CN86103277A - Remove the method for iron and titanium impurities and refining eutectic aluminium-silicon alloy - Google Patents
Remove the method for iron and titanium impurities and refining eutectic aluminium-silicon alloy Download PDFInfo
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Abstract
A kind of method of removing iron and titanium impurities and refining cocrystallized Al-Si alloy comprises: al-si eutectic alloys with chromium is melted in manganese, the gained melt is cooled to 590～660 ℃ and at the chilled melt of said temperature scope inner filtration, wherein use chromium and titanium with such quantity, promptly the mass ratio at chromium and manganese equals (0.1～20): 1 o'clock, make chromium and manganese quality and with the quality of iron and titanium and ratio be (0.2～1.1): 1.
Description
The present invention relates to nonferrous metallurgy and Mechanical engineering, or rather, relate to the method for removing iron and titanium impurities and refining eutectic aluminium-silicon alloy.When the high density state, find that these impurity are unfavorable for industrial property (G.B.Stroganov, the V.A.Rotenberg of aluminum silicon alloy, G.B.Gershman " aluminum silicon alloy " pp.127,128,132-134,1977 by the publication of Moscow " metallurgy " press).After carrying out alloying smelting, in automobile, tractor and associating industry thereof, the purified aluminum silicon alloy is used to cast various complex structural members, for example, and the piston of oil engine and cylinder head, high-pressure pump housing.
The method of removing de-iron and titanium impurities and refining cocrystallized Al-Si alloy is well-known in existing technology, technology: promptly the mass ratio at chromium and manganese is (0.5～1): 1 o'clock, must press chromium and manganese quality and with the quality of iron and titanium impurity and ratio be (1.2～2.0): 1, al-si eutectic alloys with chromium and manganese are melted in together, solid aluminium are joined in the melt that is produced again, make above-mentioned melt be cooled to 615～620 ℃.The process characteristic that melt is cooled to said temperature is, the formation of the formation of iron, chromium, manganese, aluminium and silicon intermetallic compound and titanium, chromium, manganese, aluminium and silicon intermetallic compound.Then, at the chilled melt of said temperature scope inner filtration.So that remove the iron and the titanium (inventor's certificate USSRNo1108122, IPCC22C1/06, " finding invention " communique No30,1984) of sneaking in the above-mentioned intermetallic compound.
Notice that the method for this well-known refining eutectic aluminium-silicon alloy has following shortcoming:
1. remove iron and the titanium stage in the compound between tramp m. at the aluminum filtration silicon melt, the yield of aluminium silicon melt is low.Iron before filtering in the aluminium silicon melt and titanium content be respectively 2% and the 1%(quality) time, the yield of aluminium silicon melt is 88.1%, and 11.9% melt has lost as the residue on the strainer.Residue is the mechanical mixture of intermetallic compound and some amount crystalline aluminium silicon alloy.In the case, the aluminium content height in the strainer residue reaches the 80.3%(quality).The consumption of aluminium when this shortcoming increases the initial cost of refining eutectic aluminium-silicon alloy and produces alloy.
2. participate in the consumption height of the expensive metal (chromium and manganese) of the above-mentioned intermetallic compound of formation.So the iron of every removal 1 unit mass and titanium need be imported the chromium and the manganese of 1.2～2.0 unit masses, this also can increase the initial cost of refined aluminum silicon alloy.
3. especially when the high aluminum silicon alloy of refined iron and titanium content, cocrystallized Al-Si alloy remove iron and titanium purified degree low.For example, the iron before filtering in the aluminium silicon melt and the content of titanium are respectively the 0.8%(quality) and the 0.4%(quality), the quality of chromium and manganese and with the quality of iron and titanium and ratio be that 1.2: 1 and the mass ratio of chromium and manganese are when being 0.5: 1, it is 27.5% that the eutectic aluminum-silicon melt is removed iron purified degree, and eutectic aluminum-silicon melt removal titanium purified degree is 67.5%.
The refining degree of aluminum silicon alloy is low will to cause the refined aluminum silicon alloy industrial property of being produced poor.
Specific purposes of the present invention are, solve the problem of removing in iron and the titanium impurities and refining aluminum silicon alloy method, between chromium, manganese, iron and titanium, select such mass ratio, with the yield, the consumption that reduces expensive metal chromium and manganese that improve filtration stage aluminium silicon melt, improve the refined aluminum silicon alloy and remove the degree of iron and titanium impurity, improve the quality of refined alloy simultaneously.
Can solve the problem in the method for above-mentioned removal iron and titanium impurities and refining aluminum silicon alloy by following way, make al-si eutectic alloys with chromium and manganese be melted in together, make the gained melt to be cooled to 590～660 ℃ and at the chilled melt of said temperature scope inner filtration, when using method of the present invention, the mass ratio of employed chromium and manganese is (0.1～20): 1, simultaneously the quality of chromium and manganese and with the quality of iron and titanium impurity and ratio be (0.2～1.1): 1.
Use chromium and manganese by such quantity, promptly the mass ratio at chromium and manganese is (0.1～20): 1 o'clock, the quality of chromium and manganese and with the quality of iron and titanium and ratio be (0.2～1.1): 1, help the yield of filtration stage aluminium silicon melt is brought up to the 98.8%(aluminium content decreased average 15.4% in the strainer residue simultaneously), the total flow of chromium and manganese reduces nearly 4.75 times, remove from cocrystallized Al-Si alloy that iron purified degree brings up to 80.5%, the refining degree of removing titanium brings up to 94%, improves the quality of refined alloy simultaneously.For example, along with the iron level in the aluminum silicon alloy from the 0.7%(quality) drop to the 0.37%(quality), titanium content is from the 0.25%(quality) drop to the 0.06%(quality), the unit elongation of refined alloy is increased to 3.7% from 2.5%, has just increased by 0.5 times.
The advantage of the method for the invention described above is owing to following reason.
When functional quality than for (0.1～20): 1 chromium and manganese, and their quality and with the quality of iron and titanium impurity and ratio be (0.2～1.1): 1 o'clock, chilled aluminium silicon melt contained the intermetallic compound of enumerating just like table 1.
Table 1
The chemical ingredients of NN intermetallic compound intermetallic compound [the %(quality)]
Al Si Fe Ti Cr Mn
1.Cr
0，05Fe
0，5Al
1，5Si 40，9 28，7 27，7 - 2，5 -
2.Cr
0，03Fe
0，5Al
1，1Si
1，430，3 38，5 29，2 - 2，0 -
3.Fe
0，5Cr
0，03Mn
0，02Al
1，5Si 41，1 28，8 27，5 - 1，5 1，1
4.Fe
0，5Cr
0，01Mn
0，02Al
1，1Si
1，430，9 38，5 28，3 - 1，0 1，3
5.Fe
0，3Cr
0，4Si
1，1Ti
0，6- 30，5 17，5 28，1 20，9 -
6.Fe
0，4Cr
0，2Mn
0，1Si
1，2Ti
0，6- 34，0 20，1 26，8 11，3 7，8
7.Cr
0，3TiSi
1，3- 35，7 - 48，8 15，5 -
8.Cr
0，3Ti
0，7Si
0，8Al
1，130，5 22，8 - 31，5 15，2 -
9.Fe
0，4Cr
0，08Mn
0，07Al
1，3SiTi
0，330，5 28，5 20，2 12，5 4，2 4，1
10.Fe
0，4Cr
0，1AlSi
1，1Ti
0，325，8 31，0 23，2 14，8 5，2 -
The formation of the intermetallic compound of this composition of more than enumerating is best.
