Method and system for producing high-silicon compound fertilizer by activating coal gangue

A technology of coal gangue and compound fertilizer, applied in the directions of potash fertilizer, magnesium fertilizer, organic fertilizer, etc., can solve the problem of difficult large-scale utilization of coal gangue, and achieve the effects of enhancing energy flow density, reducing microwave power, and expanding processing capacity

Active Publication Date: 2021-11-02
中科鼎干北京环保发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a method and system for activating coal gangue to produce high-silicon compound fertilizer, so as to solve the technology that is difficult to use coal gangue to produce fertilizer on a large scale in the prior art question

Method used

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  • Method and system for producing high-silicon compound fertilizer by activating coal gangue
  • Method and system for producing high-silicon compound fertilizer by activating coal gangue
  • Method and system for producing high-silicon compound fertilizer by activating coal gangue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] A method for activating coal gangue to produce high-silicon compound fertilizer, the method comprising:

[0096] S1. Obtain coal gangue;

[0097] S2. Crushing, screening and dedusting the coal gangue to obtain a coal gangue pile;

[0098] S3. The coal gangue pile is activated by microwave heating in a rotating microwave field and a rotating wind field, and then kept warm to obtain activated gangue;

[0099] S4. The activated coal gangue is quenched and crushed to obtain coal gangue powder;

[0100] S5. Adding organic matter and trace element additives to the gangue powder and mixing to obtain a mixture;

[0101] S61. Obtain the first water content of the mixture;

[0102] S62 obtaining the target water content of the mixture;

[0103] S63 According to the first water content and the target water content, it is judged whether the mixture needs to be air-dried and then cooled;

[0104] If yes, calculate the dehydration amount according to the first water content and ...

Embodiment 2

[0126] Compared with embodiment 2 and embodiment 1, the difference between embodiment 2 and embodiment 1 is:

[0127] The end temperature of microwave heating is 700°C, and the time is 40min;

[0128] The time of heat preservation is 40min.

[0129] The particle size of the coal gangue pile is 5mm to 25mm.

[0130] Organic matter includes chicken manure and peat;

[0131] Trace elements include trace element additives containing at least one of phosphorus, potassium, calcium, magnesium, zinc, selenium, copper, molybdenum, chromium, cobalt, and iron; beneficial bacteria include Bacillus subtilis, Bacillus megaterium, Bacillus licheniformis and thuringiensis At least one type of bacillus, in which trace elements and beneficial bacteria are added according to the lack of soil testing to ensure the quality and effect of the fertilizer.

[0132] The activation box is set at 35° to the horizontal plane.

[0133] The distribution porosity of the air distribution holes 331 on the ...

Embodiment 3

[0136] Embodiment 3 is compared with embodiment 1, and the difference between embodiment 3 and embodiment 1 is:

[0137] The end temperature of microwave heating is 850°C, and the time is 60min;

[0138] The time of heat preservation is 50min.

[0139] The activation box is set at 85° to the horizontal plane.

[0140] The particle size of the coal gangue pile is 5mm to 25mm.

[0141] Organic matter includes chicken manure and peat;

[0142] Trace elements include trace element additives containing at least one of phosphorus, potassium, calcium, magnesium, zinc, selenium, copper, molybdenum, chromium, cobalt, and iron; beneficial bacteria include Bacillus subtilis, Bacillus megaterium, Bacillus licheniformis and thuringiensis At least one type of bacillus, in which trace elements and beneficial bacteria are added according to the lack of soil testing to ensure the quality and effect of the fertilizer.

[0143] The distribution porosity of the air distribution holes 331 on t...

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Abstract

The invention relates to the field of solid waste recycling, in particular to a method and system for producing a high-silicon compound fertilizer by activating coal gangue, and the method comprises the following steps: obtaining coal gangue; the coal gangue is subjected to crushing, screening and dust removal crushing, screening and dust removal, and a coal gangue pile is obtained; activating the coal gangue pile by adopting microwave heating of a rotating microwave field and a rotating wind field, and then preserving heat to obtain activated coal gangue; the activated coal gangue is subjected to cold quenching and then smashed, and coal gangue powder is obtained; adding organic matters and trace element additives into the coal gangue powder, and mixing to obtain a mixture; adding beneficial bacteria into the mixture, and mixing to obtain the high-silicon compound fertilizer. The system comprises a dust removal chamber, a crushing cylinder, a microwave heating activation device, a water spraying cold quenching chamber, a crushing chamber, a first stirring tank, an air drying and cooling chamber, a second stirring tank and a compound fertilizer storage chamber, activation is performed by adopting microwave heating including a rotary microwave field and a rotary wind field, so that the effect of producing the fertilizer by utilizing the coal gangue on a large scale is realized.

Description

technical field [0001] The application relates to the field of solid waste recycling, in particular to a method and system for producing high-silicon compound fertilizer from activated coal gangue. Background technique [0002] Coal gangue is a solid waste produced during coal mining and washing process. It is mainly a mixture of inorganic and organic matter. The inorganic matter mainly contains minerals and water, and the minerals generally contain silicon-aluminum components. Among them, SiO 2 and Al 2 o 3 The average content of coal gangue fluctuates between 40% to 60% and 15% to 30%, respectively; organic matter generally accounts for 20% of coal gangue content, and is rich in B, Zn, Cu, Co, Mo, Mn necessary for plant growth , Se and other trace elements, therefore, coal gangue can also be used as raw material, appropriate addition of other nutrients, activation treatment, to make mineral fertilizers or organic fertilizers. [0003] The activation of coal gangue inclu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/80
CPCC05G3/00C05G3/80C05B17/00C05D1/00C05D3/00C05D5/00C05D9/00C05D9/02C05F3/00C05F11/02Y02W30/40
Inventor 张文平纪伟李东游苗春光开耀泽邝晨辉文晏祥谢文贤
Owner 中科鼎干北京环保发展有限公司
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