US480416A - Heinrich roessler - Google Patents
Heinrich roessler Download PDFInfo
- Publication number
- US480416A US480416A US480416DA US480416A US 480416 A US480416 A US 480416A US 480416D A US480416D A US 480416DA US 480416 A US480416 A US 480416A
- Authority
- US
- United States
- Prior art keywords
- lead
- zinc
- roessler
- heinrich
- silver
- 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
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 14
- 229910052725 zinc Inorganic materials 0.000 description 14
- 239000011701 zinc Substances 0.000 description 14
- 239000004411 aluminium Substances 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- -1 zinc-silver Chemical compound 0.000 description 6
- 229910001316 Ag alloy Inorganic materials 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 210000001138 Tears Anatomy 0.000 description 2
- 229910000611 Zinc aluminium Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000717 retained Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
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
- C22B13/00—Obtaining lead
- C22B13/06—Refining
Definitions
- HEINRICH ROESSLER OF FRANKFORT-ON-THE-MAIN, GERMANY, ASSIGNOR OF ONE-HALF TO BERNHARD EDELMANN, OF SAME PLACE.
- This invention has for its object to produce a substance from which the lead may be readily and completely isolated.
- WVhen lead is desilverized in the ordinary manner by fusing the lead with zinc, instead of two well-defined layers of zinc-silver alloy and lead being form ed,as theoretically required,lead containing zinc is obtained and a mixture of zincsilver particles with lead, (so-called zincscum,) from which only half the lead can be removed by eliquation, the remainder being retained with such tenacity that it can only be separated by a tedious and expensive method, entailing loss of metal.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Thyristors (AREA)
Description
UNITED STATES PATENT OFFICE.
HEINRICH ROESSLER, OF FRANKFORT-ON-THE-MAIN, GERMANY, ASSIGNOR OF ONE-HALF TO BERNHARD EDELMANN, OF SAME PLACE.
ART OF DESILVERIZING ARGENTIFEROUS LEAD.
SPECIFICATION forming part of Letters Patent No. 480,416, dated August 9, 1892.
Application filed June 13,1891. Serial No. 396,186. (No specimens.) Patented in Germany June 29, 1890,110. 56,271.
To all whom it may concern:
Be it known that I, HEINRICH ROESSLER, of Frankfort-on-the-Main, in the Empire of Germany, have invented a new and useful Improvement in the Desilverization of Argentiferous Lead, (for which I have received Letters Patent in Germany, No. 56,271, dated June 29, 1890,) of which the following is a specification.
This invention has for its object to produce a substance from which the lead may be readily and completely isolated. WVhen lead is desilverized in the ordinary manner by fusing the lead with zinc, instead of two well-defined layers of zinc-silver alloy and lead being form ed,as theoretically required,lead containing zinc is obtained and a mixture of zincsilver particles with lead, (so-called zincscum,) from which only half the lead can be removed by eliquation, the remainder being retained with such tenacity that it can only be separated by a tedious and expensive method, entailing loss of metal. The cause of this retention is due to the formation, at the high temperature, of oxides, which interpose between the particles of lead and zinc-silver, and thus prevent the separation. I have, however, discovered that an addition of, say, at most one-half of one per cent. of aluminium 0 to the zinc very effectually hinders its oxidation, and by the employment of this means skimmingsare produced, (without extra labor,) from which a homogeneous zinc-silver alloy containing all the silver can be easily and completely separated, to be then treated electrolytically without requiring any separate and distinct treatment for the separation of the aluminium, the latter being in such small quantity as to disappear in the course of the process by oxidation. The whole of the zinc contained in the skimmings is recovered, and while effecting a saving of time, wages, fuel, zinc, and wear and tear of plant a much higher yield of silver is produced than by any method hitherto employed.
I am aware that the employment of a zincaluminium alloy in the desilverization of argentiferous lead is not new, and therefore I do not claim, broadly, the use of such alloy for that purpose; but
that I claim as my invention, and desire to secure by Letters Patent, is
The within-described improvement in the process of desilverization of argentiferous lead, consisting in fusing the lead with an al- 10y of zinc and aluminium in the proportions of not more than one-half of one per cent. of aluminium to the zinc.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
HEINRICH ROESSLER.
Witnesses:
F. TRAUB, I-I. OPIFICIUS.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US480416A true US480416A (en) | 1892-08-09 |
Family
ID=2549268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US480416D Expired - Lifetime US480416A (en) | Heinrich roessler |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US480416A (en) |
-
0
- US US480416D patent/US480416A/en not_active Expired - Lifetime
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