The above-mentioned intermetallic compound of quoting as proof during cooling crystallizes into large-sized polyhedron, spheroid and dendrite, and is filtering removal iron and titanium stage, is easy to separate with chilled cocrystallized Al-Si alloy.
When using the method for known removal iron of past and titanium impurities and refining cocrystallized Al-Si alloy, it is as follows that table 2 is listed the metallic compound that forms in its refrigerative aluminium silicon melt.Table 2
The chemical ingredients of NN intermetallic compound intermetallic compound [the %(quality)]
Al Si Fe Ti Cr Mn
1 2 3 4 5 6 7 8
1.Cr
0，4Mn
0，2Al
2，1Si
0，458，2 10，5 - - 20，1 11，2
2.CrAl
778，4 - - - 21，6 -
3.Cr
0，05Mn
0，2Al
3，287，0 - - - 2，5 10，5
4.Cr
0，6Al
2Si
0，652，7 16，7 - - 31，0 -
5.MnAl
674，6 - - - - 25，4
6.Mn
0，5Al
2，2Si
0，460，3 12，4 - - - 25，4
7.Cr
0，2Fe
0，4Al
2，3Si
0，461，3 9，7 20，9 - 8，1 -
8.Cr
0，3Fe
0，3Al
1，7Si
0，946，0 24，1 14，8 - 15，1 -
9.Fe
0，3Cr
0，2Mn
0，1Al
2，2Si
0，460，1 10，7 14，0 - 8，0 7，2
10.Fe
0，2Cr
0，2Mn
0，2Al
1，7Si
0，945，6 24，0 12，1 - 8，8 9，5
11.Fe
0，2Mn
0，3Al
2，4Si
0，364，6 8，9 11，1 - - 15，4
12.Fe
0，1Cr
0，6Si
1，7Ti
0，3- 47，2 4，7 15，2 32，9 -
13.Fe
0，1Cr
0，3Mn
0，3Si
1，8Ti
0，3- 48，8 7，1 13，8 15，0 15，3
14.Cr
0，5Ti
0，5Si
0，4Al
1，541，2 11，6 - 22，0 25，2 -
15.Fe
0，2Cr
0，2Mn
0，2Al
1，4SiTi
0，138，7 25，9 10，5 6，3 10，1 8，5
16.Fe
0，5Cr
0，3Al
1，5Si
0，8Ti
0，240，1 21，2 12，6 10，3 15，8 -
At aluminium silicon melt filtration stage is to remove iron and titanium impurity the intermetallic compound listed from table 1 (rather than from table 2 listed intermetallic compound), assurance reaches (solution) above-mentioned purpose (problem), because use the intermetallic compound that forms in the method for refining aluminium silicon melt of the present invention, with using the intermetallic compound that forms in the known method of refining aluminium silicon melt in the past relatively, contain chromium, manganese and the aluminium of the iron of higher concentration and titanium, low concentration.In addition, use the method for refined aluminum silicon alloy of the present invention, process of cooling is not followed and is formed intermetallic compound CrAl
7, Cr
0.05Mn
0.2Al
3, Cr
0.4Mn
0.2Al
2.1Si
0.4, MnAl
6, Cr
0.6Al
2Si
0.6, Mn
0.5Al
2.2Si
0.4Known method forms above-mentioned intermetallic compound and use in the past, and also can increase the consumption of chromium, manganese, aluminium and silicon, the yield of reduction aluminium silicon melt and the aluminium content the increase strainer residue at filtration stage from aluminium silicon melt removal iron and titanium impurity.
Form listed intermetallic compound and iron and titanium content height in the table 1, will help to reduce the total mass of intermetallic compound.Conversely, this also reduces the height of intermetallic compounds layer on the strainer, has reduced loss, the aluminium content in the reduction strainer residue and the yield of raising refined alloy of crystallization aluminum silicon alloy in the strainer residue thus.
The limiting proportion (0.2～1.1) of the quality sum of chromium and manganese and the quality sum of iron and titanium: 1, and equal (0.2～20): 1 chromium is decided by following condition with the quality limit of manganese ratio.
Mass ratio in the eutectic aluminum-silicon melt (Cr+Mn): when (Fe+Ti) being lower than 0.2: 1, then the quantity not sufficient of chromium and manganese is to form the intermetallic compound of the most favourable above-mentioned composition (table 1).In the case, the Fe that in melt, forms
0.5Al
2.3Si
0.5Low and the aluminium content height of the iron level of compound between shaped metal, this can reduce the degree of removing iron and titanium impurities and refining from the eutectic aluminum-silicon melt, and the debase of refined alloy is transformed into refined alloy because part is short grained above-mentioned intermetallic compound simultaneously.In addition, if above-mentioned mass ratio is lower than minimum limit value, this can increase the aluminium content in the strainer residue, because above-mentioned residue is by Fe
0.5Al
2.3Si
0.5Compound concentrates between shaped metal, clearly, and Fe
0.5Al
2.3Si
0.5Aluminium content height.
Mass ratio in the aluminium silicon melt (Cr+Mn): when (Fe+Ti) being higher than 1.1: 1, unnecessary chromium and manganese concerning the relation of iron and titanium impurity in process of cooling, can form intermetallic compound Cr listed in the table 2
0.4Mn
0.2Al
2.1Si
0.4, Cr
0.05Mn
0.2Al
3.2, Cr
0.6Al
2Si
0.6, CrAl
7, MnAl
6With other intermetallic compound.The concentration height of chromium, manganese, aluminium in these intermetallic compounds, and the concentration of iron and titanium is low, compound (for example, Cr between formed part metals of while
0.05Mn
0.2Al
3.2, CrAl
7MnAl
6, Cr
0.6Al
2Si
0.6, Mn
0.5Al
2.2Si
0.4) do not contain any iron and titanium.In aluminum filtration silicon melt process, remove the yield that iron and titanium can cause reducing the aluminium silicon melt thereby remove these intermetallic compounds, increase the aluminium content in the strainer residue simultaneously.In addition,, also can cause consuming excessively of noble metal chromium manganese, can not improve the degree that aluminum silicon alloy is removed iron and titanium impurities and refining again if above-mentioned mass ratio is higher than maximum.
