US1609967A - Process of refining tin - Google Patents
Process of refining tin Download PDFInfo
- Publication number
- US1609967A US1609967A US635115A US63511523A US1609967A US 1609967 A US1609967 A US 1609967A US 635115 A US635115 A US 635115A US 63511523 A US63511523 A US 63511523A US 1609967 A US1609967 A US 1609967A
- Authority
- US
- United States
- Prior art keywords
- tin
- scum
- molten
- impurities
- oxygen
- 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 - Lifetime
Links
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 title description 38
- 238000000034 method Methods 0.000 title description 13
- 238000007670 refining Methods 0.000 title description 10
- 239000012535 impurity Substances 0.000 description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 12
- 229910052760 oxygen Inorganic materials 0.000 description 12
- 239000001301 oxygen Substances 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 229910052785 arsenic Inorganic materials 0.000 description 5
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 5
- 239000007800 oxidant agent Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- -1 water Chemical compound 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052787 antimony Inorganic materials 0.000 description 2
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- PSBDWGZCVUAZQS-UHFFFAOYSA-N (dimethylsulfonio)acetate Chemical compound C[S+](C)CC([O-])=O PSBDWGZCVUAZQS-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B25/00—Obtaining tin
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B25/00—Obtaining tin
- C22B25/08—Refining
Definitions
- the bath of molten tin is supplied with an adequate addition of such elements, the formation heat of which per unit of oxygen is greater than that of tin, and subjected to reaction with a compound which will disengage oxygen, such as water, preferably in the form of steam, or with a gaseous mixture containing oxygen, such as air, whereby an oxidic scum is formed which, if the proportions of elements added and of oxygen introduced are regulated according to requirements, will take- 01f the impurities from the tin bath.
- a compound which will disengage oxygen such as water, preferably in the form of steam, or with a gaseous mixture containing oxygen, such as air
- the same efiect can be attained by first alloying the additional elements with thetin, separately producing the oxidic scum, and then introducing this scum into the molten tin to be refined. Furthermore, the scum used may be employed repeatedly until it has been made foul by the accumulationin it of the impurities referred to.
- the scum formed in this way is removed in any known manner from the tin bath after having sufliciently acted upon the latter.
- Another manner of carrying out the refining process consists in adding a number of differently acting elements simultaneously,
- the scum removed which still contains tin is subjected to a liquation process in order to recover the tin.
- the additional element eventually retained in the refined tin can be removed therefrom in any known way.
- a tin containing 0.28 percent of antimony, arsenic and copper may be refined by addingmetallic aluminum and the oxidizing medium, so as to reduce the content of the impurities mentioned to 0.01percent.
- a process for refining metallic tin which comprises introducing into molten tin elements the formation heat of which per unit of oxygen is greater thanthat of tin. subjecting the molten mass to the action of an oxidizing agent, and removing the impurities from the molten metal by means of the resulting scum.
- a process for refining metallic tin which comprises introducing into molten tin an element the formation heat of which per unit. of oxygen is greater than that of tin:
- a process for refining metallic tin which coniprises introducing into molten tin a metal the formation heat of which per unit of oxy en isgreater than that of tin, subjecting t e molten mass to the action of an oxidizing agent, and removing the impurities from the molten metal by means of the resulting scum.
- a process for refining metallic tin which comprises introducing into molten tin metals in alloy form the formation heat of which .per unit of oxygen is "reater than that of tin, subjecting the molten mass to the action of an oxidizing agent, and removin the impurities from the molten metal by means of the resulting scum.
- a process for refining metallic tin which comprises introducing into molten tin elements the formation heat of which per unit of oxygen is greater than that of tin,' and producing by the addition of oxy en disenga ing substances a scum which ta es oil the impurities from the molten metal.
- a process for refining metallic tin, 'WhlCll comprises adding to the molten tin elements the formation heat of which per unit of oxygen is greater than that of tin, in the form of scum separately produced by treating such elements with oxygen disengaging substances, removing the scum, and using said scum for treating other baths of molten tin.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
Patented Dec. 7, 1926,
' UNITED. STATES PATENT OFFICE.
PROCESS OF BEFINING TIN.
No Drawing. Application'filed April 27, 1923, Serial No. 635,115, and in Germany April 29, 1922.
The essential points of the invention un der consideration are the following:
The bath of molten tin is supplied with an adequate addition of such elements, the formation heat of which per unit of oxygen is greater than that of tin, and subjected to reaction with a compound which will disengage oxygen, such as water, preferably in the form of steam, or with a gaseous mixture containing oxygen, such as air, whereby an oxidic scum is formed which, if the proportions of elements added and of oxygen introduced are regulated according to requirements, will take- 01f the impurities from the tin bath.
The same efiect can be attained by first alloying the additional elements with thetin, separately producing the oxidic scum, and then introducing this scum into the molten tin to be refined. Furthermore, the scum used may be employed repeatedly until it has been made foul by the accumulationin it of the impurities referred to.
The scum formed in this way is removed in any known manner from the tin bath after having sufliciently acted upon the latter.
In some cases, it is advantageous not to introduce the total amount of the additional 4 element or elements initially, but to add the same by portions. Thereby it is possible not only to limit at will the purifying action with regard to the removal-of an individual impurity, but also to extract one impurity from the tin leaving another therein. It is to be stated that the lmpurities are not necessarily taken ofl at the same rate and in proportion with theamounts present in the tin,
- but may be removed one after the" other.
The reaction of the additional elements, too, is by no means the same in any case since one element does not act upon quite the same impurities as another. In order to isolate oneof the impurities the refining process can be carried out in such a manner that this impurity is taken off by means ot a suitable addition element, whereupon the rest of the impurities is removed by means of another element acting especially upon this residue.
Another manner of carrying out the refining process consists in adding a number of differently acting elements simultaneously,
for instance in an alloyed condition.
The scum removed which still contains tin is subjected to a liquation process in order to recover the tin. The additional element eventually retained in the refined tin can be removed therefrom in any known way.
In order to make the invention more clearly understood, by way of example, some results obtained when carrying out the process on a manufacturing scale, may be stated:
1. By adding sodium to molten tin containing 0.09 percent of arsenic and by forming a scum. and subsequently separating the scum, the tin' was found to contain .only 0.03
percent of arsenic.
2. By treating in the same manner as mentioned in Example 1 molten tin containing 0.18 percent of antimony together with arsenic, with metallic calcium the amount of these impurities was reduced to 0.07 percent.
3. By adding metallic zinc to molten tin containing 0.08 per cent of arsenic and applying the oxidizing medium. the amountof this impurity was reduced down to 0.005 percent.
4. A tin containing 0.28 percent of antimony, arsenic and copper may be refined by addingmetallic aluminum and the oxidizing medium, so as to reduce the content of the impurities mentioned to 0.01percent.
From this example it is to be seen that aluminum has a special purifying effect, since copper is removed.
What we claim is:
1. A process for refining metallic tin, which comprises introducing into molten tin elements the formation heat of which per unit of oxygen is greater thanthat of tin. subjecting the molten mass to the action of an oxidizing agent, and removing the impurities from the molten metal by means of the resulting scum.
2. A process for refining metallic tin. which comprises introducing into molten tin an element the formation heat of which per unit. of oxygen is greater than that of tin:
subjectingthe molten mass to the action of an oxidizing agent, and .removingthe v impurities from themolten metal by means of the resulting scum.
3. A process for refining metallic tin, which coniprises introducing into molten tin a metal the formation heat of which per unit of oxy en isgreater than that of tin, subjecting t e molten mass to the action of an oxidizing agent, and removing the impurities from the molten metal by means of the resulting scum.
4. A process for refining metallic tin, which comprises introducing into molten tin metals in alloy form the formation heat of which .per unit of oxygen is "reater than that of tin, subjecting the molten mass to the action of an oxidizing agent, and removin the impurities from the molten metal by means of the resulting scum.
5. A process for refining metallic tin, which comprises introducing into molten tin elements the formation heat of which per unit of oxygen is greater than that of tin,' and producing by the addition of oxy en disenga ing substances a scum which ta es oil the impurities from the molten metal.
6. A process for refining metallic tin,
which comprises adding to the molten tin elements the formation heat of which per unit of oxygen is greater than that of tin,
ition of oxygen disengaging substances;
removing the scum and using said scum for treating other baths of molten tin.
8 A process for refining metallic tin, 'WhlCll comprises adding to the molten tin elements the formation heat of which per unit of oxygen is greater than that of tin, in the form of scum separately produced by treating such elements with oxygen disengaging substances, removing the scum, and using said scum for treating other baths of molten tin. v
In witness whereof we have hereunto set our hands.
LUDWIG SCHERTEL. WILLI LUTY
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1609967X | 1922-04-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1609967A true US1609967A (en) | 1926-12-07 |
Family
ID=7737093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US635115A Expired - Lifetime US1609967A (en) | 1922-04-29 | 1923-04-27 | Process of refining tin |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1609967A (en) |
-
1923
- 1923-04-27 US US635115A patent/US1609967A/en not_active Expired - Lifetime
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