-tower granulation, due to the use of ammonium nitrate, the melting temperature is about 170°C, which not only consumes a lot of energy, but also may cause decomposition reactions during the high-temperature melting process. And cause an explosion, so that there is a serious safety hazard in the production process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of nitrosulfur-based fertilizer, its raw material comprises ammonium nitrate phosphorus, potash fertilizer, trace element, auxiliary agent, and described auxiliary agent is made up of monoammonium phosphate, ammonium sulfate, polyvinyl alcohol aqueous solution and cordierite;

[0021] The preparation method of the nitrosulfur-based fertilizer comprises the following steps: mixing ammonium nitrate and additives in a high-tower melting tank, heating and melting, entering the mixing tank through an overflow pipe, adding potassium fertilizer and trace elements and mixing evenly, It is granulated by a high-tower granulator and cooled by air in the tower to obtain nitrosulfur-based fertilizers.

Embodiment 2

[0023] A kind of nitrosulfur-based fertilizer, its raw material comprises ammonium nitrate phosphorus, potash fertilizer, trace element, auxiliary agent, and described auxiliary agent is made up of monoammonium phosphate, ammonium sulfate, polyvinyl alcohol aqueous solution and cordierite;

[0024] Wherein, the weight ratio of the ammonium nitrate, potassium fertilizer, trace elements and additives is 35:23:7:1.5.

[0025] The preparation method of the nitrosulfur-based fertilizer comprises the following steps: mixing ammonium nitrate and additives in a high-tower melting tank, heating and melting, entering the mixing tank through an overflow pipe, adding potassium fertilizer and trace elements and mixing evenly, It is granulated by a high-tower granulator and cooled by air in the tower to obtain nitrosulfur-based fertilizers.

Embodiment 3

[0027] A kind of nitrosulfur-based fertilizer, its raw material comprises ammonium nitrate phosphorus, potash fertilizer, trace element, auxiliary agent, and described auxiliary agent is made up of monoammonium phosphate, ammonium sulfate, polyvinyl alcohol aqueous solution and cordierite;

[0028] Wherein, the weight ratio of the ammonium nitrate, potassium fertilizer, trace elements and additives is 40:26:8:2;

[0029] The weight ratio of the monoammonium phosphate, ammonium sulfate, polyvinyl alcohol and cordierite is 5:2:0.2:3;

[0030] The massfraction of described polyvinyl alcohol aqueous solution is 15wt%;

[0031] The preparation method of the brominated cordierite is: mix the ammonium bromide aqueous solution with the cordierite powder, ultrasonically stir at 110W for 1.5h, filter, dry at 85°C, and roast at 470°C for 1.5h to obtain the cordierite bromide ;

[0032] The weight ratio of the cordierite powder to ammonium bromide is 1:0.4.

[0033] The preparation met...

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Abstract

The invention relates to a fertilizer, in particular to a sulfur nitrate based fertilizer which comprises phosphorus ammonium nitrate, potassium fertilizers, micro-elements and auxiliaries, wherein the auxiliaries comprise monoammonium phosphate, ammonium sulfate, polyvinyl alcohol water solution and cordierite. The invention further discloses a preparation method of the sulfur nitrate based fertilizer. The sulfur nitrate based fertilizer has high safety, high granulation rate and low energy consumption.

Description

technical field [0001] The invention relates to fertilizers, in particular to a nitrosulfur-based fertilizer and a preparation method thereof. Background technique [0002] Compared with other traditional compound fertilizers, nitrosulfur-based fertilizers have high nitrogen and potassium, reasonable formula, good solubility, rapid fertilizer efficiency, favorable absorption of phosphorus, potassium and other nutrients, high fertilizer utilization rate, and avoid or reduce the accumulation of nitrite in plants. It is a new type of compound fertilizer with high quality, high efficiency, green environmental protection and pollution-free. At present, in the process of producing nitrosulfur-based fertilizers by melting high-tower granulation, due to the use of ammonium nitrate, the melting temperature is about 170°C, which not only consumes a lot of energy, but also may cause decomposition reactions during the high-temperature melting process. And cause explosion, make this pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
CPCC05B7/00C05G3/00C05G3/20C05B17/00C05C3/00C05D1/00C05D9/00C05D9/02
Inventor 金政辉向景渺
Owner 亳州司尔特生态肥业有限公司
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