FR2246828A1 - Continuous vertical furnace for metal oxide mfr. - includes pre-drying chamber for raw material before entering furnace as discrete streams - Google Patents

Continuous vertical furnace for metal oxide mfr. - includes pre-drying chamber for raw material before entering furnace as discrete streams

Info

Publication number
FR2246828A1
FR2246828A1 FR7335635A FR7335635A FR2246828A1 FR 2246828 A1 FR2246828 A1 FR 2246828A1 FR 7335635 A FR7335635 A FR 7335635A FR 7335635 A FR7335635 A FR 7335635A FR 2246828 A1 FR2246828 A1 FR 2246828A1
Authority
FR
France
Prior art keywords
furnace
raw material
drying chamber
mfr
metal oxide
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
FR7335635A
Other languages
French (fr)
Other versions
FR2246828B1 (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.)
GOIKHRAKN ARON
Original Assignee
GOIKHRAKN ARON
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 GOIKHRAKN ARON filed Critical GOIKHRAKN ARON
Priority to FR7335635A priority Critical patent/FR2246828A1/en
Publication of FR2246828A1 publication Critical patent/FR2246828A1/en
Application granted granted Critical
Publication of FR2246828B1 publication Critical patent/FR2246828B1/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/08—Screw feeders; Screw dischargers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

The raw material enters the pre-drying chamber from a horizontally aligned helically bladed charging scraper through a grate in the roof of the pre-dryer. The discrete streams thus formed fall directly through the furnace which is externally heated in such a way as to produce a temp. gradient within the interior, typically rising to a max of 13 1300 degrees C near the centre and falling to 400 degrees C at the lower exit. Final cooling to aprox. room temp. takes place in a water cooled chamber beneath the furnace before removal on a screw conveyor. Useful for processing high purity Al2O3, MgO, and SiO2 for use in semiconductor mfr quantum electronics and optics technology.
FR7335635A 1973-10-05 1973-10-05 Continuous vertical furnace for metal oxide mfr. - includes pre-drying chamber for raw material before entering furnace as discrete streams Granted FR2246828A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7335635A FR2246828A1 (en) 1973-10-05 1973-10-05 Continuous vertical furnace for metal oxide mfr. - includes pre-drying chamber for raw material before entering furnace as discrete streams

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7335635A FR2246828A1 (en) 1973-10-05 1973-10-05 Continuous vertical furnace for metal oxide mfr. - includes pre-drying chamber for raw material before entering furnace as discrete streams

Publications (2)

Publication Number Publication Date
FR2246828A1 true FR2246828A1 (en) 1975-05-02
FR2246828B1 FR2246828B1 (en) 1975-11-21

Family

ID=9125974

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7335635A Granted FR2246828A1 (en) 1973-10-05 1973-10-05 Continuous vertical furnace for metal oxide mfr. - includes pre-drying chamber for raw material before entering furnace as discrete streams

Country Status (1)

Country Link
FR (1) FR2246828A1 (en)

Also Published As

Publication number Publication date
FR2246828B1 (en) 1975-11-21

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Legal Events

Date Code Title Description
ST Notification of lapse