CN107779911A - A kind of low-temperature electrolytes - Google Patents
A kind of low-temperature electrolytes Download PDFInfo
- Publication number
- CN107779911A CN107779911A CN201610718159.6A CN201610718159A CN107779911A CN 107779911 A CN107779911 A CN 107779911A CN 201610718159 A CN201610718159 A CN 201610718159A CN 107779911 A CN107779911 A CN 107779911A
- Authority
- CN
- China
- Prior art keywords
- low
- temperature
- temperature electrolytes
- alf
- electrolyte
- 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
- C25C3/18—Electrolytes
Abstract
A kind of low-temperature electrolytes, composition are by weight percentage：NaF 20 ~ 22%, AlF330 ~ 32%, CaF-23 ~ 5%, NaCl 1 ~ 3%, LiF 1 ~ 3%, MgF21 ~ 3%, LiCl 1 ~ 3%, MgCl21 ~ 3%, surplus Al2O3.The electrolyte of the present invention can have the function that the physical and chemical performance for improving cryolite-alumina liquation, reduce resistance loss, improve electric work efficiency, save electric energy, reduce cost.
Description
Technical field
The invention belongs to molten-salt electrolysis technology field, more particularly to a kind of low-temperature electrolytes.
Background technology
Aluminium electrolytic industry uses traditional electrolyte as Na always at present3AlF6-Al2O3, it is commonly incorporated into CaF2Or due to raw material
Bring calcium oxide into and generate CaF2；In order to control molecular proportion in electrolytic process（Na3AlF6In NaF and AlF3The amount of material it
Than）, generally add AlF3, by the molecular proportion control of electrolyte within the scope of certain, it is therefore an objective to and improve the property of electrolyte,
Mainly reduce liquidus temperature etc. and realize lower temperature electrolysis to reach the purpose of energy-conservation.
With excessive AlF3Addition, molecular proportion reduces, and the electrical conductivity of electrolyte can decline, resistance increase, so as to increase
Power consumption, there is considerable electric quantity consumption in electrolytic process on electrolyte resistance loss in itself, it directly influences aluminium
The power consumption of electrolysis production.Aluminium electroloysis scientific worker has carried out substantial amounts of research, has during which tested various chlorides, vulcanization
Thing, carbonate, sulfate, aluminate replace ice crystal, are difficult to be applied successfully in industry.
The content of the invention
For problem above, the present invention provides a kind of low-temperature electrolytes, and emphasis is that addition can increase electrolytic conductivity
Big electrolyte mixture, electrolyte additive package are NaCl and LiF, MgF2, LiCl or MgCl2Mixture, relatively low
Under electrolysis temperature, increase the electrical conductivity of electrolyte fused salt.
The present invention low-temperature electrolytes composition be by weight percentage：NaF 20 ~ 22%, AlF330 ~ 32%, CaF-2 3~
5%, NaCl 1 ~ 3%, LiF 1 ~ 3%, MgF21 ~ 3%, LiCl 1 ~ 3%, MgCl21 ~ 3%, surplus Al2O3。
Electrical conductivity when above-mentioned low-temperature electrolytes use is 2.15 ~ 2.20 S/cm.
A kind of application method of low-temperature electrolytes of the present invention is：
Using the low-temperature electrolytes of the present invention, it is placed in aluminium cell and carries out electrolysis procedure, electrolytic condition is：Temperature 800 ~ 910
DEG C, anodic current density is 0.9 ~ 0.95A/cm2, carry out 10 ~ 20h electrolysis application；As a result show, addition electrolyte mixing adds
After adding agent, current efficiency improves 0.5 ~ 0.7%.
It should be noted that sodium chloride has water imbibition, 4 ~ 6h is dried under the conditions of 350 ~ 400 DEG C using preceding, when in use
NaCl is kept to dry.
The electrolyte of the present invention selects alkali metal fluoride, alkali metal chloride, alkali earth metal fluoride or alkaline-earth metal
Chloride can have the function that the physical and chemical performance for improving cryolite-alumina liquation, reduce resistance as additive
Loss, electric work efficiency is improved, electric energy is saved, reduces cost.
Embodiment
MgCl in the present invention2Using preceding need by vacuum dehydration method take out the crystallization water.
Embodiment 1
Low-temperature electrolytes composition is by weight percentage：NaF 20%, AlF332%, CaF-25%, NaCl 3%, LiF 1%,
MgF23%, LiCl 1%, MgCl23%, surplus Al2O3；Electrical conductivity during use is 2.15S/cm；
Using the low-temperature electrolytes, it is placed in aluminium cell and carries out electrolysis procedure, electrolytic condition is：800 DEG C of temperature, anode current
Density is 0.9A/cm2, carry out 10h electrolysis application；As a result show that current efficiency improves 0.5%.
Embodiment 2
Low-temperature electrolytes composition is by weight percentage：NaF 21%, AlF331%, CaF-24%, NaCl 2%, LiF 2%,
MgF22%, LiCl 3%, MgCl21%, surplus Al2O3；Electrical conductivity during use is 2.17S/cm；
Using the low-temperature electrolytes, it is placed in aluminium cell and carries out electrolysis procedure, electrolytic condition is：860 DEG C of temperature, anode current
Density is 0.95A/cm2, carry out 15h electrolysis application；As a result show that current efficiency improves 0.6%.
