CN108588410B - Novel dedusting ash and heating material composite heating material and preparation method thereof - Google Patents
Novel dedusting ash and heating material composite heating material and preparation method thereof Download PDFInfo
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- CN108588410B CN108588410B CN201810372808.0A CN201810372808A CN108588410B CN 108588410 B CN108588410 B CN 108588410B CN 201810372808 A CN201810372808 A CN 201810372808A CN 108588410 B CN108588410 B CN 108588410B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
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Abstract
The invention relates to the technical field of metallurgy, in particular to a novel dedusting ash and heating material composite heating material, which comprises the following components in parts by weight: 65-70 parts of dedusting ash, 25-30 parts of a heat generating agent, 1-3 parts of water and 2-5 parts of a binder. Aiming at the problem that the dedusting ash can not be effectively consumed under the condition that the ratio of the waste steel of the converter is high, so that the environmental pollution such as resource waste, dust raising and the like is caused, the heating agent is added into the dedusting ash to produce a novel material capable of effectively increasing the temperature in the converter, so that the problem that the dedusting ash can not be consumed is effectively solved, the environmental pollution problem is also solved, the ratio of the waste steel can be effectively increased, and the ratio of the waste steel is increased by 1.5-2%.
Description
Technical Field
The invention relates to the technical field of metallurgy, in particular to a novel dedusting ash and heating material composite heating material and a preparation method thereof.
Background
A converter dust removal system can generate a large amount of dust, and the dust in the prior art is mostly sent to a cold-pressed ball production line to be pressed into cold-pressed balls or sent to a rotary hearth furnace to produce metal balls. However, after the converter scrap ratio is increased, the heat balance in the converter reaches the limit, and the heat in the converter is insufficient, so that the metal balls/cold-pressed balls produced by taking the fly ash as the raw material cannot be effectively consumed, the fly ash cannot be effectively consumed, and the problems of resource waste, dust emission and other environmental pollution are caused.
Technical scheme
In order to solve the problems in the prior art, the invention discloses a novel material for composite heating of fly ash and heating materials, which effectively solves the problems of resource waste and environmental pollution and improves the steel-to-scrap ratio of a converter.
In order to achieve the purpose, the invention adopts the following technical scheme:
a novel dedusting ash and heating material composite heating material comprises the following components in parts by weight: 65-70 parts of dedusting ash, 25-30 parts of a heat generating agent, 1-3 parts of water and 2-5 parts of a binder.
Preferably, the heat generating agent is one or a combination of two of ferrosilicon particles and silicon carbide particles.
Preferably, the dedusting ash and the exothermic agent account for 95% and the water and the binder account for 5% of the novel material which is compositely heated by the dedusting ash and the exothermic material.
Preferably, the weight ratio of the fly ash to the exothermic agent is 7: 3.
Preferably, the material comprises the following components in parts by weight: 66.5 parts of dedusting ash, 28.5 parts of exothermic agent, 2 parts of water and 3 parts of binder.
Preferably, the material comprises the following components in parts by weight: 66.5 parts of dust removing ash, 28.5 parts of ferrosilicon particles, 2 parts of water and 3 parts of binder.
Preferably, the binder is an organic binder or a liquid chemical binder.
The invention also discloses a preparation method of any one of the dedusting ash and heating material composite heating novel materials, and the specific scheme is as follows:
a preparation method of a novel dedusting ash and heating material composite heating material comprises the following steps: raw material receiving → ingredient → digesting → mixing → pressing ball → drying.
Preferably, in the raw material receiving step, the dedusting ash is conveyed from the dedusting ash collecting bin to the dedusting ash storage bin in a pneumatic conveying mode, and the heating agent is conveyed to the heating agent storage bin; mixing the dedusting ash and the heating agent for water distribution in the material preparation step, wherein the water content is 1% -3%; and in the digestion step, the material enters a digestion bin for digestion, and the digestion time is 10-12 hours.
Preferably, the materials in the mixing step enter a strong mixer to be matched with a binder, and the content of the binder is 3-5%; and in the step of pressing the balls, the materials enter a ball press machine to press the balls, and the pressure of the ball press machine is 19 Mpa.
Preferably, the drying process conditions are as follows: drying at normal temperature, and adopting a ball pressing self-heating process: the binder contains self-heating components, the temperature after balling is 80-100 ℃, and the drying time is as follows: 4-6 hours.
Advantageous effects
1. Aiming at the problem that the dedusting ash can not be effectively consumed under the condition that the ratio of the waste steel of the converter is high, so that the environmental pollution such as resource waste, dust raising and the like is caused, the heating agent is added into the dedusting ash to produce a novel material capable of effectively increasing the temperature in the converter, so that the problem that the dedusting ash can not be consumed is effectively solved, the environmental pollution problem is also solved, the ratio of the waste steel can be effectively increased, and the ratio of the waste steel is increased by 1.5-2%.
2. The novel material adopts ferrosilicon particles/silicon carbide particles as a framework, the ball pressing strength is higher, the powder rate is reduced by 2-5% compared with the normal ball pressing powder rate, and the normal ball pressing powder rate is 10-13%.
3. The novel material adopts heating material pressing balls, the pressing balls have a heating effect, and the weight ratio of the heating agent: the ratio of dust removal =3:7 is configured, the heating effect of the ferrosilicon pellet press ball is 3.5 ℃/t, the heating effect of the silicon carbide press ball is 0 ℃/t, (the temperature of the normal cold-pressed ball is reduced to 13-15 ℃/t).
4. The novel material unit price of the invention is as follows: 1941 element; the usage amount of each furnace is as follows: 3.5 t; cost of steel materials: -9/t; lime cost: 2.06 yuan/t; novel material cost: 18.2 yuan/t; total cost: = 9+2.06+18.2=11.2 yuan/t; yield-increasing benefit: =22.4 yuan/t (calculated as 800 yuan for steel gross profit); the total benefit =22.4-11.2=11.2 yuan/t, the annual output is 600 ten thousand tons, and the total benefit is as follows: 6720 ten thousand yuan/year.
Detailed Description
For better understanding of the present invention, the technical solution of the present invention will be described in detail with specific examples, but the present invention is not limited thereto.
Example 1
A novel dedusting ash and heating material composite heating material comprises the following components in parts by weight: 65 parts of dedusting ash, 25 parts of ferrosilicon particles, 1 part of water and 2 parts of binder, wherein the binder is organic binder.
The preparation method of the novel material for generating heat by compounding the dedusting ash and the heating material comprises the following steps: raw material receiving → ingredient → digesting → mixing → pressing ball → drying.
In the raw material receiving step, conveying the dust to a dust storage bin from a dust collection bin in a pneumatic conveying mode, and conveying a heating agent to a heating agent storage bin; in the burdening step, the fly ash and the heating agent are mixed and distributed with water, and the water content is 1%; and in the digestion step, the materials enter a digestion bin for digestion, and the digestion time is 10 hours. In the mixing step, the materials enter a powerful mixer to be matched with a binder, and the content of the binder is 3%; and in the step of pressing the balls, the materials enter a ball press machine to press the balls, and the pressure of the ball press machine is 19 Mpa. The drying process conditions are as follows: drying at normal temperature, and adopting a ball pressing self-heating process: the binder contains self-heating components, the temperature after balling is 80 ℃, and the drying time is as follows: for 4 hours.
Example 2
A novel dedusting ash and heating material composite heating material comprises the following components in parts by weight: 65 parts of dedusting ash, 30 parts of ferrosilicon particles, 2 parts of water and 3 parts of binder, wherein the binder is a liquid chemical binder.
The preparation method of the novel material for generating heat by compounding the dedusting ash and the heating material comprises the following steps: raw material receiving → ingredient → digesting → mixing → pressing ball → drying.
In the raw material receiving step, conveying the dust to a dust storage bin from a dust collection bin in a pneumatic conveying mode, and conveying a heating agent to a heating agent storage bin; in the burdening step, the fly ash and the heating agent are mixed and distributed with water, and the water content is 3%; and in the digestion step, the materials enter a digestion bin for digestion, and the digestion time is 12 hours. In the mixing step, the materials enter a powerful mixer to be matched with a binder, and the content of the binder is 5%; and in the step of pressing the balls, the materials enter a ball press machine to press the balls, and the pressure of the ball press machine is 19 Mpa. The drying process conditions are as follows: drying at normal temperature, and adopting a ball pressing self-heating process: the binder contains self-heating components, the temperature after balling is 80-100 ℃, and the drying time is as follows: 4-6 hours.
Example 3
A novel dedusting ash and heating material composite heating material comprises the following components in parts by weight: 65 parts of dedusting ash, 30 parts of silicon carbide particles, 2 parts of water and 3 parts of binder.
The preparation method of the novel material for generating heat by compounding the dedusting ash and the heating material comprises the following steps: raw material receiving → ingredient → digesting → mixing → pressing ball → drying.
In the raw material receiving step, conveying the dust to a dust storage bin from a dust collection bin in a pneumatic conveying mode, and conveying a heating agent to a heating agent storage bin; in the burdening step, the fly ash and the heating agent are mixed and distributed with water, and the water content is 2%; and in the digestion step, the materials enter a digestion bin for digestion, and the digestion time is 11 hours. In the mixing step, the materials enter a powerful mixer to be matched with a binder, and the content of the binder is 4%; and in the step of pressing the balls, the materials enter a ball press machine to press the balls, and the pressure of the ball press machine is 19 Mpa. The drying process conditions are as follows: drying at normal temperature, and adopting a ball pressing self-heating process: the binder contains self-heating components, the temperature after balling is 80-100 ℃, and the drying time is as follows: 4-6 hours.
Example 4
A novel dedusting ash and heating material composite heating material comprises the following components in parts by weight: 70 parts of dedusting ash, 30 parts of exothermic agent, 2 parts of water and 2.8 parts of binder. The heating agent is a combination of silicon iron particles and silicon carbide particles, and the weight ratio of the silicon iron particles to the silicon carbide particles is 2-5: 1.
The preparation method of the novel material for generating heat by compounding the dedusting ash and the heating material comprises the following steps: raw material receiving → ingredient → digesting → mixing → pressing ball → drying.
In the raw material receiving step, conveying the dust to a dust storage bin from a dust collection bin in a pneumatic conveying mode, and conveying a heating agent to a heating agent storage bin; in the burdening step, the fly ash and the heating agent are mixed and distributed with water, and the water content is 1%; and in the digestion step, the materials enter a digestion bin for digestion, and the digestion time is 11 hours. In the mixing step, the materials enter a powerful mixer to be matched with a binder, and the content of the binder is 3%; and in the step of pressing the balls, the materials enter a ball press machine to press the balls, and the pressure of the ball press machine is 19 Mpa. The drying process conditions are as follows: drying at normal temperature, and adopting a ball pressing self-heating process: the binder contains self-heating components, the temperature after balling is 80-100 ℃, and the drying time is as follows: 4-6 hours.
Claims (8)
1. A novel dedusting ash and heating material composite heating material comprises the following components in parts by weight: 65-70 parts of dedusting ash, 25-30 parts of a heating agent, 1-3 parts of water and 2-5 parts of a binder;
the preparation method of the novel material for generating heat by compounding the dedusting ash and the heating material comprises the following steps: raw material receiving → ingredient → digestion → mixing → pressing ball → drying, the process conditions of the drying are as follows: drying at normal temperature, and adopting a ball pressing self-heating process: the binder contains self-heating components, the temperature after balling is 80-100 ℃, and the drying time is as follows: 4-6 hours.
2. The novel dedusting ash and heating material composite heating material as claimed in claim 1, is characterized in that: the heat generating agent is one or the combination of two of ferrosilicon particles and silicon carbide particles.
3. The novel dedusting ash and heating material composite heating material as claimed in claim 1, is characterized in that: the dust removal ash and the exothermic agent account for 95% and the water and the binder account for 5% of the novel material compositely heated by the dust removal ash and the exothermic material.
4. The novel dedusting ash and heating material composite heating material as claimed in claim 1, is characterized in that: the weight ratio of the dedusting ash to the exothermic agent is 7: 3.
5. The novel dedusting ash and heating material composite heating material as claimed in claim 1, is characterized in that: the material comprises the following components in parts by weight: 66.5 parts of dedusting ash, 28.5 parts of exothermic agent, 2 parts of water and 3 parts of binder.
6. The novel dedusting ash and heating material composite heating material as claimed in claim 1, is characterized in that: the material comprises the following components in parts by weight: 66.5 parts of dust removing ash, 28.5 parts of ferrosilicon particles, 2 parts of water and 3 parts of binder.
7. The novel dedusting ash and heating material composite heating material as claimed in claim 1, is characterized in that: in the raw material receiving step, conveying the dust to a dust storage bin from a dust collection bin in a pneumatic conveying mode, and conveying a heating agent to a heating agent storage bin; in the burdening step, mixing the dedusting ash and the heating agent for water distribution, wherein the water content is 1-3%; and in the digestion step, the material enters a digestion bin for digestion, and the digestion time is 10-12 hours.
8. The novel dedusting ash and heating material composite heating material as claimed in claim 1, is characterized in that: in the mixing step, the materials enter a powerful mixer to be matched with a binder, and the content of the binder is 3-5%; and in the step of pressing the balls, the materials enter a ball press machine to press the balls, and the pressure of the ball press machine is 19 Mpa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810372808.0A CN108588410B (en) | 2018-04-24 | 2018-04-24 | Novel dedusting ash and heating material composite heating material and preparation method thereof |
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| CN201810372808.0A CN108588410B (en) | 2018-04-24 | 2018-04-24 | Novel dedusting ash and heating material composite heating material and preparation method thereof |
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| CN108588410B true CN108588410B (en) | 2021-09-07 |
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| CN117867216A (en) * | 2024-01-11 | 2024-04-12 | 河北柠一科技有限公司 | Siliceous quick-drying material and application method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705333A (en) * | 2009-11-28 | 2010-05-12 | 山西太钢不锈钢股份有限公司 | Reduction and utilization method of dedusting ash of stainless steel |
| CN104109755A (en) * | 2014-07-30 | 2014-10-22 | 中冶南方工程技术有限公司 | Production system and method of cold-pressed metal pellets of fly ashes |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705333A (en) * | 2009-11-28 | 2010-05-12 | 山西太钢不锈钢股份有限公司 | Reduction and utilization method of dedusting ash of stainless steel |
| CN104109755A (en) * | 2014-07-30 | 2014-10-22 | 中冶南方工程技术有限公司 | Production system and method of cold-pressed metal pellets of fly ashes |
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