FR2079746A5 - Phosphorus production - by a continuous process in rotary furnace with plasma arc, heating - Google Patents

Phosphorus production - by a continuous process in rotary furnace with plasma arc, heating

Info

Publication number
FR2079746A5
FR2079746A5 FR7004839A FR7004839A FR2079746A5 FR 2079746 A5 FR2079746 A5 FR 2079746A5 FR 7004839 A FR7004839 A FR 7004839A FR 7004839 A FR7004839 A FR 7004839A FR 2079746 A5 FR2079746 A5 FR 2079746A5
Authority
FR
France
Prior art keywords
rotary furnace
plasma arc
heating
continuous process
tri
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
FR7004839A
Other languages
French (fr)
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.)
Heurtey SA
Original Assignee
Heurtey 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 Heurtey SA filed Critical Heurtey SA
Priority to FR7004839A priority Critical patent/FR2079746A5/en
Application granted granted Critical
Publication of FR2079746A5 publication Critical patent/FR2079746A5/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/02—Preparation of phosphorus
    • C01B25/027—Preparation of phosphorus of yellow phosphorus

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Silicon Compounds (AREA)

Abstract

A pulverized mixture of tri-calcium phosphate, silica and coke is injected into an axially heated rotary furnace, the heat being provided by plasma arc torches to give a temp. of some 4500 degrees C, liquid calcium silicate is eliminated as it is formed and phosphorus is isolated as a vapour for condensation. Previous methods have involved a preliminary agglomeration stage for the tri-calcium phosphate, and have produced limited outputs at low efficiency and about 2000 degrees C. An inert gas such as nitrogen or argon is suitable for powder injection as well as for the plasma arcs.
FR7004839A 1970-02-11 1970-02-11 Phosphorus production - by a continuous process in rotary furnace with plasma arc, heating Expired FR2079746A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7004839A FR2079746A5 (en) 1970-02-11 1970-02-11 Phosphorus production - by a continuous process in rotary furnace with plasma arc, heating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7004839A FR2079746A5 (en) 1970-02-11 1970-02-11 Phosphorus production - by a continuous process in rotary furnace with plasma arc, heating

Publications (1)

Publication Number Publication Date
FR2079746A5 true FR2079746A5 (en) 1971-11-12

Family

ID=9050459

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7004839A Expired FR2079746A5 (en) 1970-02-11 1970-02-11 Phosphorus production - by a continuous process in rotary furnace with plasma arc, heating

Country Status (1)

Country Link
FR (1) FR2079746A5 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010241A (en) * 1974-08-27 1977-03-01 Alfred Lvovich Mosse Process for the production of hydrogen fluoride, phosphoric anhydride, calcium polyphosphates and nitric acid
US4806325A (en) * 1988-07-14 1989-02-21 Fmc Corporation Process for recovering elemental phosphorus and a metal concentrate from ferrophos

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010241A (en) * 1974-08-27 1977-03-01 Alfred Lvovich Mosse Process for the production of hydrogen fluoride, phosphoric anhydride, calcium polyphosphates and nitric acid
US4806325A (en) * 1988-07-14 1989-02-21 Fmc Corporation Process for recovering elemental phosphorus and a metal concentrate from ferrophos
EP0350542A1 (en) * 1988-07-14 1990-01-17 FMC Corporation Process for recovering elemental phosphorus and a metal concentrate from ferrophos

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Legal Events

Date Code Title Description
ST Notification of lapse