CN109368758A - The inorganic agent of fluoride waste in a kind of recovery processing of cathode carbon pieces - Google Patents
The inorganic agent of fluoride waste in a kind of recovery processing of cathode carbon pieces Download PDFInfo
- Publication number
- CN109368758A CN109368758A CN201811490423.0A CN201811490423A CN109368758A CN 109368758 A CN109368758 A CN 109368758A CN 201811490423 A CN201811490423 A CN 201811490423A CN 109368758 A CN109368758 A CN 109368758A
- Authority
- CN
- China
- Prior art keywords
- recovery processing
- cathode carbon
- inorganic agent
- fluoride waste
- carbon pieces
- 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
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/583—Treatment of water, waste water, or sewage by removing specified dissolved compounds by removing fluoride or fluorine compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
- C02F2101/14—Fluorine or fluorine-containing compounds
Abstract
The invention discloses the inorganic agents of fluoride waste in a kind of recovery processing of cathode carbon pieces, are mainly formulated by following raw material: aluminium base solution, sodium salt, and are by weight aluminium base solution: sodium salt=10-100:5-20.Fluorine removing rate not only can be improved in inorganic agent through the invention, but also improves fluorine removal treating capacity, improves the purity that ice crystal generates, and processing cost is low, can be realized the scale processing of fluoride waste in cathode carbon pieces recovery processing.
Description
Technical field
The present invention relates to the inorganic agents of fluoride waste in a kind of recovery processing of cathode carbon pieces, belong to waste cathode carbon block recycling skill
Art field.
Background technique
During Aluminum Electrolysis Production, every 3-6 is replaced or is overhauled to electrolytic cell, and electrolytic cell replacement or maintenance generate
A large amount of solid waste, the waste material are either stacked or are filled, and all can bring pollution to surrounding air, water source, soil, simultaneously
Also result in the waste of resource.According to statistics, during Aluminum Electrolysis Production, 10,000 tons of aluminium of every production, electrolytic cell replacement or maintenance are generated
Solid waste in about 100 tons of waste and old cathode carbon block or so, the annual electrolytic aluminium in China production generate waste and old cathode carbon block amount
About 25 tons or more.
It is detected according to " hazardous waste judging standard leaching characteristic identification " (GB 5085.3-2007), cathode carbon pieces master
Charcoal in ingredient is wanted to account for 50% or so, fluoride salt accounts for 30%(, and wherein soluble fluoride accounts for 25%, soluble hydrogenation object 0.02%).Cathode
It is poisonous and harmful that hydrolysis generation hydrogen fluoride, hydrogen cyanide, ammonia etc. can occur for carbon block chance water, and the liquid reacted is then highly basic
The toxic liquids such as property fluorochemical, hydride.
Currently, Some Enterprises recycle above-mentioned waste and old cathode carbon block, and alkali leaching method for floating is one such time
Receiving method leaches waste and old cathode with NaOH solution under heating stirring adjusting, leached mud is handled using floatation
To purity be 95% or more charcoal and purity be 95% electrolyte, leachate is reacted with hydrochloric acid obtains purer ice crystal, and soaks
Out waste liquid and repeatedly the flotation waste water bleaching powder processing after circulation decompose and cyanide and recycle calcirm-fluoride.The side of this recycling charcoal
Formula, fluoride ion about 15g/L in flotation waste water, and a small amount of floating agent is had, bleaching powder handles the way of recycling of waste water,
The concentration of its treated fluorine ion is still above 100mg/L, and the calcium fluoride precipitate difficulty formed in water is precipitated.
Summary of the invention
In view of the deficiency of the prior art, the object of the present invention is to provide contain in a kind of recovery processing of cathode carbon pieces
The inorganic agent of fluorine waste water improves additional economic benefit to reduce pollution.
To achieve the above object, the technical solution adopted by the present invention is that: cathode carbon pieces recovery processing in fluoride waste place
Manage agent, which is characterized in that be mainly formulated by following raw material: aluminium base solution, sodium salt.
Preferably, each raw material dosage matches in the inorganic agent of fluoride waste in above-mentioned cathode carbon pieces recovery processing, with weight
It is calculated as, aluminium base solution: sodium salt=10-100:5-20.
Preferably, above-mentioned aluminium base solution is the solid state hydrogen alumina dissolution by 55-75 parts by weight in 100 parts of acid solutions,
And 0.8-20h is stirred after the additive of 5-8 parts by weight is added, while being heated to 70-100 DEG C, then stand 2-4h, to be made.
Preferably, above-mentioned acid solution is the hydrochloric acid solution that concentration is 30-60%, and additive is light rare earth.
Preferably, above-mentioned sodium salt is that one or both of sodium carbonate, sodium chloride mix in any proportion.
Compared with prior art, the beneficial effect that the present invention has is: inorganic agent through the invention not only can be improved
Fluorine removing rate (improves 5% or so), and improves fluorine removal treating capacity (treated, and fluorinated volume is lower than 90mg/L), improves ice crystal
The purity (about 96% or so) that stone generates, and processing cost is low, can be realized the rule of fluoride waste in cathode carbon pieces recovery processing
Modelling processing.
Specific embodiment
Presently in connection with specific embodiment, next the invention will be further elaborated.
Embodiment one
The inorganic agent of fluoride waste, is mainly formulated by following raw material: aluminium base in the cathode carbon pieces recovery processing of the present embodiment
Solution, sodium salt, and consumption proportion are by weight aluminium base solution: sodium salt=100:20.
Above-mentioned aluminium base solution is the solid state hydrogen alumina dissolution by 55 parts by weight in the acid solution of 100 parts by weight, and is added
15h is stirred after entering the additive of 8 parts by weight, while being heated to 70-80 DEG C, then stand 4h, to be made.
Above-mentioned acid solution is the hydrochloric acid solution that concentration is 50%, and additive is light rare earth.
Above-mentioned sodium salt is sodium carbonate.
Embodiment two
The inorganic agent of fluoride waste, is mainly formulated by following raw material: aluminium base in the cathode carbon pieces recovery processing of the present embodiment
Solution, sodium salt, and consumption proportion are by weight aluminium base solution: sodium salt=50:5.
Above-mentioned aluminium base solution is the solid state hydrogen alumina dissolution by 75 parts by weight in the acid solution of 100 parts by weight, and is added
1h is stirred after entering the additive of 5 parts by weight, while being heated to 90-100 DEG C, then stand 2-4h, to be made.
Above-mentioned acid solution is the hydrochloric acid solution that concentration is 60%, and additive is light rare earth.
Above-mentioned sodium salt be sodium carbonate, two kinds in sodium chloride mix in any proportion.
Inorganic agent of the invention is to carry out mixing recycling with the fluoride waste through settling.
Claims (5)
1. the inorganic agent of fluoride waste in a kind of recovery processing of cathode carbon pieces, which is characterized in that mainly prepared by following raw material and
At: aluminium base solution, sodium salt.
2. the inorganic agent of fluoride waste in cathode carbon pieces recovery processing according to claim 1, which is characterized in that above-mentioned yin
Each raw material dosage proportion in the inorganic agent of fluoride waste, is by weight aluminium base solution: sodium salt=10- in the recovery processing of pole carbon block
100:5-20。
3. the inorganic agent of fluoride waste in cathode carbon pieces recovery processing according to claim 2, which is characterized in that above-mentioned aluminium
Based sols are and to stir 0.8-20h after additive is added, while being heated to 70- by solid state hydrogen alumina dissolution in acid solution
100 DEG C, then 2-4h is stood, to be made.
4. the inorganic agent of fluoride waste in cathode carbon pieces recovery processing according to claim 3, which is characterized in that above-mentioned acid
Solution is the hydrochloric acid solution that concentration is 30-60%, and additive is light rare earth.
