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Straw biomass charcoal based calcium magnesium phosphate fertilizer and preparation method thereof

A technology of carbon-based calcium magnesium phosphate fertilizer and rice straw biochar, applied in fertilization equipment, fertilizer mixture, application, etc., can solve the problems that have not been reported on the use of rice straw biochar and calcium magnesium phosphate fertilizer, and achieve high tar cracking activity and stability, improve anti-coke performance, and reduce environmental pollution

Inactive Publication Date: 2015-08-05
GUANGDONG DAZHONG AGRI SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, there are no research reports on the use of rice straw biochar and calcium magnesium phosphate fertilizers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] A preparation method of rice straw biomass charcoal-based calcium magnesium phosphate fertilizer, comprising the following steps:

[0063] (1) Pyrolysis of straw to obtain straw biochar and combustible gas;

[0064] (2) Mix the raw materials of calcium magnesium phosphate fertilizer with rice straw biomass charcoal accounting for 20% of the total weight of calcium magnesium phosphate fertilizer, melt and granulate, and collect the pellets; wherein, the heat required for melting is provided by the combustion of the combustible gas ;

[0065] The calcium magnesium phosphate fertilizer includes the following raw materials in parts by weight: 20 parts of base fertilizer, 0.11 part of mixed magnesium sulfate solution, 0.5 part of composite bacterial agent and 0.5 part of soil conditioner; wherein, the base fertilizer contains 12% by weight of P 2 o 5 , MgO with a content of 8% by weight, CaO with a content of 25% by weight, and SiO with a content of 20% by weight 2 , FeO ...

Embodiment 2

[0079] A preparation method of rice straw biomass charcoal-based calcium magnesium phosphate fertilizer, comprising the following steps:

[0080] (1) Pyrolysis of straw to obtain straw biochar and combustible gas;

[0081] (2) Mix the raw materials of calcium magnesium phosphate fertilizer with rice straw biomass charcoal accounting for 21% of the total weight of calcium magnesium phosphate fertilizer, melt and granulate, and collect the pellets; wherein, the heat required for melting is provided by the combustion of the combustible gas ;

[0082] The calcium magnesium phosphate fertilizer includes the following raw materials in parts by weight: 30 parts of base fertilizer, 0.12 part of mixed magnesium sulfate solution, 0.7 part of composite bacterial agent and 0.7 part of soil conditioner; wherein, the base fertilizer contains 14% by weight of P 2 o 5 , MgO with a content of 10% by weight, CaO with a content of 27% by weight, and SiO with a content of 22% by weight 2 , FeO...

Embodiment 3

[0096] A preparation method of rice straw biomass charcoal-based calcium magnesium phosphate fertilizer, comprising the following steps:

[0097] (1) Pyrolysis of straw to obtain straw biochar and combustible gas;

[0098] (2) Mix the raw materials of calcium magnesium phosphate fertilizer with rice straw biomass charcoal accounting for 22% of the total weight of calcium magnesium phosphate fertilizer, melt and granulate, and collect the pellets; wherein, the heat required for melting is provided by the combustion of the combustible gas ;

[0099] The calcium magnesium phosphate fertilizer includes the following raw materials in parts by weight: 40 parts of base fertilizer, 0.13 parts of mixed magnesium sulfate solution, 1 part of composite bacterial agent and 1 part of soil conditioner; wherein, the base fertilizer contains 16% by weight of P 2 o 5 , 12% by weight of MgO, 29% by weight of CaO, 25% by weight of SiO 2 , FeO with a weight percentage content of 1%, and MnO wit...

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Abstract

The invention relates to the technical field of calcium magnesium phosphate fertilizer, in particular to a straw biomass charcoal based calcium magnesium phosphate fertilizer and a preparation method thereof. The preparation method includes the steps: splitting straws at high temperature to obtain straw biomass charcoal and combustible gas; mixing, melting and pelletizing raw materials of the calcium magnesium phosphate fertilizer and the straw biomass charcoal accounting for 20-24% of the weight of the gross raw materials of the calcium magnesium phosphate fertilizer, and collecting pellets; cooling the collected pellets by negative pressure and screening the pellets; coating, packaging and delivering the screened pellets to obtain the straw biomass charcoal based calcium magnesium phosphate fertilizer. The straw biomass charcoal based calcium magnesium phosphate fertilizer has rich nutrient substances, nutrient elements are coordinately and persistently released, fertilizer nutrient utilization efficiency is high, soil can be effectively improved and fertilized, fertilizer utilization rate is increased, the content of soil organic matters is increased, soil bulk density is reduced, the moisture and fertilizer retention capacity of the soil is improved, crop growth is promoted, crop yield can be remarkably improved, crop quality is improved, and the fertilizer has obvious economic benefits.

Description

technical field [0001] The invention relates to the technical field of calcium-magnesium phosphate fertilizer, in particular to a straw biomass charcoal-based calcium-magnesium phosphate fertilizer and a preparation method thereof. Background technique [0002] Fertilization has become one of the indispensable technical measures of agricultural production, contributing more than half of crop production. The utilization rate of fertilizers in China has always been relatively low. For example, the average utilization rate of nitrogen fertilizers for current crops is only about 30%, which is nearly 20 percentage points lower than that of developed countries. This is due to the unscientific fertilization methods on the one hand, and the fertilizer itself on the other hand. characteristics. It is urgent to improve fertilizer utilization efficiency, and research and development of new multifunctional fertilizers is one of the important ways to improve fertilizer utilization effic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
Inventor 林小明
Owner GUANGDONG DAZHONG AGRI SCI CO LTD
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