CN101812590A - Method for producing Al-Si-Cu alloy by electric heating method - Google Patents
Method for producing Al-Si-Cu alloy by electric heating method Download PDFInfo
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- CN101812590A CN101812590A CN201010147978A CN201010147978A CN101812590A CN 101812590 A CN101812590 A CN 101812590A CN 201010147978 A CN201010147978 A CN 201010147978A CN 201010147978 A CN201010147978 A CN 201010147978A CN 101812590 A CN101812590 A CN 101812590A
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Abstract
The invention discloses a method for producing Al-Si-Cu alloy by an electric heating method, which comprises the following steps of: preprocessing raw materials; mixing; briquetting; and preparing an Al-Si-Cu alloy by an electric heating method. Compared with the prior art, the invention is used for producing an Al-Si-Cu mother alloy for smelting and casting the Al-Si alloy by utilizing coal series kaolin and copper oxide ore as main raw materials, adopting petroleum coke and bitumite as reducing agents by reasonable mixture through adopting an electric heating method. The invention solves the problems of long production process, high energy consumption, high production cost and large investment. The Al-Si-Cu mother alloy produced by adopting the coal series kaolin and the copper oxide ore as the main raw materials comprises the following main components in percentage by weight: 30-45 percent of aluminum, 35-55 percent of silicon and 10-20 percent of copper.
Description
Technical field
The present invention relates to metallurgical technology field, be specifically related to a kind of Coaseries kaolin and copper oxide ore of utilizing and be main raw material, adopt electric heating process to produce the method for aluminium copper silicon mother alloy.
Background technology
The cast Al-Si alloy of many trades mark contains copper, and copper produces bigger influence as the production cost of valuable metal pair cast Al-Si alloy.For this reason, produce copper bearing aluminium silicon mother alloy, utilize the molten Alar of joining all kinds of trades mark of this mother alloy, become gordian technique thereby produce satisfactory cast Al-Si alloy.
At present, producing Alar in the world has two kinds of methods, promptly admixes method and electric heating process.The blending method is the industrial silicon fusion of the metallic aluminium of electrolysis generation and electric heating process production to be mixed prepare; Electric heating process is with the ore directly reduction at high temperature of aluminum oxide and silicon-dioxide, obtains aluminium silicon mother alloy, again with the molten Alar of joining all kinds of trades mark of aluminium silicon mother alloy.The aluminum silicon alloy of China's production at present all is to adopt to mix to make, and Production Flow Chart is long, the energy consumption height, and the production cost height, electrolytic process is produced aluminium to be needed earlier bauxite is made aluminum oxide, and electrolytic production of aluminum need be built aluminum oxide and electrolytic aluminium factory again, and investment is big.Conclusion is got up, can see, the blending method needs alumina producer, electrolytic aluminium factory, electric heating process manufacture silicon factory and aluminium alloy smelting factory, and electric heating process is produced factory and aluminium alloy smelting factory that aluminum silicon alloy only need be similar to electric heating process manufacture silicon, its Production Flow Chart is short, initial cost is few, and energy consumption and cost are lower.
Find through literature search prior art, publication number is that the Chinese patent of CN101376937A and CN1077472C discloses the molten production technique of joining Al-Si-Cu alloy of blending method respectively, but do not find that with Coaseries kaolin and copper oxide ore be main raw material, adopt electric heating process to produce the report of aluminium copper silicon mother alloy.
Summary of the invention
Technical problem to be solved by this invention is to provide at the deficiencies in the prior art a kind of method of method for producing Al-Si-Cu alloy by electric heating, and existing Production Flow Chart is long, energy consumption is high, production cost is high and invest big problem with solving.
In order to realize the foregoing invention purpose, the method for method for producing Al-Si-Cu alloy by electric heating of the present invention is characterized in that, may further comprise the steps:
(4) raw materials pretreatment is arrived granularity less than 0.5mm with the Coaseries kaolin ball milling; Reductive agent adopts refinery coke and bituminous coal, and with described refinery coke and bituminous coal ball milling to particle diameter less than 1mm;
(5) batching and briquetting, according to Coaseries kaolin 40～60wt%, copper oxide ore 5～30wt%, refinery coke 0～10wt%, bituminous coal 20～40wt% proportioning raw material, and the spent pulping liquor of 15～22wt% of adding raw material weight is as wedding agent, mixed ball, and oven dry pellet;
(6) electric heating process prepares Al-Si-Cu alloy, and dried pellet is sent into the hot stove in ore deposit, smelts under the high temperature of 2000～2800 ℃ of temperature, every 2 hours, adopts the graphite arc burner to open the stove eye, emits aluminium copper silicon mother alloy, leaves standstill slagging-off back ingot casting.
