FR2361149A1 - Pressurised hopper for feeding powder into a pneumatic conveyor - for the treatment of molten iron or steel - Google Patents

Pressurised hopper for feeding powder into a pneumatic conveyor - for the treatment of molten iron or steel

Info

Publication number
FR2361149A1
FR2361149A1 FR7724642A FR7724642A FR2361149A1 FR 2361149 A1 FR2361149 A1 FR 2361149A1 FR 7724642 A FR7724642 A FR 7724642A FR 7724642 A FR7724642 A FR 7724642A FR 2361149 A1 FR2361149 A1 FR 2361149A1
Authority
FR
France
Prior art keywords
powder
hopper
pneumatic conveyor
shaft
molten iron
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.)
Withdrawn
Application number
FR7724642A
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.)
Battelle Memorial Institute Inc
Original Assignee
Battelle Memorial Institute Inc
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 Battelle Memorial Institute Inc filed Critical Battelle Memorial Institute Inc
Publication of FR2361149A1 publication Critical patent/FR2361149A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying particulate material
    • B05B7/144—Arrangements for supplying particulate material the means for supplying particulate material comprising moving mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/0015—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor
    • B01J8/002—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor with a moving instrument
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/54—Large containers characterised by means facilitating filling or emptying
    • B65D88/64—Large containers characterised by means facilitating filling or emptying preventing bridge formation
    • B65D88/68—Large containers characterised by means facilitating filling or emptying preventing bridge formation using rotating devices
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Basic Packing Technique (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

Powder distributor uses a hopper located above a pneumatic conveyor tube (a). The powder is placed in the hopper, which is then sealed, and a pressurised gas drives the powder through a bottom outlet (b) in the hopper into tube (a). A vertical shaft (c), fitted with radial arms, is mounted on the axis of the hopper and rotated by a motor to prevent the powder clogging the hopper; and the bottom end of shaft (c) is provided with an eccentric rod which keeps outlet (b) from clogging. The bottom end of shaft (c) has a conical section; and the shaft can be raised or lowered to alter the width of an annular gap through which the powder flows to outlet (b), thus controlling the rate of powder flow. Used e.g. for injecting powder for sulphur removal from molten iron; or for refining steel, where the invention ensures accurate feeding of powder into the pneumatic conveyor tube (a).
FR7724642A 1976-08-12 1977-08-10 Pressurised hopper for feeding powder into a pneumatic conveyor - for the treatment of molten iron or steel Withdrawn FR2361149A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1025876A CH601076A5 (en) 1976-08-12 1976-08-12

Publications (1)

Publication Number Publication Date
FR2361149A1 true FR2361149A1 (en) 1978-03-10

Family

ID=4361219

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7724642A Withdrawn FR2361149A1 (en) 1976-08-12 1977-08-10 Pressurised hopper for feeding powder into a pneumatic conveyor - for the treatment of molten iron or steel

Country Status (5)

Country Link
BE (1) BE857705A (en)
CH (1) CH601076A5 (en)
DE (1) DE2736212A1 (en)
FR (1) FR2361149A1 (en)
NL (1) NL7708820A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451329A1 (en) * 1979-03-13 1980-10-10 Colin Michel Centrifugal extractor for silo - has shaft with chains movable vertically to sweep walls clean of material
FR2611675A1 (en) * 1987-02-27 1988-09-09 Dussau Christian Pneumatic dispenser for granular or pulverulent products of the rhythmical thrust type
BE1004913A3 (en) * 1989-08-24 1993-02-23 Amoco Corp POWDER DISPENSING APPARATUS AND RELATED METHOD.
EP0714707A1 (en) * 1994-11-30 1996-06-05 Nordson Corporation A system and method of pumping a constant volume of powder
CN105197446A (en) * 2015-09-18 2015-12-30 常州市艾森塑料科技有限公司 Automatic stirring material storage tower

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU190268B (en) * 1984-03-28 1986-08-28 Somogyi,Bela,Hu Pneumatic feeding device for delivering powder and granular materials into metal fusion
CN102285501B (en) * 2011-05-23 2013-04-17 华中科技大学 Tangential injection continuous micro-feeding device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB798784A (en) * 1954-01-19 1958-07-30 Rene Jacques Henri Planiol Arrangement for controlling the discharge of pulverulent material from a hopper
GB1027622A (en) * 1961-02-09 1966-04-27 Central Electr Generat Board Granular flow stimulating devices
GB1062902A (en) * 1964-06-04 1967-03-22 Chemical & Insulating Company Improvements in and relating to controlling the flow of powder from a hopper
US3602394A (en) * 1969-06-27 1971-08-31 Thomas F Mccune Dispenser for silage additive

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB798784A (en) * 1954-01-19 1958-07-30 Rene Jacques Henri Planiol Arrangement for controlling the discharge of pulverulent material from a hopper
GB1027622A (en) * 1961-02-09 1966-04-27 Central Electr Generat Board Granular flow stimulating devices
GB1062902A (en) * 1964-06-04 1967-03-22 Chemical & Insulating Company Improvements in and relating to controlling the flow of powder from a hopper
US3602394A (en) * 1969-06-27 1971-08-31 Thomas F Mccune Dispenser for silage additive

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451329A1 (en) * 1979-03-13 1980-10-10 Colin Michel Centrifugal extractor for silo - has shaft with chains movable vertically to sweep walls clean of material
FR2611675A1 (en) * 1987-02-27 1988-09-09 Dussau Christian Pneumatic dispenser for granular or pulverulent products of the rhythmical thrust type
BE1004913A3 (en) * 1989-08-24 1993-02-23 Amoco Corp POWDER DISPENSING APPARATUS AND RELATED METHOD.
EP0714707A1 (en) * 1994-11-30 1996-06-05 Nordson Corporation A system and method of pumping a constant volume of powder
US5752788A (en) * 1994-11-30 1998-05-19 Nordson Corporation System and method of pumping a constant volume of powder
CN105197446A (en) * 2015-09-18 2015-12-30 常州市艾森塑料科技有限公司 Automatic stirring material storage tower

Also Published As

Publication number Publication date
NL7708820A (en) 1978-02-14
DE2736212A1 (en) 1978-02-16
BE857705A (en) 1978-02-13
CH601076A5 (en) 1978-06-30

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Legal Events

Date Code Title Description
ST Notification of lapse