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High-concentration compound fertilizer

A compound fertilizer and high-concentration technology, applied in the field of compound fertilizer, can solve problems such as soil compaction, soil fertility decline, unreasonable acid-base concentration, etc.

Inactive Publication Date: 2013-05-08
吴金华
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem solved by the invention is to overcome the unbalanced ratio of nitrogen, phosphorus and potassium in the existing compound fertilizer, especially the unreasonable acid-base concentration, which easily causes soil compaction and soil fertility decline

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  • High-concentration compound fertilizer

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Embodiment Construction

[0027] Specific embodiment formula

[0028]

[0029] The urea-based compound fertilizer of the present invention is to use: ammonium phosphate (NH 4 ) PO 4 , urea Co (NH 2 ) 2 , ammonium bicarbonate NH 4 C0 3 , ammonium dihydrogen phosphate NH 4 h 2 P0 4 and Ammonium Chloride NH 4 CL etc. as the nitrogen source, combined with potassium chloride KCL, potassium sulfate K 2 SO 4 , Kaolin AI 2 (SiO 2 o 5 ) · (OH) 4(This is a nucleating agent) and other basic fertilizers are used as raw materials for secondary or multiple chemical reactions, and are processed to produce high-concentration nitrogen, phosphorus, and potassium multi-component compound fertilizers. The commonly used production methods are: extrusion, pellets method, slurry method, melt method, etc. Among them, the conventional agglomerate method and the slurry method are the most commonly used, and the production of urea-based compound fertilizer by the melt tower granulation method, which is a new ...

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Abstract

The invention provides a high-concentration compound fertilizer which is prepared from the following components in parts by weight, namely 35 parts of ammonium phosphate, 30 parts of ammonium hydrogen carbonate, 20 parts of calcium superphosphate, 15 parts of potassium chloride, 40 parts of potassium sulfate, 50 parts of urea, 10 parts of ammonium sulfate, 10 parts of ammonium chloride and 10 parts of kaolin (nucleating agent) through multiple chemical reactions. The high-concentration compound fertilizer has a special formula design, wherein the ratio of N to P to K reaches 40.625:23.4:21.0,the content of N and P and K reaches 85.625 percent which greatly exceeds 45 percent, and the exceeding value is 40.625 percent; and the high-concentration compound fertilizer has the characteristicsof no acidization and alkalization to soil and does not harden soil. A production process of the high-concentration compound fertilizer comprises the steps of: guniting through a high tower, granulating through a rotary hub, drying for two times and cooling for two times, wherein in processes of drying and cooling, a chemical reaction process of a composite material is further promoted and perfected.

Description

technical field [0001] The invention relates to a compound fertilizer, in particular to a high-concentration compound fertilizer. Background technique [0002] Soil is the foundation of agriculture, and fertilizer is the "grain" of crops. Fertilizer is an indispensable and important material support for the current growth of food crop production. Compound fertilizer has the advantages of high nutrient content, few auxiliary components, and good physical properties. It plays a very important role in balancing fertilization, improving fertilizer utilization rate, and promoting high and stable crop yield. According to the test results of the National Fertilizer Test Network: a reasonable combination of nitrogen, phosphorus, and potassium can increase the yield of rice by 40.8%, corn by 46.1%, wheat by 56.6%, cotton by 48.6%, rapeseed by 64.4%, and soybean by 17.9%. . Therefore, it is imperative to develop high-concentration compound fertilizer. [0003] At present, the deve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00
Inventor 吴金华
Owner 吴金华
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