Further being characterized as described Coaseries kaolin major ingredient weight percent is: Al
2O
3Content 32～38wt%, SiO
2Content 42～46wt%; Copper oxide ore major ingredient weight percent is: CuO content 〉=25wt%, SiO
2Content 40～45wt%; Refinery coke major ingredient weight percent is: volatile content 10～15wt%, the ash content of coal≤1wt%, fixed carbon content 81～90wt%; Bituminous coal major ingredient weight percent is: volatile content 27～31wt%, the ash content of coal≤7wt%, fixed carbon content 55～65wt%.
Further, the spent pulping liquor that the wedding agent in the described step (2) adopts the paper mill to produce wherein contains active substance sulfonated lignin content 〉=55wt%.
Wherein, the temperature in the step (3) is preferably 2000～2200 ℃.
Further be characterized as in the described step (2) the oven dry pellet to moisture content less than 2wt%.
Advantage of the present invention is, the present invention utilizes Coaseries kaolin and copper oxide ore as main raw material, reductive agent adopts refinery coke and bituminous coal, pass through rational proportion, adopt electric heating process production to be used for molten aluminium copper silicon mother alloy of joining cast Al-Si alloy, Production Flow Chart is short, energy consumption is low, production cost is low and invest little.
Employing Coaseries kaolin and copper oxide ore are that the major ingredient weight percent of the aluminium copper silicon mother alloy of main material production is: aluminium content 30～45wt%, silicone content 35～55wt%, copper 10～20wt%.
Embodiment
Below embodiments of the invention are elaborated: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
Raw material major ingredient and granularity:
Coaseries kaolin major ingredient weight percent: Al
2O
3Content 36.05%, SiO
2Content 44.52%.It is worn into granularity less than 0.5mm.Copper oxide ore major ingredient weight percent: CuO content 25.46%, SiO
2Content 42.23%.It is worn into granularity less than 0.5mm.
Reductive agent major ingredient and granularity:
Refinery coke major ingredient weight percent: volatile content 12.56%, the ash content of coal 0.28%, fixed carbon content 84.57%.It is worn into granularity less than 1mm.
Bituminous coal major ingredient weight percent: volatile content 29.3%, the ash content of coal 6.71%, fixed carbon content 59.6%.It is worn into granularity less than 1mm.
Coaseries kaolin 50%, copper oxide ore 15%, refinery coke 8% and bituminous coal 27% batching by weight percentage add 18% spent pulping liquor of raw material weight, mix system ball, drying.Dried pellet is put into the hot stove in ore deposit, smelts under the high temperature of 2100 ℃ of temperature.Every 2 hours, adopt the graphite arc burner to open the stove eye, emit aluminium copper silicon mother alloy, leave standstill slagging-off back ingot casting.
The principal element weight percent is in the aluminium copper silicon mother alloy of producing: aluminium content 35.35%, silicone content 46.55%, copper content 13.29%.
Embodiment 2
Raw material major ingredient and granularity:
Coaseries kaolin major ingredient weight percent: Al
2O
3Content 36.05%, SiO
2Content 44.52%.It is worn into granularity less than 0.5mm.Copper oxide ore major ingredient weight percent: CuO content 25.46%, SiO
2Content 42.23%.It is worn into granularity less than 0.5mm.
Reductive agent major ingredient and granularity:
Refinery coke major ingredient weight percent: volatile content 12.56%, the ash content of coal 0.28%, fixed carbon content 84.57%.It is worn into granularity less than 1mm.
Bituminous coal major ingredient weight percent: volatile content 29.3%, the ash content of coal 6.71%, fixed carbon content 59.6%.It is worn into granularity less than 1mm.
Coaseries kaolin 55%, copper oxide ore 10%, refinery coke 6% and bituminous coal 29% batching by weight percentage add 20% spent pulping liquor of raw material weight, mix system ball, drying.Dried pellet is put into the hot stove in ore deposit, smelts under the high temperature of 2200 ℃ of temperature.Every 2 hours, adopt the graphite arc burner to open the stove eye, emit aluminium copper silicon mother alloy, leave standstill slagging-off back ingot casting.
The principal element weight percent is in the aluminium copper silicon mother alloy of producing: aluminium content 39.17%, silicone content 47.02%, copper content 10.09%.
Embodiment 3
Raw material major ingredient and granularity:
Coaseries kaolin major ingredient weight percent: Al
2O
3Content 36.05%, SiO
2Content 44.52%.It is worn into granularity less than 0.5mm.Copper oxide ore major ingredient weight percent: CuO content 25.46%, SiO
2Content 42.23%.It is worn into granularity less than 0.5mm.
Reductive agent major ingredient and granularity:
Refinery coke major ingredient weight percent: volatile content 12.56%, the ash content of coal 0.28%, fixed carbon content 84.57%.It is worn into granularity less than 1mm.
Bituminous coal major ingredient weight percent: volatile content 29.3%, the ash content of coal 6.71%, fixed carbon content 59.6%.It is worn into granularity less than 1mm.
Coaseries kaolin 45%, copper oxide ore 20%, refinery coke 10% and bituminous coal 25% batching by weight percentage add 16% spent pulping liquor of raw material weight, mix system ball, drying.Dried pellet is put into the hot stove in ore deposit, smelts under the high temperature of 2050 ℃ of temperature.Every 2 hours, adopt the graphite arc burner to open the stove eye, emit aluminium copper silicon mother alloy, leave standstill slagging-off back ingot casting.
The principal element weight percent is in the aluminium copper silicon mother alloy of producing: aluminium content 32.15%, silicone content 44.97%, copper content 18.23%.
More than show and described ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification sheets just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (5)
1. the method for a method for producing Al-Si-Cu alloy by electric heating is characterized in that, may further comprise the steps:
(1) raw materials pretreatment is arrived granularity less than 0.5mm with the Coaseries kaolin ball milling; Reductive agent adopts refinery coke and bituminous coal, and with described refinery coke and bituminous coal ball milling to particle diameter less than 1mm;
(2) batching and briquetting, according to Coaseries kaolin 40～60wt%, copper oxide ore 5～30wt%, refinery coke 0～10wt%, bituminous coal 20～40wt% proportioning raw material, and the spent pulping liquor of 15～22wt% of adding raw material weight is as wedding agent, mixed ball, and oven dry pellet;
(3) electric heating process prepares Al-Si-Cu alloy, and dried pellet is sent into the hot stove in ore deposit, smelts under the high temperature of 2000～2800 ℃ of temperature, every 2 hours, adopts the graphite arc burner to open the stove eye, emits aluminium copper silicon mother alloy, leaves standstill slagging-off back ingot casting.
2. the method for a kind of method for producing Al-Si-Cu alloy by electric heating according to claim 1 is characterized in that, described Coaseries kaolin major ingredient weight percent is: Al
2O
3Content 32～38wt%, SiO
2Content 42～46wt%; Copper oxide ore major ingredient weight percent is: CuO content 〉=25wt%, SiO
2Content 40～45wt%; Refinery coke major ingredient weight percent is: volatile content 10～15wt%, the ash content of coal≤1wt%, fixed carbon content 81～90wt%; Bituminous coal major ingredient weight percent is: volatile content 27～31wt%, the ash content of coal≤7wt%, fixed carbon content 55～65wt%.
3. the method for a kind of method for producing Al-Si-Cu alloy by electric heating according to claim 1, it is characterized in that, the spent pulping liquor that wedding agent in the described step (2) adopts the paper mill to produce, active substance lignosulfonic acid salts contg is not less than 55wt% in this spent pulping liquor.
4. the method for a kind of method for producing Al-Si-Cu alloy by electric heating according to claim 1 is characterized in that, the temperature in the described step (3) is 2000～2200 ℃.
5. the method for a kind of method for producing Al-Si-Cu alloy by electric heating according to claim 1 is characterized in that, in the described step (2) the oven dry pellet to moisture content less than 2wt%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010147978A CN101812590A (en) | 2010-04-15 | 2010-04-15 | Method for producing Al-Si-Cu alloy by electric heating method |
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| CN201010147978A CN101812590A (en) | 2010-04-15 | 2010-04-15 | Method for producing Al-Si-Cu alloy by electric heating method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103627901A (en) * | 2013-12-09 | 2014-03-12 | 谢廷声 | Nickel-copper containing silicon-based iron alloy for steelmaking and preparation method thereof |
| CN106148684A (en) * | 2016-08-01 | 2016-11-23 | 江苏省冶金设计院有限公司 | The method and system of comprehensive utilization red mud |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1314498A (en) * | 2001-03-01 | 2001-09-26 | 李文联 | Process for making Al-Si alloy |
| CN1594613A (en) * | 2004-06-29 | 2005-03-16 | 登封电厂集团铝合金有限公司 | Raw material for preparing aluminum-silicon alloy by electrothermal process |
| CN101270412A (en) * | 2008-04-17 | 2008-09-24 | 上海交通大学 | Method for producing using aluminum gray and coal gangue composite castoff |
-
2010
- 2010-04-15 CN CN201010147978A patent/CN101812590A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1314498A (en) * | 2001-03-01 | 2001-09-26 | 李文联 | Process for making Al-Si alloy |
| CN1594613A (en) * | 2004-06-29 | 2005-03-16 | 登封电厂集团铝合金有限公司 | Raw material for preparing aluminum-silicon alloy by electrothermal process |
| CN101270412A (en) * | 2008-04-17 | 2008-09-24 | 上海交通大学 | Method for producing using aluminum gray and coal gangue composite castoff |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103627901A (en) * | 2013-12-09 | 2014-03-12 | 谢廷声 | Nickel-copper containing silicon-based iron alloy for steelmaking and preparation method thereof |
| CN106148684A (en) * | 2016-08-01 | 2016-11-23 | 江苏省冶金设计院有限公司 | The method and system of comprehensive utilization red mud |
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Application publication date: 20100825 |