US1004676A - Process for refining silver bullion. - Google Patents

Process for refining silver bullion. Download PDF

Info

Publication number
US1004676A
US1004676A US53573109A US1909535731A US1004676A US 1004676 A US1004676 A US 1004676A US 53573109 A US53573109 A US 53573109A US 1909535731 A US1909535731 A US 1909535731A US 1004676 A US1004676 A US 1004676A
Authority
US
United States
Prior art keywords
bullion
silver bullion
refining
refining silver
speiss
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
Application number
US53573109A
Inventor
Balmer Neilly
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US53573109A priority Critical patent/US1004676A/en
Application granted granted Critical
Publication of US1004676A publication Critical patent/US1004676A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

  • My invention relates to an improved process for refining silver bullion and the object of the invention is to provide a process in which the loss will be exceedingly low and the cost of refining small.
  • the apparatus I now use for carrying out the above process comprises a suitable furnace and means for supplying a blast of air to the surface of the molten metal contained in the furnace.
  • the process for refining silver bullion consisting in first melting the bullion and adding to the fused metal iron to form a speiss then suddenly cooling the metal to separate the bullion from the speiss then remelting the bullion and covering the surface of the melted bullion with a flux of a mixture of sand and boraX and finally subjecting the surface of the flux to a blast of air, as and for the purpose specified.

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

BALMER NEILLY, OF BRADFORD, ONTARIO, CANADA.
PROCESS FOR REFIN'ING SILVER BULLION.
No Drawing.
Specification of Letters Patent.
Application filed December 31, 1909.
Patented Oct. 3, 1911.
Serial No. 535,731.
To all whom it may concern:
Be it known that I, BALMER NEILLY, of the town of Bradford, in the county of Simcoe, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Improved Processes for Itefining Silver Bullion, of which the following is the specification.
My invention relates to an improved process for refining silver bullion and the object of the invention is to provide a process in which the loss will be exceedingly low and the cost of refining small.
The apparatus I now use for carrying out the above process comprises a suitable furnace and means for supplying a blast of air to the surface of the molten metal contained in the furnace.
In order to get rid of nickel copper or cobalt present along with as much arsenic and antimony as possible I form what is termed a speiss. In order to do this the bullion is melted down in the cyclone furnace at about a temperature of 11 10 C. and iron in the form of nails added until the iron is attacked by the arsenic and antimony present. The crucible is then removed and cooled suddenly. Under these conditions the speiss separates cleanly from the bullion. The bullion is again melted down at a temperature of about 1090 C. with enough flux such as sand and borax to form a thin covering on the top of the molten metal. Air With sufficient pressure to cause a depression of about 9; of an inch on the surface is then blown on the metal until the arsenic first and then antimony are oxidized off leaving the bullion pure. This point of course is easily determined. Samples are dipped out and after cooling hammered. If they are inclined to be brittle to the least degree the metal still retains some impurities. Even a small fraction of one per cent. impurities will cause it to crack. Again on becoming pure the molten metal changes from white to a clear sea green in color.
The above process it will be seen is accomplished with a very simple apparatus and is cheap and quick.
What I claim as my invention is:
The process for refining silver bullion consisting in first melting the bullion and adding to the fused metal iron to form a speiss then suddenly cooling the metal to separate the bullion from the speiss then remelting the bullion and covering the surface of the melted bullion with a flux of a mixture of sand and boraX and finally subjecting the surface of the flux to a blast of air, as and for the purpose specified.
BALMER NEILLY.
Witnesses:
R. GOBAIN, B. Born.
Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.
US53573109A 1909-12-31 1909-12-31 Process for refining silver bullion. Expired - Lifetime US1004676A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US53573109A US1004676A (en) 1909-12-31 1909-12-31 Process for refining silver bullion.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US53573109A US1004676A (en) 1909-12-31 1909-12-31 Process for refining silver bullion.

Publications (1)

Publication Number Publication Date
US1004676A true US1004676A (en) 1911-10-03

Family

ID=3072990

Family Applications (1)

Application Number Title Priority Date Filing Date
US53573109A Expired - Lifetime US1004676A (en) 1909-12-31 1909-12-31 Process for refining silver bullion.

Country Status (1)

Country Link
US (1) US1004676A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2485542A (en) * 1945-01-25 1949-10-25 Socony Vacuum Oil Co Inc Protection of heat transfer media
US3892562A (en) * 1970-01-20 1975-07-01 Pyromet Inc Process for producing high purity silver
US3902890A (en) * 1973-03-12 1975-09-02 Int Nickel Co Refining silver-bearing residues

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2485542A (en) * 1945-01-25 1949-10-25 Socony Vacuum Oil Co Inc Protection of heat transfer media
US3892562A (en) * 1970-01-20 1975-07-01 Pyromet Inc Process for producing high purity silver
US3902890A (en) * 1973-03-12 1975-09-02 Int Nickel Co Refining silver-bearing residues

Similar Documents

Publication Publication Date Title
Charles Early arsenical bronzes—a metallurgical view
US1004676A (en) Process for refining silver bullion.
US792632A (en) Manufacture of salt.
US905281A (en) Process of making manganese and ferromanganese.
US513660A (en) Claude theodore james vautin
US489882A (en) Method of producing an d separating sulphide of nickel
US801820A (en) Process of extracting tin from tin-lead alloys.
SU1735408A1 (en) Process for treating slags for production of heavy nonferrous metals
RU2525959C1 (en) Processing of gold-bearing inorganic materials including processing of jewellery scrap and gold refining
US692310A (en) Method of treating copper ores.
US811239A (en) Manufacture of nickel-copper alloys.
US1060527A (en) Process of extracting tin from base bullion.
US519217A (en) Process of converting and smelting precious ores
US698163A (en) Process of refining spelter.
US588204A (en) westman
US1013931A (en) Reduction of silver ores.
US800130A (en) Process of separating nickel from mattes.
US153743A (en) Improvement in refining copper
US810364A (en) Method of saving metal values from slag.
US1362381A (en) Detinning
US859594A (en) Process for extracting tin from iron-containing tin products.
US1072753A (en) Process for treating ores.
US851167A (en) Process of purifying metals.
UA82034C2 (en) Method for refining of scrap of copper alloys
US159801A (en) Improvement in refining copper