CN1066687A - With the direct smelting Si-Al-Fe alloy of ore - Google Patents
With the direct smelting Si-Al-Fe alloy of ore Download PDFInfo
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- CN1066687A CN1066687A CN 91103033 CN91103033A CN1066687A CN 1066687 A CN1066687 A CN 1066687A CN 91103033 CN91103033 CN 91103033 CN 91103033 A CN91103033 A CN 91103033A CN 1066687 A CN1066687 A CN 1066687A
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- ore
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- direct smelting
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Abstract
The present invention is a kind of with the direct smelting Si-Al-Fe alloy of ore, goes back original production with a direct step of the hot stove in ore deposit and smelts into ferro-silicon.Adopt raw material to add through the broken thorough mixing of fine powder in batching again and be pressed into piece or ball, make to be reduced agent and closely to contact with reductive agent, the ore of selecting for use the plumbous stone of gibbsite and a water to add kaolin isoreactivity aluminium sesquioxide is done raw material, and the composition of allocating raw material block is: Al
2O
3Be 60～70%, SiO
2Be 15～20%, Fe
2O
3Be 2.0～3.0%, this alloy is unsetting block, is used for steel making deoxidant and can saves aluminium ingot about 50%, and disposable smelting Si-Al-Fe is smelted save energy more than 40% than the secondary input.
Description
The invention belongs to a kind of alloy smelting technology field.
Steel making deoxidant directly adds the pure metal aluminium ingot for many years always to be realized, carry out deoxidation in steel making though promote the use of silicon-aluminum-iron alloy in recent years, but silicon-aluminum-iron alloy is to add ferrosilicon with fine aluminium to become Alsimin through secondary smelting, to expend valuable aluminium ingot like this, be cost height, consumes energy again.
The object of the present invention is to provide the aluminiferous high grog of a kind of usefulness, go back original production with a direct step of the hot stove in ore deposit and smelt into silicon-aluminum-iron alloy.And the energy save energy, cost is low, improves the quality of products.
The present invention realizes by having following smelting process: go on foot with the hot stove in ore deposit direct and smelt into Alsimin.According to the reduction characteristic of aluminium, the avidity of oxygen and aluminium, by the free enthalpy equation:
△G＝167400-86.4T;
△G＝325660-155.07T;
Calculate the molecular balance temperature T=2100 ° K of aluminium, 2100-1938=162 ° of K of molecular balance temperature greater than silicon, AL is difficult to reductive, and reduction temperature is high more a lot of than silicon, therefore, must be by means of promoting that reductive agent SPA just can be smelted smoothly, from smelting ferrosilicon, learn, when iron exists, can reduce the ferrosilicon reduction temperature, when smelting ferrosilicon, there is iron to exist and also will reduces reduction temperature equally.Because the fusing point of aluminium is low, in case after the reduction, the flowability of its alloy, electroconductibility is more effective than ferro-silicon.Their molten boiling point is as follows:
Fusing point ℃ boiling point ℃
Silicon 1,414 2680
Iron 1,539 2740
Aluminium 660 2497
The used raw material of the present invention is a bauxite clinker, and its chemical analysis is as follows:
AL
2O
3SiO
2Fe
2O
3
Alumina 60～70 15～20 1～2
Tripoli 1.3 98 1.5
The moulding mixture proportioning:
Bauxite clinker 60～80%
Tripoli 10～15%
Coke 15～30%
SPA(promotes reductive agent) an amount of
The present invention adopts raw material in batching behind the broken thorough mixing of fine powder, add again and be pressed into piece or ball and make and be reduced agent and closely contact with reductive agent, next is to select for use the plumbous stone of gibbsite and a water to increase the ore that Cen soil etc. contains active aluminium sesquioxide to do raw material, improved reducing power, the composition of allotment raw material block is: weight ratio:
AL
2O
3SiO
2Fe
2O
3Na
2O
60～70%??15～20%??2.0～3.0%??0.1～1%
The present invention is for quickening AL
2O
3Reduction in batching, add and contain Fe
2O
3Iron sheet (clouds) 10% and PAS1-2%.Will keep during smelting evenly feeding intake, flow or blow over and cover completely electrode, big current practice is smelted and was got final product water outlet in about 3 hours.
The present invention is unsetting block with the direct smelting Si-Al-Fe alloy of ore, alloy, and its Chemical Composition aluminium is 41.15%, and silicon is 2400%, and the iron surplus section is a silver gray.Be used for steel making deoxidant and can save aluminium ingot about 50%, disposable smelting Si-Al-Fe is smelted save energy more than 40% than the secondary input, and it is more stable to be used for deoxidation in steel making simultaneously, and deoxidation effect is good.
