GB456252A - Process for purifying finely divided carbon black which has been formed on iron-containing contacts by decomposition of carbon monoxide - Google Patents

Process for purifying finely divided carbon black which has been formed on iron-containing contacts by decomposition of carbon monoxide

Info

Publication number
GB456252A
GB456252A GB6080/36A GB608036A GB456252A GB 456252 A GB456252 A GB 456252A GB 6080/36 A GB6080/36 A GB 6080/36A GB 608036 A GB608036 A GB 608036A GB 456252 A GB456252 A GB 456252A
Authority
GB
United Kingdom
Prior art keywords
chlorine
iron
carbon black
decomposition
stream
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
GB6080/36A
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.)
BAYERISCHE STICKSTOFF WERKE AG
Original Assignee
BAYERISCHE STICKSTOFF WERKE 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 BAYERISCHE STICKSTOFF WERKE AG filed Critical BAYERISCHE STICKSTOFF WERKE AG
Publication of GB456252A publication Critical patent/GB456252A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/44—Carbon
    • C09C1/48—Carbon black
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/44—Carbon
    • C09C1/48—Carbon black
    • C09C1/56—Treatment of carbon black ; Purification

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

Carbon black obtained by the decomposition of carbon monoxide using iron-containing catalysts is freed from iron, particularly in the form of iron carbide, by treatment with chlorine, hydrogen chloride or mixtures thereof, which may be moist, at temperatures between 400 and 1250 DEG C. The process may be carried out in a crucible furnace or in a rotary tube furnace, the temperature preferably being increased towards the end of the reaction to remove the chlorides formed, together with intermittent or complete stoppage of the chlorine stream. The reaction products may also be removed by a stream of inert gas or in vacuo. Preferably however, the carbon black is scattered through a uniformly heated stream of chlorine &c., removing in countercurrent and final removal of chloride and adsorped chlorine is obtained by spraying through an inert gas atmosphere, e.g. hydrogen or nitrogen, with the addition of steam if required. The unused chlorine &c., may be recycled. The impurities (up to 6 per cent) may be reduced to about 0,1 per cent, and the product is suitable for use in the printing ink, lacquer or rubber industries.
GB6080/36A 1935-02-28 1936-02-28 Process for purifying finely divided carbon black which has been formed on iron-containing contacts by decomposition of carbon monoxide Expired GB456252A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE802371X 1935-02-28

Publications (1)

Publication Number Publication Date
GB456252A true GB456252A (en) 1936-11-05

Family

ID=6718583

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6080/36A Expired GB456252A (en) 1935-02-28 1936-02-28 Process for purifying finely divided carbon black which has been formed on iron-containing contacts by decomposition of carbon monoxide

Country Status (3)

Country Link
AT (1) AT149661B (en)
FR (1) FR802371A (en)
GB (1) GB456252A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2495925A (en) * 1944-09-28 1950-01-31 Columbian Carbon Process of producing carbon black products
EP0010218A1 (en) * 1978-10-25 1980-04-30 Hoechst Aktiengesellschaft Apparatus for increasing the graphite content of carbon blacks and the use of these carbon blacks

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2494290A1 (en) * 1980-11-20 1982-05-21 Tosco Corp Purificn. of zinc-contaminated carbon black - by pelletising and chlorinating pellets

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2495925A (en) * 1944-09-28 1950-01-31 Columbian Carbon Process of producing carbon black products
EP0010218A1 (en) * 1978-10-25 1980-04-30 Hoechst Aktiengesellschaft Apparatus for increasing the graphite content of carbon blacks and the use of these carbon blacks

Also Published As

Publication number Publication date
AT149661B (en) 1937-05-25
FR802371A (en) 1936-09-03

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