Biomass-charcoal basal fertilizer and preparation method therefor

A biochar and base fertilizer technology, applied in the direction of calcium fertilizer, nitrogen fertilizer, potash fertilizer, etc., can solve the problems of easily damaged nutrients and biochar, poor adsorption, insufficient hardness, etc., achieve good bonding effect, good effect, The effect of short drying time

Inactive Publication Date: 2018-06-15
BEIJING SANJU GREEN ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects that the biomass charcoal-based fertilizer in the prior art is not easy to shape, not hard enough, easy to break, and the adsorption of nutrients and biochar is not firm, and the fertilizer efficiency is shortened, thereby providing a biochar Base fertilizer and preparation method thereof

Method used

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  • Biomass-charcoal basal fertilizer and preparation method therefor
  • Biomass-charcoal basal fertilizer and preparation method therefor
  • Biomass-charcoal basal fertilizer and preparation method therefor

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A biomass charcoal-based fertilizer, comprising the following raw materials in parts by weight: 15kg of biomass charcoal, 30kg of urea, 20kg of ammonium dihydrogen phosphate, 25kg of potassium sulfate, 5kg of bentonite, and 5kg of calcium sulfate.

[0027] Its preparation method is:

[0028] (1) Each component is weighed and mixed uniformly;

[0029] (2) Granulating the mixed raw materials. The granulation process uses high-temperature water vapor as the reaction medium, and the granulation temperature is controlled to be about 100° C. by high-temperature water vapor;

[0030] (3) The formed biochar-based fertilizer granules are rapidly dried at 400° C. to make the moisture content lower than 5%, and then passed through a 20-mesh sieve to obtain biochar-based fertilizers with a fertilizer particle size greater than 1 mm and less than 4.75 mm.

Embodiment 2

[0032] A biomass charcoal-based fertilizer, comprising the following raw materials in parts by weight: 20kg of biomass charcoal, 20kg of urea, 30kg of ammonium dihydrogen phosphate, 15kg of potassium chloride, 10kg of bentonite, and 1kg of calcium sulfate.

[0033] Its preparation method is:

[0034] (1) Each component is weighed and mixed uniformly;

[0035] (2) Granulating the mixed raw materials. The granulation process uses high-temperature steam as the reaction medium, and the granulation temperature is controlled by high-temperature steam to be about 140° C.;

[0036] (3) Rapidly dry the formed biochar-based fertilizer particles at 300° C. to make the moisture content lower than 12%, and then pass through a 20-mesh sieve to obtain biochar-based fertilizers with a fertilizer particle size greater than 1 mm and less than 4.75 mm.

Embodiment 3

[0038] A biomass charcoal-based fertilizer, comprising the following raw materials in parts by weight: 18kg of biomass charcoal, 25kg of urea, 25kg of ammonium dihydrogen phosphate, 20kg of potassium sulfate, 8kg of bentonite, and 3kg of calcium sulfate.

[0039] Its preparation method is:

[0040] (1) Each component is weighed and mixed uniformly;

[0041] (2) Granulating the mixed raw materials. The granulation process uses high-temperature steam as the reaction medium, and the granulation temperature is controlled to be about 120° C. by high-temperature steam;

[0042] (3) Rapidly dry the formed biochar-based fertilizer particles at 350° C. to make the moisture content lower than 5%, and then pass through a 20-mesh sieve to obtain biochar-based fertilizers with a fertilizer particle size greater than 1 mm and less than 4.75 mm.

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Abstract

The invention belongs to the technical field of agricultural fertilizers and particularly relates to a biomass-charcoal basal fertilizer and a preparation method therefor. The biomass-charcoal basal fertilizer is prepared from the following raw materials in parts by weight: 15-20 parts of biomass charcoal, 20-30 parts of urea, 20-30 parts of ammonium dihydrogen phosphate, 15-25 parts of potassiumsalt, 5-10 parts of bentonite and 1-5 parts of calcium sulfate. According to the preparation method for the biomass-charcoal basal fertilizer, a granulating process has physical and chemical double reactions, an amido bond of urea and a nitrogen-phosphorus bond of ammonium dihydrogen phosphate in the charcoal basal fertilizer are bonded to a charcoal group to change chemical shift under high-temperature steam reaction conditions, nutrients and a carbon skeleton are bonded to each other, the bonding among the raw materials is closer, and thus, the fertilizer effect is prolonged.

Description

technical field [0001] The invention belongs to the technical field of agricultural fertilizers, and in particular relates to a biomass charcoal-based fertilizer and a preparation method thereof. Background technique [0002] At present, my country's low-yield cultivated land accounts for about 75% of the cultivated land area, and the overall quality is not good. The cultivated land with organic matter content less than 1.5% accounts for 65% of the total area. As a means to greatly increase crop yield, the application of chemical fertilizers occupies a very important position in my country's agriculture, but there are also a series of problems at the same time. One of the most important problems is the low utilization rate of chemical fertilizers. Studies by Zhu Zhaoliang and others have shown that under the agricultural production level at that time, the seasonal utilization rates of chemical fertilizers for major grain crops in my country were 30%-35% for nitrogen fertili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C05G3/80
CPCC05B7/00C05G3/80C05G5/12C05C9/00C05D1/02C05D3/00C05D9/00
Inventor 付兴国张少明田然姜芳
Owner BEIJING SANJU GREEN ENERGY TECH CO LTD
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