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Synergistic composite fertilizer and method for preparing same

A technology of compound fertilizer and polyaspartic acid, applied in fertilization equipment, fertilizer mixture, application, etc., can solve problems such as troubles, achieve the effect of improving quality, improving absorption and utilization rate, and improving soil structure

Inactive Publication Date: 2008-10-22
HEBEI XIETONG ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When it is used, it needs to be mixed with fertilizer, which is troublesome, and what people generally hope to use is a fertilizer that can be applied directly

Method used

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  • Synergistic composite fertilizer and method for preparing same
  • Synergistic composite fertilizer and method for preparing same
  • Synergistic composite fertilizer and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The technological process of this embodiment is as figure 1 Shown is the production process of urea-based compound fertilizer, and its equipment and process method are to utilize the existing equipment and process technology for producing urea-based compound fertilizer. The difference between this embodiment and the existing equipment is that a metering pump connected to the granulator is added before the granulator, and the aqueous solution of polyaspartic acid and citric acid is added into the granulator through the metering pump. The weight percent of polyaspartic acid in the aqueous solution of polyaspartic acid and citric acid is 30%, and the weight percent of citric acid is 15%. The flow rate of the metering pump is 100 kg / h. Polyaspartic acid and citric acid are mixed evenly with other materials in the granulator, and the materials are partially melted and cohesively granulated by using the reaction heat of sulfuric acid and ammonia and the heat and moisture pro...

Embodiment 2

[0030] The technological process of this embodiment is as figure 2Shown is the production process of nitro compound fertilizer, and its equipment and process method are to utilize the existing equipment and process of producing nitro compound fertilizer. The difference between this embodiment and the existing equipment is that a metering pump connected with the granulator is added before the granulator. Add the aqueous solution containing 80% polyaspartic acid into the granulator through the metering pump, and the flow rate is 750Kg / h; at the same time, add the zeolite powder at the flow rate of 2T / h and the humic acid at the flow rate of 1T / h to the granulator. in the granulator. The above additives and other materials are mixed evenly in the granulator, and the solid materials are bonded and granulated by using the heat and moisture provided by the concentrated ammonium nitrate solution and steam, and finally obtain a synergistic nitro compound fertilizer with a production...

Embodiment 3

[0032] The technological process of this embodiment is as image 3 Shown is the production process of sulfur-based compound fertilizer. Its equipment and process are the same as the existing equipment and process technology for producing sulfur-based compound fertilizer. Metering pump connected to pellet machine. The 20% aqueous solution containing polyaspartic acid sodium salt is added to the granulator through a metering pump, and the flow rate is 100 kg / hour; at the same time, the zeolite powder is added in proportion to the granulator, and the addition amount is 20 kg / hour. Hour. Mix the above additives with potassium bisulfate, ammonium sulfate, superphosphate, urea, and monoammonium phosphate in a granulator and make granules. Finally, 20 tons / hour of synergistic sulfur-based compound fertilizer was obtained, and its product quality met the quality standard requirements after testing.

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Abstract

The invention discloses a synergistic compound fertilizer and a preparation method thereof. The synergistic compound fertilizer of the invention is characterized in that: poly-aspartic acid or aspartate and phosphate-dissolving agents are added into common compound fertilizer, wherein, the weight percentage of the compound fertilizer, the poly-aspartic acid or the aspartate and the phosphate agents is respectively as follows: 75.0 to 99.98 percent of the compound fertilizer, 5.0 to 0.01 percent of the poly-aspartic acid or the aspartate and 20.0 to 0.01 percent of the phosphate-dissolving agent. The phosphate-dissolving agents are the combination of one or a plurality of oxalic acid, citric acid, tartaric acid, acrylic acid, zeolite powder and humic acid. The preparation method of the synergistic compound fertilizer of the invention is that the current device and technology of producing fertilizers using the granulating method are adopted to add the poly-aspartic acid or the aspartateand the phosphate-dissolving agents into a granulator after the poly-aspartic acid or the aspartate and the phosphate-dissolving agents are measured by the measuring device arranged at the front of the granulator. The synergistic compound fertilizer can greatly facilitate the full absorption of trace elements such as nitrogen, phosphorus, potassium by crops, which can comprehensively improve fertilizer utilization ratio and the quality of crops.

Description

technical field [0001] The invention relates to a synergistic compound fertilizer, in particular to a synergistic compound fertilizer produced by using ordinary compound fertilizer, polyaspartic acid or its salt, and a phosphorus solubilizing agent and a preparation method thereof. Background technique [0002] According to many years of research by scientific workers, rational and economical fertilization is one of the important measures to increase crop yield and quality, and fertilization is the material basis for high yield and high quality. However, relevant experts pointed out that in recent years, the amount of chemical fertilizers used in my country has far exceeded the international average level. Now the amount of fertilizer used—taking nitrogen fertilizer as an example—has been three times that of the United States, 1.5 times that of France, and 1.6 times that of Germany. Under certain circumstances, increasing the use of nitrogen fertilizer will reduce the quality...

Claims

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Application Information

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IPC IPC(8): C05G3/00
Inventor 张德丰李峰范占权
Owner HEBEI XIETONG ENVIRONMENTAL PROTECTION TECH CO LTD
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