GB484757A - Process for concentrating low-grade iron ores - Google Patents

Process for concentrating low-grade iron ores

Info

Publication number
GB484757A
GB484757A GB13676/37A GB1367637A GB484757A GB 484757 A GB484757 A GB 484757A GB 13676/37 A GB13676/37 A GB 13676/37A GB 1367637 A GB1367637 A GB 1367637A GB 484757 A GB484757 A GB 484757A
Authority
GB
United Kingdom
Prior art keywords
iron
constituents
pneumatic concentration
phosphorites
subjected
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
Application number
GB13676/37A
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
Metallgesellschaft AG
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 Metallgesellschaft AG filed Critical Metallgesellschaft AG
Publication of GB484757A publication Critical patent/GB484757A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
    • B03B1/02—Preparatory heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets

Landscapes

  • Manufacture And Refinement Of Metals (AREA)

Abstract

Low grade oolitic and conglomerate iron ores containing phosphorites are concentrated by subjecting them to an oxidation or reduction roasting and then, without slaking, to dry pneumatic concentration, so separating constituents high in iron and the phosphorites from the constituents low in iron. The roasted ore may, previously to the pneumatic concentration, be screened to remove the coarser constituents which are high in iron, and preferably also may be subjected to a winnowing operation to remove metal-free dust. Ores which are fine grained, or have been rendered so by the roasting may, prior to the pneumatic concentration, be subjected to a magnetic separation. In this case reduction roasting is used, and the material is preferably freed from dust prior to the magnetic separation. The subsequent pneumatic concentration then serves for the recovery of the still-remaining iron carriers and the phosphorities in the non-magnetic portion of the material.
GB13676/37A 1936-06-13 1937-05-14 Process for concentrating low-grade iron ores Expired GB484757A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE484757X 1936-06-13

Publications (1)

Publication Number Publication Date
GB484757A true GB484757A (en) 1938-05-10

Family

ID=6543171

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13676/37A Expired GB484757A (en) 1936-06-13 1937-05-14 Process for concentrating low-grade iron ores

Country Status (1)

Country Link
GB (1) GB484757A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102828021A (en) * 2012-09-24 2012-12-19 重庆大学 Phosphosiderite microwave coupling dephosphorization method
CN102912111A (en) * 2012-09-12 2013-02-06 北京矿冶研究总院 Treatment method of oolitic hematite containing phosphorus
WO2015006796A1 (en) * 2013-07-17 2015-01-22 Technological Resources Pty. Limited Treatment of minerals
CN104673994A (en) * 2014-04-30 2015-06-03 内蒙古科技大学 Ore dressing method for roasting magnetized weakly-magnetic iron ores under external-reducer-free conditions

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102912111A (en) * 2012-09-12 2013-02-06 北京矿冶研究总院 Treatment method of oolitic hematite containing phosphorus
CN102912111B (en) * 2012-09-12 2015-01-07 北京矿冶研究总院 Treatment method of oolitic hematite containing phosphorus
CN102828021A (en) * 2012-09-24 2012-12-19 重庆大学 Phosphosiderite microwave coupling dephosphorization method
CN102828021B (en) * 2012-09-24 2014-12-03 重庆大学 Phosphosiderite microwave coupling dephosphorization method
WO2015006796A1 (en) * 2013-07-17 2015-01-22 Technological Resources Pty. Limited Treatment of minerals
CN104673994A (en) * 2014-04-30 2015-06-03 内蒙古科技大学 Ore dressing method for roasting magnetized weakly-magnetic iron ores under external-reducer-free conditions

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