FR2267845A2 - Recovery of foundry sand, e.g. shell moulding sand - using fluidised bed for complete combustion or organic matter - Google Patents

Recovery of foundry sand, e.g. shell moulding sand - using fluidised bed for complete combustion or organic matter

Info

Publication number
FR2267845A2
FR2267845A2 FR7428564A FR7428564A FR2267845A2 FR 2267845 A2 FR2267845 A2 FR 2267845A2 FR 7428564 A FR7428564 A FR 7428564A FR 7428564 A FR7428564 A FR 7428564A FR 2267845 A2 FR2267845 A2 FR 2267845A2
Authority
FR
France
Prior art keywords
sand
fluidised bed
recovery
organic matter
vibratory conveyor
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
FR7428564A
Other languages
French (fr)
Other versions
FR2267845B2 (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.)
Carl Schenck AG
Original Assignee
Carl Schenck 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
Priority claimed from DE19742419186 external-priority patent/DE2419186C2/en
Application filed by Carl Schenck AG filed Critical Carl Schenck AG
Publication of FR2267845A2 publication Critical patent/FR2267845A2/en
Application granted granted Critical
Publication of FR2267845B2 publication Critical patent/FR2267845B2/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
    • B22C5/08—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sprinkling, cooling, or drying

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

The parent patent described a process for the recovery of moulding sand covered with combustible foreign substances, e.g. shell moulding sand, by heating, where the heating was carried out on one or more vibratory conveyor chutes arranged in a row. In the present invention, after treatment in the vibratory conveyor, the hot sand is processed in a fluidised bed. The air used in the fluidised bed is pref. preheated by the heat arising from the recovery process. In the pref. plant, the vibratory conveyor chute(s) is/are followed by at least one fluidised bed fitted with transverse baffles and bodies made of a thermal insulant the dia and / or density of which is greater than that of the sand. The amt. of sand flowing through the plant can be increased and the operating temp. lowered, thus reducing the processing costs.
FR7428564A 1974-04-20 1974-08-20 Recovery of foundry sand, e.g. shell moulding sand - using fluidised bed for complete combustion or organic matter Granted FR2267845A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742419186 DE2419186C2 (en) 1974-04-20 Method and device for regenerating molding sand contaminated with combustible foreign matter

Publications (2)

Publication Number Publication Date
FR2267845A2 true FR2267845A2 (en) 1975-11-14
FR2267845B2 FR2267845B2 (en) 1977-03-25

Family

ID=5913483

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7428564A Granted FR2267845A2 (en) 1974-04-20 1974-08-20 Recovery of foundry sand, e.g. shell moulding sand - using fluidised bed for complete combustion or organic matter

Country Status (3)

Country Link
BE (1) BE828104R (en)
CH (1) CH579956A5 (en)
FR (1) FR2267845A2 (en)

Also Published As

Publication number Publication date
FR2267845B2 (en) 1977-03-25
DE2419186A1 (en) 1975-09-11
CH579956A5 (en) 1976-09-30
BE828104R (en) 1975-10-20
DE2419186B1 (en) 1975-09-11

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