The reduction of chromium and manganese mass ratio (being lower than 0.1: 1) can destroy the condition of the intermetallic compound that forms the listed the most favourable composition of table 1 in the aluminium silicon melt.In addition, because manganese content height, chromium content are low in aluminum silicon alloy, in the intermetallic compound that forms iron content and titanium, manganese plays a major role.In the case, forming intermetallic compound is Fe
0.2Mn
0.3Al
2.4Si
0.3, Mn
0.5Al
2.3Si
0.4, Fe
0.2Mn
0.3Al
2.3, MnAl
6; Reduced the yield of refined aluminum silicon alloy, aluminium content and reduction aluminum silicon alloy removal iron and the titanium purified degree in the increase strainer residue in their removal of filtration stage, made the debase of refined alloy simultaneously.This is because at formed intermetallic compound Fe
0.2Mn
0.3, Al
2.4Si
0.3, Mn
0.5Al
2.3Si
0.4, Fe
0.2Mn
0.3Al
2.3, MnAl
6Middle enriched in cobalt, intermetallic compound Mn simultaneously
0.5Al
2.3Si
0.4And MnAl
6Do not contain any iron and titanium impurity.
When the mass ratio of chromium and manganese surpasses 20: 1, in the aluminium silicon melt, can observe the chromium of the unnecessary quantity for manganese.In the case, the aluminium silicon melt is mainly the intermetallic compound of enrichment chromium and aluminium, for example, and CrAl
7, Cr
0.5Ti
0.5Si
0.4Al
1.5, Fe
0.1Cr
0.6Si
1.7Ti
0.3, Cr
0.2Fe
0.4Al
2.3Si
0.4, Cr
0.3Fe
0.3Al
1.7Si
0.9This can cause the yield of filtration stage aluminium silicon melt lower, increases the aluminium content in the strainer residue simultaneously, and don't improves the degree that aluminum silicon alloy is removed iron and titanium impurities and refining.
It should be noted, the chromium of claim and the quality of manganese and with the quality of iron and titanium impurity and ratio equal (0.2～1.2): 1, equal (0.1～20) with chromium with the mass ratio of manganese: the 1st, relevant mutually, the combined action of the two just guarantees to obtain above-mentioned advantage.
Be lower than 590 ℃ and when being filtered below 590 ℃ when the aluminium silicon melt is cooled, the eutectic aluminum-silicon melt begins crystallization.It loses flowability and can not be filtered, and perhaps is filtered and loses very greatly, is lost in the residue of strainer.
When being cooled to temperature, the aluminium silicon melt is higher than 660 ℃ and when this temperature is filtered, the degree that the aluminium silicon melt is removed iron and titanium impurities and refining will descend, because be higher than 660 ℃ in temperature, perhaps can not be completed into the listed intermetallic compound of table 1, also just can not from aluminum silicon alloy, remove iron and titanium; Perhaps can not finish the process that forms above-mentioned intermetallic compound, in this case: intermetallic compound contains quite few iron and titanium, and crystallize into some little crystal grain, and this makes iron and titanium in filtration stage is attached to the aluminium silicon melt, thus iron and titanium dopedly advance alloy.Such aluminum silicon alloy is promptly used during the various products of this alloy casting in further crystallisation process, and this intermetallic compound crystal is grown up, thereby reduces the performance characteristics performance characteristics of the product of this alloy manufacturing (promptly with) of this alloy.The content of every kind of intermetallic compound in its total mass that table 1 is listed, in following limits value [%(quality)], with the quality of chromium in the aluminum silicon alloy and manganese and with the quality of iron and titanium impurity and ratio and the mass ratio of chromium and manganese change: Cr
0.05Fe
0.5Al
1.5Si-0.5～15, Cr
0.03Fe
0.5Al
1.1Si
1.4-0.5～30, Fe
0.5Cr
0.03Mn
0.02Al
1.5Si-3～15, Fe
0.5Cr
0.01Mn
0.02Al
1.1Si
1.4-3～15, Fe
0.3Cr
0.4Si
1.1Ti
0.6-0.5～15, Cr
0.3TiSi
1.3-0.5～15, Fe
0.4Cr
0.2Mn
0.1Si
1.2Ti
0.6-3～20, Fe
0.4Cr
0.08Mn
0.07Al
1.3SiTi
0.3-3～20, Fe
0.4Cr
0.1AlSi
1.1Ti
0.3-3～20, Cr
0.3Ti
0.7Si
0.8Al
1.1-0.5～25.
Like this, for example the quality of chromium and manganese and with the quality of iron and titanium impurity and ratio equal 0.6: 1 constant, and the mass ratio of chromium and manganese changed at 10: 1 o'clock from 0.4: 1, intermetallic compound Cr
0.03Fe
0.5Al
1.1Si
1.4With Fe
0.3Cr
0.4Si
1.1Ti
0.6Content in its total mass is increased to 20% and 9% from 3% and 2% respectively.
On the basis of above-mentioned consideration, we recommend following two kinds of schemes to realize method of the present invention:
In realizing first scheme of this method, when the quantity of using chromium and manganese, make its quality and with the quality of iron and titanium impurity and ratio be (0.2～0.69):, then recommend the mass ratio of chromium and manganese to remain (0.5～20): 1 at 1 o'clock.In the case, the main intermetallic compound that forms is best composition: Cr in the aluminium silicon melt
0.03Fe
0.5Al
1.1Si
1.4, Fe
0.3Cr
0.4Si
1.1Ti
0.6, Cr
0.3Ti Si
1.3, Fe
0.4Cr
0.1Al Si
1.1Ti
0.3, these intermetallic compounds comprise the aluminium of minimum concentration and the iron and the titanium of maximum concentration.Aluminium silicon melt with above-mentioned intermetallic compound composition is removed iron and titanium at filtration stage, has guaranteed the efficient height of method of refining of the present invention.
In realizing the alternative plan of this method, when the quantity of using chromium and manganese, make its quality and with the quality of iron and titanium impurity and ratio be (0.7～1.1): 1 o'clock, then recommend, the mass ratio of chromium and manganese remains (0.1～0.4): 1.Like this, for above situation, the main intermetallic compound that forms is best composition: Fe in the aluminium silicon melt
0.5Cr
0.01Mn
0.02Al
1.1Si
1.4, Fe
0.14Cr
0.2Mn
0.1Si
1.2Ti
0.6The characteristics of these intermetallic compounds are that the content of content Gao Erge, manganese and the aluminium of iron and titanium is low.Remove iron and titanium from above-mentioned intermetallic compound, can guarantee method of refining efficient height of the present invention.
It should be noted, with known method in the past relatively, arbitrary mass ratio of chromium, manganese, iron and titanium is in disclosed limit value the time, and the advantage of the inventive method can both obtain, if when realizing disclosed method, still can obtain best result according to the embodiment of quoting as proof above.
