Preparation method of urea melt absorption synchronous compound fertilizer

A fertilizer and potash fertilizer technology, which is applied in the field of preparation of urine melting, absorption and release synchronous compound mixed fertilizer, can solve the problems of low utilization rate of ordinary compound mixed fertilizer, low utilization rate of fertilizer in the current season, and large loss, so as to protect water, soil and atmospheric environment , low application cost, and the effect of reducing nitrogen loss

Inactive Publication Date: 2011-08-31
安徽省天享肥业有限责任公司
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AI Technical Summary

Problems solved by technology

Ordinary compound fertilizers have a low utilization rate and a large loss, while slow / controlled release fertilizers focus on controlling nutrient slow / release, and the nutrient supply in the early and mid-term growth of crops is not enough, resulting in low utilization rate of fertilizers in the current season, and there will also be loss

Method used

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  • Preparation method of urea melt absorption synchronous compound fertilizer
  • Preparation method of urea melt absorption synchronous compound fertilizer

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Embodiment Construction

[0021] Below in conjunction with example and accompanying drawing, invention process is described,

[0022] The manufacturing method of urine melting, absorption and release synchronous compound fertilizer, the specific process operation steps are as follows:

[0023] (1) Pour the formaldehyde urea into the material receiving port, lift it to the hopper through the bucket elevator, and then transport it to the formaldehyde urea melter. The molten urea liquid flows to the buffer tank, is measured by a flow meter, and is sprayed to the preheating machine by a high-pressure spray gun. On the material crushed in the drum granulator, the formaldehyde urea is 50 parts by weight.

[0024] (2) Quick-acting nitrogen fertilizer, quick-acting phosphate fertilizer, quick-acting potash fertilizer and solid control agent-bentonite and polyaluminum chloride are measured separately, and the bucket is lifted to the stirring plate and transported to the pulverizer, and then transported to the d...

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Abstract

The invention provides a preparation method of a urea melt absorption synchronous compound fertilizer. The preparation method comprises the following steps: melting long-acting urea, metering with a meter, using a high pressure sprayer to spray the molten urea solution on quick-acting nitrogen fertilizer, quick-acting phosphate fertilizer, quick-acting potassic fertilizer and solid control agent which are preheated and ground by a drum granulator to perform liquid-phase drum granulation, drying, cooling and screening to obtain a semi-finished product; and then fully mixing the semi-finished product with the cooled and granulated long-acting phosphate fertilizer and long-acting potassic fertilizer to prepare the compound fertilizer. By adopting the compound fertilizer, the nutrient releaserate is basically synchronous to the nutrient absorption rate of each stage of the whole growing process of crops, the utilization rate is 60%-75%, more than 90% of nutrients which are not absorbed cannot be prevent from being lost, the soil environment can be protected and the biochemical characters of soil can be protected; and the compound fertilizer has the function of preserving nutrient andwater. The technology of the invention is easy to improve and convenient to operate.

Description

technical field [0001] The invention relates to a preparation method of urine melting, absorption and release synchronous compound mixed fertilizer, which belongs to the technical field of fertilizers. Background technique [0002] At present, the compound fertilizers produced in China are mainly ordinary compound fertilizers or slow / controlled release fertilizers. Ordinary compound fertilizers have a low utilization rate and a large loss, while slow / controlled release fertilizers focus on controlling the slow / release of nutrients. The nutrients in the early and mid-term growth of crops cannot be supplied, resulting in low utilization rates of fertilizers in the current season, and there will also be loss. The absorption-release synchronous compound fertilizer is scientifically produced according to the soil test formula and the nutrient requirements of different crops, and can meet the nutrient needs of each stage of the whole process of crop growth, achieve intelligent sup...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
Inventor 郭康泽
Owner 安徽省天享肥业有限责任公司
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