EP0152332A2 - Bleireinigungsverfahren - Google Patents

Bleireinigungsverfahren Download PDF

Info

Publication number
EP0152332A2
EP0152332A2 EP85400154A EP85400154A EP0152332A2 EP 0152332 A2 EP0152332 A2 EP 0152332A2 EP 85400154 A EP85400154 A EP 85400154A EP 85400154 A EP85400154 A EP 85400154A EP 0152332 A2 EP0152332 A2 EP 0152332A2
Authority
EP
European Patent Office
Prior art keywords
lead
cauldron
insulator
temperature
taken separately
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.)
Granted
Application number
EP85400154A
Other languages
English (en)
French (fr)
Other versions
EP0152332B1 (de
EP0152332A3 (en
Inventor
Georges Althabegoity
Benoit Bied-Charreton
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.)
Metaleurop SA
Original Assignee
Metaleurop SA
Societe Miniere et Metallurgique de Penarroya
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 Metaleurop SA, Societe Miniere et Metallurgique de Penarroya filed Critical Metaleurop SA
Priority to AT85400154T priority Critical patent/ATE45188T1/de
Publication of EP0152332A2 publication Critical patent/EP0152332A2/de
Publication of EP0152332A3 publication Critical patent/EP0152332A3/fr
Application granted granted Critical
Publication of EP0152332B1 publication Critical patent/EP0152332B1/de
Expired 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
    • C22B13/00—Obtaining lead
    • C22B13/06—Refining

Definitions

  • the subject of the present invention is a new process for purifying an impure lead, often called "working lead”.
  • the lead is generally produced in a reduction furnace such as ovens called “water-jackets", rotary ovens or else by ISP processes (Imperial Smelting Process) and leaves these ovens at a temperature of 1000 ° C approx.
  • a reduction furnace such as ovens called “water-jackets”, rotary ovens or else by ISP processes (Imperial Smelting Process) and leaves these ovens at a temperature of 1000 ° C approx.
  • metals or metalloids are soluble in lead.
  • metals metalloids or compounds, mention may be made of Cu 2 S, PbS, Cu, As, Sb, Sn, etc.
  • Skimming removes these impurities and gives a purer lead.
  • this process has many drawbacks because it can only be carried out discontinuously. It is formed on the surface of large blocks which are difficult to skim and remove. We even obtain pasty products which do not allow any automatic recovery.
  • This process allowed continuous purification of lead but lacks a lot of flexibility since it is necessary to maintain the relationships between sulfur, arsenic and copper within a certain range while keeping the arsenic content at fairly low levels. This process is therefore not applicable to ores which lead to lead which deviates from certain copper, sulfur and arsenic contents.
  • this object has been achieved by means of a process for continuous purification of working lead by cooling, characterized in that said liquid working lead is introduced into a bath of liquid metallic lead thermostatically controlled at a temperature below about 500 ° C and with stirring and in that the pulverulent materials which accumulate on the surface are recovered.
  • agitation must have two components, a peripheral component and a radial or convection component.
  • the latter which corresponds to the downward movement along the axis of the tank towards the bottom then along the bottom towards the periphery of the tank, then upwards along the walls and finally on the surface of the bath from the periphery towards the center is very important for the heat exchange between the lead to be purified and the walls of the tank and for maintaining a low temperature gradient.
  • the other component, the peripheral also plays a role in maintaining a low temperature gradient because a high peripheral linear speed induces vortex movements, which, through exchanges which they facilitate between the lead-tank interface and the lead located more inside said tank ensures a certain thermal homogeneity in the lead bath. Good results can be obtained by choosing a peripheral speed between 0.5 and 5 meters per second.
  • the speed of the convection component in the vicinity of the vertical walls of the tank is advantageously chosen to be less than the peripheral speed, preferably 0.1 to 0.5 times. the latter.
  • the speed in the vicinity of the walls and the bottom of the tank, resulting from the combination of these two components, is such that there is advantageously a difference of at most 20, preferably at most 10 ° C, between the temperature of the wall of the tank and that of lead 5 centimeters from this wall.
  • These components can be produced, for example, with two types of agitation mobile, the convection component with a turbine agitator whose diameter is less than half the diameter of the tank and the peripheral component with one or more mobile with substantially vertical blades. .
  • the temperature of the cnaudron is very precisely maintained at the set value, less than 500 ° C, preferably between 400 and 450 ° C, and this regulation must be carried out with a tolerance less than 20 ° C. Indeed, it should not be too high in temperature, otherwise we would get the pasty products mentioned above or large blocks.
  • this device for purifying lead from work is characterized in that it comprises a cauldron 1 surrounded by an insulator 3, an es pace 2 being made between the insulation 3 and the cauldron 1 to allow air to circulate in this space, to cool the cauldron said air being injected by means of a pipe 4 and evacuated by an annular opening 5 located at the upper part of the cauldron, the insulator 3 being covered with a coil 6 making it possible to heat the cauldron by induction.
  • this device allows the evacuation of calories through the walls of the cauldron while maintaining a very low temperature gradient within the latter and this by means of air circulation, or any other suitable fluid, however that '' in the event of a too rapid drop in temperature in the cauldron or a temperature gradient between the outer wall and the bath that is too high, it is possible to rapidly supply a significant amount of heat by means of said coil which operates by induction .
  • the cnaudron must also be equipped with a device for extracting powdery dirt.
  • This device can be chosen from all the already known devices operating at said temperatures. We can cite for example pneumatic vacuum cleaners, wheels, shovels ...
  • This extraction of dross can be carried out in two different ways: either directly in the quenching cauldron, or in another tank placed in series. For an installation operating in series, it is advantageous to have a tank placed in series.
  • This operation can be, in certain cases, advantageously used with a contribution of compounds likely to generate sulfur such as for example pyrite and elemental sulfur itself.