Most preferred embodiment of the present invention:
The hot stove blow-on in ore deposit need be given first baker, with the timber baker after 48 hours, with electric oven 36 hours, draw lonely reinforced with steel cuttings, every batch reinforced is comprehensive raw material 100kg, burnt grain 20kg, steel cuttings 15kg, feed rate is 300～500kg per hour, going out the aluminium time is 3～4 hours, and 80 volts of operating voltages, actuating current are 100～120A, add ore grain size 30～100mm, coke size is 3～7mm, promotes reductive agent SPA to sneak into and together goes into stove in the raw material, puddles evenly and forms even spraying in ore and coke surface with liquation, add with material, adopt the smelting that directly feeds intake.According to the stokehold sample examination, composition aluminium 40%～45%, silicon 28～34%, iron 20～30% meets the composition of raw materials requirement.
Claims (3)
1, a kind of with the direct smelting Si-Al-Fe alloy of ore, it is characterized in that: select for use the plumbous stone of gibbsite and a water to increase the ore that Cen soil contains active aluminium sesquioxide and do raw material, the composition of allotment raw material block is a weight ratio:
Al
2O
3SiO
2Fe
2O
3
60～70%??15～20%??2.0～3.0%
2, according to claim 1 with the direct smelting Si-Al-Fe alloy of ore, it is characterized in that: quicken AL
2O
3Reduction in batching, add and contain Fe
2O
3The iron clouds be 10% and PAS 1-2%.
3, according to claim 1 with the direct smelting Si-Al-Fe alloy of ore, it is characterized in that: in batching, raw material added through the broken thorough mixing of fine powder again and be pressed into piece or ball, make to be reduced agent and closely to contact with reductive agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91103033 CN1066687A (en) | 1991-05-13 | 1991-05-13 | With the direct smelting Si-Al-Fe alloy of ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91103033 CN1066687A (en) | 1991-05-13 | 1991-05-13 | With the direct smelting Si-Al-Fe alloy of ore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1066687A true CN1066687A (en) | 1992-12-02 |
Family
ID=4905861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91103033 Pending CN1066687A (en) | 1991-05-13 | 1991-05-13 | With the direct smelting Si-Al-Fe alloy of ore |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1066687A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365145C (en) * | 2005-08-30 | 2008-01-30 | 宋德忠 | Technology for manufacturing aluminium silicon iron alloy |
| CN100396798C (en) * | 2006-11-23 | 2008-06-25 | 鞍钢股份有限公司 | Slag forming element in use for refining molten steel, production method, and slagging method |
| CN100427620C (en) * | 2006-07-14 | 2008-10-22 | 中国铝业股份有限公司 | Direct Al-Si-Fe alloy smelting process in ore smelting furnace |
| CN103866128A (en) * | 2014-03-10 | 2014-06-18 | 北京科技大学 | Method of directly producing aluminum iron alloy by using carbothermy reduced aluminium metallurgy red mud |
| CN111518976A (en) * | 2020-06-12 | 2020-08-11 | 山东煜龙环保科技股份有限公司 | Method for producing ferro-silico-aluminum alloy by using low-grade iron ore powder |
| CN111647741A (en) * | 2020-06-12 | 2020-09-11 | 山东煜龙环保科技股份有限公司 | Method for producing ferro-silico-aluminum alloy by using red mud iron powder |
-
1991
- 1991-05-13 CN CN 91103033 patent/CN1066687A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365145C (en) * | 2005-08-30 | 2008-01-30 | 宋德忠 | Technology for manufacturing aluminium silicon iron alloy |
| CN100427620C (en) * | 2006-07-14 | 2008-10-22 | 中国铝业股份有限公司 | Direct Al-Si-Fe alloy smelting process in ore smelting furnace |
| CN100396798C (en) * | 2006-11-23 | 2008-06-25 | 鞍钢股份有限公司 | Slag forming element in use for refining molten steel, production method, and slagging method |
| CN103866128A (en) * | 2014-03-10 | 2014-06-18 | 北京科技大学 | Method of directly producing aluminum iron alloy by using carbothermy reduced aluminium metallurgy red mud |
| CN103866128B (en) * | 2014-03-10 | 2016-01-20 | 北京科技大学 | Carbothermy reduction aluminium metallurgy red mud direct production ferroaluminium |
| CN111518976A (en) * | 2020-06-12 | 2020-08-11 | 山东煜龙环保科技股份有限公司 | Method for producing ferro-silico-aluminum alloy by using low-grade iron ore powder |
| CN111647741A (en) * | 2020-06-12 | 2020-09-11 | 山东煜龙环保科技股份有限公司 | Method for producing ferro-silico-aluminum alloy by using red mud iron powder |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |