JPS6352099B2 - - Google Patents
Info
- Publication number
- JPS6352099B2 JPS6352099B2 JP8421085A JP8421085A JPS6352099B2 JP S6352099 B2 JPS6352099 B2 JP S6352099B2 JP 8421085 A JP8421085 A JP 8421085A JP 8421085 A JP8421085 A JP 8421085A JP S6352099 B2 JPS6352099 B2 JP S6352099B2
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- flux
- parts
- weight
- alf
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000004907 flux Effects 0.000 claims description 28
- 238000007670 refining Methods 0.000 claims description 13
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 11
- 229910000838 Al alloy Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- 229910016569 AlF 3 Inorganic materials 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 5
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminium flouride Chemical compound F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 150000002222 fluorine compounds Chemical class 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 description 32
- 239000002184 metal Substances 0.000 description 32
- 238000003756 stirring Methods 0.000 description 20
- 238000000034 method Methods 0.000 description 11
- 239000002893 slag Substances 0.000 description 9
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 229910001873 dinitrogen Inorganic materials 0.000 description 4
- 230000020169 heat generation Effects 0.000 description 4
- 238000007872 degassing Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Description
（産業上の利用分野）
本発明は反射型溶解炉で溶湯撹拌を行ないなが
ら、溶解したアルミニウムおよびアルミニウム合
金溶湯の精錬を行なうに用いるフラツクスに関す
るものである。
（従来技術とその問題点）
反射型溶解炉で溶解直後のアルミニウムおよび
アルミニウム合金溶湯は、水素ガス、酸化物等の
介在物が共存するため、鋳造工程に先立ち脱ガス
および脱介在物の処理が必要である。このため、
通常フラツクスを投入して酸化物等と溶湯との濡
れ性を低下させ、かつ酸化物等とのかさ比重をも
小さくし、除滓を容易にするため、酸化物と混在
して溶湯表面に浮上存在する微量のメタル分を溶
湯温度により発熱したフラツクスとの反応により
燃焼させる方法が用いられている。しかしなが
ら、現在反射型溶解炉の溶湯成分の均一化のた
め、溶湯撹拌法が導入されつつあり、酸化物が浮
上存在する溶湯表面の温度が約50℃以上低下す
る。このため、除滓に必要な発熱反応が生じず、
酸化物等と溶湯との分離が悪くなつて、除滓作業
効率が低下する原因となつている。
（本発明の課題）
本発明の第一の課題は現在使用されている反射
型溶解炉の溶湯撹拌法において溶湯表面撹拌下に
効率良く除滓することのできるフラツクスを提供
することにある。
本発明の第二の課題は単に溶湯表面に散布する
だけでも除滓に必要な発熱反応が生ずる反応性に
優れたフラツクスを提供することにある。
（本発明の要旨）
本発明は弗化物AlF3100重量部に対し塩化物
KCl110〜140重量部、助燃剤として硫酸塩20〜50
重量部を配合してなることを特徴とするアルミニ
ウムおよびアルミニウム合金精錬用フラツクス、
および上記フラツクスの弗化物分AlF3の一部を
反応性に富んだ複合弗化物K2AlF6にて置換して
なり、弗化物100重量部に対し塩化物130〜140重
量部、助燃剤として硫酸塩20〜50重量部を配合し
てなることを特徴とするアルミニウムおよびアル
ミニウム合金精錬用フラツクスにある。
アルミニウムおよびアルミニウム合金反射炉精
錬において、KCl−AlF3系フラツクスが汎用さ
れているが、溶湯撹拌法においては比較例に示す
ように、ある限定された範囲において着火状態が
普通であるにすぎず、発熱状態にあつては全ての
範囲において否であるが、助燃剤として一般に使
用されている硫酸塩、炭酸塩、硝酸塩等の内、特
に硫酸塩を添加配合すると、フラツクス散布後の
溶湯表面での撹拌により除滓にとつて好ましい発
熱状態が得られる。
さらに、弗化物AlF3の一部をより反応性に富
んだ複合弗化物K2AlF6に置換すると、フラツク
ス散布するだけで発熱反応が開始されることが見
出されている。
本発明で使用する硫酸塩としては、K2SO4が好
ましい。
本発明に係るフラツクスは、アルミニウムおよ
びアルミニウム合金を反射型溶解炉において溶湯
撹拌法にて精錬する場合において使用するに適す
る。その使用条件は精錬開始直前における溶湯の
温度を700〜750±10℃とするのが好ましい。
本発明に係るフラツクスを散布後、溶湯表面は
適宜必要に応じ撹拌されるが、撹拌方法は電磁撹
拌、溶湯ポンプ撹拌、不活性ガス吹き込み撹拌等
が使用されてよいが、反応炉（30トン）に対して
はフラツクス散布を兼ねて約４分間、鉄パイプよ
り窒素ガスを毎分100〜3000Nl流し、これで溶湯
表面を撹拌するのがよい。
（実施例 １）
溶解炉 30トン反射型
溶湯品種 JIS 3004
溶湯温度 電磁撹拌により700±２℃
フラツクス組成 KCl−AlF3−K2SO4系
配合比率 第１表および第２表に示す通
り
使用量 30Kg
散布方法 窒素ガスによる吹き込み
(Field of Industrial Application) The present invention relates to a flux used for refining molten aluminum and molten aluminum alloy while stirring the molten metal in a reflective melting furnace. (Prior art and its problems) Aluminum and aluminum alloy molten metal immediately after being melted in a reflective melting furnace contains inclusions such as hydrogen gas and oxides, so it is necessary to degas and remove inclusions prior to the casting process. is necessary. For this reason,