5. the inorganic agent of fluoride waste, feature exist in cathode carbon pieces recovery processing according to claim 1 or 2 or 3 or 4
In above-mentioned sodium salt is that one or both of sodium carbonate, sodium chloride mix in any proportion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811490423.0A CN109368758A (en) | 2018-12-07 | 2018-12-07 | The inorganic agent of fluoride waste in a kind of recovery processing of cathode carbon pieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811490423.0A CN109368758A (en) | 2018-12-07 | 2018-12-07 | The inorganic agent of fluoride waste in a kind of recovery processing of cathode carbon pieces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109368758A true CN109368758A (en) | 2019-02-22 |
Family
ID=65375778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811490423.0A Pending CN109368758A (en) | 2018-12-07 | 2018-12-07 | The inorganic agent of fluoride waste in a kind of recovery processing of cathode carbon pieces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109368758A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07171577A (en) * | 1991-12-20 | 1995-07-11 | Nec Corp | Method for treating fluorine in waste water |
| TW453978B (en) * | 1998-06-23 | 2001-09-11 | Ind Tech Res Inst | Crystallization process for removing fluoride from wastewater |
| CN1865173A (en) * | 2005-05-20 | 2006-11-22 | 廖明辉 | Fluorine-containing waste water treatment method and its treating agent |
| CN103570161A (en) * | 2013-11-13 | 2014-02-12 | 南京格洛特环境工程股份有限公司 | Method for removing fluorinions in bastnaesite rare earth smelting waste water |
| CN104891577A (en) * | 2015-05-20 | 2015-09-09 | 中南大学 | Method for removing fluorinion from high-purity manganese sulfate solution |
-
2018
- 2018-12-07 CN CN201811490423.0A patent/CN109368758A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07171577A (en) * | 1991-12-20 | 1995-07-11 | Nec Corp | Method for treating fluorine in waste water |
| TW453978B (en) * | 1998-06-23 | 2001-09-11 | Ind Tech Res Inst | Crystallization process for removing fluoride from wastewater |
| CN1865173A (en) * | 2005-05-20 | 2006-11-22 | 廖明辉 | Fluorine-containing waste water treatment method and its treating agent |
| CN103570161A (en) * | 2013-11-13 | 2014-02-12 | 南京格洛特环境工程股份有限公司 | Method for removing fluorinions in bastnaesite rare earth smelting waste water |
| CN104891577A (en) * | 2015-05-20 | 2015-09-09 | 中南大学 | Method for removing fluorinion from high-purity manganese sulfate solution |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101480658B (en) | Method for electrolyzing waste and old cathode carbon block by comprehensive utilization of aluminum | |
| CN108728867B (en) | Harmless separation method for aluminum electrolysis waste cathode carbon blocks | |
| CN110240182A (en) | The recycling processing method of rich lithium aluminium electrolyte | |
| CN106587105B (en) | The recovery method of copper chloride acid etching liquid in a kind of printed circuit board | |
| CN109909272B (en) | Process method for innocent treatment of overhaul slag of aluminum electrolytic cell by using waste to treat waste | |
| CN106180118B (en) | A kind of method that charcoal in aluminum electrolysis waste cathode is recycled in the acidleach of ultrasonic wave auxiliary pressurized | |
| CN106077036B (en) | A kind of method of ultrasonic wave auxiliary acidleach process aluminum electrolytic waste and old cathode carbon block | |
| CN108754543B (en) | Method for separating carbon slag from aluminum electrolyte | |
| CN104818385B (en) | A kind of energy-saving environment-friendly zero-emission technology of acidic etching waste liquid recycling recycling | |
| CN102719856B (en) | Method for removing alkali metal via electrolytic aluminum liquid | |
| CN102583421A (en) | Circulated preparation method for producing titanium boride and sodium cryolite synchronously by adopting mixture of sodium-based titanium boron villiaumite as intermediate raw material | |
| CN106835194A (en) | A kind of cobalt chloride electrodeposition process | |
| CN104746098A (en) | Electrolyte and method for electrolyzing and refining crude lead | |
| CN102330111A (en) | Method for preparing electric deposited cobalt | |
| CN105617596A (en) | Wet-process harmless treatment method for electrolytic bath overhaul residue | |
| CN103147096B (en) | Method for preparing molten-salt electrolyte containing low-valent titanium chloride and method for extracting titanium | |
| CN102634817A (en) | Ionic liquid low-temperature aluminum electrolysis method with glassy carbon as inert anode | |
| CN104340994B (en) | A kind of method of CFBB total utilization of PCA | |
| CN102628105B (en) | Method for comprehensively recycling and using baric waste slag in refined aluminum production process | |
| CN204369999U (en) | Plumbous electrolyzer is reclaimed in a kind of electrolytic zinc leached mud | |
| CN106587122A (en) | Method for producing cryolites by using aluminum electrolytic cell cathode carbon block alkaline leaching solution | |
| CN106011929A (en) | Method for recycling copper extracted from alkaline copper chloride etching waste liquid | |
| CN109133028A (en) | A method of electrolytic cell waste cathode carbon block recycling is disposed with alkaline process | |
| CN109368758A (en) | The inorganic agent of fluoride waste in a kind of recovery processing of cathode carbon pieces | |
| CN107840357A (en) | A kind of method that ice crystal is produced using cell cathode carbon block alkaline leaching liquid |
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 |
Application publication date: 20190222 |
|
| RJ01 | Rejection of invention patent application after publication |