CN1059457C - Technology for preparation of oxidation-preventive dip of graphite electrode - Google Patents
Technology for preparation of oxidation-preventive dip of graphite electrode Download PDFInfo
- Publication number
- CN1059457C CN1059457C CN95107941A CN95107941A CN1059457C CN 1059457 C CN1059457 C CN 1059457C CN 95107941 A CN95107941 A CN 95107941A CN 95107941 A CN95107941 A CN 95107941A CN 1059457 C CN1059457 C CN 1059457C
- Authority
- CN
- China
- Prior art keywords
- oxidation
- graphite
- preventive
- dip
- antioxidation
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Furnace Details (AREA)
- Discharge Heating (AREA)
Abstract
The present invention relates to a preparation technique of a graphite electrode antioxidation immersion liquid used for electric arc furnaces. The present invention has the advantages of safe and reliable technique, no pollution, simple technique, low cost and convenient use, and can obviously enhance the antioxidation capability of graphite electrodes. The immersion technique comprises: 6 to 10% of aluminum hydroxide (Al(OH)3) is dissolved in 70 to 80% of phosphoric acid (H3PO4) with the concentration of 85%, 14 to 20% of magnesium oxide (MgO) is added to the solution, and water is added to the solution until the baume degree of the solution reaches 25 to 35DEG so as to prepare the graphite electrode antioxidation immersion liquid used for the antioxidation immersion treatment of graphite electrodes.
Description
The present invention relates to the compound method of electric arc furnace with oxidation-preventive dip of graphite electrode.
Graphite Electrodes is the expendable material that is used for electric-arc furnace steelmaking, refining silicon.And the production of Graphite Electrodes not only cost is very high, and current consumption height is a kind of highly energy-consuming product.In order to improve the utilization ratio of Graphite Electrodes, reduce Graphite Electrodes loss in use, the enterprise that has adopts Graphite Electrodes is handled with inoxidzable coating again, this complex process, input expense height and in use, because the coating poorly conductive, electrodes conduct position coating must be peeled off and can be used for producing.In recent years, someone deducts a percentage and with oxidation-preventive dip Graphite Electrodes is carried out the infuse processing, to improve the way of its resistance of oxidation, as after using industrial boric acid and industrial borax being mixed, water furnishing liquid and heating, make the oxidation-preventive dip of Graphite Electrodes, Graphite Electrodes is carried out after infuse handles, to improve the work-ing life of Graphite Electrodes.But the industrial boric acid that this oxidation-preventive dip adopted is poisonous to human body, influences nervus centralis, and life-time service easily causes environmental pollution, and operator are produced murder by poisoning.And this oxidation-preventive dip must can overcome the problem that crystallization is separated out through heating at process for preparation, makes complex process, for the preparation and the use of immersion liquid are made troubles, and has correspondingly increased cost.
The present invention aims to provide a kind of high anti-oxidation immersion liquid of novel Graphite Electrodes, is used for the antioxidation treatment of Graphite Electrodes.The blending process of this high anti-oxidation immersion liquid is safe and reliable, does not pollute, and blending process is easy, and is with low cost, and is easy to use and the resistance of oxidation of Graphite Electrodes increased significantly.
The present invention adds magnesium oxide 14-20% after being achieved in that and adopting 85% phosphoric acid 70-80% and aluminium hydroxide 6-10% to carry out molten mixing earlier again, adds water to its solution weight degree Beaume then and reaches 25-35 °, promptly is mixed with oxidation-preventive dip of graphite electrode.As shown in Figure 1.
Fig. 1 is the blending process synoptic diagram of oxidation-preventive dip of graphite electrode.
The present invention has following good effect: adopt the graphite electrode anit-oxidizing of the present invention's preparation to soak Liquid, the graphite electrode that electric arc furnaces is used carry out after infuse processes, and its oxidation resistance has significantly to be carried Height, prolong service life significantly, compare with the graphite electrode of processing without this immersion liquid infuse, Under equal conditions use, deduct and bump in the operation outside the normal loss such as disconnected, can reduce the graphite electricity The use of the utmost point consumes about 30-40%. Simultaneously, raw materials used nontoxic, preparing process is simple, With low cost, do not need specific condition, preparation and use are very convenient under normal temperature.
Embodiment: with 85% phosphoric acid 75g and aluminium hydroxide 8.3g are molten mix after, add 16.6g magnesium oxide, adding water to heavy degree Beaume is 30 °, makes oxidation-preventive dip of graphite electrode.
Graphite Electrodes A that will cross with this immersion liquid infuse and the Graphite Electrodes B without infuse carry out anti-oxidant experiment simultaneously, after testing under the condition of 850 ℃ of insulations, the oxidisability of A Graphite Electrodes is 40.0mg/g.h, the oxidisability of B Graphite Electrodes is 104.4mg/g.h, and as seen its oxidation-resistance of Graphite Electrodes through oxidation-preventive dip infuse of the present invention has improved 1.6 times.A Graphite Electrodes and B Graphite Electrodes are used for electric arc furnace simultaneously, the work-ing life of A Graphite Electrodes is longer more than 50% than work-ing life of B Graphite Electrodes, the purpose that realized that cost is low, toxicological harmless, technology are easy, can increase substantially the resistance of oxidation of Graphite Electrodes.