Embodiment 3
Low-temperature electrolytes composition is by weight percentage：NaF 22%, AlF330%, CaF-23%, NaCl 1%, LiF 3%,
MgF21%, LiCl 2%, MgCl22%, surplus Al2O3；Electrical conductivity during use is 2.20 S/cm；
Using the low-temperature electrolytes, it is placed in aluminium cell and carries out electrolysis procedure, electrolytic condition is：910 DEG C of temperature, anode current
Density is 0.93A/cm2, carry out 20h electrolysis application；As a result show that current efficiency improves 0.7%.
Claims (2)
1. a kind of low-temperature electrolytes, it is characterised in that composition is by weight percentage：NaF 20 ~ 22%, AlF330 ~ 32%,
CaF23 ~ 5%, NaCl 1 ~ 3%, LiF 1 ~ 3%, MgF21 ~ 3%, LiCl 1 ~ 3%, MgCl21 ~ 3%, surplus Al2O3。
2. the low-temperature electrolytes according to right wants 1, it is characterised in that electrical conductivity during use is 2.15 ~ 2.20 S/cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610718159.6A CN107779911A (en) | 2016-08-25 | 2016-08-25 | A kind of low-temperature electrolytes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610718159.6A CN107779911A (en) | 2016-08-25 | 2016-08-25 | A kind of low-temperature electrolytes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107779911A true CN107779911A (en) | 2018-03-09 |
Family
ID=61388599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610718159.6A Pending CN107779911A (en) | 2016-08-25 | 2016-08-25 | A kind of low-temperature electrolytes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107779911A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108950603A (en) * | 2018-08-31 | 2018-12-07 | 营口忠旺铝业有限公司 | A kind of method for electrolyzing aluminum improving electrolyte dissolution degree |
| CN108950604A (en) * | 2018-08-31 | 2018-12-07 | 营口忠旺铝业有限公司 | A kind of aluminum electrolysis technology |
| CN110289449A (en) * | 2019-06-04 | 2019-09-27 | 江西力能新能源科技有限公司 | A kind of electrolyte and its application on low temperature lithium battery |
-
2016
- 2016-08-25 CN CN201610718159.6A patent/CN107779911A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108950603A (en) * | 2018-08-31 | 2018-12-07 | 营口忠旺铝业有限公司 | A kind of method for electrolyzing aluminum improving electrolyte dissolution degree |
| CN108950604A (en) * | 2018-08-31 | 2018-12-07 | 营口忠旺铝业有限公司 | A kind of aluminum electrolysis technology |
| CN110289449A (en) * | 2019-06-04 | 2019-09-27 | 江西力能新能源科技有限公司 | A kind of electrolyte and its application on low temperature lithium battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| NO20052377L (en) | Cells with metal-based anodes for aluminum production | |
| CN107779911A (en) | A kind of low-temperature electrolytes | |
| WO2011072546A1 (en) | Electrolyte used in aluminum electrolysis | |
| CN105112963B (en) | A kind of method that utilization fused salt electrodeposition process prepares metallic aluminium and its alloy | |
| CN104775137A (en) | Method for preparing aluminum-samarium interalloy through liquid-state cathode salt fusion electrolysis method | |
| CN101285198B (en) | Method for electrolyzing aluminum | |
| CN107557817A (en) | The method of electrolytic preparation aluminium-scandium alloy | |
| NO20160141A1 (en) | Electrolyte for producing aluminum by molten electrolysis | |
| CN101255574A (en) | Potassium salt system electrolyte for aluminium electrolysis | |
| CN107541753B (en) | A method of removing Hull cell is containing lithium in lithium electrolyte | |
| CN102745704A (en) | Method for producing zirconium boride and synchronously outputting cryolite | |
| CN101713082A (en) | Low-temperature aluminum electrolysis process and electrolyte | |
| CN102703932B (en) | Electrolyte replenishment system in aluminum electrolysis process and preparation method thereof | |
| CN101255575A (en) | Electrolyte for aluminium electrolysis | |
| CN101386996B (en) | High conductivity low-temperature electrolytes for aluminum electrolysis and use method thereof | |
| CN101698949A (en) | electrolyte for aluminium electrolysis | |
| CN103484897B (en) | A kind of electrolgtic aluminium electrolyte and use this electrolytical electrolysis process | |
| CN106191927A (en) | A kind of low-temperature molten salt system used for aluminium electrolysis and using method thereof | |
| KR101801453B1 (en) | Electrolyte used for aluminum electrolysis and electrolysis process using the electrolyte | |
| CN108118366A (en) | A kind of method of alumina dissolution speed in quickening aluminium cell | |
| CN103834970A (en) | Method for preparing magnesium-zinc intermediate alloy through molten salt electrolysis | |
| CN107630234B (en) | A method of scandium bearing master alloy is prepared using villaumite oxide system molten-salt electrolysis | |
| CN103132108B (en) | Method for preparing heat resistance magnesia-alumina-neodymium alloy through electrolysis in fused salt system | |
| CN103849898A (en) | Aluminum electrolysis production method | |
| CN108950603A (en) | A kind of method for electrolyzing aluminum improving electrolyte dissolution degree |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180309 |
|
| WD01 | Invention patent application deemed withdrawn after publication |