GB878679A - Improvements in or relating to the production of black oxide or iron - Google Patents

Improvements in or relating to the production of black oxide or iron

Info

Publication number
GB878679A
GB878679A GB11090/58A GB1109058A GB878679A GB 878679 A GB878679 A GB 878679A GB 11090/58 A GB11090/58 A GB 11090/58A GB 1109058 A GB1109058 A GB 1109058A GB 878679 A GB878679 A GB 878679A
Authority
GB
United Kingdom
Prior art keywords
converter dust
dust
converter
employed
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
GB11090/58A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB878679A publication Critical patent/GB878679A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00Compounds of iron
    • C01G49/02Oxides; Hydroxides
    • C01G49/08Ferroso-ferric oxide [Fe3O4]
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/60Optical properties, e.g. expressed in CIELAB-values

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Processing Of Solid Wastes (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

Pigmentary ferrosoferric oxide is prepared by heating converter dust, obtained by refining iron with oxygen bearing gases, with solid or gaseous carbonaceous reducing agents or hydrogen containing gases, the converter dust employed having a size predominantly below 5 microns. The reduction is preferably effected at 500-800 DEG C. and air is preferably excluded. The product has the same particle size analysis as the original converter dust and any slight agglomeration may be broken up by passage through a pin mill. The converter dust employed may be the dust removed from the exhaust gases of converters or the sludge obtained in wet separating processes after drying and disintegrating. Suitable reducing agents, which are preferably employed in stoichiometric excess, are finely ground coal, charcoal, coke or soot, normally employed in amounts of 1-6% by weight of converter dust; fuel oils, mineral oils and fatty oils, waste sulphite liquor and molasses may be similarly employed. Gaseous reducing agents may be hydrogen, carbon monoxide or gas mixtures containing them in which case the converter dust may be entrained in the gases. As a modification the hot exhaust gases from the iron converter, containing the converter dust in suspension may be subjected directly to partial reduction so that the ferrosoferric oxide formed is subsequently precipitated from the exhaust gases. Once reduction is complete the iron oxide should be quenched to below 300 DEG C. preferably with a liquid such as water. The converter dust or the ferrosoferric oxide obtained therefrom may be treated with dilute hydrochloric acid to remove impurities. According to an example converter dust was mixed with 5% of coal dust, crushed and fed to a rotary kiln heated to 650 DEG C.; the material leaving the kiln was cooled to about 100 DEG C. and broken up in a pin mill. Further examples relate to the reduction of converter dust with spindle oil and carbon monoxide respectively.
GB11090/58A 1957-04-11 1958-04-08 Improvements in or relating to the production of black oxide or iron Expired GB878679A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT878679X 1957-04-11

Publications (1)

Publication Number Publication Date
GB878679A true GB878679A (en) 1961-10-04

Family

ID=3682636

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11090/58A Expired GB878679A (en) 1957-04-11 1958-04-08 Improvements in or relating to the production of black oxide or iron

Country Status (1)

Country Link
GB (1) GB878679A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1508007B1 (en) * 1965-06-23 1972-07-06 Ct Sperimentale Metallurg S P Process for the production of iron powder for powder metallurgical purposes
DE102019207824A1 (en) * 2019-05-28 2020-12-03 Thyssenkrupp Steel Europe Ag Process for the production of iron powder
RU2792956C1 (en) * 2022-07-28 2023-03-28 Федеральное государственное бюджетное образовательное учреждение высшего образования "Ярославский государственный технический университет" ФГБОУВО "ЯГТУ" Method for obtaining an adsorbent for purification of washing wastewater from hexavalent chromium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1508007B1 (en) * 1965-06-23 1972-07-06 Ct Sperimentale Metallurg S P Process for the production of iron powder for powder metallurgical purposes
DE102019207824A1 (en) * 2019-05-28 2020-12-03 Thyssenkrupp Steel Europe Ag Process for the production of iron powder
RU2792956C1 (en) * 2022-07-28 2023-03-28 Федеральное государственное бюджетное образовательное учреждение высшего образования "Ярославский государственный технический университет" ФГБОУВО "ЯГТУ" Method for obtaining an adsorbent for purification of washing wastewater from hexavalent chromium

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