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Potassium humate urea and preparation method thereof

A technology of potassium humate and humic acid, applied in the field of potassium humate urea and its preparation, can solve the problems of unbalanced supply, poor slow-release effect, uneven mixing of urine and potassium humate, etc., and achieve a good synergistic effect , Increase the granulation effect and ensure the effect of slow release

Inactive Publication Date: 2017-05-31
新疆心连心能源化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many problems in the potassium humate urea prepared by the above method: due to the inhomogeneous mixing of urine and potassium humate, the slow release effect is not good and the supply of potassium humate and urea to the formation is unbalanced; The soil provides two kinds of fertilizers: potassium humate and urea, and the potassium humate must be consumed before supplying urea to the formation

Method used

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  • Potassium humate urea and preparation method thereof
  • Potassium humate urea and preparation method thereof
  • Potassium humate urea and preparation method thereof

Examples

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preparation example Construction

[0015] A preparation method of potassium humate urea, comprising:

[0016] Prepare Potassium Humate.

[0017] The raw material of potassium humate in this scheme is liquid potassium humate. The potassium humate can be purchased directly from the market, or can be prepared by yourself, as long as the raw material index of the potassium humate meets the standards in the table below.

[0018] Table 1 Potassium humate raw material index

[0019]

[0020] Note: The indicators in Table 1 are measured by mass fraction.

[0021] The mass content of humic acid in the liquid humic acid raw material for preparing the present potassium humate urea is ≥8.2%. It can be understood that the mass content of humic acid in the liquid humic acid raw material: 8.2%≤the mass content of humic acid in the liquid humic acid raw material<100%.

[0022] Take 1.6-2 parts by weight of the liquid potassium humate raw material and divide it into 0.5-0.8 parts by weight of the first potassium humate a...

Embodiment 1

[0044] Get 0.7kg of the first potassium humate, 2kg of the first superphosphate, 1kg of the first potassium chloride and 10kg of water and mix evenly to obtain a solution. Add the solution to 10 kg of black soil and mix evenly, then perform the first granulation at a temperature of 110° C. to obtain intermediate fertilizer granules.

[0045] Under mechanical stirring conditions, heat 95kg of urea to a molten state, add 4.75kg of water, 1.2kg of the second potassium humate, 5kg of the second superphosphate and 6kg of the second potassium chloride and mix well , to get urine. Add the intermediate fertilizer granules to the urine and mix them evenly, then transport them to the evaporation system to evaporate excess water, then transport them to the prilling tower, and carry out vacuum granulation at a temperature of 130°C and under normal pressure conditions to obtain humic fertilizers. Potassium urea.

Embodiment 2

[0047] Get 0.6kg of the first potassium humate, 4kg of the first superphosphate, 2kg of the first potassium chloride and 12kg of water and mix evenly to obtain a solution. After adding the solution to 14 kg of black soil and mixing evenly, at a temperature of 130° C., perform the first granulation to obtain intermediate fertilizer granules.

[0048] Under mechanical stirring conditions, heat 98kg of urea to a molten state, add 5.88kg of water, 1.4kg of the second potassium humate, 7kg of the second superphosphate and 7kg of the second potassium chloride and mix well , to get urine. Add the intermediate fertilizer granules to the urine and mix them evenly, then transport them to the evaporation system to evaporate excess water, then transport them to the prilling tower, and carry out vacuum granulation at a temperature of 140°C and under normal pressure conditions to obtain humic fertilizers. Potassium urea.

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Abstract

The invention provides potassium humate urea and a preparation method thereof and relates to the technical field of chemical fertilizers. The method for preparing the potassium humate urea comprises the following steps: dividing 1.6-2 parts by weight of a potassium humate raw material into the first potassium humate and the second potassium humate, wherein the potassium humate raw material refers to liquid potassium humate with the humic acid mass content of more than or equal to 8.2%; mixing the first potassium humate with black soil, and performing first granulation so as to obtain intermediate fertilizer granules; mixing the intermediate fertilizer granules, the second potassium humate and 90-100 parts by weight of urea raw materials, evaporating, performing second granulation, thereby obtaining the product. The intermediate fertilizer granules are taken as a urea carrier, so that each of the prepared potassium humate urea granules is coated with the intermediate fertilizer granule prepared from potassium humate. The granulating effect of the potassium humate urea can be improved, and a sustained release effect of the potassium humate on urea can be guaranteed, so that an excellent synergistic effect is achieved between the potassium humate and urea.

Description

technical field [0001] The invention relates to the technical field of chemical fertilizers, and in particular to potassium humate urea and a preparation method thereof. Background technique [0002] Potassium humate is a urea synergist prepared by using weathered coal and lignite as the main raw materials, extracting polymer active humic acid through microbial fermentation technology, and using chelation technology. Potassium humate has a wide range of functions, especially high-activity potassium humate contains a large number of carboxyl, phenolic hydroxyl, carbonyl and other active groups, which can promote crop growth, enhance photosynthesis, and have a good inhibitory effect on soil urease activity; and urea The reaction produces humic urea, which slows down the decomposition and release rate of urea in the soil; in addition, potassium humate urea can also play a role in improving soil, fertilizing soil, replenishing and activating soil traces, etc. [0003] Existing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/08C05G3/04C05G5/00C05G3/80C05G3/90
CPCC05C9/00C05G3/80C05G3/90C05G5/12C05G5/30C05D9/00C05F11/02
Inventor 郑继亮张宝帅李新强宋先慧王迎雅胡艳飞李建峰余悦贞李小鹏
Owner 新疆心连心能源化工有限公司
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