By known method of various past, also can obtain removing the purified cocrystallized Al-Si alloy of iron and titanium impurity, for example by the method for claim, in metallurgical batch mixing stove, induction heater or gas furnace with silicon, aluminium and/or they once and secondary alloy (aluminosilicate, ferro-aluminum or the like) be melted in together, also can obtain above-mentioned aluminum silicon alloy.Above listed metal and alloy, the ratio of use should guarantee that the aluminum silicon alloy that is produced is eutectic composition and contains 10～14%(quality) silicon.
If ore reduction electric furnace and aluminum silicate raw material are commercially available, can obtain removing the purified al-si eutectic alloy of iron and titanium impurity in accordance with the following methods.By the ore reduction melting, melting contains agglomerate aluminum silicate raw material and carbonaceous reducing agent charging in the ore reduction electric furnace, with the aluminum silicon alloy of producing following hypereutectic composition [%(quality)]: silicon-30～40, iron-2～5; Titanium-0.8～3; All the other are aluminium.In order from alloy, to remove nonmetallic impurity, in casting ladle, handle transcocrystallized Al-Si alloy with solubility promoter, be poured into then in the alloy batch mixing stove.Ratio with silicon in the transcocrystallized Al-Si alloy is decided, with aluminium and/or once or the secondary aluminum base alloy transcocrystallized Al-Si alloy is diluted to eutectic composition [silicone content in the alloy is 10～14%(quality)].
Therefore, using the prerequisite of disclosed method of refining is to produce the initial cocrystallized Al-Si alloy that contains iron and titanium impurity by any known method.
In addition, can be used as by the secondary aluminum silicon alloy of iron and titanium doping impurity and need the purified aluminum silicon alloy.The secondary aluminum silicon alloy that should make or contain hypoeutectic or contain hypereutectic composition produced eutectic composition in the past in refining.
Suggestion realizes removing the method for the present invention of iron and titanium impurities and refining cocrystallized Al-Si alloy in the following manner.
By the component of predetermined proportion, preparation alloy mixture Al-Cr and Al-Mn in 750～1100 ℃ induction heater.In alloy batch mixing stove, resulting alloy mixture is melted in together, with the initial cocrystallized Al-Si alloy that contains iron and titanium impurity to produce cocrystallized Al-Si alloy.If the aluminum base alloy mixture added in the initial cocrystallized Al-Si alloy and cause producing hypoeutectic al-si alloy melt [silicone content is lower than the 10%(quality)], just must add the silicon that enough produces eutectic aluminum-silicon melt quantity, mix with alloy mixture and/or initial aluminum silicon alloy.
According to the quality of desired chromium and manganese and with the quality of iron and titanium impurity and ratio and the mass ratio of chromium and manganese, determine to add the quantity of the interior alloy mixture of aluminium silicon melt.
For the composition that makes gained aluminium silicon melt mixes, suggestion mixes the aluminium silicon melt 5～30 minutes.Finish on the blended basis, suggestion keeps the aluminium silicon melt 10～15 minutes, so that remove nonmetallic impurity from melt.In the maintenance process, the aluminium silicon melt is cooled.Yet, during this period of time do not reach desired temperature (590～660 ℃), that is to say, mass ratio according to solid aluminum and chilled aluminium silicon melt equals (0.01～0.1): 1 ratio adds solid aluminum or aluminum base alloy in the aluminium silicon melt that has been cooled, forces the melt cooling.
If solid aluminum or aluminum base alloy are added in the chilled eutectic aluminum-silicon melt, cause producing the hypoeutectic melt, some silicon must be added in the aluminium silicon melt that has been cooled, the quantity of added silicon just in time is for obtaining the desired quantity of chilled eutectic aluminum-silicon melt.
In order to accelerate process of cooling, an effective practice is a continuously stirring aluminium silicon melt, and with the temperature of Wolfram rhenium heat electric couple continuously measured melt.
When melt temperature is 590～660 ℃, filter chilled eutectic aluminum-silicon melt.
When being filtered, fusile eutectic aluminum-silicon melt infiltrate strainer enters the metal susceptor that is positioned at below the strainer, because filteration, the high fusibility intermetallic compound that contains iron and titanium and the listed various compositions of table 1 that has produced with the aluminium silicon melt separately, and being transferred in the strainer residue, so the aluminum silicon alloy of having removed iron and titanium refining.
Cast desired product by various existent method with refined aluminum silicon alloy then.
Below provided technology one economic index claim and known method of refining of past, for example the consumption of aluminium content, chromium and the manganese in the yield of filtration stage aluminium silicon melt, the strainer residue, aluminum silicon alloy are removed the degree of iron and titanium impurities and refining.
Obtain the yield of filtration stage aluminium silicon melt according to the mass percent of aluminium silicon melt before and after filtering.
By strainer residue sampling chemical analysis or spectroscopic analysis, determine the aluminium alloy in the residue.
Determine the consumption of chromium and manganese divided by the merchant of the quality sum gained of iron and titanium in the initial aluminum silicon alloy with the quality sum of used chromium and manganese.
With the difference of the content of iron and titanium in the aluminium silicon melt before and after filtering content divided by above-mentioned impurity in the aluminium silicon melt before filtering, determine the degree of aluminum silicon alloy removal iron and titanium impurities and refining, represent with per-cent.
In order to understand the present invention better, below provide the example of some embodiment of the present invention.Behind each example in the given table 3, summed up the technology one economic index (filtering the mass accumulation consumption of removing iron and the yield of titanium stage aluminium silicon melt, the aluminium content in the strainer residue, the iron that is needing every removal unit mass in the purified aluminium alloy and required chromium of titanium impurity and manganese, the degree that aluminum silicon alloy is removed iron and titanium impurities and refining) of claim of the present invention during example 1～9 is used, table 3 also provides the unit elongation data of relevant refined aluminum silicon alloy, and it has disclosed the extensible characteristic of aluminum silicon alloy.In addition, for the purpose of comparison, table 3 provides according to example 10 and 11 and uses the technology one economic index that known method of past obtains, and the unit elongation data of the relevant refined aluminum silicon alloy that draws.
Example 1
By the composition of purified cocrystallized Al-Si alloy be [the %(quality)]: silicon 13.9; Iron 0.8; Titanium 0.4; All the other are aluminium.
With temperature is that 750 ℃ of aluminum silicon alloys with mentioned component place in the alloy batch mixing stove, the alloy mixture Al-Mn and the Al-Cr that are heated to 800 ℃ and 820 ℃ respectively that produces in the induction heater that coexist is melted in together, mass ratio at chromium and manganese is 0.1: 1 o'clock, the quantity of this alloy mixture must guarantee, make chromium and manganese quality and with the quality of iron and titanium impurity and ratio be 0.1: 1.
Al-si eutectic alloys with chromium and manganese are melted in together, and the aluminium silicon melt that is produced has following eutectic composition [%(quality)]: silicon 12.5; Iron 0.8; Titanium 0.4; Chromium 0.02; All the other are aluminium for manganese 0.22.
