US1980480A - Purifying zinc metal - Google Patents

Purifying zinc metal Download PDF

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Publication number
US1980480A
US1980480A US650982A US65098233A US1980480A US 1980480 A US1980480 A US 1980480A US 650982 A US650982 A US 650982A US 65098233 A US65098233 A US 65098233A US 1980480 A US1980480 A US 1980480A
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US
United States
Prior art keywords
zinc
column
metal
retort
vapor
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
US650982A
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English (en)
Inventor
Philip M Ginder
George T Mahler
Howard M Cyr
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.)
New Jersey Zinc Co
Original Assignee
New Jersey Zinc Co
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 New Jersey Zinc Co filed Critical New Jersey Zinc Co
Priority to US650982A priority Critical patent/US1980480A/en
Priority to FR763559D priority patent/FR763559A/fr
Application granted granted Critical
Publication of US1980480A publication Critical patent/US1980480A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C22B19/00—Obtaining zinc or zinc oxide
    • C22B19/04—Obtaining zinc by distilling
    • C22B19/16—Distilling vessels
    • C22B19/18—Condensers, Receiving vessels
    • 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
    • C22B19/00—Obtaining zinc or zinc oxide
    • C22B19/04—Obtaining zinc by distilling
    • 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
    • C22B19/00—Obtaining zinc or zinc oxide
    • C22B19/32—Refining zinc

Definitions

  • This invention relates to purifying zinc metal by distillation, and has for its object the provision of certain improvements in the removal from impure zinc metal of lead and/ or cadmium and/or 6 other contaminating metals of higher or lower boiling points-than zinc.
  • reflux column 2. 5 to define a column or tower in which ascending metallic vapor moves in contact with descending (refluxing) molten metal resulting from condensation of ascending vapor; a substantial amount of refluxing molten metal being permitted to flow out of the base of the column and metallic vapor reaching the top of the column being appropriately recovered.
  • the present invention involves passing the metallic sulting from the distillation of impure zinc metal through a reflux column, and permitting the condensed metal refluxing back from the column to flow into a bath of molten metal other than the source of metallic vapor for the reflux column. so
  • the impure zinc metal may be distilled in a progressive series of retorts, each of which is operatively connected to an individual reflux column, and the molten metal refluxing back from each column may be permitted to flow intothe retort next in the progressive series to the retort delivering metallic vapor to that column.
  • Figs. 1, 2 and 3 are an end elevation (partly in section), a front elevation and a top plan, p v y, of an apparatus for carrying out the invention in a progressive series of distillation retorts, and
  • Figs. 4, 5 and 6 are an end elevation (partly in section), a front elevation and a top plan, respectively, of a continuous refluxing apparatus for the production of cadmium-free zinc in accordance with the invention.
  • the apparatus of Figs. 1, 2 and 3 comprises a plurality of distillation retorts and associated reflux columns so arranged in a progressive series that the zinc metal distilled in the retort connected to the flrst reflux column refluxes into a second retort connected to a second reflux column, and the metal refluxing in the second column is conducted to a third retort connected to a third reflux column.
  • the apparatus comprises three distillation retorts 10, 11 and 12 mounted in a common heating chamber or laboratory 13 of a furnace structure 14. Each retort is provided at its back. with a charging well 15 for supplying metal thereto and for removing residues therefrom.
  • any lead that may liquate from the molten metal in the retorts may be ladled out of the charging wells 15.
  • the three retorts are operatively connected through pipes l6, l7 and 18 with reflux columns 19, 20 and 21.
  • the reflux columns may be constructed in accordance with any of the modifications, or equiv packages thereof, disclosed in the aforementioned copending applications.
  • the zinc vapor purified from lead passes from the top of the reflux columns through pipes 22, 23 and 24: into condensers 25, 26 and 27.
  • the molten metal reaxing from column 19 flows from the bottom of the column through a pipe 28 the retort ll, similarly the refluxing molten metal from column as flows through pipe 29 into retort 12.
  • the molten metal refluxing from column 21 through pipe 39 may be returned to retort l? or may be separately collected.
  • the vapor evolved from the impure zinc metal charged into retort 10 contains less lead than does this impure metal, and the refluxing molten metal from the reflux column 19 removes a large proportion of the lead content of this vapor, so that the vapor discharged from the top of the reflux column 19 and recovered in the condenser 25 is relatively low in lead.
  • the molten metal refluxing from the reflux column 19 distills in the retort 11 with the production in the same way of relatively pure zinc metal in the condenser 26.
  • the refluxing molten metal from the reflux column 20 is distilled in the retort l2 and subjected to the purifying action of reflux column 21.
  • the retorts may be heated in separate combustion chambers, instead of in a common chamber. Any number of retorts may be included in the progressive series.
  • the pipes 16, 17 and 18 may enter their respective reflux columns at different levels, whereby metallic vapor enters the reflux columns at different levels in different stages in the progressive series.
  • Figs. 4, 5 and 6 illustrate an apparatus for purifying zinc from cadmium in a reflux or rectifying column, in which the molten metal refluxing from one rectifying column is conveyed to .a second retort for further redistillation and'puriflcation.
  • One or more pairs of retorts 31 and 32 ing zinc metal which comprises distilling two 105 are appropriately mounted in a common combustion chamber, retort 31 being placed above or at a higher level than retort 32. The upper retort is, introduced into the retort.
  • the cadmiumbearing zinc is volatilized in the retort 31, and the resulting vapor passes through a connection 34 into the rectifying column 35 where it is purified of cadmium by rectification.
  • the vapor ascending the column 35 becomesprogressivelyten metal descending the column becomes progressively freed of cadmium.
  • Cadmium vapor
  • the method of purifying zinc metal comprises distilling a plurality of baths of impure molten zinc metal in a series of separate retort passing the impure zinc vapor from each of said retorts through an individuaLreflux column where a substantial amount of said vapor is condensed to molten zinc, and permitting file condensed zinc refluxing back from each of said columns to flow into the retort in the series, following the retort delivering impure zinc vapor thereto.
  • the method of purifying zinc metal which comprises distilling two baths of molten zinc metal in separate retorts, passing the impure zinc vapor from said retorts through a common reflux column, and permitting the molten zinc refluxing back from said column to flow into only one of said retorts.
  • the method of purifying zinc metal which comprises distilling'zinc metal in a progressive series of retorts, passing the impure zinc vapor from each of-said retorts through an individual reflux column where a substantial amount of the vapor is condensed to molten zinc, permitting the molten .zinc refluxing back from each of said columns to flow into the retort next in said progressive series to the retort delivering impure zinc vapor to that column.
  • the method of purifying zinc metal which comprises distilling a bath of impure molten zinc metal in a retort, passing the resulting impure zinc vapor up through a reflux column in which the ascending vapor contacts with descending refluxing molten zinc resulting-from condensation of ascending vapor, permitting said descending refluxing molten zinc to flow into a bath of molten metal other than that in said retort and purifying the molten zinc reflux by distillation out 1 not reintroduced into the bath of impure zinc metal in the retort.
  • the method of purifying zinc metal which comprises distilling a bath of the impure molten zinc, passing the resulting impure zinc vapor through a reflux column where a substantial amount of the vapor is condensed to molten zinc,

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  • 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)
US650982A 1933-01-10 1933-01-10 Purifying zinc metal Expired - Lifetime US1980480A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US650982A US1980480A (en) 1933-01-10 1933-01-10 Purifying zinc metal
FR763559D FR763559A (fr) 1933-01-10 1933-11-07 Procédé de purification du zinc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US650982A US1980480A (en) 1933-01-10 1933-01-10 Purifying zinc metal

Publications (1)

Publication Number Publication Date
US1980480A true US1980480A (en) 1934-11-13

Family

ID=24611113

Family Applications (1)

Application Number Title Priority Date Filing Date
US650982A Expired - Lifetime US1980480A (en) 1933-01-10 1933-01-10 Purifying zinc metal

Country Status (2)

Country Link
US (1) US1980480A (fr)
FR (1) FR763559A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2430389A (en) * 1943-01-13 1947-11-04 Chubb William Frederick Apparatus for the condensation of metallic vapors
US2939783A (en) * 1957-05-22 1960-06-07 Lundevall Gustav Blom Zinc refining
US3768995A (en) * 1970-05-18 1973-10-30 T Calleja Procedure for manufacturing high quality zinc powder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2430389A (en) * 1943-01-13 1947-11-04 Chubb William Frederick Apparatus for the condensation of metallic vapors
US2939783A (en) * 1957-05-22 1960-06-07 Lundevall Gustav Blom Zinc refining
US3768995A (en) * 1970-05-18 1973-10-30 T Calleja Procedure for manufacturing high quality zinc powder

Also Published As

Publication number Publication date
FR763559A (fr) 1934-05-03

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