Composite fertilizer based on coal gangue modification and preparation method thereof

A technology of compound fertilizer and coal gangue, which is applied in the direction of urea compound fertilizer, alkaline orthophosphate fertilizer, organic fertilizer, etc., can solve the problems of poor effect and difficult release of nutrients, achieve high use value, improve fruit growth, The effect of improving fertilizer efficiency

Inactive Publication Date: 2018-09-14
HEFEI SHENWO HORTICULTURE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent literature (publication number: CN103664377B) discloses a method for preparing organic fertilizers. After crushing and sterilizing straw, coal gangue, secondary powder, and rice husk powder, add urea, superphosphate, and glycerol, stir well, and then add water. Enter the fermenter to ferment with mixed strain powder; mix with auxiliary materials and granulate to obtain organic fertilizer. The coal gangue used in this fertilizer is untreated, and the nutrients are not easy to release, so the effect is not good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of compound fertilizer based on coal gangue modification of the present embodiment, comprises the raw material of following weight portion:

[0031] 36 parts of modified coal gangue, 26 parts of industrial waste residue, 16 parts of silicon calcium powder, 14 parts of biochar, 8 parts of plant ash, 4 parts of urea, 3 parts of sodium tripolyphosphate, 1 part of marine mussel mussel protein, silicon calcium magnesium potassium fertilizer 2 parts, 2 parts of sweet potato dregs, 1 part of citric acid, 1 part of nitrogen-fixing bacteria.

[0032] The modified coal gangue in this example is prepared by calcining coal gangue at a temperature of 650°C for 25 minutes, then cooling it to room temperature, and then sending it into a ball mill for ball milling until the particle size is 32 mesh, and then adding ferric chloride and dilute sulfuric acid in sequence for Treat for 8 minutes, then wash with ethanol until the solution is neutral, then add sodium lauryl sulfate and...

Embodiment 2

[0042] A kind of compound fertilizer based on coal gangue modification of the present embodiment, comprises the raw material of following weight portion:

[0043] 42 parts of modified coal gangue, 32 parts of industrial waste residue, 20 parts of silicon calcium powder, 18 parts of biochar, 14 parts of plant ash, 6 parts of urea, 5 parts of sodium tripolyphosphate, 3 parts of marine mussel mussel protein, silicon calcium magnesium potassium fertilizer 5 parts, 4 parts of sweet potato dregs, 3 parts of citric acid, 3 parts of nitrogen-fixing bacteria.

[0044]The modified coal gangue in this example is prepared by calcining coal gangue at a temperature of 750°C for 35 minutes, then cooling to room temperature, and then sending it into a ball mill for ball milling until the particle size is 36 mesh, and then adding ferric chloride and dilute sulfuric acid in sequence for Treat for 12 minutes, then wash with ethanol until the solution is neutral, then add sodium lauryl sulfate an...

Embodiment 3

[0054] A kind of compound fertilizer based on coal gangue modification of the present embodiment, comprises the raw material of following weight portion:

[0055] 39 parts of modified coal gangue, 29 parts of industrial waste residue, 18 parts of silicon calcium powder, 16 parts of biochar, 11 parts of plant ash, 5 parts of urea, 4 parts of sodium tripolyphosphate, 2 parts of marine mussel mussel protein, silicon calcium magnesium potassium fertilizer 3.5 parts, 3 parts of sweet potato residue, 2 parts of citric acid, 2 parts of nitrogen-fixing bacteria.

[0056] The modified coal gangue in this example is prepared by calcining the gangue at a temperature of 700°C for 30 minutes, then cooling it to room temperature, and then sending it into a ball mill for ball milling until the particle size is 34 mesh, and then adding ferric chloride and dilute sulfuric acid in sequence for Treat for 10 minutes, then wash with ethanol until the solution is neutral, then add sodium lauryl sul...

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PUM

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Abstract

The invention discloses a composite fertilizer based on coal gangue modification. The composite fertilizer comprises, by weight, 36-42 parts of modified coal gangue, 26-32 parts of industrial waste residues, 16-20 parts of silicon calcium powder, 14-18 parts of biochar, 8-14 parts of plant ash, 4-6 parts of urea, 3-5 parts of sodium tripolyphosphate, 1-3 parts of marine mussel mucin, 2-5 parts ofsilicon-calcium-magnesium-potassium fertilizer, 2-4 parts of sweet potato residues, 1-3 parts of citric acid and 1-3 parts of nitrogen-fixing bacteria. The provided composite fertilizer based on coalgangue modification adopts the composite fertilizer prepared after coal gangue modification, so that not only is resource reuse achieved, but also rich nutrients are provided for plant growth, and thecomposite fertilizer has a high use value and a good application prospect.

Description

technical field [0001] The invention relates to the field of fertilizers, in particular to a compound fertilizer modified based on coal gangue and a preparation method thereof. Background technique [0002] Fertilizer refers to a class of substances that provide one or more essential nutrient elements for plants, improve soil properties, and increase soil fertility. Coal gangue is a solid waste discharged during the coal mining process and coal washing process. A black-gray rock with lower carbon content and harder than coal associated with the coal seam during the process. The gangue is discarded and occupies a large area of ​​land. The escape or leaching of sulfide in the gangue will pollute the atmosphere, farmland and water bodies. Gangue Mountains can also spontaneously ignite and cause fires, or collapse during the rainy season, silting up rivers and causing disasters. A large number of piles of coal gangue will not only occupy land and affect the ecological environmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
CPCC05B7/00C05G3/00C05C9/00C05C11/00C05D1/00C05D3/00C05D9/00C05F11/00C05F11/08
Inventor 汪中奇
Owner HEFEI SHENWO HORTICULTURE CO LTD
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