The temperature of the eutectic aluminum-silicon melt that is produced is 760 ℃.For the aluminium silicon melt is cooled to 590 ℃, a spot of solid aluminium is added in the melt, the mass ratio of aluminium and melt equals 0.08: 1; The chilled aluminium silicon melt of continuously measured temperature.When the temperature of aluminium silicon melt reaches 590 ℃, just stop process of cooling, and under uniform temp, filter above-mentioned melt.
To collect the metal susceptor that is positioned at below the strainer by the refining eutectic aluminum-silicon melt of strainer, above-mentioned melt has following composition [%(quality)]: silicon 11.3; Iron 0.46; Titanium 0.12; Chromium 0.01; Manganese 0.08; All the other are aluminium.
On the strainer between metal remained compound contain iron and titanium.
Example 2
By the purified cocrystallized Al-Si alloy following composition [%(quality)] is arranged: silicon 13.2; Iron 1.4; Titanium 0.7; All the other are aluminium.
With temperature is that 670 ℃ of aluminum silicon alloys with mentioned component place in the alloy batch mixing stove, and alloy mixture Al-Cr and Al-Mn that the temperature of producing in the induction heater that coexists is respectively 900 ℃ and 780 ℃ are melted in together.The quantity of alloy mixture must guarantee, is 10: 1 o'clock at the mass ratio of chromium and manganese, make chromium and manganese quality and with the quality of iron and titanium impurity and ratio be 0.65: 1.
For the composition that makes aluminum silicon alloy mixes, it was stirred 15 minutes.So just produced the aluminium of following eutectic composition silicon melt is arranged [the %(quality)]: silicon 12.0; Iron 1.4; Titanium 0.7; Chromium 1.24; Manganese 0.12; All the other are aluminium.
The temperature of gained aluminium silicon melt is 690 ℃.Above-mentioned melt is kept 30 minutes with the removal nonmetallic impurity, and make its temperature be cooled to 660 ℃.Then, under uniform temp, filter chilled melt.
Be collected in refined aluminium silicon melt in the metal susceptor following eutectic composition [%(quality)] is arranged: silicon 11.5; Iron 0.34; Titanium 0.07; Chromium 0.45; Manganese 0.04; All the other are aluminium.
Example 3
By the purified cocrystallized Al-Si alloy following composition [%(quality)] is arranged: silicon 13.6; Iron 2.0; Titanium 1.0; All the other are aluminium.
With temperature is that 730 ℃ of refined aluminum silicon alloys with mentioned component place in the alloy batch mixing stove, and alloy mixture Al-Cr and Al-Mn that the temperature of producing in the induction heater that coexists is respectively 930 ℃ and 780 ℃ are melted in together.The quantity of alloy mixture must guarantee, is 20: 1 o'clock at the mass ratio of chromium and manganese, make chromium and manganese quality and with the quality of iron and titanium impurity and ratio be 1.1: 1.
For the composition that makes the aluminium silicon melt mixes, it was mixed 25 minutes.The result is, the aluminium silicon melt of generation has following eutectic composition [%(quality)]: silicon 12.1; Iron 2.0; Titanium 1.0; Chromium 3.15; Manganese 0.15; All the other are aluminium.The temperature of gained melt is 780 ℃.
In order from melt, to remove nonmetallic impurity and to make the melt cooling a bit, the aluminium silicon melt was kept 40 minutes, so its temperature drops to 730 ℃.In order to make the aluminium silicon melt be cooled to 625 ℃, solid aluminum is added in the melt, the mass ratio of aluminium and chilled melt is 0.05: 1, filters chilled melt at 625 ℃ then.
Be collected in refined aluminium silicon melt in the metal susceptor following eutectic composition [%(quality)] is arranged: silicon 11.6; Iron 0.42; Titanium 0.10; Chromium 0.7; Manganese 0.04; All the other are aluminium.
Example 4
There is following composition to be [%(quality)] by the purified cocrystallized Al-Si alloy: silicon 13.9; Iron 0.8; Titanium 0.4; All the other are aluminium.
With temperature is that 700 ℃ of aluminum silicon alloys with mentioned component place in the alloy batch mixing stove, and is melted in together with the alloy mixture Al-Cr and the Al-Mn that are respectively 850 ℃ and 780 ℃ by the temperature of producing in the induction heater.The quantity of alloy mixture must be like this, is 20: 1 o'clock at the mass ratio of chromium and manganese, make chromium and manganese quality and with the quality of iron and titanium impurity and ratio be 0.2: 1.The aluminium silicon melt that is produced has following eutectic composition [%(quality)]: silicon 12.8; Iron 0.8; Titanium 0.4; Chromium 0.23; Manganese 0.01; All the other are aluminium.The temperature of above-mentioned melt is 730 ℃.In order to make the aluminium silicon melt be cooled to 590 ℃, solid aluminum is added in the above-mentioned melt, the mass ratio of aluminium and chilled melt is 0.07: 1.Filter above-mentioned melt at 590 ℃ then.
Be collected in refined aluminium silicon melt in the metal susceptor following eutectic composition [%(quality)] is arranged: silicon 11.0; Iron 0.30; Titanium 0.05; Chromium 0.10; Manganese 0.005; All the other are aluminium.
Example 5
By the purified cocrystallized Al-Si alloy following composition [%(quality)] is arranged: silicon 13.2; Iron 1.4; Titanium 0.7; All the other are aluminium.
With temperature is that 690 ℃ of refined aluminum silicon alloys with mentioned component place in the alloy batch mixing stove, and alloy mixture Al-Cr and Al-Mn that the temperature of producing in the induction heater that coexists is respectively 860 ℃ and 760 ℃ are melted in together.The quantity of alloy mixture must be like this, is 10: 1 o'clock at the mass ratio of chromium and manganese, make chromium and manganese quality and with the quality of iron and titanium impurity and ratio be 0.45: 1.
For the aluminium silicon melt is mixed, it was mixed 20 minutes.The aluminium silicon melt that produces has following eutectic composition [%(quality)]: silicon 12.9; Iron 1.4; Titanium 0.7; Chromium 0.86; Manganese 0.085; All the other are aluminium.The temperature of the melt that produces is 700 ℃, in order to remove nonmetallic impurity and make its temperature be cooled to 590 ℃ from melt, with above-mentioned melt maintenance 45 minutes and 590 ℃ of filtrations.
Be collected in refined aluminium silicon melt in the metal susceptor following eutectic composition [%(quality)] is arranged: silicon 11.2; Iron 0.32; Titanium 0.05; Chromium 0.30; Manganese 0.03; All the other are aluminium.
Example 6
By the purified cocrystallized Al-Si alloy following composition [%(quality)] is arranged: silicon 13.6; Iron 2.0; Titanium 1.0; All the other are aluminium.
