CN107215855A - A kind of equipment for the preparation method and its use for encrypting anode carbon block - Google Patents
A kind of equipment for the preparation method and its use for encrypting anode carbon block Download PDFInfo
- Publication number
- CN107215855A CN107215855A CN201710471029.1A CN201710471029A CN107215855A CN 107215855 A CN107215855 A CN 107215855A CN 201710471029 A CN201710471029 A CN 201710471029A CN 107215855 A CN107215855 A CN 107215855A
- Authority
- CN
- China
- Prior art keywords
- anode carbon
- baked
- carbon blocks
- anode
- carbon block
- Prior art date
- 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.)
- Pending
Links
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
- C25C3/125—Anodes based on carbon
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/10—Solid density
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/32—Thermal properties
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/40—Electric properties
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The present invention provides a kind of preparation method for encrypting anode carbon block, comprises the following steps：The first step：Pre-baked anode carbon blocks are put into impregnating agent and impregnated；Second step：Pre-baked anode carbon blocks by dipping are heated, the pre-baked anode carbon blocks after flue gas and heat treatment are obtained；Flue gas is discharged after smoke eliminator is handled；3rd step：Pre-baked anode carbon blocks after heat treatment are handled using aluminium cell, obtain encrypting anode carbon block.Using the preparation method of the present invention, step is simplified, and can obtain increase anode volume density, reduction anode drop, the encryption anode carbon block for extending the service life of anode, playing a part of preheating anode and improving the combination property of anode carbon block.Invention additionally discloses the equipment that a kind of above-mentioned preparation method is used, including high-pressure impregnation tank, heat-treatment furnace, smoke eliminator and aluminium cell, part is readily available, can apply to former workshop, substantially reduce equipment investment cost.
Description
Technical field
The present invention relates to technical field of non-ferrous metallurgy, especially, it is related to a kind of making of encryption anode carbon block used for aluminium electrolysis
Method and its equipment of use.
Background technology
Prebaked anode production is one of important procedure in modern aluminium electrolysis process, the wherein Functionality, quality and appealing design of pre-baked anode carbon blocks
It is bad, groove life is not only influenceed, shortens the overhaul life, and directly affects a ton aluminium anodes consumption.Particularly Large Copacity electrolytic cell pair
The requirement of carbon anode quality is tightened up.The stable, pre-baked anode carbon blocks of high-quality are that large scale electrolytic cell normally produces, obtains advanced skill
The important guarantee of art economic indicator is also each electrolytic aluminium factory current strengthening, improve the key issue that production capacity must be solved.
Pre-baked anode carbon blocks are aggregate using petroleum coke, and pitch is adhesive, due to coal tar pitch one in roasting process
Gas effusion is resolved into, another part coking is into pitch coke.The volume of the pitch coke of production is far smaller than the body that raw material occupies
Product, forms the Minute pores of many irregular and pore size not etc. so that pre-baked anode carbon blocks density in interiors of products
Decline, anode drop increases, anode drop rises, mechanical strength is reduced, oxidation rate at a certain temperature is accelerated, corrosion-resistant
Property also degenerate, gas or liquid are easier infiltration, therefore, a kind of encryption anode technology of exploitation has great importance.
Prebaked anode preheating has very active influence to electrolytic cell operating condition, and it can effectively reduce anode pressure
Drop, shortens anode total current ON time, strengthens electrolytic cell stability, and the heat of groove is shaken effect, reduction electrolytic cell heat waste in buffering
Lose.Anode preheating method preheating temperature existing at present is relatively low (50 DEG C -300 DEG C), and the pre-heat effect that can be obtained is very limited, institute
To develop a kind of anode preheating technology of high preheating temperature very necessary.
The content of the invention
The first object of the present invention is that anode volume density, reduction anode drop, extension anode can be increased by providing one kind
Service life, can play a part of preheat anode and improve anode carbon block combination property encryption anode carbon block making
Method, concrete technical scheme is：
A kind of preparation method for encrypting anode carbon block, comprises the following steps：
The first step：Pre-baked anode carbon blocks are put into impregnating agent and impregnated；
Second step：Pre-baked anode carbon blocks by dipping are heated, it is pre- after obtaining flue gas and being heat-treated
Roast anode carbon block；Flue gas is discharged after smoke eliminator is handled；
3rd step：Pre-baked anode carbon blocks after heat treatment are handled using aluminium cell, obtain encrypting anode carbon block.
Preferred in above technical scheme, the first step is specifically：Pre-baked anode carbon blocks are put into high-pressure impregnation tank
Impregnating agent impregnated, the impregnating agent is at least one of coal tar pitch, coal tar and resin；
Either, the impregnating agent is that the progress of at least one of carbon dust and coal tar pitch, coal tar and resin mixes shape
Into mixture.
Preferred in above technical scheme, the impregnating agent that pre-baked anode carbon blocks are put into high-pressure impregnation tank is soaked
Stain specifically includes following steps：
Step 1.1, the surface for clearing up pre-baked anode carbon blocks；
Step 1.2, pre-baked anode carbon blocks are inserted to high-pressure impregnation tank, 18-24 is preheated under the conditions of 280 DEG C -330 DEG C small
When；Cover is then shut off, is vacuumized, negative pressure is 0.09-0.094Mpa in tank；
Step 1.3, into high-pressure impregnation tank impregnating agent is inserted, be heated to 160 DEG C -180 DEG C；
Step 1.4, with compressed air impregnating agent liquid level is pressurizeed, pressurizeed under 1.55-1.6MPa pressure condition
3-5 hours, the temperature in high-pressure impregnation tank was 150 DEG C -180 DEG C, and impregnating agent liquid level is higher than the top 10- of pre-baked anode carbon blocks
20mm；
After the completion of step 1.5, pressurization, impregnating agent is pushed back into basin, cooling water cooling pre-baked anode carbon blocks are put into.
It is preferred in above technical scheme, it will be heated in the second step by the pre-baked anode carbon blocks of dipping
Specifically：Pre-baked anode carbon blocks by dipping are inserted in heat-treatment furnace and heated, heating process specifically includes the
One heating period and the second heating period, the first heating period be by 35-42 hours by temperature by room temperature be increased to 245 DEG C-
255℃；Second heating period was that temperature is increased into 645 DEG C -655 DEG C by 245 DEG C -255 DEG C by 78-85 hours.
Preferred in above technical scheme, the heat-treatment furnace is tunnel cave, roaster or induction heater；The flue gas
Purifier is used to the pernicious gas in flue gas being converted into innocuous gas.
It is preferred in above technical scheme, handled specifically using aluminium cell in the 3rd step：Utilize aluminium electricity
Hot environment in solution groove is heated to pre-baked anode carbon blocks, and the temperature of part reaches 600 DEG C -700 on pre-baked anode carbon blocks
DEG C, the temperature of its underpart reaches 890 DEG C -910 DEG C.
Apply the technical scheme of the present invention, effect is：
1st, the present invention improves anode volume close using the combination of impregnation process, heating and aluminium cell processing
Degree not only extension groove life, overhaul life, and directly reduction ton aluminium carbon anode consumption, particularly it can meet Large Copacity electrolytic cell
Requirement to carbon anode quality.Density increase, mechanical strength uprise, make anode consume in aluminium electrolysis process slow down, anode sky
Gas oxygenation efficiency, aluminium electroloysis side reaction and dust rate are reduced, and the increase of anode conducting area, power consumption can also reduced, while also extending
Anode anode change cycle, reduces the workload of electrolysis workman.
2nd, the method for taking coking in electrolytic bath, saves the cost for being largely used to coking impregnating agent.
3rd, the purpose of anode preheating is realized indirectly, makes groove on anode (anode being heat-treated is put into electrolytic cell) temperature
Degree reaches more than 600 DEG C, effectively reduces anode drop, shortens anode total current ON time, strengthens electrolytic cell stability, buffering
The heat of upper groove is shaken effect, reduces electrolytic cell heat loss.
