ES2166673A1 - Improvements to the Waelz process for the treatment of dusts in steel mills - Google Patents

Improvements to the Waelz process for the treatment of dusts in steel mills

Info

Publication number
ES2166673A1
ES2166673A1 ES9902069A ES9902069A ES2166673A1 ES 2166673 A1 ES2166673 A1 ES 2166673A1 ES 9902069 A ES9902069 A ES 9902069A ES 9902069 A ES9902069 A ES 9902069A ES 2166673 A1 ES2166673 A1 ES 2166673A1
Authority
ES
Spain
Prior art keywords
waelz
dusts
treatment
zno
pellets
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
ES9902069A
Other languages
Spanish (es)
Other versions
ES2166673B1 (en
Inventor
Sierra Iker Danobeitia
Gandiaga Nestor Goicoechea
Ochoa De Alda Javier Vallejo
Vergara Borja Garcia-Egocheaga
Fernandez Angel Hernandez
Montes Juliana Nancy Ayala
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.)
Cia Ind Asua Erandio S A Aser
Original Assignee
Cia Ind Asua Erandio S A Aser
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 Cia Ind Asua Erandio S A Aser filed Critical Cia Ind Asua Erandio S A Aser
Priority to ES9902069A priority Critical patent/ES2166673B1/en
Publication of ES2166673A1 publication Critical patent/ES2166673A1/en
Application granted granted Critical
Publication of ES2166673B1 publication Critical patent/ES2166673B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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

  • Treatment Of Steel In Its Molten State (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

Improvements to the Waelz process for the treatment of dusts in steel mills.It is a modification of the Waelz process, with improvement of the quality of resulting products, slag and oxide Waelz relative to the minimum contents of halogens (<0.01%), especially fluorine. Firstly, the raw material is reduced to pellets with crushed coal or coke, small additions of silica and sulphurous products if the raw material does not contain any. In the oil or pulverized coal furnace it reaches a temperature above 1200 degrees C with excess of air introduced in the part opposite the entrance of pellets, with sulphur, so as to create an atmosphere of SO2 that is able to react with the fluorides carried by the gases, forming HF that will fix on the ZnO collected. Finally, the ZnF2 and ZnCl2 fixed onto the particles of ZnO will be transformed into soluble alkaline salts by washing with a solution of sodium carbonate.
ES9902069A 1999-09-17 1999-09-17 IMPROVEMENTS IN THE WAELZ PROCESS FOR THE TREATMENT OF ACERIAS DUST. Expired - Lifetime ES2166673B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES9902069A ES2166673B1 (en) 1999-09-17 1999-09-17 IMPROVEMENTS IN THE WAELZ PROCESS FOR THE TREATMENT OF ACERIAS DUST.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES9902069A ES2166673B1 (en) 1999-09-17 1999-09-17 IMPROVEMENTS IN THE WAELZ PROCESS FOR THE TREATMENT OF ACERIAS DUST.

Publications (2)

Publication Number Publication Date
ES2166673A1 true ES2166673A1 (en) 2002-04-16
ES2166673B1 ES2166673B1 (en) 2003-10-16

Family

ID=8309968

Family Applications (1)

Application Number Title Priority Date Filing Date
ES9902069A Expired - Lifetime ES2166673B1 (en) 1999-09-17 1999-09-17 IMPROVEMENTS IN THE WAELZ PROCESS FOR THE TREATMENT OF ACERIAS DUST.

