CN103602817A - High/low two-furnace low-temperature pre-impurity-removal process for secondary aluminium - Google Patents
High/low two-furnace low-temperature pre-impurity-removal process for secondary aluminium Download PDFInfo
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- CN103602817A CN103602817A CN201310566165.0A CN201310566165A CN103602817A CN 103602817 A CN103602817 A CN 103602817A CN 201310566165 A CN201310566165 A CN 201310566165A CN 103602817 A CN103602817 A CN 103602817A
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Abstract
The invention discloses a high/low two-furnace low-temperature pre-impurity-removal process for secondary aluminium, which relates to the technical field of metal smelting. A low-temperature melting furnace and a high-temperature melting furnace are selected; the relative position of the low-temperature melting furnace is higher than that of the high-temperature melting furnace, so that molten aluminum in the low-temperature melting furnace can automatically flow to the inside of the high-temperature melting furnace; the melting temperature of the low-temperature melting furnace is set at 590-620 DEG C, and the melting temperature of the high-temperature melting furnace is set at over 620 DEG C; and according to a characteristic that the melting point of the metal aluminum is low, high-melting-point impurities in the low-temperature melting furnace are removed, molten liquid in which most of impurities are removed flows into the high-temperature melting furnace from the low-temperature melting furnace, and residual impurities in the high-temperature melting furnace are removed by using a conventional chemical method or physical method. The process disclosed by the invention is simple in method and easy to operate; and impurity removal is performed according to different metal melting points, so that energy-saving effect is achieved, and the difficulty of smelting can be lowered.
Description
Technical field
The present invention relates to Metal smelting technical field, be specifically related to the pre-impurity removal process of a kind of secondary aluminum height twin furnace low temperature.
Background technology
Secondary aluminum is the indispensable resource of aluminium industrial sustainable development, compare with aluminum production, secondary aluminum per ton can be saved the energy and reach 95%, the noxious emissions such as carbonic acid gas greatly reduce, not only save energy, environment purification, the production cost that can also greatly reduce Al-alloy products, has good Social benefit and economic benefit.
Whole world secondary aluminum accounts for 45% of aluminium market aggregate demand, the raw material sources of aluminium scrap regeneration are complicated, of a great variety, inevitably can bring the inclusion of some amount into, especially the content of iron is higher, easily cause the defects such as generation in aluminium alloy cast ingot is loosened, slag inclusion, very large on the use properties impact of aluminium, high ferro aluminium can not directly be used.In secondary aluminum smelting process, impurity iron number very large to secondary aluminum quality influence, adopt chemical removal of iron agent (deferrization agent) cost high, easily increase the impurity component of secondary aluminum.
Summary of the invention
It is a kind of simple to operate that technical problem to be solved by this invention is to provide, the pre-impurity removal process of secondary aluminum height twin furnace low temperature of method uniqueness.
Technical problem to be solved by this invention realizes by the following technical solutions:
The pre-impurity removal process of a kind of secondary aluminum height twin furnace low temperature, select a low smelting heat stove and a high temperature melting furnace, the relative position of low smelting heat stove is higher than high temperature melting furnace, aluminium liquid in low smelting heat stove can be flowed in high temperature melting furnace voluntarily, the smelting temperature of described low smelting heat stove is set in to 590-620 degree Celsius, the smelting temperature of described high temperature melting furnace is set in more than 620 degrees Celsius, according to the low-melting feature of metallic aluminium, in low smelting heat stove, first remove dystectic impurity, the liquation of removing most impurity flows into high temperature melting furnace from low smelting heat stove, in high temperature melting furnace, with conventional chemical process or physical method, remove remaining impurity.
Between described low smelting heat stove and high temperature melting furnace, by a pipeline, connect, realize the circulation of aluminium liquid, on the surface of described pipeline, be provided with electromagnetic heater, for pipeline is carried out to Heat preservation, prevent that aluminium liquid from solidifying in flow process.
The invention has the beneficial effects as follows: the inventive method is simple, convenient operation, carries out removal of impurities according to the difference of melting point metal, so not only energy-conservation, and can reduce smelting difficulty.
Accompanying drawing explanation
Fig. 1 is smelting furnace distribution plan of the present invention.
Embodiment
For technique means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
As shown in Figure 1, the pre-impurity removal process of a kind of secondary aluminum height twin furnace low temperature, select a low smelting heat stove 1 and a high temperature melting furnace 2, the relative position of low smelting heat stove 1 is higher than high temperature melting furnace 2, make the aluminium liquid in low smelting heat stove 1 can flow into voluntarily in high temperature melting furnace 2, the smelting temperature of low smelting heat stove 1 is set in to 590-620 degree Celsius, the smelting temperature of high temperature melting furnace 2 is set in more than 620 degrees Celsius, according to the low-melting feature of metallic aluminium, in low smelting heat stove 1, first remove dystectic impurity, the liquation of removing most impurity flows into high temperature melting furnace 2 from low smelting heat stove, in high temperature melting furnace 2, with conventional chemical process or physical method, remove remaining impurity.Between low smelting heat stove 1 and high temperature melting furnace 2, by a pipeline 3, connect, realize the circulation of aluminium liquid, on the surface of pipeline 3, be provided with electromagnetic heater, for pipeline 3 is carried out to Heat preservation, prevent that aluminium liquid from solidifying in flow process.
More than show and described ultimate principle of the present invention and 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 in above-described embodiment and specification sheets, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, 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 (2)
1. the pre-impurity removal process of secondary aluminum height twin furnace low temperature, it is characterized in that: select a low smelting heat stove and a high temperature melting furnace, the relative position of low smelting heat stove is higher than high temperature melting furnace, aluminium liquid in low smelting heat stove can be flowed in high temperature melting furnace voluntarily, the smelting temperature of described low smelting heat stove is set in to 590-620 degree Celsius, the smelting temperature of described high temperature melting furnace is set in more than 620 degrees Celsius, according to the low-melting feature of metallic aluminium, in low smelting heat stove, first remove dystectic impurity, the liquation of removing most impurity flows into high temperature melting furnace from low smelting heat stove, in high temperature melting furnace, with conventional chemical process or physical method, remove remaining impurity.
2. the pre-impurity removal process of secondary aluminum according to claim 1 height twin furnace low temperature, it is characterized in that: between described low smelting heat stove and high temperature melting furnace, by a pipeline, connect, realize the circulation of aluminium liquid, surface at described pipeline is provided with electromagnetic heater, for pipeline is carried out to Heat preservation, prevent that aluminium liquid from solidifying in flow process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310566165.0A CN103602817A (en) | 2013-11-13 | 2013-11-13 | High/low two-furnace low-temperature pre-impurity-removal process for secondary aluminium |
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| CN201310566165.0A CN103602817A (en) | 2013-11-13 | 2013-11-13 | High/low two-furnace low-temperature pre-impurity-removal process for secondary aluminium |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924099A (en) * | 2014-03-27 | 2014-07-16 | 安徽省新方尊铸造科技有限公司 | Liquid-cooled electromagnet device used for deironing in smelting of molten aluminum |
| CN106868316A (en) * | 2017-02-10 | 2017-06-20 | 上海交通大学 | A kind of polynary impurity element synchronous purification method and device of secondary aluminium |
| CN113878265A (en) * | 2021-08-27 | 2022-01-04 | 深圳市欣宜创科技有限公司 | Quick preparation facilities of lead-free solder for electronic component welding |
| CN114231771A (en) * | 2021-12-17 | 2022-03-25 | 安徽百圣鑫金属科技有限公司 | High-performance aluminum alloy prepared from recycled aluminum and preparation method |
| CN114480875A (en) * | 2022-01-04 | 2022-05-13 | 安徽百圣鑫金属科技有限公司 | Processing technology of high-performance secondary aluminum |
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| CA2227126A1 (en) * | 1997-01-15 | 1998-07-15 | Bernd Kos | Process and device for melting light metals |
| CN1745287A (en) * | 2003-01-16 | 2006-03-08 | 高科技有限公司 | Plant with rotating furnace for the melting without salt of aluminium, with screening and recovery of the slags |
| CN102021349A (en) * | 2010-12-02 | 2011-04-20 | 亳州市正和铝业有限公司 | Secondary aluminum production process |
| CN102994777A (en) * | 2012-12-28 | 2013-03-27 | 云南铝业股份有限公司 | Electrolytic aluminum liquid purification method for producing ultra-wide double-zero aluminum foil |
| CN103146924A (en) * | 2013-03-18 | 2013-06-12 | 天津立中合金集团有限公司 | Multi-stage impurity removing and refining method in production process of secondary aluminum |
| CN103361487A (en) * | 2013-07-22 | 2013-10-23 | 南南铝业股份有限公司 | Production method of recycled aluminum |
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2013
- 2013-11-13 CN CN201310566165.0A patent/CN103602817A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CA2227126A1 (en) * | 1997-01-15 | 1998-07-15 | Bernd Kos | Process and device for melting light metals |
| CN1745287A (en) * | 2003-01-16 | 2006-03-08 | 高科技有限公司 | Plant with rotating furnace for the melting without salt of aluminium, with screening and recovery of the slags |
| CN102021349A (en) * | 2010-12-02 | 2011-04-20 | 亳州市正和铝业有限公司 | Secondary aluminum production process |
| CN102994777A (en) * | 2012-12-28 | 2013-03-27 | 云南铝业股份有限公司 | Electrolytic aluminum liquid purification method for producing ultra-wide double-zero aluminum foil |
| CN103146924A (en) * | 2013-03-18 | 2013-06-12 | 天津立中合金集团有限公司 | Multi-stage impurity removing and refining method in production process of secondary aluminum |
| CN103361487A (en) * | 2013-07-22 | 2013-10-23 | 南南铝业股份有限公司 | Production method of recycled aluminum |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924099A (en) * | 2014-03-27 | 2014-07-16 | 安徽省新方尊铸造科技有限公司 | Liquid-cooled electromagnet device used for deironing in smelting of molten aluminum |
| CN106868316A (en) * | 2017-02-10 | 2017-06-20 | 上海交通大学 | A kind of polynary impurity element synchronous purification method and device of secondary aluminium |
| CN113878265A (en) * | 2021-08-27 | 2022-01-04 | 深圳市欣宜创科技有限公司 | Quick preparation facilities of lead-free solder for electronic component welding |
| CN114231771A (en) * | 2021-12-17 | 2022-03-25 | 安徽百圣鑫金属科技有限公司 | High-performance aluminum alloy prepared from recycled aluminum and preparation method |
| CN114480875A (en) * | 2022-01-04 | 2022-05-13 | 安徽百圣鑫金属科技有限公司 | Processing technology of high-performance secondary aluminum |
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Application publication date: 20140226 |