With temperature is that 750 ℃ of refined aluminum silicon alloys with mentioned component place in the alloy batch mixing stove, and alloy mixture Al-Cr and Al-Mn that the temperature of producing in the induction heater that coexists is respectively 840 ℃ and 880 ℃ are melted in together.Use alloy mixture with such quantity, promptly the mass ratio at chromium and manganese is 0.5: 1 o'clock, make chromium and manganese quality and with the quality of iron and titanium impurity with ratio be 0.69: 1.
For the composition that makes the aluminium silicon melt mixes, it was mixed 15 minutes.The aluminium silicon melt that produces has following eutectic composition [%(quality)]: silicon 12.2; Iron 2.0; Titanium 1.0; Chromium 0.69; Manganese 1.38; All the other are aluminium.The temperature of gained melt is 780 ℃.
In order from the aluminium silicon melt, to remove nonmetallic impurity and to make the melt cooling a bit, melt was kept 30 minutes.Then, be 0.06: 1 with the mass ratio of aluminium and chilled melt, solid aluminum is added in the above-mentioned melt, so that make the temperature of melt be cooled to 625 ℃.Under this temperature, filter the eutectic aluminum-silicon melt.
Be collected in refined aluminium silicon melt in the metal susceptor following eutectic composition [%(quality)] is arranged: silicon 11.3; Iron 0.37; Titanium 0.06; Chromium 0.24; Manganese 0.55; All the other are aluminium.
Example 7
By the purified cocrystallized Al-Si alloy following composition [%(quality)] is arranged: silicon 13.9; Iron 0.8 titanium 0.4; All the other are aluminium.
With temperature is that 680 ℃ of refined aluminum silicon alloys with mentioned component place in the alloy batch mixing stove, and alloy mixture Al-Cr and Al-Mn that the temperature of producing in the induction heater that coexists is respectively 850 ℃ and 840 ℃ are melted in together.The quantity of alloy mixture is like this, is 0.4: 1 o'clock at the mass ratio of chromium and manganese, make chromium and manganese quality and with the quality of iron and titanium impurity and ratio be 0.7: 1.Gained aluminium silicon melt has following eutectic composition [%(quality)]: silicon 12.8; Iron 0.8; Titanium 0.4; Chromium 0.24; Manganese 0.60; All the other are aluminium.The temperature of above-mentioned melt is 730 ℃.
For the temperature that makes the aluminium silicon melt is cooled to 590 ℃, be 0.07: 1 with the mass ratio of aluminium and chilled melt, solid aluminum is added in the above-mentioned melt.Filter above-mentioned melt at 590 ℃ then.
Be collected in refined aluminium silicon melt in the metal susceptor following eutectic composition [%(quality)] is arranged: silicon 11.2; Iron 0.36; Titanium 0.08; Chromium 0.10; Manganese 0.25; All the other are aluminium.
Example 8
By the purified cocrystallized Al-Si alloy following composition [%(quality)] is arranged: silicon 13.2; Iron 1.4; Titanium 0.7; All the other are aluminium.
With temperature is that 680 ℃ of refined aluminum silicon alloys with mentioned component place in the alloy batch mixing stove, and alloy mixture Al-Cr and Al-Mn that the temperature of producing in the induction heater that coexists is respectively 860 ℃ and 880 ℃ are melted in together.Use alloy mixture with such quantity, promptly the mass ratio at chromium and manganese is 0.25: 1 o'clock, make chromium and manganese quality and with the quality of iron and titanium impurity with ratio be 0.9: 1.
For the composition that makes the aluminium silicon melt mixes, it was mixed 20 minutes, the aluminium silicon melt of generation has following eutectic composition [%(quality)]: silicon 12.0; Iron 1.4; Titanium 0.7; Chromium 0.38; Manganese 1.51; All the other are aluminium.The temperature of aluminium silicon melt is 710 ℃.In order to remove any nonmetallic impurity and to make melt temperature be cooled to 660 ℃, above-mentioned melt was kept 45 minutes, under 660 ℃ temperature, filter chilled melt then.
Be collected in refined aluminium silicon melt in the metal susceptor following eutectic composition [%(quality)] is arranged: silicon 11.5; Iron 0.37; Titanium 0.09; Chromium 0.14; Manganese 0.35; All the other are aluminium.
Example 9
Cocrystallized Al-Si alloy has following composition to be [%(quality)]: silicon 13.6; Iron 2.0; Titanium 1.0; All the other are aluminium.
With temperature is that 730 ℃ of refined aluminum silicon alloys with mentioned component place in the alloy batch mixing stove, and alloy mixture Al-Cr and Al-Mn that the temperature of producing in the induction heater that coexists is respectively 850 ℃ and 920 ℃ are melted in together.The quantity of alloy mixture is like this, is 0.1: 1 o'clock at the mass ratio of chromium and manganese, make chromium and manganese quality and with the quality of iron and titanium impurity and ratio be 1.1: 1.
For the composition that makes the aluminium silicon melt mixes, it was mixed 25 minutes.The aluminium silicon melt that produces has following eutectic composition [%(quality)]: silicon 12.2; Iron 2.0; Titanium 1.0; Chromium 0.3; Manganese 3.0; All the other are aluminium.The temperature of gained melt is 790 ℃.
In order from the aluminium silicon melt, to remove nonmetallic impurity and to make the melt cooling a bit, the aluminium silicon melt was kept 45 minutes.This makes the temperature of melt be cooled to 625 ℃, is 0.05: 1 with the mass ratio of aluminium and chilled melt, and solid aluminum is added in the above-mentioned melt.
Be collected in refined aluminium silicon melt in the metal susceptor following eutectic composition [%(quality)] is arranged: silicon 11.6; Iron 0.39; Titanium 0.08; Chromium 0.10; Manganese 0.65; All the other are aluminium.
Example 10(contrast)
According to inventor's certificate U.SSR(Soviet Union) No1108122, by the purified cocrystallized Al-Si alloy following composition [%(quality)] is arranged: silicon 13.9; Iron 0.8; Titanium 0.4; All the other are aluminium.
With temperature is that 750 ℃ of refined aluminum silicon alloys with mentioned component place in the alloy batch mixing stove, and the temperature of producing in the induction heater that coexists the alloy mixture Al-Cr and the Al-Mn of 870 ℃ and 860 ℃ are melted in together respectively.The quantity of alloy mixture is like this, is 0.5: 1 o'clock at the mass ratio of chromium and manganese, make chromium and manganese quality and with the quality of iron and titanium impurity and ratio be 1.2: 1.Gained aluminium silicon melt has following eutectic composition [%(quality)]: silicon 12.8; Iron 0.8; Titanium 0.4; Chromium 0.4; Manganese 0.96; All the other are aluminium.The temperature of above-mentioned melt is 780 ℃.For the aluminium silicon melt is cooled to 615 ℃, be 0.08: 1 with the mass ratio of aluminium and chilled melt, solid aluminum is added in the above-mentioned melt.When temperature drops to 615 ℃, stop cooling and under this temperature, filter above-mentioned melt.
Be collected in refined aluminium silicon melt in the metal susceptor following eutectic composition [%(quality)] is arranged: silicon 12.6; Iron 0.58; Titanium 0.13; Chromium 0.10; Manganese 0.16; All the other are aluminium.
Example 11(contrast)
According to inventor's certificate USSR(Soviet Union) No1108122, by the purified cocrystallized Al-Si alloy following composition [%(quality)] is arranged: silicon 13.6; Iron 2.0; Titanium 1.0; All the other are aluminium.
With temperature is that 730 ℃ of refined aluminum silicon alloys with mentioned component place in the alloy batch mixing stove, and alloy mixture Al-Cr and Al-Mn that the temperature of producing in the induction heater that coexists is respectively 930 ℃ and 900 ℃ are melted in together.Using alloy mixture with such quantity, is 1: 1 o'clock at the mass ratio of chromium and manganese, make chromium and manganese quality and with the quality of iron and titanium impurity with ratio be 2.0: 1.
For the composition that makes the aluminium silicon melt mixes, it was mixed 30 minutes.Gained aluminium silicon melt has following eutectic composition [%(quality)]: silicon 12.2; Iron 2.0; Titanium 1.0; Chromium 3.0; Manganese 3.0; All the other are aluminium.The melt temperature that produces is 800 ℃.
In order from melt, to remove nonmetallic impurity and to make the melt cooling a bit, the aluminium silicon melt was kept 45 minutes, drop to till 740 ℃ up to melt temperature.For the aluminium silicon melt with eutectic composition is cooled to 620 ℃, equal 0.06: 1 with the mass ratio of aluminium and chilled melt, solid aluminum is added in the above-mentioned melt.Under 620 ℃ temperature, filter chilled melt then.
Be collected in refined aluminium silicon melt in the metal susceptor following eutectic composition [%(quality)] is arranged: silicon 12.3; Iron 0.70; Titanium 0.25; Chromium 0.35; Manganese 0.40; All the other are aluminium.
Table 3
The method of claim
The Nes parameter
Example
1 2 3 4
3 4 5 6
1. filter to remove iron and the titanium impurity stage totally 97.5 98.2 97.0 98.8
The yield of brilliant aluminium silicon melt, %
2. the aluminium content in the strainer residue, % 64.3 59.1 66.5 55.2
3. every removal unit 0.2 0.65 1.1 0.2 in the cocrystallized Al-Si alloy
Chromium and manganese when quality iron and titanium impurity
The mass accumulation consumption
4. cocrystallized Al-Si alloy is removed iron 42.5 75.7 79.0 62.5
Purified degree %
5. cocrystallized Al-Si alloy is removed titanium 70.0 90.0 87.5 87.5
Purified degree %
6. refining eutectic aluminium-silicon alloy prolongs 3.3 3.8 3.5 4.0
Stretch rate, %
Inventor's certificate
USSRNo1108122
Known method of past
Example
5 6 7 8 9 10 11
7 8 9 10 11 12 13
98.4 98.0 98.0 97.8 97.2 93.5 88.1
57.0 59.2 59.5 60.5 63.4 72.3 80.3
0.45 0.69 0.7 0.9 1.1 1.2 2.0
77.1 81.5 55.0 73.5 80.5 27.5 65.0
92.85 94.5 80.0 87.1 92.0 67.5 75.0
3.9 3.7 3.7 3.6 3.6 3.0 2.5
In table 3, provide technology one economic index of the present invention and known method of past, shown the advantage of the inventive method.
Therefore, when the inventive method is used for refining and has the cocrystallized Al-Si alloy of following composition [%(quality)]: silicon 13.9; Iron 0.8; Titanium 0.4; All the other are aluminium, and it demonstrates following advantage with known method comparison in the past:
1. be increased to 97.5～98.8% in yield that filter to remove the iron and the aluminium silicon melt in titanium stage from 93.5%, just, increased by 4～5.3%(absolute value).
2. the aluminium content in the filtration residue drops to 55.2～64.3%(absolute value from 72.3%), just, reduced by 8～17.1%(absolute value).
3. the accumulation consumption of chromium manganese reduces to original 1/6～1/1.7.
4. cocrystallized Al-Si alloy is removed iron purified degree and is brought up to 42.5～62.5% from 27.5%, just, has improved 0.5～1.3 times.
5. cocrystallized Al-Si alloy is removed iron purified degree and is brought up to 70～87.5% from 67.4%, just, has improved 2.5～20%(absolute value).
6. the unit elongation of refined cocrystallized Al-Si alloy is increased to 3.3～4.0% from 3.0%, just, has increased by 0.1～0.3 times.
When the inventive method is used for refining and has the cocrystallized Al-Si alloy of following composition [%(quality)]: silicon 13.6; Iron 2.0; Titanium 1.0; All the other are aluminium, and it demonstrates following advantage with known method comparison in the past:
1. be increased to 97.0～98.0% in yield that filter to remove the iron and the aluminium silicon melt in titanium stage from 88.1%, just, increased by 8.9～9.9%(absolute value).
2. the aluminium content in the filtration residue drops to 59.2～66.5% from 80.3%, and just, 13.8～21.1%(absolute value has descended).
3. the accumulation consumption of chromium manganese reduces to original 1/2.9～1/1.8.
4. cocrystallized Al-Si alloy is removed iron purified degree from 65.0%, brings up to 79.0～81.5%, just, has improved 0.2～0.25 times.
5. cocrystallized Al-Si alloy is removed titanium purified degree and is brought up to 90～94% from 75.0%, just, has improved 0.2～0.25 times.
6. the unit elongation of refined cocrystallized Al-Si alloy is increased to 3.5～3.7% from 2.5%, just, has increased by 0.4～0.5 times.
Except above-mentioned advantage, in producing cocrystallized Al-Si alloy, remove iron and titanium refined aluminum silicon alloy by method of refining of the present invention, making is become possibility by iron and titanium doped two secondary aluminiums and the use of aluminum silicon alloy, and guarantees to produce high-quality primary aluminum-silicon alloy.A secondary aluminium and silicon metal have been saved thus.
In copper metallurgy and Mechanical engineering, the present invention can be used to remove iron and titanium impurities and refining cocrystallized Al-Si alloy, refined alloy or have the character of an alloy, or have the character of secondary alloy.
Claims (3)
1, a kind of method of removing the refining eutectic aluminium-silicon alloy of iron and titanium impurity comprises: al-si eutectic alloys with chromium and manganese are melted in together, the gained melt is cooled to 590～660 ℃, and at the chilled melt of said temperature scope inner filtration.It is characterized in that use chromium and manganese with such quantity, promptly the mass ratio at chromium and manganese be (0.2～1.1): 1 o'clock, make chromium and manganese quality and with the quality of iron and titanium impurity with ratio be (0.2～1.1): 1.
