CN112831804A - Production method for prebaked anode by using asphalt coke - Google Patents
Production method for prebaked anode by using asphalt coke Download PDFInfo
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- CN112831804A CN112831804A CN202011607923.5A CN202011607923A CN112831804A CN 112831804 A CN112831804 A CN 112831804A CN 202011607923 A CN202011607923 A CN 202011607923A CN 112831804 A CN112831804 A CN 112831804A
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- Prior art keywords
- coke
- anode
- prebaked
- mass
- pitch
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- 239000000571 coke Substances 0.000 title claims abstract description 22
- 239000010426 asphalt Substances 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000002156 mixing Methods 0.000 claims abstract description 23
- 239000011329 calcined coke Substances 0.000 claims abstract description 16
- 239000006253 pitch coke Substances 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 17
- 239000002994 raw material Substances 0.000 claims description 17
- 238000000227 grinding Methods 0.000 claims description 7
- 238000004898 kneading Methods 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 5
- 238000013329 compounding Methods 0.000 claims 2
- 239000011300 coal pitch Substances 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 239000002006 petroleum coke Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000009472 formulation Methods 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 239000002893 slag Substances 0.000 abstract description 2
- 239000011294 coal tar pitch Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 3
- 238000003801 milling Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
- C25C3/12—Anodes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
Abstract
The invention relates to a method for producing an anode by using pitch coke prebaked, which adopts a formula of blending the pitch coke with petroleum coke, can enlarge the application range of calcined coke and is beneficial to reducing the manufacturing cost of the anode. The prebaked anode prepared by the formulation of asphalt coke and petroleum coke has internal indexes superior to those of a common anode, and the using effect is obviously improved. The oxidation resistance of the anode is obviously enhanced, the electrolytic consumption is reduced by 1.5 percent, and the slag falling phenomenon is basically avoided.
Description
Technical Field
The invention relates to a production method of a prebaked anode by using pitch coke.
Background
The prebaked anode is used as an anode material in a prebaked aluminum electrolytic cell, and in the prior art, calcined coke is used as the most main raw material for producing the prebaked anode and accounts for about 85% of the proportion formula, so that various quality indexes of the prebaked anode play a decisive role in the quality control of the prebaked anode. However, in recent years, the quality of calcined coke is continuously deteriorated, and the quality of the anode is seriously influenced, so that the search of blending or replacing raw materials for producing the anode is imperative.
Disclosure of Invention
The invention aims at the problems and provides a production method of a prebaked anode by using pitch coke.
A production method of a prebaked anode by using asphalt coke comprises eight steps of calcining, crushing, screening, batching, kneading, molding, roasting and grooving, and is characterized in that the asphalt coke is added as a raw material component of the prebaked anode in the wet mixing step.
Further, the blending proportion of the asphalt coke is 13.5-18.5% of the total amount of the dry materials, the balance is calcined coke, and the asphalt coke and the calcined coke are mixed to form the dry materials according to the mass percentage.
Further, the blending proportion of the asphalt coke is 17% of the total amount of the dry materials in percentage by mass.
Further, in the step of milling, the milling purity of the raw material is 55-60%, and the Boolean value of the milled raw material is 3300-3800.
Further, in the step of batching, the components are as follows by mass percent:
further, in the step of batching, the components are as follows by mass percent:
further, in the kneading step, the mixing time is 30-35min, and the temperature is kept at 115-125 ℃.
Further, in the wet mixing step, coal tar pitch with the mass of 15.5 percent of that of the dry material is added for mixing for 30-35min, and the temperature is kept at 160-164 ℃.
The invention has the beneficial effects that:
the invention adopts the formula of blending the asphalt coke with the petroleum coke, can enlarge the application range of the calcined coke and is beneficial to reducing the manufacturing cost of the anode.
The prebaked anode prepared by the formulation of asphalt coke and petroleum coke has internal indexes superior to those of a common anode, and the using effect is obviously improved. The oxidation resistance of the anode is obviously enhanced, the electrolytic consumption is reduced by 1.5 percent, and the slag falling phenomenon is basically avoided.
Detailed Description
In order to make the technical solution of the present invention clearer and more clear, the present invention is further described below, and any solution obtained by substituting technical features of the technical solution of the present invention with equivalents and performing conventional reasoning falls within the scope of the present invention.
