CN1033523C - Technology for producing low-iron silicon-aluminium alloy and self-baking electrode - Google Patents
Technology for producing low-iron silicon-aluminium alloy and self-baking electrode Download PDFInfo
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- CN1033523C CN1033523C CN 93117339 CN93117339A CN1033523C CN 1033523 C CN1033523 C CN 1033523C CN 93117339 CN93117339 CN 93117339 CN 93117339 A CN93117339 A CN 93117339A CN 1033523 C CN1033523 C CN 1033523C
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Abstract
The present invention relates to the technology for producing low iron silicon aluminum alloys and a self baking electrode, which is characterized in that fine selection of raw materials: the Fe2O3 content of silica is less than 0.1%, the Fe/Al content of bauxite is less than 1.2%, the Fe content of charcoal is less than 0.03%, the Fe content of coke or carbocoal is less than 0.4%, the Fe content of petroleum coke is less than 0.1%, and the Fe content of head coal is less than 0.4%. On the basis that the low iron raw materials are chosen, the traditional self baking electrode for smelting iron alloys is reformed, the wall thickness of an electrode shell is decreased by 1/3 to 1/2 and is 0.5 to 1.0mm, and the ratio of the diameter of the electrode shell to the wall thickness of the electric shell is 100: (0.04 to 0.16). The thickness of ribbed slabs is decreased by 1/2 to 2/3 and is 0.5 to 1.0mm, the number of the ribbed slabs is decreased by 1/3 to 2/3, and the contact part of the sintering part of the electrode and a copper tile needs to account for 1/3 to 2/3 of the length of the copper tile after the reformed electrode is used. The reformed electrode and the chosen low iron raw materials are matched and can completely be used for producing the low iron silicon aluminum alloys whose Fe content is less than 1.5%. Compared with the cost for the use of graphite electrodes, the production cost of the technology is decreased by 800 to 1500 RMB/t.
Description
The invention belongs to field of metallurgy, be specifically related to the smelting of low-iron silicon-aluminium alloy.
Since 1991, China's foreign trade is to a kind of silumin that contains Al＜20% of state's outer vent, require iron-holder to be lower than 1.5%, the domestic existing manufacturer of this low-iron silicon-aluminium alloy all is with the high Graphite Electrodes production of price in the hot stove in ore deposit, product per ton will consume Graphite Electrodes 0.10-0.15 ton, production cost height.Both at home and abroad producer all has cheap self baking electrode to produce iron alloy, but since self baking electrode to contain the Fe amount high, can't be used for producing low-iron silicon-aluminium alloy.
Purpose of the present invention is exactly need use the high Graphite Electrodes of price at the production of present low-iron silicon-aluminium alloy, the deficiency that production cost is high, and a kind of production technique and electrode are provided, and be used for producing low-iron silicon-aluminium alloy, reduce production costs.
Technical scheme of the present invention is: the cheap self baking electrode that will be used to produce iron alloy reduces it and contains the Fe amount through transforming, and migrates and produces low-iron silicon-aluminium alloy; Select the low raw material of iron-holder simultaneously for use.Selected raw material silica by weight contains Fe
2O
3＜0.1%, Fe/Al in the aluminium vanadine＜1.2%; Reductive agent charcoal by weight contains Fe＜0.03%; Cleaned coal contains Fe＜0.4%, and coke contains Fe＜0.4%, and refinery coke contains Fe＜0.1%.
Selecting for use on the basis of above-mentioned low iron material, traditional cheap self baking electrode that is used for ferroalloy smelting is being transformed.Electrode shell (1) and electrode paste (2) that traditional self baking electrode is made by the steel plate cylinder are formed, the inwall of electrode shell (1) is fixed with 3-12 piece gusset (3), the gusset direction is pointed to the center of circle, spacing between gusset equates, have gusset hole (4) on the gusset, the wall thickness 1-3mm of electrode shell (1), the diameter of electrode shell (1) are bigger, shell wall is thicker, and the fixed reinforcing plate number the more.Through improved self baking electrode, the wall thickness reduction 1/3-1/2 of electrode shell (1), be 0.5-1.5mm, the diameter of electrode shell and wall thickness be: diameter: wall thickness=100: 0.04-0.16, gusset reduced thickness 1/2-2/3 is 0.5-1.0mm, and the quantity of gusset (3) reduces 1/3-2/3, be the 1-4 piece, the area of gusset hole (4) is the 1/5-1/3 of gusset area.
The working method of transferring of improved self baking electrode is in the fusion process, and the transferring of electrode must keep electrode sintering part and brasses contact part to account for the 1/3-2/3 of brasses length, to guarantee the electrode failsafe.Other smelting operation of the present invention is identical with common ore deposit hot stove production silumin.
The invention has the advantages that having broken metallurgical boundary tradition thinks that self baking electrode contains Fe amount height, can not be used for producing the viewpoint of low-iron silicon-aluminium alloy, with traditional self baking electrode through transforming, reduce iron-holder, be aided with low raw material of selected iron-holder and suitable working method simultaneously, the silumin of being produced, the standard that meets low-iron silicon-aluminium alloy fully, its iron-holder＜1.5%.And products production cost per ton is than Graphite Electrodes decline 800-1500 unit.
Accompanying drawing 1 is a structural representation of the present invention.
Accompanying drawing 2 is the A-A sectional view of accompanying drawing 1.
Embodiment:
On the hot stove in the ore deposit of 6300KVA, produce working voltage 90-120V as a trial
The type of furnace: open wide the hot stove in fixed ore deposit
Furnace shell external diameter: 6200mm
Burner hearth internal diameter: 4400mm
Furnace shell height: 3800mm
Furnace depth: 1900mm
Electrode: self baking electrode shell of the present invention, diameter 750mm, thickness of pipe 0.8mm, gusset thickness 0.5mm, each electrode shell is with 2 of the gussets of high 140mm, each gusset upper punch 100-160cm
23 of slotted eyes, electrode circle diameter 1800mm.
Raw material and reductive agent ratio (weight): silica: aluminium vanadine: refinery coke: charcoal: coke=100: 7-20: 10-20: 10-20: 10-25.
The raw material composition is by weight: silica contains Fe
2O
3＜0.1%, the aluminium vanadine contains Fe/Al＜1.2%, and charcoal contains Fe＜0.03%, and coke or blue charcoal contain Fe＜0.4%, and refinery coke contains Fe＜0.1%, and cleaned coal contains Fe＜0.4%.
It is identical that the hot stove in working method and common ore deposit is produced silumin, but will keep the sintering velocity of self baking electrode to be not less than the spending rate of electrode, and the sintering part that makes electrode and brasses contact part account for the 1/3-2/3 of brasses length, otherwise easy generating electrodes fault.
Claims (2)
1, a kind of production technique of low-iron silicon-aluminium alloy is a raw material with selected silica, aluminium vanadine, and charcoal, cleaned coal, refinery coke, coke are reductive agent, uses the hot stove in ore deposit to smelt, and it is characterized in that silica contains Fe by weight
2O
3＜0.1%, the aluminium vanadine contains Fe/Al＜1.2%, and charcoal contains Fe＜0.03%, and cleaned coal contains Fe＜0.4%, and coke or blue charcoal contain Fe＜0.4%, and refinery coke contains Fe＜0.1%; In fusion process, when descending discharge electrode, the sintering position of control electrode and the contact part of brasses account for the 1/3-2/3 of watt length at every turn.
2, a kind of self baking electrode that is exclusively used in the described production technique of claim 1, form by electrode shell (1) and electrode paste (2) that the steel plate cylinder is made, electrode paste is contained in the electrode shell, the inwall of electrode shell is fixed with gusset (3), gusset points to the center of circle, have gusset hole (4) on the gusset, it is characterized in that electrode shell (1) is 0.5-1.5mm, the diameter of electrode shell is a diameter with the ratio of wall thickness: wall thickness=100: 0.04-0.16, gusset (3) thickness is 0.5-1.0mm, reinforcing plate number is the 1-4 piece, and the area of gusset hole (4) is the 1/5-1/3 of gusset area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93117339 CN1033523C (en) | 1993-09-11 | 1993-09-11 | Technology for producing low-iron silicon-aluminium alloy and self-baking electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93117339 CN1033523C (en) | 1993-09-11 | 1993-09-11 | Technology for producing low-iron silicon-aluminium alloy and self-baking electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1093116A CN1093116A (en) | 1994-10-05 |
| CN1033523C true CN1033523C (en) | 1996-12-11 |
Family
ID=4991977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93117339 Expired - Fee Related CN1033523C (en) | 1993-09-11 | 1993-09-11 | Technology for producing low-iron silicon-aluminium alloy and self-baking electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1033523C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101990327B (en) * | 2009-08-06 | 2012-08-22 | 登封电厂集团铝合金有限公司 | Electrode shell of large submerged arc furnace |
| CN103567706B (en) * | 2012-07-20 | 2016-01-20 | 韩爱华 | Electrode shell manufacturing process |
| CN105755294B (en) * | 2016-01-25 | 2017-07-18 | 富阳市正康煤业有限公司 | A kind of biomass carbon complex reducing agent of Copper making |
| CN105567995B (en) * | 2016-01-25 | 2017-10-17 | 富阳市正康煤业有限公司 | The complex reducing agent that a kind of copper fire refining is used |
| CN109095489A (en) * | 2018-09-13 | 2018-12-28 | 贵州黄平富城实业有限公司 | A kind of the self-baking electrode smelting process and device of suitable corundum smelting |
| CN110337153B (en) * | 2019-08-02 | 2024-03-22 | 阳江翌川金属科技有限公司 | Electrode tube |
-
1993
- 1993-09-11 CN CN 93117339 patent/CN1033523C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1093116A (en) | 1994-10-05 |
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