Claims (1)
1, a kind of preparation technology of oxidation-preventive dip of graphite electrode, it is characterized in that earlier with 85% phosphoric acid 70-80% and aluminium hydroxide 6-10% molten mixed after, add magnesium oxide 14-20% again, adding water to its solution weight degree Beaume again is 25 °-35 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95107941A CN1059457C (en) | 1995-08-02 | 1995-08-02 | Technology for preparation of oxidation-preventive dip of graphite electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95107941A CN1059457C (en) | 1995-08-02 | 1995-08-02 | Technology for preparation of oxidation-preventive dip of graphite electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1141936A CN1141936A (en) | 1997-02-05 |
| CN1059457C true CN1059457C (en) | 2000-12-13 |
Family
ID=5076539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95107941A Expired - Fee Related CN1059457C (en) | 1995-08-02 | 1995-08-02 | Technology for preparation of oxidation-preventive dip of graphite electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1059457C (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1085727A (en) * | ||||
| CN1036395A (en) * | 1988-04-07 | 1989-10-18 | 中国科学院化工冶金研究所 | Antioxidant protective paint for carbon product |
| CN1050890A (en) * | 1989-10-12 | 1991-04-24 | 中国建材研究院高技术陶瓷研究所 | Fire-resistant oxidation resistant coating |
| CN1052878A (en) * | 1989-12-27 | 1991-07-10 | 冶金部洛阳耐火材料研究院 | Anti-oxidation coating for graphite electrode |
| CN1070933A (en) * | 1992-09-18 | 1993-04-14 | 袁观银 | Antioxidant coating for graphite electrode |
-
1995
- 1995-08-02 CN CN95107941A patent/CN1059457C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1085727A (en) * | ||||
| CN1036395A (en) * | 1988-04-07 | 1989-10-18 | 中国科学院化工冶金研究所 | Antioxidant protective paint for carbon product |
| CN1050890A (en) * | 1989-10-12 | 1991-04-24 | 中国建材研究院高技术陶瓷研究所 | Fire-resistant oxidation resistant coating |
| CN1052878A (en) * | 1989-12-27 | 1991-07-10 | 冶金部洛阳耐火材料研究院 | Anti-oxidation coating for graphite electrode |
| CN1070933A (en) * | 1992-09-18 | 1993-04-14 | 袁观银 | Antioxidant coating for graphite electrode |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1141936A (en) | 1997-02-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100535153C (en) | Method for processing ultra-pure ferrite stainless steel by using ladle refining furnace to control carbon and nitrogen content | |
| CN109468466B (en) | Metallurgical chemical solid waste recycling system and method thereof | |
| CN109825704B (en) | Smelting method of ferrovanadium alloy | |
| CN106884110A (en) | A kind of method that high vacuum electric arc furnaces prepares nickel base superalloy | |
| CN1873031A (en) | Dephosphorization agent for converter, and preparation method | |
| CN1059457C (en) | Technology for preparation of oxidation-preventive dip of graphite electrode | |
| CN103468856A (en) | Method for steel molybdenum alloying | |
| CN102199687A (en) | RH vacuum treatment desulfurizing agent used for non-oriented electrical steel, preparation method thereof, and desulfurizing method using same | |
| CN110819845B (en) | Preparation method of tin-phosphorus oxidation resistant alloy | |
| CN1050890A (en) | Fire-resistant oxidation resistant coating | |
| CN106191506A (en) | A kind of preparation technology of external oxidation dispersion strengthening copper alloy | |
| CN105908031A (en) | High-conductivity aluminum alloy material and preparation method thereof | |
| CN1264997C (en) | Electrochemical pollution-free metal liquid deoxygenating process | |
| CN109576443A (en) | A kind of method and device thereof of bottom spray slag charge refined molten steel | |
| CN113416882A (en) | Method for producing polycrystalline phase vanadium series alloy by utilizing waste rich material | |
| CN1044620C (en) | Refining agent for molten copper and preparation method | |
| CN101818260B (en) | Method for removing tin from lead bullion by adopting brim stone | |
| CN110699592A (en) | Preparation process of high-carbon ferrochrome | |
| CN101818261B (en) | Method for removing tin from lead bullion by adopting ferrous powder | |
| CN104477888A (en) | Natural graphite purification method | |
| CN207792710U (en) | A kind of graphite cathode material high temperature sintering control system | |
| CN101597771A (en) | The working method of cathode matched with aluminium electrolyser | |
| CN215340811U (en) | Aluminum electrolysis vacuum ladle heating and control device | |
| CN109055661A (en) | A kind of production technology of low-phosphorous stainless steel | |
| CN1176312A (en) | Production process of molybdenum carbide |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |