FR2125566A1 - Ferrosilicon particles - rounded off by superficial melting in electric arc or plasma jet - Google Patents

Ferrosilicon particles - rounded off by superficial melting in electric arc or plasma jet

Info

Publication number
FR2125566A1
FR2125566A1 FR7205400A FR7205400A FR2125566A1 FR 2125566 A1 FR2125566 A1 FR 2125566A1 FR 7205400 A FR7205400 A FR 7205400A FR 7205400 A FR7205400 A FR 7205400A FR 2125566 A1 FR2125566 A1 FR 2125566A1
Authority
FR
France
Prior art keywords
particles
rounded
electric arc
plasma jet
ferrosilicon
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
FR7205400A
Other languages
French (fr)
Other versions
FR2125566B1 (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.)
Knapsack AG
Original Assignee
Knapsack 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 Knapsack AG filed Critical Knapsack AG
Publication of FR2125566A1 publication Critical patent/FR2125566A1/en
Application granted granted Critical
Publication of FR2125566B1 publication Critical patent/FR2125566B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/06—Metallic powder characterised by the shape of the particles
    • B22F1/065—Spherical particles

Abstract

Prodn. of compact, smooth, corrosion-resistant ferrosilicon particles for use as a weighing suspension in the float-sink processing of ores is improved in that irregularly shaped ferrosilicon particles are passed in an inert gas stream through an electric arc or plasma jet, whereby the particles are melted at least superficially and rounded off. Subsequently the particles are passed through a cooling zone, and then collected in, e.g., a cyclone. The inert carrier gas is pref. H2, He, Ar, N2 or their mixts.
FR7205400A 1971-02-19 1972-02-17 Ferrosilicon particles - rounded off by superficial melting in electric arc or plasma jet Granted FR2125566A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2107946A DE2107946B2 (en) 1971-02-19 1971-02-19 Process for making smooth and rounded ferro-silicon particles

Publications (2)

Publication Number Publication Date
FR2125566A1 true FR2125566A1 (en) 1972-09-29
FR2125566B1 FR2125566B1 (en) 1977-01-14

Family

ID=5799230

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7205400A Granted FR2125566A1 (en) 1971-02-19 1972-02-17 Ferrosilicon particles - rounded off by superficial melting in electric arc or plasma jet

Country Status (6)

Country Link
CA (1) CA953508A (en)
DE (1) DE2107946B2 (en)
FR (1) FR2125566A1 (en)
IT (1) IT948622B (en)
NO (1) NO138275C (en)
ZA (1) ZA72850B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4762975A (en) * 1984-02-06 1988-08-09 Phrasor Scientific, Incorporated Method and apparatus for making submicrom powders
RU2741879C1 (en) * 2020-06-26 2021-01-29 Игорь Николаевич Чернега Method of obtaining disperse powder of ferrosilicon weighting agent

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3015852A (en) * 1957-04-04 1962-01-09 South African Iron & Steel Process of spheroidizing irregularly shaped particles
US3272615A (en) * 1962-08-01 1966-09-13 South African Iron & Steel Production of spheroidized particles

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3015852A (en) * 1957-04-04 1962-01-09 South African Iron & Steel Process of spheroidizing irregularly shaped particles
US3272615A (en) * 1962-08-01 1966-09-13 South African Iron & Steel Production of spheroidized particles

Also Published As

Publication number Publication date
DE2107946B2 (en) 1979-04-12
NO138275B (en) 1978-05-02
FR2125566B1 (en) 1977-01-14
NO138275C (en) 1978-08-09
CA953508A (en) 1974-08-27
ZA72850B (en) 1973-03-28
DE2107946A1 (en) 1972-09-07
IT948622B (en) 1973-06-11

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse