CA2060878A1 - Process of roasting refractory gold ores - Google Patents

Process of roasting refractory gold ores

Info

Publication number
CA2060878A1
CA2060878A1 CA002060878A CA2060878A CA2060878A1 CA 2060878 A1 CA2060878 A1 CA 2060878A1 CA 002060878 A CA002060878 A CA 002060878A CA 2060878 A CA2060878 A CA 2060878A CA 2060878 A1 CA2060878 A1 CA 2060878A1
Authority
CA
Canada
Prior art keywords
gold ores
refractory gold
fluidized bed
roasting refractory
reactor
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
CA002060878A
Other languages
French (fr)
Other versions
CA2060878C (en
Inventor
Arno Fitting
Martin Hirsch
Hans-Hermann Kofalck
Bodo Peinemann
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.)
GEA Group AG
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
Publication of CA2060878A1 publication Critical patent/CA2060878A1/en
Application granted granted Critical
Publication of CA2060878C publication Critical patent/CA2060878C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B01J8/1845—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles with particles moving upwards while fluidised
    • B01J8/1863—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles with particles moving upwards while fluidised followed by a downward movement outside the reactor and subsequently re-entering it
    • 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
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/02—Roasting processes
    • C22B1/10—Roasting processes in fluidised form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/02—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
    • F23C10/04—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone
    • F23C10/08—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases
    • F23C10/10—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases the separation apparatus being located outside the combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2206/00—Fluidised bed combustion
    • F23C2206/10—Circulating fluidised bed
    • F23C2206/101—Entrained or fast fluidised bed

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Metallurgy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)

Abstract

Refractory gold ores are roasted by means of oxygen-containing gases in a circulating fluidized bed at temperatures of 500 to 750°C. The temperature in the lower portion of the fluidized bed contained in the reactor is adjusted to be 4 to 30°C higher than the temperature in the upper portion of the fluidized bed. The fluidizing gas is caused to floor into the reactor at a velocity of 30 to 200 m/sec.
CA002060878A 1991-02-09 1992-02-07 Process of roasting refractory gold ores Expired - Lifetime CA2060878C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4103965A DE4103965C1 (en) 1991-02-09 1991-02-09
DEP4103965.3 1991-02-09

Publications (2)

Publication Number Publication Date
CA2060878A1 true CA2060878A1 (en) 1992-08-10
CA2060878C CA2060878C (en) 2003-01-28

Family

ID=6424724

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002060878A Expired - Lifetime CA2060878C (en) 1991-02-09 1992-02-07 Process of roasting refractory gold ores

Country Status (8)

Country Link
EP (1) EP0501542B1 (en)
AU (1) AU643870B2 (en)
BR (1) BR9200431A (en)
CA (1) CA2060878C (en)
DE (2) DE4103965C1 (en)
ES (1) ES2087427T3 (en)
OA (1) OA09588A (en)
ZA (1) ZA92946B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5380504A (en) * 1993-04-23 1995-01-10 Fuller Company Treatment of gold bearing ore
US7854608B2 (en) 2002-12-23 2010-12-21 Outotec Oyj Method and apparatus for heat treatment in a fluidized bed
CN107810282A (en) * 2015-05-12 2018-03-16 奥图泰(芬兰)公司 The partial roasting method of the concentrate of cupric and/or gold

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA926237B (en) * 1991-09-25 1993-03-03 Bhp Utah Int Inc Sulfide roasting with lime.
DE4329417C1 (en) * 1993-09-01 1994-08-18 Metallgesellschaft Ag Process for roasting refractory gold ores
US5972302A (en) * 1996-08-27 1999-10-26 Emr Microwave Technology Corporation Method for the microwave induced oxidation of pyritic ores without the production of sulphur dioxide
DE19719481C2 (en) * 1997-05-07 2000-09-07 Metallgesellschaft Ag Process for setting a circulating fluidized bed
AUPP208498A0 (en) * 1998-03-02 1998-03-26 Arton (No 001) Pty Ltd Gold recovery process
DE10260731B4 (en) 2002-12-23 2005-04-14 Outokumpu Oyj Process and plant for the heat treatment of iron oxide-containing solids
DE10260734B4 (en) 2002-12-23 2005-05-04 Outokumpu Oyj Process and plant for the production of carbon coke
DE10260738A1 (en) 2002-12-23 2004-07-15 Outokumpu Oyj Process and plant for conveying fine-grained solids
DE10260739B3 (en) 2002-12-23 2004-09-16 Outokumpu Oy Process and plant for producing metal oxide from metal compounds
DE10260733B4 (en) 2002-12-23 2010-08-12 Outokumpu Oyj Process and plant for the heat treatment of iron oxide-containing solids
DE10260737B4 (en) 2002-12-23 2005-06-30 Outokumpu Oyj Process and plant for the heat treatment of titanium-containing solids
DE102019209044A1 (en) * 2019-06-21 2020-12-24 Litherm Technologies GmbH PROCESS AND DEVICE FOR MANUFACTURING FIRED END PRODUCTS FROM NATURAL GRAINY MATERIALS CONTAINING CARBONATE AS EDUCT
DE102019209043A1 (en) * 2019-06-21 2020-12-24 Litherm Technologies GmbH PROCESS FOR MANUFACTURING FIRED END PRODUCTS FROM NATURAL, CARBONATE-CONTAINING GRAINY SUBSTANCES AS EDUCT AND DEVICE FOR CARRYING OUT THIS PROCESS
PL3799592T3 (en) 2019-06-21 2022-07-18 Litherm Technologies GmbH Method and device for producing fired end products from natural, carbonaceous, granular materials as starting material

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2650159A (en) * 1949-11-23 1953-08-25 Dorr Co Treating arsenical gold ores
US2596580A (en) * 1950-01-05 1952-05-13 Dorr Co Treating arsenical gold ores
DE2624302A1 (en) * 1976-05-31 1977-12-22 Metallgesellschaft Ag PROCEDURE FOR CARRYING OUT EXOTHERMAL PROCESSES
US4919715A (en) * 1988-06-03 1990-04-24 Freeport Mcmoran Inc. Treating refractory gold ores via oxygen-enriched roasting

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5380504A (en) * 1993-04-23 1995-01-10 Fuller Company Treatment of gold bearing ore
US7854608B2 (en) 2002-12-23 2010-12-21 Outotec Oyj Method and apparatus for heat treatment in a fluidized bed
CN107810282A (en) * 2015-05-12 2018-03-16 奥图泰(芬兰)公司 The partial roasting method of the concentrate of cupric and/or gold
CN107810282B (en) * 2015-05-12 2020-03-27 奥图泰(芬兰)公司 Method for partial roasting of copper and/or gold containing concentrates

Also Published As

Publication number Publication date
EP0501542A1 (en) 1992-09-02
AU643870B2 (en) 1993-11-25
DE59206264D1 (en) 1996-06-20
EP0501542B1 (en) 1996-05-15
OA09588A (en) 1993-04-30
BR9200431A (en) 1992-10-13
ZA92946B (en) 1993-08-10
DE4103965C1 (en) 1992-04-09
ES2087427T3 (en) 1996-07-16
AU1076992A (en) 1992-08-13
CA2060878C (en) 2003-01-28

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Legal Events

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