PL5782B1 - A method of recovering and purifying light metals. - Google Patents
A method of recovering and purifying light metals. Download PDFInfo
- Publication number
- PL5782B1 PL5782B1 PL5782A PL578224A PL5782B1 PL 5782 B1 PL5782 B1 PL 5782B1 PL 5782 A PL5782 A PL 5782A PL 578224 A PL578224 A PL 578224A PL 5782 B1 PL5782 B1 PL 5782B1
- Authority
- PL
- Poland
- Prior art keywords
- recovering
- light metals
- mixtures
- metals
- fact
- Prior art date
Links
- 229910052751 metal Inorganic materials 0.000 title claims description 12
- 239000002184 metal Substances 0.000 title claims description 12
- 238000000034 method Methods 0.000 title claims description 9
- 150000002739 metals Chemical class 0.000 title claims description 8
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 14
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 4
- 239000002699 waste material Substances 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 2
- 239000002562 thickening agent Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 150000004673 fluoride salts Chemical class 0.000 claims 1
- PALNZFJYSCMLBK-UHFFFAOYSA-K magnesium;potassium;trichloride;hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[Cl-].[Cl-].[Cl-].[K+] PALNZFJYSCMLBK-UHFFFAOYSA-K 0.000 claims 1
- 238000010309 melting process Methods 0.000 claims 1
- 229910001092 metal group alloy Inorganic materials 0.000 claims 1
- 239000011833 salt mixture Substances 0.000 claims 1
- 230000000996 additive effect Effects 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical class [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Description
Odzyskiwanie lekkich metali z odpad¬ ków, wedlug niemieckiego patentu 360818 w praktyce ustalilo, ze okreslenie ilosci zanieczyszczen w odpadkach, co jest nie¬ zbedne do okreslania MgCl2, sluzacego do oczyszczania przy przetapianiu, jest nad¬ zwyczaj trudnem. Aby nie dodac AfgC/2 za malo, stosowano go zwykle w nadmiarze, co znów powoduje niepozadane wlasnosci sto¬ pu, gdyz zdolnosc pochlaniania MgCl2 przez powstajacy zuzel okazala sie ogra¬ niczona,, a dzieki temu resztki AfgC/2 prze¬ chodza do stopu.Dalsze prace nad zasada odzyskiwania lekkich metali ustalily, ze powyzsze nie¬ dogodnosci daje sie usunac dodajac za¬ miast chlorku magnezowego (lub karnali¬ tu) tejze soli z dodatkiem takich substancyj, które z chlorkiem magnezowym nie two¬ rza eutektyków o niskim punkcie topliwo¬ sci, a dzialaja jak takie srodki zgeszczaja- ce, jak tlenki (np, magnezja) i fluorki ma¬ gnezu wapnia, glinu i innych metali Substancje te mozna dodawac w dosc szerokich granicach, przyczem dodatek do chlorku magnezowego mozna wprowadzic z poczatku procesu lub tez w czasie wla¬ sciwego stapiania, mozna tez poczatkowo dodawac czysty MgCl2i lub z nizsza pro¬ centowa zawartoscia dodatku, a pózniej wprowadzic mieszanine o wyzszej zawar¬ tosci dodatku.Mozna tez stosowac uprzednio stopione mieszaniny chlorku magnezowego i sub¬ stancji dodatkowej.Poza tern proces odbywa sie wedlug da-nych patentu niemieckiego Nr 360818. Spo¬ sób1* wedlug niniejszego wynalazku polega takze na tern, ze przy koncu stapiania do¬ daje sie nieco wyzej wspomnianej miesza¬ niny wprost na powierzchnie stopionego metalu; mieszanina ta nie tonie, mimo to, ze jest ona gatunkowo ciezsza od metalu i tworzy mniej lub wiecej zwarta skorupe, która nawet przy wylewaniu metalu z ty¬ gla czesciowo w nim pozostaje.Przy stosowaniu niniejszego sposobu, nawet gdyby bylo uzyte za duzo AfgCZ2, resztki tegoz nie przechodza do metalu.Wedlug niniejszego sposobu mozna oczyszczac nietylko odpadki, lecz takze rozmaicie zanieczyszczone stare metale lub wreszcie metale technicznie czyste. PLThe recovery of light metals from waste, according to German patent 360818, has in practice established that it is extremely difficult to determine the amount of impurities in the waste, which is necessary for the determination of MgCl2 for treatment at remelting. In order not to add too little AfgC / 2, it was usually used in excess, which again causes undesirable properties of the melt, as the MgCl2 absorption capacity of the formed kerosene turned out to be limited, and thus residual AfgC / 2 passes into the alloy Further work on the principle of recovering light metals found that the above inconveniences can be removed by adding instead magnesium chloride (or carnival) this salt with the addition of substances which with magnesium chloride do not form eutectics with a low melting point. These substances work as thickening agents as oxides (e.g. magnesia) and magnesium fluorides of calcium, aluminum and other metals. These substances can be added within fairly wide limits, but the addition to the magnesium chloride can be introduced at the beginning of the process or Also during proper melting, it is also possible to initially add pure MgCl2i or with a lower percentage of additive, and then introduce a mixture with a higher additive content. pre-melted mixtures of magnesium chloride and additive. In addition to this, the process is carried out according to the data of German Patent No. 360818. The method of the present invention also consists in the fact that at the end of melting, a slightly above-mentioned mixture is added nina straight to the surface of the molten metal; this mixture does not sink, although it is typically heavier than metal and forms a more or less dense crust which, even when the metal is poured from the crucible, partially remains in it. When using this method, even if too much AfgC2 were used, the residues of this do not pass into the metal. According to the present method, it is possible to treat not only waste but also variously contaminated old metals or finally technically pure metals. PL
Claims (3)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL5782B1 true PL5782B1 (en) | 1926-09-30 |
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