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Slag slow release compound fertilizer and preparation method thereof

A compound fertilizer and compound fertilizer technology are applied in the field of slag slow-release compound fertilizer and its preparation, which can solve the problems of difficult degradation, high cost and high raw material cost, and achieve the effects of low equipment requirements, short production cycle and simple process.

Inactive Publication Date: 2014-04-16
苏州负碳谷材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the shortcomings of existing slow-release fertilizers that use acrylate as slow-release fertilizer coating, which is not easy to degrade, high cost, and high raw material cost, the invention provides a slag slow-release compound fertilizer and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1, 60 parts of blast furnace slag and 4 parts of iron tailings ore were added into a pulverizer to be pulverized into powder and magnetized in a magnetic field; the above prepared powder and 7 parts of kaolin were added to water and stirred; 30 parts of compound fertilizer granules; spray the stirred liquid onto the compound fertilizer granules, wrap the compound fertilizer granules and dry them to obtain the required slag slow-release compound fertilizer.

Embodiment 2

[0015] Example 2, 80 parts of blast furnace slag and 7 parts of iron tailings ore were added into a pulverizer to be pulverized into powder and magnetized in a magnetic field; the above prepared powder and 8 parts of kaolin were added to water and stirred; 40 parts of compound fertilizer granules; spray the stirred liquid onto the compound fertilizer granules, wrap the compound fertilizer granules and dry them to obtain the required slag slow-release compound fertilizer.

Embodiment 3

[0016] Example 3, 70 parts of blast furnace slag and 6 parts of iron tailings ore were added to a pulverizer to be pulverized into powder and magnetized in a magnetic field; the above prepared powder and 8 parts of kaolin were added to water and stirred; 35 parts of compound fertilizer granules; spray the stirred liquid onto the compound fertilizer granules, wrap the compound fertilizer granules and dry them to obtain the required slag slow-release compound fertilizer.

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PUM

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Abstract

The invention relates to a slag slow release compound fertilizer which comprises components in parts by weight as follows: 60-80 parts of blast furnace slag, 4-7 parts of iron ore tailing sand, 7-8 parts of kaoline and 30-40 parts of compound fertilizers. A preparation method of the slag slow release compound fertilizer is characterized by comprising preparing steps as follows: 60-80 parts of blast furnace slag and 4-7 parts of iron ore tailing sand are added into a pulverizer to be pulverized into powder, and the powder is magnetized in a magnetic field; the prepared powder and 7-8 parts of kaoline are added into water and stirred; 30-40 parts of compound fertilizers are pelletized; and a well stirred liquid is sprayed on compound fertilizer particles, the compound fertilizer particles are well coated and dried, and the slag slow release compound fertilizer is obtained. According to the slag slow release compound fertilizer and the preparation method, the process is simple, the production period is short, sources of raw materials are wide, and the facility request is low.

Description

technical field [0001] The invention relates to a fertilizer, in particular to a slag slow-release compound fertilizer and a preparation method thereof. Background technique [0002] At present, the known compound fertilizer is in a kind of chemical fertilizer, contains two or more fertilizers in the three elements of nitrogen, phosphorus and potassium. Compound fertilizer has the advantages of high nutrient content, less auxiliary components and good physical properties. Compound fertilizer has a long fertilizer effect and should be used as base fertilizer. It decomposes slowly. For crops that use compound fertilizer as base fertilizer during sowing, due to the law of fertilizer demand of different crops, it is necessary to supplement available nitrogen fertilizer in time when topdressing to meet the nutritional needs of crops. However, long-term field experiments and research results show that the nutrient ratio of compound fertilizers is always fixed, while the types, qu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
Inventor 孟繁茂
Owner 苏州负碳谷材料科技有限公司