Country Status (1)

Country Link
ES (1) ES2166673B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107012336A (en) * 2017-04-01 2017-08-04 巩卫红 Rotary kiln oxygen-rich treated industrial solid castoff produces the method and device of Second-rate zinc oxide powder

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES8304212A1 (en) * 1981-07-21 1983-03-16 Ferlay Serge Zinc recovery from electric steel making furnace dust - by leaching with sodium hydroxide soln.
US4940487A (en) * 1988-04-08 1990-07-10 Voest-Alpine Stahl Donawitz Gesellschaft M.B.H. Process for utilizing of zinc-containing metallurgical dusts and sludges
EP0508166A2 (en) * 1991-04-12 1992-10-14 Zia Metallurgical Processes, Inc. Direct reduction process and apparatus
ES2038917A1 (en) * 1991-10-28 1993-08-01 Espeso Luengo Gerardo High purity zinc oxide(s) prodn. from impure oxide(s)
JPH11152511A (en) * 1997-11-20 1999-06-08 Nkk Corp Treatment of steelmaking furnace dust and dust pellet

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES8304212A1 (en) * 1981-07-21 1983-03-16 Ferlay Serge Zinc recovery from electric steel making furnace dust - by leaching with sodium hydroxide soln.
US4940487A (en) * 1988-04-08 1990-07-10 Voest-Alpine Stahl Donawitz Gesellschaft M.B.H. Process for utilizing of zinc-containing metallurgical dusts and sludges
EP0508166A2 (en) * 1991-04-12 1992-10-14 Zia Metallurgical Processes, Inc. Direct reduction process and apparatus
ES2038917A1 (en) * 1991-10-28 1993-08-01 Espeso Luengo Gerardo High purity zinc oxide(s) prodn. from impure oxide(s)
JPH11152511A (en) * 1997-11-20 1999-06-08 Nkk Corp Treatment of steelmaking furnace dust and dust pellet

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BASE DE DATOS WPI, Derwent Publications Ltd. AN 1999-389515 & JP 11152511 A (NKK CORP.) 08.06.1999 *

Also Published As

Publication number Publication date
ES2166673B1 (en) 2003-10-16

Similar Documents

Publication Publication Date Title
GB1144071A (en) Process for the removal of sulphur-containing compounds from industrial gases
US4340421A (en) Method of recovering lead from lead-acid batteries
CN104988264B (en) A kind of method for sintering fume treatment and utilizing
CN102690945A (en) Method for recycling low-grade lead and zinc in pyrite cinder
ES2166673A1 (en) Improvements to the Waelz process for the treatment of dusts in steel mills
JPS6362572B2 (en)
CN106756087B (en) A kind of method of top side melting processing scrap lead cream
GB1514363A (en) Method of processing dusty material from metallurgical waste gases
RU2282672C1 (en) Method of reduction of lead
CN113174496A (en) Method and system for supplementing manganese in zinc hydrometallurgy
CN109680151A (en) A kind of inorganic dangerous waste oxygen-enriched side-blowing treatment process
JPS56113328A (en) Improvement in desulfurization process for exhaust gas
CA1119411A (en) Process for manufacturing iron ore sinters
GB1337270A (en) Method of separating and concentrating tin from slags concent rates and the like containing tin
SU492573A1 (en) Method for oxygen-weighted cyclone-electrothermal processing of sulphide materials, for example, copper-zinc-lead concentrates
SU572084A1 (en) Method for processing dusts from copper production
SU1529738A1 (en) Charge for agglomerate producing
RU2094509C1 (en) Method for production of lead of wastes
MY101724A (en) Improved process for producing metallized pellets
GB1252871A (en)
CN1103895A (en) Method for prodn. of antimony sesquioxide powder using antimony oxide ore or antimony ore containing sulphur and oxygen
Vaish et al. Utilisation of waste battery scrap
Pickles An Improved Pyrometallurgical Method for the Recovery of Lead From Battery Residue
JP4751010B2 (en) Blast furnace operation method
RO116911B1 (en) Process for the recovery of lead from lead slag and lead-sulphate and oxide containing materials

Legal Events

Date Code Title Description
EC2A Search report published

Date of ref document: 20020416

Kind code of ref document: A1

Effective date: 20020416

FG2A Definitive protection

Ref document number: 2166673B1

Country of ref document: ES

FA2A Application withdrawn

Effective date: 20041123