CN103184350A - Molten aluminum denickel agent - Google Patents
Molten aluminum denickel agent Download PDFInfo
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- CN103184350A CN103184350A CN2011104593591A CN201110459359A CN103184350A CN 103184350 A CN103184350 A CN 103184350A CN 2011104593591 A CN2011104593591 A CN 2011104593591A CN 201110459359 A CN201110459359 A CN 201110459359A CN 103184350 A CN103184350 A CN 103184350A
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- aluminium liquid
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- zirconium
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Abstract
The invention discloses a molten aluminum denickel agent which comprises the components of 50%-80% of zirconium-containing compound, 10%-35% of activated aluminum oxide and 5%-15% of bentonite in mass percentage, wherein the zirconium-containing compound comprises at least one of potassium fluozirconate, zirconium chloride and zirconium dioxide. The molten aluminum denickel agent reduces the content of nickel in virgin aluminum and improves the quality of the virgin aluminum on the premise of not increasing the energy consumption.
Description
Technical field
The present invention relates to aluminum metal impurity removing technology field, particularly a kind of aluminium liquid of nickel content in the primary aluminum that can reduce is except the nickel agent.
Background technology
Impurity nickel in the primary aluminum is mainly derived from the aluminium carbon anode, is to enter along with the consumption of anode in the aluminium liquid, and nickel content is generally very little in the primary aluminum.If nickel content surpasses certain limit, will the quality of primary aluminum be produced a very large impact: reduce the erosion resistance of aluminum products on the one hand, influence its work-ing life; Nickel has carcinogenesis as heavy metal to human body on the other hand, has therefore limited the application of aluminum in industries such as food, tap water.Thereby the nickel element content in the strict control primary aluminum is conducive to improve the quality of primary aluminum, and can expand its range of application.
Nickel content generally more than 100ppm, does not have directly to reduce at present the method for nickel content in the primary aluminum in the primary aluminum.The existing usefulness of producing rafifinal has three layers of liquid electrorefining except nickel technology, segregation method etc., the content of nickel can be dropped to below the 60ppm, but these methods need consume a large amount of energy, production cost is higher very high, reduces separately the content of nickel element in the primary aluminum then input-output are not obviously calculated if only be.
Therefore, very vigorous except the demand of nickel agent for aluminium liquid cheap, that be beneficial to the production input in the market.
Summary of the invention
The invention provides a kind of aluminium liquid except the nickel agent, under the prerequisite that does not increase energy consumption, reduced the content of the nickel element in the primary aluminum, improved the primary aluminum quality.
Technical scheme of the present invention is:
A kind of aluminium liquid is except the nickel agent, and its component and mass percent are: zirconium-containing compound 50%-80%, activated alumina 10%-35%, wilkinite 5-15%, described zirconium-containing compound comprise at least a in potassium fluozirconate, zirconium chloride, the zirconium dioxide.
Preferably, the mass percent of described activated alumina is 20%-30%.
Preferably, the mass percent of described zirconium-containing compound is 60%-70%.
Preferably, described aluminium liquid is joined in the aluminium liquid except nickel agent mass ratio 0.1%.
Preferably, before refining, add described aluminium liquid except the nickel agent.
Aluminium liquid provided by the invention has following advantage except the nickel agent:
1, reduce nickel content: a, wilkinite (Bentonite) are the moisture clay pits based on montmorillonite, press from both sides the 2:1 type crystal structure that the layer of aluminum oxygen octahedras are formed by two silicon-oxy tetrahedrons, some positively charged ion that exists on it and the effect of montmorillonite structure cell are very insecure, easily by other cationic exchange, so wilkinite has ion exchangeable preferably; And there are a lot of micropores in the surface of activated alumina, and surface-area is very big; Therefore, activated alumina and wilkinite all are that nickel is had strong adsorbing material, thereby reduce the nickel content in the aluminium liquid; Zirconium-containing compounds such as b, potassium fluozirconate, zirconium chloride, zirconium dioxide can and aluminium liquid form compound between high-density and solubleness is little in aluminium liquid Zr-Al-Ni high desnity metal, density is the twice of aluminium liquid, dissolving hardly in aluminium liquid; Therefore, these intermetallic compounds also gradually sedimentation go out aluminium liquid, reach the effect except nickel.
2, inclusion-free: wilkinite, active oxidation aluminum depending physical property absorbed Ni element, zirconium-containing compound has formed the intermetallic compound that is insoluble to aluminium liquid, can be cleaned out aluminium liquid in the follow-up operation of skimming, the hydrogen in the aluminium liquid and inclusion do not have obvious increase.
3, do not increase energy consumption: should be extensive except nickel agent raw material sources, configuration is simple; Before refining, add in the aluminium liquid and can play effectiveness environmental protection.
Embodiment
Do further detailed description below in conjunction with the technical solution of the present invention of embodiment, but embodiments of the present invention are not limited thereto.
Embodiment 1
, join in the aluminium liquid by mass ratio 0.1% for except the nickel agent with activated alumina 35%, wilkinite 15%, potassium fluozirconate 50%, temperature of aluminum liquid is 780 ℃, stirs 15min, adds commercially available refining agent refining again, and nickel content is down to 55ppm by 127ppm in the aluminium liquid.
Embodiment 2
, join in the aluminium liquid by mass ratio 0.1% for except the nickel agent with activated alumina 25%, wilkinite 15%, zirconium chloride 60%, temperature of aluminum liquid is 786 ℃, stirs 15min, adds commercially available refining agent refining again, and nickel content is down to 50ppm by 109ppm in the aluminium liquid.
Embodiment 3
, join in the aluminium liquid by mass ratio 0.1% for except the nickel agent with activated alumina 15%, wilkinite 15%, zirconium dioxide 70%, temperature of aluminum liquid is 791 ℃, stirs 15min, adds commercially available refining agent refining again, and nickel content is down to 60ppm by 96ppm in the aluminium liquid.
Embodiment 4
With activated alumina 20%, wilkinite 5%, potassium fluozirconate and zirconium dioxide 75% for except the nickel agent, join in the aluminium liquid by mass ratio 0.1%, temperature of aluminum liquid is 782 ℃, stirs 15min, add commercially available refining agent refining again, nickel content is down to 52ppm by 93ppm in the aluminium liquid.
Embodiment 5
With activated alumina 10%, wilkinite 10%, potassium fluozirconate and zirconium white 80% for except the nickel agent, join in the aluminium liquid by mass ratio 0.1%, temperature of aluminum liquid is 780 ℃, stirs 15min, add commercially available refining agent refining again, nickel content is down to 50ppm by 102ppm in the aluminium liquid.
Embodiment 6
With activated alumina 30%, wilkinite 5%, potassium fluozirconate and zirconium white 65% for except the nickel agent, join in the aluminium liquid by mass ratio 0.1%, temperature of aluminum liquid is 788 ℃, stirs 15min, add commercially available refining agent refining again, nickel content is down to 54ppm by 99ppm in the aluminium liquid.
Embodiment 7
With activated alumina 35%, wilkinite 10%, potassium fluozirconate and zirconium white 55% for except the nickel agent, join in the aluminium liquid by mass ratio 0.1%, temperature of aluminum liquid is 784 ℃, stirs 15min, add commercially available refining agent refining again, nickel content is down to 53ppm by 93ppm in the aluminium liquid.
More than a kind of aluminium liquid that the embodiment of the invention is provided be described in detail except the nickel agent, used specific case herein principle of the present invention and embodiment set forth, only be used for helping to understand core concept of the present invention; Should not be construed as limitation of the present invention.
Claims (5)
1. an aluminium liquid is except the nickel agent, it is characterized in that, its component and mass percent are: zirconium-containing compound 50%-80%, activated alumina 10%-35%, wilkinite 5-15%, described zirconium-containing compound comprise at least a in potassium fluozirconate, zirconium chloride, the zirconium dioxide.
2. a kind of aluminium liquid according to claim 1 is characterized in that except the nickel agent mass percent of described activated alumina is 20%-30%.
3. a kind of aluminium liquid according to claim 1 is characterized in that except the nickel agent mass percent of described zirconium-containing compound is 60%-70%.
4. according to the application of each described a kind of aluminium liquid of claim 1 to 3 except the nickel agent, it is characterized in that, described aluminium liquid is joined in the aluminium liquid except nickel agent mass ratio 0.1%.
5. a kind of aluminium liquid according to claim 4 is characterized in that except the application of nickel agent, adds described aluminium liquid except the nickel agent before refining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110459359.1A CN103184350B (en) | 2011-12-31 | 2011-12-31 | A kind of aluminium liquid is except nickel agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110459359.1A CN103184350B (en) | 2011-12-31 | 2011-12-31 | A kind of aluminium liquid is except nickel agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103184350A true CN103184350A (en) | 2013-07-03 |
| CN103184350B CN103184350B (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110459359.1A Active CN103184350B (en) | 2011-12-31 | 2011-12-31 | A kind of aluminium liquid is except nickel agent |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4261746A (en) * | 1979-10-30 | 1981-04-14 | American Can Company | Flux |
| CN101967565A (en) * | 2010-10-28 | 2011-02-09 | 湖南晟通科技集团有限公司 | Refining agent for aluminum and aluminum alloy |
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2011
- 2011-12-31 CN CN201110459359.1A patent/CN103184350B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4261746A (en) * | 1979-10-30 | 1981-04-14 | American Can Company | Flux |
| CN101967565A (en) * | 2010-10-28 | 2011-02-09 | 湖南晟通科技集团有限公司 | Refining agent for aluminum and aluminum alloy |
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| Publication number | Publication date |
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| CN103184350B (en) | 2015-09-30 |
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Address after: Taoyuan County in Hunan province Changde city 415700 disk town Chuangyuan Industrial Park Patentee after: Suntown Technology Group Corporation Address before: Sheng Tong Industrial Park No. 109 Venus Road 410200 in Hunan province Changsha District of Wangcheng City Patentee before: Hunan Shengtong Technology Group Co., Ltd. |