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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 high equipment requirements and narrow source of raw materials, and achieve the effects of low equipment requirements, short production cycle and wide source of raw materials

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 the existing vacuum preparation method of stone powder adsorption fertilizers that require high equipment and narrow sources of raw materials, the present 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, add 60 parts of slag and 10 parts of lime into a pulverizer and pulverize into a powder; add the above-prepared powder into water and let it sit and filter to obtain a filter residue; stir the filter residue with 4 parts of binder and then add it to a granulator for granulation Spray the prepared granules with 30 parts of compound fertilizer liquid and dry to obtain slag slow-release compound fertilizer.

Embodiment 2

[0015] Example 2, add 80 parts of slag and 15 parts of lime into a pulverizer and pulverize into a powder; add the above-mentioned powder into water and let it stand and filter to obtain a filter residue; stir the filter residue with 5 parts of binder and then add it to a granulator for granulation Spray the prepared granules with 40 parts of compound fertilizer liquid and dry to obtain slag slow-release compound fertilizer.

Embodiment 3

[0016] Example 3, add 70 parts of slag and 13 parts of lime into a pulverizer and pulverize it into powder; add the above-mentioned powder into water and let it stand and filter to obtain a filter residue; stir the filter residue with 5 parts of binder and add it to a granulator for granulation Spray the prepared granules with 35 parts of compound fertilizer liquid and dry to obtain 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. The slag slow-release compound fertilizer comprises the following components in parts by weight: 60-80 parts of furnace slag, 10-15 parts of lime, 4-5 parts of cement and 30-40 parts of compound fertilizer. The preparation method of the slag slow-release compound fertilizer comprises the following steps: putting 60-80 parts of furnace slag and 10-15 parts of lime into a pulverizer to be pulverized into powder; adding the prepared powder into water, and performing still standing and filtering to obtain a filter residue; stirring the filter residue with the 4-5 parts of the cement, and then adding the mixture into a granulator for granulation; spraying the prepared grains onto 30-40 parts of compound fertilizer to obtain a liquid, and drying the liquid to obtain the slag slow-release compound fertilizer. The slag slow-release compound fertilizer is simple in process, short in producing cycle, wide in raw material source, and low in requirements on equipment.

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