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FR2134038A1 - Removal of arsenic - from iron ore - Google Patents

Removal of arsenic - from iron ore

Info

Publication number
FR2134038A1
FR2134038A1 FR7214265A FR7214265A FR2134038A1 FR 2134038 A1 FR2134038 A1 FR 2134038A1 FR 7214265 A FR7214265 A FR 7214265A FR 7214265 A FR7214265 A FR 7214265A FR 2134038 A1 FR2134038 A1 FR 2134038A1
Authority
FR
France
Prior art keywords
furnace
ore
gas
rotation
arsenic
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
FR7214265A
Other languages
French (fr)
Other versions
FR2134038B1 (en
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.)
CONSILIUL NATIONAL PENTRU
Original Assignee
CONSILIUL NATIONAL PENTRU
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 CONSILIUL NATIONAL PENTRU filed Critical CONSILIUL NATIONAL PENTRU
Publication of FR2134038A1 publication Critical patent/FR2134038A1/en
Application granted granted Critical
Publication of FR2134038B1 publication Critical patent/FR2134038B1/fr
Granted 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
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/02—Roasting processes
    • 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
    • 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
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Treating Waste Gases (AREA)

Abstract

The As is removed to a level below 0.03%. The finely ground ore is mixed with 2-3% carbonaceous combustible material and passed through a rotating furnace in which natural gas is burnt in air with a gas/air ratio between 10 and 14. The ore passes in the opposite direction to the gas fumes. The speed of rotation and inclination of the furnace are adjusted so that charge remains 1.5-2 hr. in the furnace. The atmosphere and temp. are controlled so that As is eliminated in the form of gaseous As2O3 and the ore at the discharge point is softened and due to the rotation of the furnace forms granules which may be directly utilised in the blast furnace.
FR7214265A 1971-04-21 1972-04-21 Removal of arsenic - from iron ore Granted FR2134038A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO66638A RO55272A2 (en) 1971-04-21 1971-04-21

Publications (2)

Publication Number Publication Date
FR2134038A1 true FR2134038A1 (en) 1972-12-01
FR2134038B1 FR2134038B1 (en) 1974-12-20

Family

ID=20088965

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7214265A Granted FR2134038A1 (en) 1971-04-21 1972-04-21 Removal of arsenic - from iron ore

Country Status (3)

Country Link
ES (1) ES401888A1 (en)
FR (1) FR2134038A1 (en)
RO (1) RO55272A2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3427149A (en) * 1966-02-14 1969-02-11 Inland Steel Co Process for removing arsenic from iron ore

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3427149A (en) * 1966-02-14 1969-02-11 Inland Steel Co Process for removing arsenic from iron ore

Also Published As

Publication number Publication date
ES401888A1 (en) 1975-03-16
FR2134038B1 (en) 1974-12-20
RO55272A2 (en) 1973-05-17

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Legal Events

Date Code Title Description
ST Notification of lapse