Normally, flux is added to reduce the wettability of oxides, etc. with the molten metal, and also to reduce the bulk specific gravity with oxides, etc., and to make it easier to remove slag, it mixes with the oxides and floats to the surface of the molten metal. A method is used in which the small amount of metal present is combusted by reaction with flux generated by the temperature of the molten metal. However, in order to homogenize the molten metal composition in reflective melting furnaces, a molten metal stirring method is currently being introduced, which lowers the temperature of the molten metal surface where oxides float by about 50°C or more. Therefore, the exothermic reaction necessary for slag removal does not occur,
Separation of oxides, etc. and molten metal becomes poor, which causes a decrease in slag removal work efficiency. (Objectives of the present invention) The first object of the present invention is to provide a flux that can be efficiently removed while stirring the surface of the molten metal in the molten metal stirring method of the currently used reflective melting furnace. A second object of the present invention is to provide a flux with excellent reactivity that causes the exothermic reaction necessary for slag removal even when simply sprinkled on the surface of the molten metal. (Summary of the present invention) The present invention provides a method for adding chloride to 100 parts by weight of fluoride AlF3 .
110-140 parts by weight of KCl, 20-50 parts of sulfate as a combustion improver
A flux for refining aluminum and aluminum alloys, characterized in that it contains parts by weight,
A part of the fluoride content AlF 3 of the above flux is replaced with a highly reactive composite fluoride K 2 AlF 6 , and 130 to 140 parts by weight of chloride is used as a combustion improver for 100 parts by weight of fluoride. A flux for refining aluminum and aluminum alloys, characterized in that it contains 20 to 50 parts by weight of sulfate. In refractory furnace refining of aluminum and aluminum alloys, KCl-AlF 3- based flux is widely used, but in the molten metal stirring method, as shown in the comparative example, ignition is only common within a certain limited range. In the case of exothermic conditions, it is negative in all ranges, but among the sulfates, carbonates, nitrates, etc. that are commonly used as combustion improvers, especially when sulfates are added and blended, the molten metal surface after flux spraying becomes negative. Stirring provides a favorable exothermic state for slag removal. Furthermore, it has been found that when part of the fluoride AlF 3 is replaced with a more reactive complex fluoride K 2 AlF 6 , an exothermic reaction can be initiated simply by spraying flux. As the sulfate used in the present invention, K 2 SO 4 is preferred. The flux according to the present invention is suitable for use in refining aluminum and aluminum alloys by a molten metal stirring method in a reflective melting furnace. The conditions for its use are preferably such that the temperature of the molten metal immediately before the start of refining is 700 to 750±10°C. After dispersing the flux according to the present invention, the surface of the molten metal is stirred as necessary. Electromagnetic stirring, molten metal pump stirring, inert gas blowing stirring, etc. may be used as the stirring method. For this purpose, it is best to flow 100 to 3000 Nl of nitrogen gas per minute from an iron pipe for about 4 minutes, also serving as flux dispersion, and stir the surface of the molten metal with this. (Example 1) Melting furnace 30 tons reflective type Molten metal type JIS 3004 Molten metal temperature 700±2℃ by electromagnetic stirring Flux composition KCl-AlF 3 -K 2 SO 4 system Mixing ratio As shown in Tables 1 and 2 Amount used 30Kg Spraying method Nitrogen gas blowing
【表】【table】
【表】
かかる精錬方法では撹拌を伴わないと発火状態
および着火状態は否であつたが、フラツクス散布
を兼ねて４分間、鉄パイプより窒素ガスを毎分
100〜3000Nl流し、これで溶湯表面を撹拌する
と、発熱状態および着火状態は良好となつた。
（実施例 ２）
フラツクス組成を下記第３表および第４表に示
す通りとする以外は実施例１と同様にして精錬を
行なつた。[Table] In this refining method, it was impossible to ignite or ignite without stirring, but nitrogen gas was blown every minute from an iron pipe for 4 minutes to also serve as flux dispersion.