2, according to the method for described removal iron of claim 1 and titanium impurities and refining eutectic aluminium-silicon alloy, it is characterized in that, using with such quantity under the situation of chromium and manganese, make they quality and with the quality of iron and titanium impurity and ratio be (0.2～0.69):, keep the mass ratio of chromium and manganese to equal (0.5～20): 1 at 1 o'clock.
3, according to the method for described removal iron of claim 1 and titanium impurities and refining eutectic aluminium-silicon alloy, it is characterized in that, using with such quantity under the situation of chromium and manganese, make they quality and with the quality of iron and titanium impurity and ratio be (0.7～1.1):, keep the mass ratio of chromium and manganese to equal (0.1～0.4): 1 at 1 o'clock.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/SU1986/000023 WO1987005636A1 (en) | 1986-03-21 | 1986-03-21 | Method for refining aluminium-silicon alloy of eutectic composition from admixtures of iron and titanium |
| AU61216/86A AU586014B2 (en) | 1986-03-21 | 1986-03-21 | Refining eutectic al-si alloy from fe and ti impurities |
| EP19860904459 EP0269733A4 (en) | 1986-03-21 | 1986-03-21 | Method for refining aluminium-silicon alloy of eutectic composition from admixtures of iron and titanium. |
| JP61503683A JPS63503312A (en) | 1986-03-21 | 1986-03-21 | Process for refining eutectic aluminum-silicon alloys from iron and titanium impurities |
| BR8607115A BR8607115A (en) | 1986-03-21 | 1986-03-21 | REFINING PROCESS OF ALUMINUM-SILICON ALLOY OF EUTETIC COMPOSITION OF IRON AND TITANIUM IMPURITIES |
| IN311/CAL/86A IN162926B (en) | 1986-03-21 | 1986-04-21 | |
| CN86103277.2A CN1004932B (en) | 1986-03-21 | 1986-05-13 | Method for removing iron and titanium impurities and refining eutectic aluminium-silicon alloy |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/SU1986/000023 WO1987005636A1 (en) | 1986-03-21 | 1986-03-21 | Method for refining aluminium-silicon alloy of eutectic composition from admixtures of iron and titanium |
| CN86103277.2A CN1004932B (en) | 1986-03-21 | 1986-05-13 | Method for removing iron and titanium impurities and refining eutectic aluminium-silicon alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86103277A true CN86103277A (en) | 1987-11-25 |
| CN1004932B CN1004932B (en) | 1989-08-02 |
Family
ID=21616979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN86103277.2A Expired CN1004932B (en) | 1986-03-21 | 1986-05-13 | Method for removing iron and titanium impurities and refining eutectic aluminium-silicon alloy |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0269733A4 (en) |
| JP (1) | JPS63503312A (en) |
| CN (1) | CN1004932B (en) |
| AU (1) | AU586014B2 (en) |
| BR (1) | BR8607115A (en) |
| IN (1) | IN162926B (en) |
| WO (1) | WO1987005636A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425714C (en) * | 2006-12-04 | 2008-10-15 | 山西泰尔钢铁有限公司 | Process of refining aluminium silicon alloy from coal gangue or flyash |
| CN112867692A (en) * | 2018-10-23 | 2021-05-28 | 斯科奥有限公司 | Integrated production of high purity silicon and alumina |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02500600A (en) * | 1987-08-25 | 1990-03-01 | ドネプロペトロフスキイ メタルルルギチェスキイ インスティトゥト イメニ エル イー ブレジネヴァ | How to smelt aluminum alloy |
| CN102296212B (en) * | 2011-09-13 | 2013-01-23 | 成都银河动力有限公司 | P-Fe alloy type modifier and method for applying P-Fe alloy type modifier in aluminum-silicon alloy melting |
| CN107400806B (en) * | 2017-06-15 | 2019-04-16 | 中北大学 | A kind of intermediate alloy and preparation method thereof to go bad for secondary aluminium Fe-riched phase |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE886077C (en) * | 1940-07-05 | 1953-08-10 | Vaw Ver Aluminium Werke Ag | Process for the separation of iron from iron-containing aluminum alloys |
| US2464610A (en) * | 1940-07-08 | 1949-03-15 | Spolek | Method for producing aluminumsilicon alloys |
| FR976205A (en) * | 1948-10-02 | 1951-03-15 | Alais & Froges & Camarque Cie | Process for removing metallic impurities in metals or alloys, in particular in aluminum alloys |
| FR979569A (en) * | 1948-12-03 | 1951-04-27 | Alais & Froges & Camarque Cie | A method of removing unwanted alloying elements or metallic impurities in metals or alloys, particularly in aluminum alloys |
| US3198625A (en) * | 1961-02-08 | 1965-08-03 | Aluminum Co Of America | Purification of aluminum |
| SU514903A1 (en) * | 1973-10-08 | 1976-05-25 | Всесоюзный Научно-Исследовательский И Проектный Институт Вторичных Цветных Металлов | The method of refining aluminum alloys |
| US4277280A (en) * | 1978-08-23 | 1981-07-07 | Alcan Research And Development Limited | Apparatus and method for removal of alkali and alkaline earth metals from molten aluminium |
| SU1108122A1 (en) * | 1983-05-27 | 1984-08-15 | Днепропетровский Ордена Трудового Красного Знамени Металлургический Институт Им.Л.И.Брежнева | Method of processing high-iron silicoaluminium |
-
1986
- 1986-03-21 BR BR8607115A patent/BR8607115A/en unknown
- 1986-03-21 JP JP61503683A patent/JPS63503312A/en active Pending
- 1986-03-21 AU AU61216/86A patent/AU586014B2/en not_active Ceased
- 1986-03-21 WO PCT/SU1986/000023 patent/WO1987005636A1/en not_active Application Discontinuation
- 1986-03-21 EP EP19860904459 patent/EP0269733A4/en not_active Withdrawn
- 1986-04-21 IN IN311/CAL/86A patent/IN162926B/en unknown
- 1986-05-13 CN CN86103277.2A patent/CN1004932B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425714C (en) * | 2006-12-04 | 2008-10-15 | 山西泰尔钢铁有限公司 | Process of refining aluminium silicon alloy from coal gangue or flyash |
| CN112867692A (en) * | 2018-10-23 | 2021-05-28 | 斯科奥有限公司 | Integrated production of high purity silicon and alumina |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1004932B (en) | 1989-08-02 |
| WO1987005636A1 (en) | 1987-09-24 |
| AU586014B2 (en) | 1989-06-29 |
| JPS63503312A (en) | 1988-12-02 |
| EP0269733A4 (en) | 1989-05-26 |
| EP0269733A1 (en) | 1988-06-08 |
| IN162926B (en) | 1988-07-23 |
| AU6121686A (en) | 1987-10-09 |
| BR8607115A (en) | 1988-04-05 |
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