CN1022367C - Boronated carbon products and their production - Google Patents
Boronated carbon products and their production Download PDFInfo
- Publication number
- CN1022367C CN1022367C CN 89105007 CN89105007A CN1022367C CN 1022367 C CN1022367 C CN 1022367C CN 89105007 CN89105007 CN 89105007 CN 89105007 A CN89105007 A CN 89105007A CN 1022367 C CN1022367 C CN 1022367C
- Authority
- CN
- China
- Prior art keywords
- graphite electrode
- boride
- carbon product
- infiltration
- workpiece
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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.)
- Expired - Fee Related
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- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The present invention relates to a carbon product used for industrial production and a manufacture method thereof. The carbon product is characterized in that the surface of the carbon product is coated with boron or boride, or the boron or the boride is infiltered into the certain thickness of the surface layer of the carbon product. The manufacture method comprises the working procedures of solution preparation, workpiece infiltration, drying, etc. Compared with the common carbon product, the carbon product of the present invention obviously prolongs service life.
Description
The present invention is a kind of processing method that relates to electric furnace steel making with graphite electrode.
As everyone knows, carbon product has advantages such as higher intensity, corrosion-resistant, Heat stability is good, easy conductive under the condition of high temperature, therefore in industry, particularly production fields such as metallurgy, chemical industry, obtain using, for example graphite crucible, build by laying bricks or stones at the bottom of the State of Blast Furnace and carbon brick that cupola well is used etc., what wherein consumption was maximum is the graphite electrode that must use in the electric furnace steel making.
Graphite electrode has reasonable serviceability, but its production process is comparatively complicated, power consumption is more, so production cost is higher, and in use owing to be under the hot environment, the surface of graphite electrode contacts with air, and oxidation easily is a kind of consumable supply, the consumption of the graphite electrode of China's electric furnace steel making is 5～8 kilograms of/ton steel at present, and this has increased the goods and materials cost of steel-making undoubtedly.
Keeping on the existing characteristic basis of graphite electrode, be purpose of the present invention the useful life of improving existing common graphite electrode, the inventor studies for this reason, produce a kind of surface and be coated with the last layer boride or in the superficial layer certain thickness of common graphite electrode, be impregnated into boride, the purpose of invention is met at the common graphite electrode.
The design of this invention is as follows.The consumption of graphite electrode mainly is by its oxidized causing in surface, want to improve the life-span of graphite electrode, it is exposed in operational environment just should at first to avoid taking place graphite electrode surface, even perhaps expose the possibility that also should reduce with oxygen generation chemical reaction, intend taking two kinds of ways for this reason, a kind of is to be coated with the last layer polyphenoils on the surface of graphite electrode, allows this material and oxygen react under the condition of high temperature, the protection graphite electrode; The 2nd, adopt the way of infiltrating, polyphenoils is infiltrated up in the superficial layer of graphite electrode, allow it at first react with oxygen.By aforementioned inventive concept as seen, finding this polyphenoils, adopt suitable method that it is sprayed on the surface of graphite electrode or be infiltrated up in the superficial layer of graphite electrode, is the difficult point of this invention, also is its feature place.
According to the top inventive concept of saying, the researcher selects for use multiple material to carry out repetition test, and tests its result and screen, and last conclusion is to adopt the boride best results.
Particular content of the present invention is to serve as to handle workpiece with existing common graphite electrode, it is characterized in that specifically comprising in the method obtain solution, workpiece infiltration, three technical processs of oven dry, wherein:
(1) obtain solution is meant with the boride to be solute, is solvent with water, and percentage concentration is calculated by weight, and solution concentration is 5-40%.Certainly concentration is high more good more;
(2) the workpiece infiltration is meant with common graphite electrode to serve as to handle part, is placed in the solution that the boride for preparing is housed, and the infiltration some hrs is till corresponding the reaching capacity of infiltration amount of the superficial layer that is soaked workpiece solute in desired thickness;
(3) oven dry is meant the graphite electrode oven dry or the airing that will infiltrate, and reaching surperficial and inner does not have till the existence of free water.
When the boronation graphite electrode places hot conditions following time, can generate one deck fusing point oxide-film on the low side, comparatively fine and close on its surface, this film has limited contact, the oxidation of oxygen with graphitic carbon in the film, and then has prolonged the useful life of graphite electrode.Experiment shows that under same electric steelmaking process condition the consumption of electrode that uses the common graphite electrode to smelt is 5 kilograms of/ton steel, uses boronation graphite electrode consumption amount to be about 4 kilograms of/ton steel, reduces specific electrode consumption about 20%, and effect is remarkable.
Claims (1)
1, a kind of electric furnace steel making boronation processing method of graphite electrode, this method serves as to handle workpiece with existing common graphite electrode, it is characterized in that comprising in this kind method obtain solution, workpiece infiltration, three operations of oven dry, wherein:
(1) obtain solution is meant that with boride be molten matter, is that to make weight percent concentration be 5～40% boride solution to solvent with water;
(2) workpiece infiltration is meant common graphite electrode is placed aforesaid boride solution, and infiltration a few hours are till making the electrode surface layer amounts of saturation of solute reaching capacity in desired thickness;
(3) oven dry is meant the graphite electrode oven dry of will infiltrate or dries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105007 CN1022367C (en) | 1989-01-17 | 1989-01-17 | Boronated carbon products and their production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105007 CN1022367C (en) | 1989-01-17 | 1989-01-17 | Boronated carbon products and their production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1044304A CN1044304A (en) | 1990-08-01 |
| CN1022367C true CN1022367C (en) | 1993-10-06 |
Family
ID=4855779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89105007 Expired - Fee Related CN1022367C (en) | 1989-01-17 | 1989-01-17 | Boronated carbon products and their production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1022367C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1037015C (en) * | 1992-09-01 | 1998-01-14 | 太原工业大学 | Impregnation treatment of graphite anode for chlor-alkali industry |
| CN103741167A (en) * | 2013-12-25 | 2014-04-23 | 中国矿业大学 | Method for improving oxidization resistance of carbon anode for electrolyzing aluminum |
-
1989
- 1989-01-17 CN CN 89105007 patent/CN1022367C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1044304A (en) | 1990-08-01 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |