FR2259643A1 - Electrostatic sepn. of quartz and feldspar - by the corona effect with additive to increase difference in resistivities - Google Patents

Electrostatic sepn. of quartz and feldspar - by the corona effect with additive to increase difference in resistivities

Info

Publication number
FR2259643A1
FR2259643A1 FR7403230A FR7403230A FR2259643A1 FR 2259643 A1 FR2259643 A1 FR 2259643A1 FR 7403230 A FR7403230 A FR 7403230A FR 7403230 A FR7403230 A FR 7403230A FR 2259643 A1 FR2259643 A1 FR 2259643A1
Authority
FR
France
Prior art keywords
feldspar
quartz
sepn
electrostatic
resistivities
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
FR7403230A
Other languages
French (fr)
Other versions
FR2259643B1 (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.)
Valeo SE
Original Assignee
Francaise du Ferodo SA
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 Francaise du Ferodo SA filed Critical Francaise du Ferodo SA
Priority to FR7403230A priority Critical patent/FR2259643A1/en
Publication of FR2259643A1 publication Critical patent/FR2259643A1/en
Application granted granted Critical
Publication of FR2259643B1 publication Critical patent/FR2259643B1/fr
Granted 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
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C7/00—Separating solids from solids by electrostatic effect
    • B03C7/003—Pretreatment of the solids prior to electrostatic separation

Landscapes

  • Glass Compositions (AREA)

Abstract

The electrostatic sepn. of a mixt. of particles of quartz and feldspar, by the Corona effect, uses, as the voltage-active additive for increasing the difference between the superficial resistivity of quartz and that of feldspar, an oxyethylated amine of the type "Cataflot 2704" (RTM). The amine is used at the rate of 300 gr. to 1 kg. per tonne, partic. 600g. per tonne. Using "Cataflot 2704" gives much better results than those obtd. with other known voltage-active agents, even those of the same type, i.e. cationic amine-based agents, which are used in flotation processes and necessitate fluorhydric activation. The ratio of resistivities achieved is 3.5, compared with 2.5 for the best of other amines of the same kind, and 1 for other amines, used as voltage-active agents.
FR7403230A 1974-01-31 1974-01-31 Electrostatic sepn. of quartz and feldspar - by the corona effect with additive to increase difference in resistivities Granted FR2259643A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7403230A FR2259643A1 (en) 1974-01-31 1974-01-31 Electrostatic sepn. of quartz and feldspar - by the corona effect with additive to increase difference in resistivities

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7403230A FR2259643A1 (en) 1974-01-31 1974-01-31 Electrostatic sepn. of quartz and feldspar - by the corona effect with additive to increase difference in resistivities

Publications (2)

Publication Number Publication Date
FR2259643A1 true FR2259643A1 (en) 1975-08-29
FR2259643B1 FR2259643B1 (en) 1976-11-26

Family

ID=9134283

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7403230A Granted FR2259643A1 (en) 1974-01-31 1974-01-31 Electrostatic sepn. of quartz and feldspar - by the corona effect with additive to increase difference in resistivities

Country Status (1)

Country Link
FR (1) FR2259643A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101497058A (en) * 2008-01-31 2009-08-05 黄崧基 Method for separating rhombic quartz and quartz from efflorescent granite mineral

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101497058A (en) * 2008-01-31 2009-08-05 黄崧基 Method for separating rhombic quartz and quartz from efflorescent granite mineral

Also Published As

Publication number Publication date
FR2259643B1 (en) 1976-11-26

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Legal Events

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ST Notification of lapse