When 100 to 3000 Nl was poured and the surface of the molten metal was stirred, the heat generation and ignition conditions became good. (Example 2) Refining was carried out in the same manner as in Example 1 except that the flux composition was as shown in Tables 3 and 4 below.
【表】【table】
【表】
本フラツクス組成では電磁撹拌以外に特に溶湯
表面を撹拌せずとも、良好な発熱状態および着火
状態が得られた。
（実施例 ３）
溶湯品種をJIS 1100、JIS 2014とし、精錬の溶
湯温度を713±３℃とし、実施例２と同様にして
15分間精錬した。その結果、脱ガスおよび脱介在
物状態は検査合格であり、良好な除滓が行なわれ
ていた。
（実施例 ４）
溶湯品種JIS 3004、JIS 1100、JIS 2014に対し
てフラツクス（吹き込み量10Kg）を窒素ガス（圧
力0.2Kg／cm2、流量600Nl／分）で吹き込み、溶湯
表面を撹拌する以外は実施例３と同様にして精錬
した。その結果、フラツクス使用量は略３分の１
量にて脱ガスおよび脱介在物状態は検査合格であ
り、良好な除滓が行なわれていることがわかつ
た。
（比較例）
下記に示すKCl−AlF3系組成のフラツクスを
使用する以外は実施例１と同様にして精錬を行な
つたが、溶湯撹拌を伴つても除滓を行なうに充分
に良好な発熱状態および着火状態が得られず、反
射炉における溶湯撹拌法による精錬には使用でき
なかつた。[Table] With this flux composition, good heat generation and ignition conditions were obtained without stirring the molten metal surface other than electromagnetic stirring. (Example 3) The molten metal type was JIS 1100 and JIS 2014, the molten metal temperature during refining was 713±3℃, and the same procedure as in Example 2 was carried out.
Smelted for 15 minutes. As a result, the degassing and inclusions removal conditions passed the inspection, and slag removal was performed satisfactorily. (Example 4) Flux (injection amount 10 kg) was blown into molten metal types JIS 3004, JIS 1100, and JIS 2014 with nitrogen gas (pressure 0.2 kg/cm 2 , flow rate 600 Nl/min), except that the surface of the molten metal was stirred. It was refined in the same manner as in Example 3. As a result, the amount of flux used was reduced to approximately one-third.
The amount of degassing and removal of inclusions passed the inspection, indicating that good sludge removal was being performed. (Comparative example) Refining was carried out in the same manner as in Example 1 except that the flux with the KCl-AlF 3 composition shown below was used, but the heat generation was sufficiently good to remove slag even when stirring the molten metal. It could not be used for refining using the molten metal stirring method in a reverberatory furnace because it could not reach the desired state and ignition state.
【表】
（発明の作用効果）
以上の説明で明らかなように、本発明に係るフ
ラツクスを使用すれば、従来のフラツクスでは除
滓が困難であつた反射炉における溶湯撹拌法によ
る精錬であつても、良好な発熱状態および着火状
態が得られ、良好な除滓が行なわれ、脱ガスおよ
び脱介在物状態は良好となる。特に、弗化物の一
部を反応性の高い複合弗化物で置換して用いる
と、溶湯表面を撹拌せずとも良好な除滓が可能で
あり、溶湯撹拌を行なうと、比較的少量の使用量
で所定の除滓が行なわれる。[Table] (Operations and Effects of the Invention) As is clear from the above explanation, by using the flux according to the present invention, it is possible to perform smelting using the molten metal stirring method in a reverberatory furnace, which was difficult to remove with conventional fluxes. Also, good heat generation and ignition conditions are obtained, good slag removal is performed, and good degassing and inclusion removal conditions are obtained. In particular, when a part of the fluoride is replaced with a highly reactive composite fluoride, it is possible to remove slag effectively without stirring the molten metal surface. Predetermined sludge removal is performed.
