CN110894576A - Metallurgical auxiliary material and preparation method thereof - Google Patents
Metallurgical auxiliary material and preparation method thereof Download PDFInfo
- Publication number
- CN110894576A CN110894576A CN201811068326.2A CN201811068326A CN110894576A CN 110894576 A CN110894576 A CN 110894576A CN 201811068326 A CN201811068326 A CN 201811068326A CN 110894576 A CN110894576 A CN 110894576A
- Authority
- CN
- China
- Prior art keywords
- ash
- auxiliary material
- parts
- metallurgical auxiliary
- water
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- C22B1/248—Binding; Briquetting ; Granulating of metal scrap or alloys
-
- 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
-
- 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
Abstract
The invention provides a metallurgical auxiliary material and a preparation method and application thereof, wherein the metallurgical auxiliary material comprises the following raw material components in parts by weight: 100 parts of LT ash, 0.5-5 parts of dry powder binder and 1-6 parts of water; the LT ash is converter dry dedusting ash. The invention provides a technical scheme for preparing metallurgical auxiliary materials by utilizing steelmaking wastes, which improves the value of LT ash and solves the environmental protection pressure; the pelletizing rate of the obtained pellet type metallurgical auxiliary material reaches more than 90 percent, and the compression strength of the pellet is good.
Description
Technical Field
The invention relates to a metallurgical material, in particular to a metallurgical auxiliary material and a preparation method thereof.
Background
In recent years, the benefits of the steel industry are continuously low, the environmental protection pressure is further increased, and the main research direction is now directed when the steel-making system realizes clean production and low-cost production.
The steel-making dedusting ash obtained by the LT dry method electric precipitation process mobile phone is called LT ash for short. However, steel mills produce tens of thousands of tons of LT ash every year, and if the LT ash is not utilized and discarded, the LT ash not only needs a site of the other side and corresponding environmental protection measures, but also has the hidden trouble of secondary pollution.
In the prior art, LT ash is adopted to replace part of common raw materials such as sinter, lime and the like for a dephosphorizing agent; through reasonable proportioning, when a certain amount of LT ash is mixed, the total level of the LT ash composite dephosphorization agent is equivalent to that of the common dephosphorization powder, and the field production requirement can be met. But such use does not effectively increase the added value of LT ash.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a metallurgical auxiliary material and a method for preparing the same, which solve the problems of the prior art.
To achieve the above objects and other related objects, the present invention is achieved by the following technical solutions.
The invention provides a metallurgical auxiliary material which comprises the following raw material components in parts by weight:
100 parts by weight of LT ash
0.5-5 parts by weight of dry powder binder
1-6 parts of water;
the LT ash is converter dry dedusting ash.
Preferably, the water content of the LT ash does not exceed 2 wt%.
Preferably, the grade of iron in the LT ash is 55-65%.
Preferably, the LT ash is subjected to digestion treatment, and the digestion treatment method comprises the following steps: mixing the converter dry-method fly ash with 10 wt% -20 wt% of water, and then adding the mixture into a digestion bin for digestion. More preferably, the time for digestion is not less than 12 hours. The purpose of digestion is to remove free CaO contained in the converter dry fly ash.
The invention provides a preparation method of a metallurgical auxiliary material, which comprises the following steps: mixing LT ash, a dry powder binder and water; and forming a spherical product by using a high-pressure ball press.
Preferably, the mixing is carried out using an intensive mixer.
Preferably, the pressure of the high-pressure ball press machine is 35000-40000 MPa.
Preferably, the diameter of the pellet-shaped product is 400mm to 500 mm.
The invention also discloses the application of the metallurgical auxiliary material in the field of metallurgy.
The invention provides a technical scheme for preparing metallurgical auxiliary materials by utilizing steelmaking wastes, which improves the value of LT ash and solves the environmental protection pressure; the pelletizing rate of the obtained pellet type metallurgical auxiliary material reaches more than 90 percent, and the compression strength of the pellet is good.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Before the present embodiments are further described, it is to be understood that the scope of the invention is not limited to the particular embodiments described below; it is also to be understood that the terminology used in the examples is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention. Test methods in which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under conditions recommended by the respective manufacturers.
When numerical ranges are given in the examples, it is understood that both endpoints of each of the numerical ranges and any value therebetween can be selected unless the invention otherwise indicated. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In addition to the specific methods, devices, and materials used in the examples, any methods, devices, and materials similar or equivalent to those described in the examples may be used in the practice of the invention in addition to the specific methods, devices, and materials used in the examples, in keeping with the knowledge of one skilled in the art and with the description of the invention.
LT ash used in embodiments 1-4 of the application is subjected to digestion treatment, and the digestion treatment method comprises the following steps: and mixing the converter dry-method fly ash with 10 wt% of water, and adding the mixture into a digestion bin for digestion. More preferably, the time for digestion is not less than 12 hours. The purpose of digestion is to remove free CaO contained in the converter dry fly ash.
LT ash used in embodiments 5-6 of the application is subjected to digestion treatment, and the digestion treatment method comprises the following steps: and mixing the converter dry dedusting ash with 20 wt% of water, and adding the mixture into a digestion bin for digestion. More preferably, the time for digestion is not less than 12 hours. The purpose of digestion is to remove free CaO contained in the converter dry fly ash.
Example 1
The metallurgical auxiliary material in the embodiment comprises the following raw material components in parts by weight:
100 parts by weight of LT ash
0.5 part by weight of dry powder binder
1 part by weight of water;
the LT ash is converter dry dedusting ash.
The LT ash has a water content of not more than 2 wt%.
The grade of iron in the LT ash is 55-65%.
Mixing LT ash, a dry powder binder and water; and forming a spherical product by using a high-pressure ball press.
The mixing was carried out using an intensive mixer.
The pressure of the high-pressure ball press machine is 38000 MPa.
The diameter of the pellet-shaped product is 450 mm.
Example 2
The metallurgical auxiliary material in the embodiment comprises the following raw material components in parts by weight:
100 parts by weight of LT ash
5 parts by weight of dry powder binder
2 parts of water;
the LT ash is converter dry dedusting ash.
The LT ash has a water content of not more than 2 wt%.
The grade of iron in the LT ash is 55-65%.
Mixing LT ash, a dry powder binder and water; and forming a spherical product by using a high-pressure ball press.
The mixing was carried out using an intensive mixer.
The pressure of the high-pressure ball press machine is 38000 MPa.
The diameter of the pellet-shaped product is 400 mm.
Example 3
The metallurgical auxiliary material in the embodiment comprises the following raw material components in parts by weight:
100 parts by weight of LT ash
3 parts of dry powder binder
6 parts of water;
the LT ash is converter dry dedusting ash.
The LT ash has a water content of not more than 2 wt%.
The grade of iron in the LT ash is 55-65%.
Mixing LT ash, a dry powder binder and water; and forming a spherical product by using a high-pressure ball press.
The mixing was carried out using an intensive mixer.
The pressure of the high-pressure ball press machine is 40000 MPa.
The diameter of the pellet-shaped product is 400 mm.
Example 4
The metallurgical auxiliary material in the embodiment comprises the following raw material components in parts by weight:
100 parts by weight of LT ash
4 parts of dry powder binder
4 parts of water;
the LT ash is converter dry dedusting ash.
The LT ash has a water content of not more than 2 wt%.
The grade of iron in the LT ash is 55-65%.
Mixing LT ash, a dry powder binder and water; and forming a spherical product by using a high-pressure ball press.
The mixing was carried out using an intensive mixer.
The pressure of the high-pressure ball press machine is 39000 MPa.
The diameter of the pelletized product is 380 mm.
Example 5
The metallurgical auxiliary material in the embodiment comprises the following raw material components in parts by weight:
100 parts by weight of LT ash
1 part by weight of dry powder binder
3 parts of water;
the LT ash is converter dry dedusting ash.
The LT ash has a water content of not more than 2 wt%.
The grade of iron in the LT ash is 55-65%.
Mixing LT ash, a dry powder binder and water; and forming a spherical product by using a high-pressure ball press.
The mixing was carried out using an intensive mixer.
The pressure of the high-pressure ball press machine is 35000 MPa.
The diameter of the pellet-shaped product is 450 mm.
Example 6
The metallurgical auxiliary material in the embodiment comprises the following raw material components in parts by weight:
100 parts by weight of LT ash
2.5 parts by weight of dry powder binder
4 parts of water;
the LT ash is converter dry dedusting ash.
The LT ash has a water content of not more than 2 wt%.
The grade of iron in the LT ash is 55-65%.
Mixing LT ash, a dry powder binder and water; and forming a spherical product by using a high-pressure ball press.
The mixing was carried out using an intensive mixer.
The pressure of the high-pressure ball press machine is 35000 MPa.
The diameter of the pellet-shaped product is 480 mm.
The method provided in the embodiments 1-6 of the application has the advantages of strong continuity, pellet forming rate of the pellets reaching more than 90%, good compression strength of the pellets, and no breakage after free falling at a height of 3 m.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The metallurgical auxiliary material is characterized by comprising the following raw material components in parts by weight:
100 parts by weight of LT ash
0.5-5 parts by weight of dry powder binder
1-6 parts of water;
the LT ash is converter dry dedusting ash.
2. Metallurgical auxiliary material according to claim 1, wherein the LT ash has a water content of not more than 2 wt.%.
3. A metallurgical auxiliary material according to claim 1, wherein the grade of iron in the LT ash is 55-65%.
4. The metallurgical auxiliary material according to claim 1, wherein the LT ash is subjected to digestion treatment, and the digestion treatment method comprises the following steps: mixing the converter dry-method fly ash with 10 wt% -20 wt% of water, and then adding the mixture into a digestion bin for digestion.
5. A metallurgical auxiliary material according to claim 4, wherein the digestion time is not less than 12 hours.
6. A method for preparing a metallurgical auxiliary material according to any one of claims 1 to 5, comprising the following steps: mixing LT ash, a dry powder binder and water; and forming a spherical product by using a high-pressure ball press.
7. The method according to claim 6, wherein the mixing is carried out using an intensive mixer.
8. The preparation method of claim 6, wherein the pressure of the high-pressure ball press machine is 35000-40000 MPa.
9. The method of claim 6, wherein the pellet-like product has a diameter of 400mm to 500 mm.
10. Use of a metallurgical auxiliary material according to any one of claims 1 to 5 in the field of metallurgy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811068326.2A CN110894576A (en) | 2018-09-13 | 2018-09-13 | Metallurgical auxiliary material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811068326.2A CN110894576A (en) | 2018-09-13 | 2018-09-13 | Metallurgical auxiliary material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110894576A true CN110894576A (en) | 2020-03-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811068326.2A Pending CN110894576A (en) | 2018-09-13 | 2018-09-13 | Metallurgical auxiliary material and preparation method thereof |
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| CN (1) | CN110894576A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367499A (en) * | 2011-09-02 | 2012-03-07 | 北京首钢国际工程技术有限公司 | Technology for producing cold-bonded pellets from dust collected by converter dry dedusting |
| CN102816925A (en) * | 2012-08-24 | 2012-12-12 | 首钢总公司 | Method and system for recycling iron-containing sludge |
| CN103103310A (en) * | 2011-11-11 | 2013-05-15 | 攀钢集团西昌钢钒有限公司 | Vanadium extraction cold pressing block and preparation method and applications thereof and vanadium extraction method |
| 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 |
| CN106591575A (en) * | 2017-03-11 | 2017-04-26 | 重庆臻焱节能环保科技有限公司 | Low-energy-consumption cold-pressing pellet and preparation method thereof |
| CN107460312A (en) * | 2017-09-12 | 2017-12-12 | 重庆大学 | Binding agent and cooled agglomerated pellet for converter dry dedusting ash cooled agglomerated pellet |
-
2018
- 2018-09-13 CN CN201811068326.2A patent/CN110894576A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367499A (en) * | 2011-09-02 | 2012-03-07 | 北京首钢国际工程技术有限公司 | Technology for producing cold-bonded pellets from dust collected by converter dry dedusting |
| CN103103310A (en) * | 2011-11-11 | 2013-05-15 | 攀钢集团西昌钢钒有限公司 | Vanadium extraction cold pressing block and preparation method and applications thereof and vanadium extraction method |
| CN102816925A (en) * | 2012-08-24 | 2012-12-12 | 首钢总公司 | Method and system for recycling iron-containing sludge |
| 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 |
| CN106591575A (en) * | 2017-03-11 | 2017-04-26 | 重庆臻焱节能环保科技有限公司 | Low-energy-consumption cold-pressing pellet and preparation method thereof |
| CN107460312A (en) * | 2017-09-12 | 2017-12-12 | 重庆大学 | Binding agent and cooled agglomerated pellet for converter dry dedusting ash cooled agglomerated pellet |
Non-Patent Citations (1)
| Title |
|---|
| 洪建国等: "LT法除尘灰冷压球技术的开发与应用", 《梅山科技》 * |
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Application publication date: 20200320 |
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