GB1067312A - Improvements in or relating to methods of preparing pressure and temperature resisting bodies - Google Patents

Improvements in or relating to methods of preparing pressure and temperature resisting bodies

Info

Publication number
GB1067312A
GB1067312A GB3199764A GB3199764A GB1067312A GB 1067312 A GB1067312 A GB 1067312A GB 3199764 A GB3199764 A GB 3199764A GB 3199764 A GB3199764 A GB 3199764A GB 1067312 A GB1067312 A GB 1067312A
Authority
GB
United Kingdom
Prior art keywords
pressure
heating chamber
oxygen
screen
containing gases
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
GB3199764A
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.)
STRABA HANDELS AG
Original Assignee
STRABA HANDELS 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
Application filed by STRABA HANDELS AG filed Critical STRABA HANDELS AG
Publication of GB1067312A publication Critical patent/GB1067312A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
    • C04B35/528—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components
    • C04B35/532—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components containing a carbonisable binder
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Products (AREA)
  • Working-Up Tar And Pitch (AREA)
  • Tents Or Canopies (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

In making a solid pressure- and temperature-resisting formed body of large dimensions in which particles of ore or of carbonaceous material, for example graphite, petrol coke or tar pitch coke, are bound by a bituminous binder which has been transformed into an infusible and insoluble state whilst retaining its binding properties, the particles and bituminous binder are mixed so that each solid particle is individually coated with a thin film of binder having a thickness preferably of about 1 micron, the resulting mixture is compacted by pressure so that the formed body contains a system of voids comprising 5 to 25% of the volume of the body and representing an intercommunicating capillary network distributed homogeneously throughout the body, and the body is exposed in a heating chamber at a temperature of from 150 DEG to 300 DEG C. to oxygen-containing gases, the gases being admitted and carried by a controlled flow throughout the network of the voids in the body until the transformation reaction, which proceeds in a zone in accordance with the gas flow, is completed. The transformation reaction, which preferably takes place at a temperature of from 190 DEG to 220 DEG C., may comprise a process in which: (a) a tube is fitted into the centre of the body and is connected with either a suction system or a pressure system, a continuous controlled flow of oxygen-containing gases being carried by the tube either from the heating chamber through the body by suction or through the body to the heating chamber by pressure; or (b) the lateral surfaces of the body are coated with a gastight material, the body is placed in the heating chamber on a screen which is coated with a gastight material on those portions which protrude over the cross-section of the body and to the lower surface of which is connected either a suction system or a pressure system, and a continuous controlled flow of oxygen-containing gases is carried either by suction from the heating chamber downwardly through the body to the screen or by pressure from the screen upwardly through the body to the heating chamber; or (c) the body is placed on a screen in a pressure-resistant heating chamber into which oxygen-containing gases are passed to increase the pressure therein to about 3 atmospheres, this pressure is maintained preferably for about 15 minutes, the heating chamber is depressurized to atmospheric pressure, and the cyclic process is repeated at least once; or (d) the body is placed on a screen in a pressure-resistant heating chamber which is evacuated, oxygen-containing gases are admitted into the chamber and maintained therein preferably for about 15 minutes, and the cyclic process is repeated at least once; or (e) the pressurization treatment defined by process (c) and the evacuation treatment defined by process (d) are applied alternately. At the end of the transformation reaction, hot inert gases may be passed into the body to cool and to adjust the electrical conductivity of the finished body which may be used, when formed from petrol coke and bitumen, as a block anode for aluminium electrolysis.
GB3199764A 1963-08-06 1964-08-06 Improvements in or relating to methods of preparing pressure and temperature resisting bodies Expired GB1067312A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH972863A CH429675A (en) 1963-08-06 1963-08-06 Process for the production and hardening of bituminous molded bodies, in particular made of coal, ore, graphite and petroleum coke

Publications (1)

Publication Number Publication Date
GB1067312A true GB1067312A (en) 1967-05-03

Family

ID=4355024

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3199764A Expired GB1067312A (en) 1963-08-06 1964-08-06 Improvements in or relating to methods of preparing pressure and temperature resisting bodies

Country Status (7)

Country Link
AT (1) AT270253B (en)
CH (1) CH429675A (en)
DE (1) DE1258326C2 (en)
GB (1) GB1067312A (en)
IS (1) IS657B6 (en)
NL (1) NL6408991A (en)
NO (1) NO115773B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010010957A1 (en) * 2010-03-10 2011-09-15 H.C. Carbon Gmbh Building material with heat-insulating property

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1005889B (en) * 1955-03-07 1957-04-04 Siemens Planiawerke A G Fuer K Combustion process for carbon and graphite moldings
US2883708A (en) * 1955-03-09 1959-04-28 Elektrokemisk As Manufacture of carbon blocks for use as electrodes
CH389248A (en) * 1961-04-11 1965-03-15 Albert Dr Sommer Process for the production of carbon electrodes for metallurgical purposes

Also Published As

Publication number Publication date
IS1403A7 (en) 1964-08-04
CH429675A (en) 1967-02-15
DE1258326B (en) 1968-01-04
AT270253B (en) 1969-04-25
IS657B6 (en) 1968-05-04
NL6408991A (en) 1965-02-08
NO115773B (en) 1968-11-25
DE1258326C2 (en) 1973-08-23

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