Claims (1)
〜140重量部、助燃剤として硫酸塩20〜50重量部
を配合してなることを特徴とするアルミニウムお
よびアルミニウム合金精錬用フラツクス。 ２ 硫酸塩としてK2SO4を用いる前記第１項記載
のフラツクス。 ３ 弗化物AlF3およびK2AlF6合計100重量部に
対し塩化物KCl130〜140重量部、助燃剤として硫
酸塩20〜50重量部を配合してなることを特徴とす
るアルミニウムおよびアルミニウム合金精錬用フ
ラツクス。 ４ 硫酸塩としてK2SO4を用いる前記第３項記載
のフラツクス。 ５ 弗化物AlF3および複合弗化物K2AlF6の配合
比が略等量である前記第３項または第４項記載の
フラツクス。[Claims] 1. Chloride KCl110 per 100 parts by weight of fluoride AlF3
A flux for refining aluminum and aluminum alloys, characterized in that it contains ~140 parts by weight and 20 to 50 parts by weight of sulfate as a combustion improver. 2. The flux according to item 1 above, which uses K 2 SO 4 as the sulfate. 3. For refining aluminum and aluminum alloys, comprising 130 to 140 parts by weight of chloride KCl and 20 to 50 parts by weight of sulfate as a combustion improver to a total of 100 parts by weight of fluorides AlF 3 and K 2 AlF 6 . Flux. 4. The flux according to item 3 above, which uses K 2 SO 4 as the sulfate. 5. The flux according to item 3 or 4 above, wherein the fluoride AlF 3 and the composite fluoride K 2 AlF 6 are mixed in approximately equal amounts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8421085A JPS61243136A (en) | 1985-04-18 | 1985-04-18 | Flux for refining aluminum and aluminum alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8421085A JPS61243136A (en) | 1985-04-18 | 1985-04-18 | Flux for refining aluminum and aluminum alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61243136A JPS61243136A (en) | 1986-10-29 |
| JPS6352099B2 true JPS6352099B2 (en) | 1988-10-18 |
Family
ID=13824116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8421085A Granted JPS61243136A (en) | 1985-04-18 | 1985-04-18 | Flux for refining aluminum and aluminum alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61243136A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6479329A (en) * | 1987-09-18 | 1989-03-24 | Kobe Steel Ltd | Method for refining molten al or molten al alloy |
| JPH02270924A (en) * | 1989-04-13 | 1990-11-06 | Kobe Steel Ltd | Method for refining molten aluminum and aluminum alloy |
| JPH05331568A (en) * | 1992-05-29 | 1993-12-14 | Kobe Steel Ltd | Flux for melting al or al alloy at low temperature and melting method using the flux |
| JP3668081B2 (en) | 1998-12-25 | 2005-07-06 | 株式会社神戸製鋼所 | Method for refining molten aluminum alloy and flux for refining molten aluminum alloy |
| JP4274142B2 (en) | 2005-04-07 | 2009-06-03 | 日本軽金属株式会社 | Non-sodium-based flux and method for treating molten aluminum alloy using the same |
| JP5576701B2 (en) * | 2010-04-23 | 2014-08-20 | 東洋アルミニウム株式会社 | Method for melting aluminum powder |
-
1985
- 1985-04-18 JP JP8421085A patent/JPS61243136A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61243136A (en) | 1986-10-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH05507764A (en) | Compositions and methods for synthesizing Tribe slag, compositions and methods for treating Tribe slag, and compositions and methods for refractory lining coatings. | |
| US3258328A (en) | Method and apparatus for treating steel | |
| JPS6386830A (en) | Method for casting aluminum alloy ingot | |
| JPS6352099B2 (en) | ||
| US3897244A (en) | Method for refining iron-base metal | |
| US3240591A (en) | Manufacture of ferromanganese alloy | |
| US2760859A (en) | Metallurgical flux compositions | |
| CN115652184A (en) | Method for smelting ultrapure ferrite stainless steel by using slag melting agent in AOD converter | |
| CN115821083A (en) | A kind of aluminum-niobium master alloy and preparation method thereof | |
| JP2004277776A (en) | Method of refining aluminum alloy molten metal and flux for refining aluminum alloy molten metal | |
| US3881917A (en) | Method of refining steel | |
| JPH05202434A (en) | Melting method of aluminum and aluminum alloy | |
| JP2021176980A (en) | Electric furnace steelmaking process | |
| KR100224635B1 (en) | Slag deoxidation material for high purity steel making | |
| JPH0585609B2 (en) | ||
| JPH0137450B2 (en) | ||
| CN115198100B (en) | A kind of red mixed copper additive for removing nickel/bismuth and its preparation method and application | |
| SU1344785A1 (en) | Slag=forming mixture | |
| US3549338A (en) | Welding wire | |
| JPS5934767B2 (en) | Method for removing impurities from metals or alloys | |
| US3556774A (en) | Process for the reduction of molten iron ore | |
| SU1219652A1 (en) | Charges for alloying steel | |
| JPH0377262B2 (en) | ||
| JP2778854B2 (en) | Melting method of aluminum alloy | |
| SU1076460A1 (en) | Synthetic slag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |