ES8500343A3 - Procedure to recover the content in fluorides of carbonaceous materials. (Machine-translation by Google Translate, not legally binding) - Google Patents

Procedure to recover the content in fluorides of carbonaceous materials. (Machine-translation by Google Translate, not legally binding)

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Publication number
ES8500343A3
ES8500343A3 ES523384A ES523384A ES8500343A3 ES 8500343 A3 ES8500343 A3 ES 8500343A3 ES 523384 A ES523384 A ES 523384A ES 523384 A ES523384 A ES 523384A ES 8500343 A3 ES8500343 A3 ES 8500343A3
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Spain
Prior art keywords
waste
fluorides
recover
translation
procedure
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
ES523384A
Other languages
Spanish (es)
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ES523384A0 (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.)
Martin Marietta Corp
Original Assignee
Martin Marietta Corp
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 Martin Marietta Corp filed Critical Martin Marietta Corp
Priority to ES523384A priority Critical patent/ES8500343A3/en
Publication of ES523384A0 publication Critical patent/ES523384A0/en
Publication of ES8500343A3 publication Critical patent/ES8500343A3/en
Expired legal-status Critical Current

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Abstract

Carbon cathode waste material contg. Na3AlF6, AlF3, CaF2, NaF is heated (600-1200 deg.C) in the presence of water, oxygen and SO2 to generate HF. The waste is preferably 1-5 mm particles and the heating may take place in a fluidised bed reactor, packed bed reactor or closed furnace reactor and the SO2 may be produced in situ by adding S to the heated waste. The generated HF may be reacted with agents to form AlF3 or cryolite. - Recovering fluoride values from waste cathodes and linings of Al electrolytic cells. EPAB- EP--78304 B A process for the recovery of fluoride values from carbonaceous cell linings and/or cathodes, which process comprises liberating the fluorine as gaseous hydrogen fluoride by heating the carbon-aceous materials in the presence of oxygen, water, and sulphur dioxide. (9pp)
ES523384A 1983-06-17 1983-06-17 Procedure to recover the content in fluorides of carbonaceous materials. (Machine-translation by Google Translate, not legally binding) Expired ES8500343A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES523384A ES8500343A3 (en) 1983-06-17 1983-06-17 Procedure to recover the content in fluorides of carbonaceous materials. (Machine-translation by Google Translate, not legally binding)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES523384A ES8500343A3 (en) 1983-06-17 1983-06-17 Procedure to recover the content in fluorides of carbonaceous materials. (Machine-translation by Google Translate, not legally binding)

Publications (2)

Publication Number Publication Date
ES523384A0 ES523384A0 (en) 1984-10-01
ES8500343A3 true ES8500343A3 (en) 1984-10-01

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ID=8485885

Family Applications (1)

Application Number Title Priority Date Filing Date
ES523384A Expired ES8500343A3 (en) 1983-06-17 1983-06-17 Procedure to recover the content in fluorides of carbonaceous materials. (Machine-translation by Google Translate, not legally binding)

Country Status (1)

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ES (1) ES8500343A3 (en)

Also Published As

Publication number Publication date
ES523384A0 (en) 1984-10-01

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FD1A Patent lapsed

Effective date: 19970303