Example 1
A production method of prebaked anode by using pitch coke comprises the following steps:
(1) grinding the raw materials into powder, wherein the grinding purity of the raw materials is 57 percent, and the Boolean value of the raw materials is 3500;
(2) the preparation method comprises the following steps of proportioning, wherein in the proportioning step, the components in percentage by mass are as follows:
wherein the blending proportion of the asphalt coke is 17% of the total amount of the dry materials, the balance is calcined coke, and the asphalt coke and the calcined coke are mixed to form the dry materials in percentage by mass;
(3) kneading for 33min, and keeping the temperature at 120 deg.C.
(4) Wet mixing, adding coal tar pitch with the mass of 15.5 percent of the dry material, mixing for 32min, and keeping the temperature at 162 ℃.
Example 2
A production method of prebaked anode by using pitch coke comprises the following steps:
(1) grinding the raw materials into powder, wherein the grinding purity of the raw materials is 55 percent, and the grinding brin value of the raw materials is 3300;
(2) the preparation method comprises the following steps of proportioning, wherein in the proportioning step, the components in percentage by mass are as follows:
wherein the blending proportion of the asphalt coke is 17% of the total amount of the dry materials, the balance is calcined coke, and the asphalt coke and the calcined coke are mixed to form the dry materials in percentage by mass;
(3) kneading for 30min, and keeping the temperature at 115 deg.C.
(4) Wet mixing, adding coal tar pitch with the mass of 15.5 percent of the dry material, mixing for 30min, and keeping the temperature at 160 ℃.
Example 3
A production method of prebaked anode by using pitch coke comprises the following steps:
(1) grinding the raw materials into powder, wherein the purity of the ground raw materials is 60 percent, and the brin value of the ground raw materials is 3800;
(2) the preparation method comprises the following steps of proportioning, wherein in the proportioning step, the components in percentage by mass are as follows:
wherein the blending proportion of the asphalt coke is 17% of the total amount of the dry materials, the balance is calcined coke, and the asphalt coke and the calcined coke are mixed to form the dry materials in percentage by mass;
(3) kneading for 35min, and keeping the temperature at 125 deg.C.
(4) Wet mixing, adding coal tar pitch with the mass of 15.5 percent of the dry material, mixing for 35min, and keeping the temperature at 164 ℃.
The following table shows the intrinsic index requirements of the asphalt coke and calcined coke used in the present invention.
TABLE 1 intrinsic indices of pitch coke and calcined coke used in the invention
The following two tables represent the performance data of the test anodes prepared according to the invention compared with the common anodes on the market:
TABLE 2 Performance data of the test anodes prepared according to the invention in comparison with conventional anodes on the market (1)
TABLE 3 Performance data of the test anodes prepared according to the invention in comparison with conventional anodes on the market (2)
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A production method of prebaked anode by using asphalt coke comprises four steps of grinding, batching, kneading and wet mixing, and is characterized in that asphalt coke is added as a raw material component of the prebaked anode in the batching step.
2. The method for producing the prebaked anode using the bituminous coke according to claim 1, wherein the blending ratio of the bituminous coke is 13.5 to 18.5% of the total amount of the dry material, and the balance is calcined coke, and the bituminous coke and the calcined coke are mixed to form the dry material in terms of mass percentage.
3. The method for producing an anode prebaked with pitch coke according to claim 1, wherein the blending ratio of the pitch coke is 17% by mass of the total amount of the dry materials.
4. The method for producing an anode prebaked with pitch coke as claimed in claim 1, wherein the purity of the raw material powder is 55-60% and the Boolean value of the raw material powder is 3300-3800.
5. The method for producing an anode prebaked with pitch coke according to claim 1, wherein the compounding step comprises the following components in percentage by mass:
6. the method for producing an anode prebaked with pitch coke according to claim 1, wherein the compounding step comprises the following components in percentage by mass:
7. the method as claimed in claim 1, wherein the mixing time is 30-35min and the temperature is 115-125 ℃ during the kneading step.
8. The method for producing a prebaked anode using pitch coke according to claim 1, wherein in the wet mixing step, coal pitch is added in an amount of 15.5% by mass of the dry material, and the mixture is mixed for 30 to 35 minutes while maintaining the temperature at 160 to 164 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011607923.5A CN112831804A (en) | 2020-12-30 | 2020-12-30 | Production method for prebaked anode by using asphalt coke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011607923.5A CN112831804A (en) | 2020-12-30 | 2020-12-30 | Production method for prebaked anode by using asphalt coke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112831804A true CN112831804A (en) | 2021-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011607923.5A Pending CN112831804A (en) | 2020-12-30 | 2020-12-30 | Production method for prebaked anode by using asphalt coke |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5980786A (en) * | 1982-10-29 | 1984-05-10 | Mitsubishi Keikinzoku Kogyo Kk | Manufacture of anode for aluminum electrolytic cell |
| CN101008093A (en) * | 2006-12-29 | 2007-08-01 | 中国铝业股份有限公司 | Preparation method of highly oxidation resistant prebaked anode for alumnium |
| CN101008092A (en) * | 2006-12-29 | 2007-08-01 | 中国铝业股份有限公司 | Prebaked charcoal anode powder control method for producing aluminum |
| CN101723357A (en) * | 2009-11-19 | 2010-06-09 | 任利华 | Production process of high-density carbon product |
| CN102839393A (en) * | 2012-07-26 | 2012-12-26 | 济南海川投资集团有限公司 | Method for using petroleum coke fine powder in preparation of prebaked anode used for aluminum electrolysis |
| CN103882471A (en) * | 2014-03-21 | 2014-06-25 | 天津锦美碳材科技发展有限公司 | Anode material for fluorine production and preparation method of anode material |
| CN105112941A (en) * | 2015-09-29 | 2015-12-02 | 中南大学 | Quick conductive gradient carbon anode and method for manufacturing same |
| CN107235728A (en) * | 2017-06-22 | 2017-10-10 | 索通发展股份有限公司 | A kind of technique of prebaked anode production energy-saving |
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| CN108221003A (en) * | 2018-02-12 | 2018-06-29 | 内蒙古霍煤通顺碳素有限责任公司 | A kind of novel optimization prebaked anode for aluminium electrolysis formula |
| CN109400163A (en) * | 2018-12-30 | 2019-03-01 | 山东圣泉新材料股份有限公司 | A kind of carbon anode and its preparation method and application |
| CN109778236A (en) * | 2019-03-07 | 2019-05-21 | 中国科学院山西煤炭化学研究所 | A kind of electrolgtic aluminium prebaked anode |
-
2020
- 2020-12-30 CN CN202011607923.5A patent/CN112831804A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5980786A (en) * | 1982-10-29 | 1984-05-10 | Mitsubishi Keikinzoku Kogyo Kk | Manufacture of anode for aluminum electrolytic cell |
| CN101008093A (en) * | 2006-12-29 | 2007-08-01 | 中国铝业股份有限公司 | Preparation method of highly oxidation resistant prebaked anode for alumnium |
| CN101008092A (en) * | 2006-12-29 | 2007-08-01 | 中国铝业股份有限公司 | Prebaked charcoal anode powder control method for producing aluminum |
| CN101723357A (en) * | 2009-11-19 | 2010-06-09 | 任利华 | Production process of high-density carbon product |
| CN102839393A (en) * | 2012-07-26 | 2012-12-26 | 济南海川投资集团有限公司 | Method for using petroleum coke fine powder in preparation of prebaked anode used for aluminum electrolysis |
| CN103882471A (en) * | 2014-03-21 | 2014-06-25 | 天津锦美碳材科技发展有限公司 | Anode material for fluorine production and preparation method of anode material |
| CN105112941A (en) * | 2015-09-29 | 2015-12-02 | 中南大学 | Quick conductive gradient carbon anode and method for manufacturing same |
| CN107235728A (en) * | 2017-06-22 | 2017-10-10 | 索通发展股份有限公司 | A kind of technique of prebaked anode production energy-saving |
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| CN108221003A (en) * | 2018-02-12 | 2018-06-29 | 内蒙古霍煤通顺碳素有限责任公司 | A kind of novel optimization prebaked anode for aluminium electrolysis formula |
| CN109400163A (en) * | 2018-12-30 | 2019-03-01 | 山东圣泉新材料股份有限公司 | A kind of carbon anode and its preparation method and application |
| CN109778236A (en) * | 2019-03-07 | 2019-05-21 | 中国科学院山西煤炭化学研究所 | A kind of electrolgtic aluminium prebaked anode |
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Application publication date: 20210525 |