The second object of the present invention is to disclose the equipment that a kind of above-mentioned preparation method is used, and is specifically included for prebake
High-pressure impregnation tank that anode carbon block is impregnated, for pre-baked anode carbon blocks are heated heat-treatment furnace, for pair
The waste gas smoke eliminator purified and the aluminium cell that pre-baked anode carbon blocks are handled of heat-treatment furnace discharge；
It is connected with each other between high-pressure impregnation tank, heat-treatment furnace and aluminium cell three or separate setting.
Preferred in above technical scheme, the heat-treatment furnace is tunnel cave, roaster or induction heater.
Using the equipment of the present invention, part is readily available, and be able to can be added on the basis of original workshop, it is not necessary to weight
Workshop is newly opened, cost is reduced.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to accompanying drawings, the present invention is further detailed explanation.
Brief description of the drawings
The accompanying drawing for constituting the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the preparation method element of encryption anode carbon block in embodiment 1 using the annexation schematic diagram of equipment；
1st, pre-baked anode carbon blocks, 2, high-pressure impregnation tank, 3, impregnating agent, 4, heat-treatment furnace, 5, smoke eliminator, 6, aluminium electricity
Solve groove, 7, encryption anode carbon block.
Embodiment
Embodiments of the invention are described in detail below in conjunction with accompanying drawing, but the present invention can be limited according to claim
Fixed and covering multitude of different ways is implemented.
Embodiment 1：
A kind of preparation method for encrypting anode carbon block, its equipment used are as shown in figure 1, be specifically：Including for pre-
Roasting anode carbon block impregnated high-pressure impregnation tank, for pre-baked anode carbon blocks are heated heat-treatment furnace, be used for
The waste gas smoke eliminator purified discharged to heat-treatment furnace and the aluminium electroloysis that pre-baked anode carbon blocks are handled
Groove, it is separate between the high-pressure impregnation tank, heat-treatment furnace and aluminium cell three to set.
Preparation method specifically includes following steps：
The first step：Impregnated in the impregnating agent that pre-baked anode carbon blocks are put into high-pressure impregnation tank, be specifically：A, cleaning
The surface of pre-baked anode carbon blocks；B, pre-baked anode carbon blocks are inserted to high-pressure impregnation tank, preheated 20 hours under the conditions of 300 DEG C；So
After close cover, vacuumize, in tank negative pressure be 0.092Mpa；C, into high-pressure impregnation tank impregnating agent is inserted, be heated to 170 DEG C；
D, with compressed air impregnating agent liquid level is pressurizeed, pressurizeed 4 hours under 1.58MPa pressure condition, in high-pressure impregnation tank
Temperature be 160 DEG C, impregnating agent liquid level (makes impregnating agent be sufficiently submerged in anode stomata higher than the top 15mm of pre-baked anode carbon blocks
In)；After the completion of e, pressurization, impregnating agent is pushed back into basin, the flue gas in cooling water cooling pre-baked anode carbon blocks, cooling procedure is put into
Cooled water absorbs.
Second step：Pre-baked anode carbon blocks by dipping are heated, it is pre- after obtaining flue gas and being heat-treated
Roast anode carbon block；Flue gas is discharged after smoke eliminator is handled；Specifically：Pre-baked anode carbon blocks by dipping are hung
Enter in heat-treatment furnace and heated, heating process specifically includes the first heating period and the second heating period, the first heating
Stage is that temperature is increased into 250 DEG C by 25 DEG C by 40 hours；Second heating period be by 80 hours by temperature by 250 DEG C
It is increased to 650 DEG C.Smoke eliminator is used for the pernicious gas in flue gas occurring oxidation reaction generation innocuous gas, obtains nothing
Harmful discharge gas, which is discharged, (to be substantially C, H light compounds in flue gas, passes through in smoke eliminator and oxygen mix
H is generated after burning2O and CO2；More than 95% is H in discharge gas2O and CO2Mixed gas).
3rd step：Pre-baked anode carbon blocks after heat treatment are handled using aluminium cell, are specifically：Using in groove
Hot environment is heated to pre-baked anode carbon blocks, and the temperature of part reaches 650 DEG C, the temperature of its underpart on pre-baked anode carbon blocks
Degree (consistent with the temperature of the electrolyte in electrolytic cell) reaches 900 DEG C；Obtain encrypting anode carbon block.
The impregnating agent is at least one of coal tar pitch, coal tar and resin；Either, the impregnating agent is carbon dust
The mixture being mixed to form with least one of coal tar pitch, coal tar and resin.
The heat-treatment furnace is tunnel cave, roaster or induction heater.
Encryption anode carbon block obtained by the present embodiment and the performance comparision of gained common anode carbon block in the prior art are shown in Table
2。
Embodiment 2-4：
Embodiment 2-4 and the difference of embodiment 1 are table 1.
Comparative example 1-2：
Comparative example 1-2 and the difference of embodiment 1 are table 1.
The embodiment 1-4 of table 1 parametric statistics table
The performance of encryption anode carbon block obtained by embodiment 2-4 refers to table 2.
The embodiment 1-4 of table 2, comparative example 1-2 and common anode carbon block physical and chemical index contrast table
As can be seen from Table 1：
The every physical and chemical index of encryption anode carbon block is superior to common prebake sun obtained by (embodiment 1-4 in such as table 2) of the invention
Pole carbon block, most notably：Resistivity 12 μ Ω .m low compared with common anode or so, air reaction residual is high compared with common anode
10.51%, CO2Reaction remains high by 2.72%, the high 0.116g/cm of bulk density3, air permeability reduces 0.86nPm.Encryption
The higher bulk density of anode carbon block makes the activity of pitch coke and petroleum coke reach unanimity, so as to reduce the speed of selective oxidation
Degree, reduces the voltage drop of anode carbon block, extends anode usage cycles.
Compared by embodiment 1-4 with comparative example 1-2 (parameter selects too high or too low), using the present invention's
The combination of technological parameter has important influence to the index of the encryption anode carbon block of the present invention, it is therefore preferable that presently disclosed
Relevant parameter.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (8)
1. a kind of preparation method for encrypting anode carbon block, it is characterised in that：Comprise the following steps：
The first step：Pre-baked anode carbon blocks are put into impregnating agent and impregnated；
Second step：Pre-baked anode carbon blocks by dipping are heated, the prebake sun after flue gas and heat treatment is obtained
Pole carbon block；Flue gas is discharged after smoke eliminator is handled；
3rd step：Pre-baked anode carbon blocks after heat treatment are handled using aluminium cell, obtain encrypting anode carbon block.
2. the preparation method of encryption anode carbon block according to claim 1, it is characterised in that：The first step is specifically：
The impregnating agent that pre-baked anode carbon blocks are put into high-pressure impregnation tank is impregnated, the impregnating agent be coal tar pitch, coal tar and
At least one of resin；
Either, the impregnating agent is what at least one of carbon dust and coal tar pitch, coal tar and resin were mixed to form
Mixture.
3. the preparation method of encryption anode carbon block according to claim 2, it is characterised in that：It is described by pre-baked anode carbon blocks
The impregnating agent being put into high-pressure impregnation tank carries out dipping and specifically includes following steps：
Step 1.1, the surface for clearing up pre-baked anode carbon blocks；
Step 1.2, pre-baked anode carbon blocks are inserted to high-pressure impregnation tank, preheated 18-24 hours under the conditions of 280 DEG C -330 DEG C；So
After close cover, vacuumize, in tank negative pressure be 0.09-0.094Mpa；
Step 1.3, into high-pressure impregnation tank impregnating agent is inserted, be heated to 160 DEG C -180 DEG C；
Step 1.4, with compressed air impregnating agent liquid level is pressurizeed, the 3-5 that pressurizeed under 1.55-1.6MPa pressure condition is small
When, the temperature in high-pressure impregnation tank is 150 DEG C -180 DEG C, and impregnating agent liquid level is higher than the top 10-20mm of pre-baked anode carbon blocks；
After the completion of step 1.5, pressurization, impregnating agent is pushed back into basin, cooling water cooling pre-baked anode carbon blocks are put into.
4. the preparation method of encryption anode carbon block according to claim 1, it is characterised in that：It will pass through in the second step
The pre-baked anode carbon blocks of dipping are heated specifically：Pre-baked anode carbon blocks by dipping are inserted in heat-treatment furnace
Row heats, and heating process specifically includes the first heating period and the second heating period, and the first heating period was by 35-42
Temperature is increased to 245 DEG C -255 DEG C by hour by room temperature；Second heating period be by 78-85 hours by temperature by 245 DEG C-
255 DEG C are increased to 645 DEG C -655 DEG C.
5. the preparation method of encryption anode carbon block according to claim 4, it is characterised in that：The heat-treatment furnace is tunnel
Kiln, roaster or induction heater；The smoke eliminator is used to the pernicious gas in flue gas being converted into innocuous gas.
6. the preparation method of encryption anode carbon block according to claim 1, it is characterised in that：Aluminium is used in 3rd step
Electrolytic cell is handled specifically：Pre-baked anode carbon blocks are heated using the hot environment in aluminium cell, prebaked anode
The temperature of part reaches 600 DEG C -700 DEG C in carbon block, and the temperature of its underpart reaches 890 DEG C -910 DEG C.
7. the equipment that a kind of preparation method of encryption anode carbon block as claimed in any one of claims 1 to 6 is used, it is special
Levy and be：Including the high-pressure impregnation tank for being impregnated to pre-baked anode carbon blocks, for being heated to pre-baked anode carbon blocks
The heat-treatment furnace of processing, for the smoke eliminator that is purified to the waste gas that heat-treatment furnace is discharged and to pre-baked anode carbon
The aluminium cell that block is handled；
It is connected with each other between the high-pressure impregnation tank, heat-treatment furnace and aluminium cell three or separate setting.
8. equipment according to claim 7, it is characterised in that：The heat-treatment furnace is that tunnel cave, roaster or sensing add
Hot stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710471029.1A CN107215855A (en) | 2017-06-20 | 2017-06-20 | A kind of equipment for the preparation method and its use for encrypting anode carbon block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710471029.1A CN107215855A (en) | 2017-06-20 | 2017-06-20 | A kind of equipment for the preparation method and its use for encrypting anode carbon block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107215855A true CN107215855A (en) | 2017-09-29 |
Family
ID=59949978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710471029.1A Pending CN107215855A (en) | 2017-06-20 | 2017-06-20 | A kind of equipment for the preparation method and its use for encrypting anode carbon block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107215855A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109518230A (en) * | 2019-01-21 | 2019-03-26 | 中南大学 | A kind of encryption anode carbon block impregnating agent and preparation method thereof |
| CN109706484A (en) * | 2019-01-24 | 2019-05-03 | 中南大学 | A kind of dipping systems and dipping method |
| CN112376081A (en) * | 2020-11-12 | 2021-02-19 | 奉新赣锋锂业有限公司 | Graphite anode dipping device for molten salt electrolysis of metal lithium and dipping method thereof |
| CN113912421A (en) * | 2021-10-28 | 2022-01-11 | 湖南国发控股有限公司 | Formula of flexible graphite impregnant and preparation and application processes thereof |
| CN114031421A (en) * | 2021-10-28 | 2022-02-11 | 湖南国发控股有限公司 | Formula of carbon material impregnant and preparation and application processes thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52119615A (en) * | 1976-04-02 | 1977-10-07 | Toyo Carbon Co | Anode carbon blocks for aluminum electrolytic cells |
| CN101250724A (en) * | 2007-11-28 | 2008-08-27 | 温县东方炭素有限公司 | Method for producing one-dipping two-baking anode carbon block |
| CN103194771A (en) * | 2013-04-22 | 2013-07-10 | 中国矿业大学 | Method for improving antioxidation property of carbon anode for aluminum |
| CN104099640A (en) * | 2014-07-29 | 2014-10-15 | 长沙中大时代电子科技发展有限公司 | Online oxidation prevention method for aluminum electrolytic bath anode |
| CN106283117A (en) * | 2016-08-08 | 2017-01-04 | 广西强强碳素股份有限公司 | A kind of preparation method of anode carbon block for electrolytic aluminum |
-
2017
- 2017-06-20 CN CN201710471029.1A patent/CN107215855A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52119615A (en) * | 1976-04-02 | 1977-10-07 | Toyo Carbon Co | Anode carbon blocks for aluminum electrolytic cells |
| CN101250724A (en) * | 2007-11-28 | 2008-08-27 | 温县东方炭素有限公司 | Method for producing one-dipping two-baking anode carbon block |
| CN103194771A (en) * | 2013-04-22 | 2013-07-10 | 中国矿业大学 | Method for improving antioxidation property of carbon anode for aluminum |
| CN104099640A (en) * | 2014-07-29 | 2014-10-15 | 长沙中大时代电子科技发展有限公司 | Online oxidation prevention method for aluminum electrolytic bath anode |
| CN106283117A (en) * | 2016-08-08 | 2017-01-04 | 广西强强碳素股份有限公司 | A kind of preparation method of anode carbon block for electrolytic aluminum |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109518230A (en) * | 2019-01-21 | 2019-03-26 | 中南大学 | A kind of encryption anode carbon block impregnating agent and preparation method thereof |
| CN109706484A (en) * | 2019-01-24 | 2019-05-03 | 中南大学 | A kind of dipping systems and dipping method |
| CN112376081A (en) * | 2020-11-12 | 2021-02-19 | 奉新赣锋锂业有限公司 | Graphite anode dipping device for molten salt electrolysis of metal lithium and dipping method thereof |
| CN113912421A (en) * | 2021-10-28 | 2022-01-11 | 湖南国发控股有限公司 | Formula of flexible graphite impregnant and preparation and application processes thereof |
| CN114031421A (en) * | 2021-10-28 | 2022-02-11 | 湖南国发控股有限公司 | Formula of carbon material impregnant and preparation and application processes thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107215855A (en) | A kind of equipment for the preparation method and its use for encrypting anode carbon block | |
| CN100580146C (en) | Method for producing one-dipping two-baking anode carbon block | |
| CN103484896B (en) | A kind of electrolgtic aluminium low cost carbon annode and preparation method thereof | |
| JP5658806B2 (en) | Method for producing titanium metal using titanium-containing material | |
| CN110791780B (en) | Method for preparing prebaked anode by using aluminum electrolysis waste cathode carbon blocks | |
| CN101979684B (en) | Process for recovering zinc from hot-dip coating zinc ash | |
| CN103449401B (en) | Preparation method of high-graphite cold ramming paste | |
| CN105112938B (en) | A kind of method of volatilization defluorinate in aluminium electrolytic charcoal material | |
| CN108640681A (en) | A kind of preparation method of special graphite carbon material | |
| CN101008093A (en) | Preparation method of highly oxidation resistant prebaked anode for alumnium | |
| CN109518230A (en) | A kind of encryption anode carbon block impregnating agent and preparation method thereof | |
| CN100494507C (en) | High-density semi-graphite cathode carbon block and method for producing same | |
| CN109778236A (en) | A kind of electrolgtic aluminium prebaked anode | |
| CN109133620A (en) | Utilize the method for electrolytic cell waste residue production glassware | |
| CN103880441A (en) | Microporous lightweight corundum refractory aggregate and preparation method thereof | |
| CN104341154A (en) | Cathode graphite material used for electrolysis | |
| CN104099634B (en) | The preparation method of vanadium nitride | |
| CN103936333B (en) | A kind of aluminium electrolysis cathode roasting and start-up course high-temperature oxidation resistant coating and preparation method thereof | |
| CN108863369A (en) | A kind of environment-friendly type graphitization product and its production method | |
| CN106283117B (en) | A kind of preparation method of anode carbon block for electrolytic aluminum | |
| CN102951914A (en) | Electrode paste produced with industrial waste carbon material and preparation method thereof | |
| CN100480431C (en) | Production process for graphitized cathode | |
| CN101694003A (en) | Component of hard graphitizing cathode carbon block and method for producing same | |
| CN103266332B (en) | A kind of modified prebaked carbon anode preparation method of Mg-containing additive | |
| CN102290141A (en) | Method for producing closed paste with waste carbon anode green blocks |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170929 |