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)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Control Of El Displays (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Paper (AREA)
  • Glass Compositions (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Processing Of Solid Wastes (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
EP85400154A 1984-02-03 1985-01-31 Bleireinigungsverfahren Expired EP0152332B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85400154T ATE45188T1 (de) 1984-02-03 1985-01-31 Bleireinigungsverfahren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8401740 1984-02-03
FR8401740A FR2559161A1 (fr) 1984-02-03 1984-02-03 Nouveau procede de purification du plomb

Publications (3)

Publication Number Publication Date
EP0152332A2 true EP0152332A2 (de) 1985-08-21
EP0152332A3 EP0152332A3 (en) 1985-09-18
EP0152332B1 EP0152332B1 (de) 1989-08-02

Family

ID=9300771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85400154A Expired EP0152332B1 (de) 1984-02-03 1985-01-31 Bleireinigungsverfahren

Country Status (13)

Country Link
EP (1) EP0152332B1 (de)
JP (1) JPH0613740B2 (de)
AT (1) ATE45188T1 (de)
BR (1) BR8505003A (de)
CA (1) CA1259494A (de)
DE (1) DE3572010D1 (de)
ES (1) ES540013A0 (de)
FI (1) FI78124C (de)
FR (1) FR2559161A1 (de)
GR (1) GR850275B (de)
MA (1) MA20339A1 (de)
MX (1) MX168094B (de)
WO (1) WO1985003526A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2659665A1 (fr) * 1990-03-15 1991-09-20 Metaleurop Sa Procede d'affinage, notamment de decuivrage, du plomb.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2956871A (en) * 1958-02-10 1960-10-18 American Smelting Refining Vacuum dezincing of lead
FR1369339A (fr) * 1962-12-27 1964-08-14 Broken Hill Ass Smelter Procédé d'écumage du cuivre de plomb non raffiné et appareil pour sa mise en oeuvre
ES302999A1 (es) * 1963-08-12 1965-01-16 Metallgesellschaft Ag Un procedimiento para la extracciën continua de cobre y compuestos de cobre contenidos en el plano
DE2803858C2 (de) * 1978-01-30 1983-09-15 Klöckner-Humboldt-Deutz AG, 5000 Köln Anlage zur kontinuierlichen Raffination von schmelzflüssigem Rohmaterial, insbesondere von Rohblei oder Rohzinn
IN159763B (de) * 1982-07-16 1987-06-06 Bnf Metals Tech Centre
US4427629A (en) * 1982-11-23 1984-01-24 Gnb Batteries Inc. Process for metal-enrichment of lead bullion
US4425160A (en) * 1982-11-23 1984-01-10 Gnb Batteries Inc. Refining process for removing antimony from lead bullion

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2659665A1 (fr) * 1990-03-15 1991-09-20 Metaleurop Sa Procede d'affinage, notamment de decuivrage, du plomb.
EP0456528A1 (de) * 1990-03-15 1991-11-13 Metaleurop S.A. Verfahren zum Raffinieren von Blei, insbesondere zum Entfernen von Kupfer
AU635398B2 (en) * 1990-03-15 1993-03-18 Metaleurop S.A. Process for refining, especially for removing copper from, lead

Also Published As

Publication number Publication date
DE3572010D1 (en) 1989-09-07
MX168094B (es) 1993-05-03
JPH0613740B2 (ja) 1994-02-23
ES8602146A1 (es) 1985-11-16
FI850430L (fi) 1985-08-04
ATE45188T1 (de) 1989-08-15
EP0152332B1 (de) 1989-08-02
WO1985003526A1 (fr) 1985-08-15
FI850430A0 (fi) 1985-02-01
BR8505003A (pt) 1986-01-21
FI78124C (fi) 1989-06-12
FR2559161A1 (fr) 1985-08-09
ES540013A0 (es) 1985-11-16
JPS60234929A (ja) 1985-11-21
MA20339A1 (fr) 1985-10-01
FI78124B (fi) 1989-02-28
EP0152332A3 (en) 1985-09-18
GR850275B (de) 1985-05-28
CA1259494A (fr) 1989-09-19

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