FR2308688A1 - Agglomeration of steel plant waste dusts - by hydrothermal treatment of an aged wet mixt of dust, bonding agent and silica - Google Patents

Agglomeration of steel plant waste dusts - by hydrothermal treatment of an aged wet mixt of dust, bonding agent and silica

Info

Publication number
FR2308688A1
FR2308688A1 FR7512355A FR7512355A FR2308688A1 FR 2308688 A1 FR2308688 A1 FR 2308688A1 FR 7512355 A FR7512355 A FR 7512355A FR 7512355 A FR7512355 A FR 7512355A FR 2308688 A1 FR2308688 A1 FR 2308688A1
Authority
FR
France
Prior art keywords
mixt
matl
bonding agent
dust
steel plant
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
FR7512355A
Other languages
French (fr)
Other versions
FR2308688B1 (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.)
University of Michigan
Original Assignee
University of Michigan
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 University of Michigan filed Critical University of Michigan
Priority to FR7512355A priority Critical patent/FR2308688A1/en
Publication of FR2308688A1 publication Critical patent/FR2308688A1/en
Application granted granted Critical
Publication of FR2308688B1 publication Critical patent/FR2308688B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/242—Binding; Briquetting ; Granulating with binders
    • C22B1/243—Binding; Briquetting ; Granulating with binders inorganic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Treatment Of Sludge (AREA)

Abstract

Hard agglomerates are made from steel plant waste dust contg. a hydrateable matl. of overburned lime and/or slag matl. by (a) forming a moist mixt. of the waste dust, 2-20 wt % (dry wt.) Ca and/or Mg (hydr)oxides and carbonates and 0.5-5 wt % Si matl. capable of forming a silicate bond with the bonding agent, the solids being 10 mesh size (b) ageing the mixt. to hydrate the hydrateable matl (c) forming into discrete masses (d) drying to 5 wt % moisture, and (e) hydrothermally hardening by contact with satd. steam at 100-244 degrees C. Compressive strength can be enhanced by drying after hydrothermal hardening to remove at least part of the moisture. Prod. may be used as a steel making process charge.
FR7512355A 1975-04-21 1975-04-21 Agglomeration of steel plant waste dusts - by hydrothermal treatment of an aged wet mixt of dust, bonding agent and silica Granted FR2308688A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7512355A FR2308688A1 (en) 1975-04-21 1975-04-21 Agglomeration of steel plant waste dusts - by hydrothermal treatment of an aged wet mixt of dust, bonding agent and silica

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7512355A FR2308688A1 (en) 1975-04-21 1975-04-21 Agglomeration of steel plant waste dusts - by hydrothermal treatment of an aged wet mixt of dust, bonding agent and silica

Publications (2)

Publication Number Publication Date
FR2308688A1 true FR2308688A1 (en) 1976-11-19
FR2308688B1 FR2308688B1 (en) 1980-04-25

Family

ID=9154254

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7512355A Granted FR2308688A1 (en) 1975-04-21 1975-04-21 Agglomeration of steel plant waste dusts - by hydrothermal treatment of an aged wet mixt of dust, bonding agent and silica

Country Status (1)

Country Link
FR (1) FR2308688A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003665A1 (en) * 1978-02-03 1979-08-22 Nippon Kokan Kabushiki Kaisha A method of producing cold agglomerates for use in iron making

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003665A1 (en) * 1978-02-03 1979-08-22 Nippon Kokan Kabushiki Kaisha A method of producing cold agglomerates for use in iron making

Also Published As

Publication number Publication date
FR2308688B1 (en) 1980-04-25

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Legal Events

Date Code Title Description
ST Notification of lapse