EP 3456849 A1 20190320 - TUYERE FOR BOTTOM AND SIDE BLOWING AND METHOD FOR COOLING THE SAME
Title (en)
TUYERE FOR BOTTOM AND SIDE BLOWING AND METHOD FOR COOLING THE SAME
Title (de)
DÜSE ZUM SEITEN- UND BODENBLASEN SOWIE VERFAHREN ZUR KÜHLUNG DER DÜSE
Title (fr)
TUYÈRE DE VENT CHAUD POUR INJECTION LATERALE ET INFÉRIEURE ET PROCÉDÉ POUR SON REFROIDISSEMENT
Publication
Application
Priority
RU 2017132288 A 20170915
Abstract (en)
The group of inventions relates to metallurgy, and more particularly to devices for blowing oxidizing blast through molten copper sulfide or polymetallic raw material and methods for cooling these devices, and can be used in nonferrous and ferrous metallurgy. The group of inventions offers higher performance characteristics of a tuyere for bottom and side blowing, including, inter alia, enhanced reliability and longer service of the tuyere, improved efficiency of cooling the tuyere under high heat strains. A tuyere for bottom and side blowing comprises a tuyere body having a passage, a main blast pipe, a protective blast pipe, a tuyere nose, a cooled element and a ceramometal headpiece. The main blast pipe and the protective blast pipe are arranged coaxially with respect to each other. The ceramometal headpiece is disposed on the tuyere nose and is made of a material having an average thermal conductivity of at least 30 W/m°C and a phase transition latent heat of at least 1000 kJ/kg. Method for cooling a tuyere comprises cooling the tuyere nose at a coolant flow rate of at least 25·10 -3 m 3 /s per 1 m 2 of the surface area of the nose, and maintaining negative pressure within the cooled elements.
IPC 8 full level
C21B 7/16 (2006.01)
CPC (source: EA EP RU)
C21B 7/16 (2013.01 - EA RU); C21B 7/163 (2013.01 - EP); F27D 1/12 (2013.01 - EA RU)
Citation (applicant)
- SU 1667920 A1 19910807 - PROIZV OB TEKHENERGOKHIMPROM N [SU]
- RU 2152441 C1 20000710 - SKIJ KOM, et al
- RU 2235789 C2 20040910
- RU 2299243 C1 20070520 - OOO NPP TSVETLITFURMA OOO NPP [RU]
- US 5989488 A 19991123 - HORI RYUICHI [JP]
Citation (search report)
- [IA] DE 102009048351 A1 20100602 - SIEMENS AG [DE], et al
- [IA] FR 2549489 A1 19850125 - SACILOR [FR]
- [IA] GB 518921 A 19400312 - FREYN ENGINEERING CO
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3456849 A1 20190320; EP 3456849 B1 20200617; EP 3456849 B8 20200812; AU 2018204745 A1 20190404; CL 2018002526 A1 20190201; EA 038247 B1 20210729; EA 201891232 A1 20190329; RU 2676382 C1 20181228
DOCDB simple family (application)
EP 18182891 A 20180711; AU 2018204745 A 20180629; CL 2018002526 A 20180904; EA 201891232 A 20180621; RU 2017132288 A 20170915