State of the art for prolonging blast furnace campaigns

Kowalski, W. P.; Lüngen, Hans Bodo; Stricker, K. P.

doi:10.1051/metal/200097040493

Cited by 6 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The attempt for protection of blast furnace hearths by charging lump Ilmenite with the burden is the common practice for a number of decades. [2][3][4] However the results are often disputable. This purpose of the addition of Titanium compounds is based on the generation of high-temperature-and high-wear-resistant Ti(C,N) compounds, which exhibit temperature-dependent solubility in the hot metal.…”

Section: Comparison Of Different Methods To Use Titanium Containing M...mentioning

confidence: 99%

O Prolongado Teste De Co-Injecao De Sintetico Tio2 Com Premisturado E Ulverizado Carvao Para Preventivo Proteçao De Cardinho Dos Altos Fornos De Rogesa /Dillinger Hütte Em Dillingen, Alemanha

Hartig,

Amirzadeh-Asl,

Fünders

2009

ABM Proceedings

View full text Add to dashboard Cite

At ROGESA blast furnaces a mixture of pulverized coal and synthetic titanium dioxide is injected simultaneously in order to protect the hearth from premature erosion. Sachtleben has developed, in the form of RUTILIT, a fine-particle synthetic source of titanium dioxide which can be systematically injected into the zone of damage in the blast furnace hearth via the tuyeres. Thanks to its great particle fineness, RUTILIT has good rheological (flow) properties, permitting pneumatic conveyance. At The ROGESA-Ironmaking Plant a new technology has been developed in order to use the grinding and injection facilities not only for pulverized coal but also for titanium products. This achieves a quick and cost-effective repair of the damage of the hearth refractory, and thus a reduction of temperature in the hearth area. This paper is a common report from AG der Dillinger Hüttenwerke (Rogesa) and Sachtleben Chemie GmbH, Duisburg. It examines the benefits of a long term coinjection of pulverized coal and synthetic Titanium dioxide (RUTILIT) at Blast Furnace No. 4 and No. 5.

show abstract

Section: Comparison Of Different Methods To Use Titanium Containing M...mentioning

confidence: 99%

O Prolongado Teste De Co-Injecao De Sintetico Tio2 Com Premisturado E Ulverizado Carvao Para Preventivo Proteçao De Cardinho Dos Altos Fornos De Rogesa /Dillinger Hütte Em Dillingen, Alemanha

Hartig,

Amirzadeh-Asl,

Fünders

2009

ABM Proceedings

View full text Add to dashboard Cite

show abstract

“…According to the documents [7,8], the shape of designed deadman is described as a paraboloid. Due to the ratio of the depth (the distance from the taphole to the hearth bottom) and the diameter of hearth larger than 0.2 [9], the situations of the designed deadman are all floating. The other physical properties of the refractory refer to the previous publication [6].…”

Section: Physical Systemmentioning

confidence: 98%

Numerical prediction on the erosion in the hearth of a blast furnace during tapping process

Chang

Cheng

Huang

et al. 2009

International Communications in Heat and Mass Transfer

View full text Add to dashboard Cite

“…Sources of TiO 2 are fed into the BF via the furnace top with the burden either in the form of lump Ilmenite. [5,6] Distribution and movement thus takes place throughout the entire BF shaft, with consequences which include delayed times of action, high necessary input quantities, impairment of slag quality and occasional depositions in the shaft.…”

Section: Use Of Tio 2 Sources For Blast Furnace Maintenancementioning

confidence: 99%

Use of Synthetic Titanium Products for Protection of the Hearth of Rogesa Blast Furnaces

Hartig,

Amirzadeh-Asl,

Fünders

2007

ABM Proceedings

View full text Add to dashboard Cite

The company Roheisengesellschaft Saar (ROGESA) is a joint venture of the AG of Dillinger Huettenwerke, the major European heavy plate producer, and Saarstahl AG, one of the most important manufacturer of long products in the world. In order to cope with increasing demand of the hot metal from both steel shops on one hand, and simultaneously increasing pressure on hot metal cost reduction, on the other hand, ROGESA had decided to enlarge No. 5 blast furnace during the relining in 1997. Its inner volume was increased to 3,067 m³ and its hearth diameter up to 12 m. Due to the geometric change, the hearth lining and the cooling system had to be newly designed. After around 8 years in operation, serious wear was detected in the hearth lining and a part of the shaft cooling. Consequently, an interim repair was necessary and carried out in the period of Dec 05/Jan 06. This paper describes the wear conditions of No. 5 blast furnace after its enlargement with focus on experiences by applying adequate measures against short-term temperature increase, especially use of titanium bearing materials. The here presented paper is a common report from Rogesa, Sachtleben Chemie GmbH (Duisburg) and the GSR (Moers).

show abstract

State of the art for prolonging blast furnace campaigns

Cited by 6 publications

References 0 publications

O Prolongado Teste De Co-Injecao De Sintetico Tio2 Com Premisturado E Ulverizado Carvao Para Preventivo Proteçao De Cardinho Dos Altos Fornos De Rogesa /Dillinger Hütte Em Dillingen, Alemanha

O Prolongado Teste De Co-Injecao De Sintetico Tio2 Com Premisturado E Ulverizado Carvao Para Preventivo Proteçao De Cardinho Dos Altos Fornos De Rogesa /Dillinger Hütte Em Dillingen, Alemanha

Numerical prediction on the erosion in the hearth of a blast furnace during tapping process

Use of Synthetic Titanium Products for Protection of the Hearth of Rogesa Blast Furnaces

Contact Info

Product

Resources

About