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Vacuum Degasser (VD/VTD/VOD)

The increasing demand for high quality steel makes the vacuum treatment an essential step in secondary metallurgy process. Tenova Vacuum Degasser units (VD) feature effective removal of hydrogen, oxygen and/or carbon, based on proven technology and experience. 

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Overview

Vacuum Degasser (VD) allows to degas and decarburize the melt and provides the best conditions for desulphurization and inclusions removal. During the VD treatment, the liquid steel ladle is placed in a vacuum tank that can be of stationary or movable design according to the specific layout needs. Vacuum condition is achieved with a vacuum pump system, formed by mechanical pumps or steam ejectors. In order to promote stirring, inert gas is injected through porous plugs. VD can be equipped with an additional oxygen lance (VD-OB process) and further benefits, such as forced decarburization or chemical heating, can be obtained. Tenova's VD can be designed as a twin unit, in order to maximize productivity without sacrificing process quality, using a single vacuum pump system. 

The VOD unit is mainly used for the production of stainless steel, it provides the most suitable condition for extensive decarburization and achievement of high-purity and cleanness. The unit is basically a tank degasser equipped with an oxygen lance, but specifically configured to withstand the heat load from an intense CO emission 

It is normally used for deep decarburization of high alloy steel grades, usually to remove carbon without affecting chromium content in the production of stainless steel grades. The VOD unit can be operated as the sole decarburization unit after the furnace (DUPLEX process) or as a refining stage after rough decarburization with an AOD unit (TRIPLEX process). 

All the units can be equipped with either mechanical pumps or steam ejectors. 

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Related Solutions

RH Vacuum Degasser

Europe

Markus Dorndorf

Markus Dorndorf

Vice President Iron & Steelmaking

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Americas

Kyle Shoop

Kyle Shoop

Vice President Steelmaking, Tenova Inc.

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Türkiye and RoW

Davide Masoero

Davide Masoero

Area Manager Europe Electric Arc & Ladle Furnace

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China

Chen Jie

Chen Jie

Business Development Manager, Tenova Technologies (Tianjin)

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India

Praveen Chaturvedi

Praveen Chaturvedi

Vice President Tenova Technologies Pvt Ltd

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South East Asia

Giuseppe Zanzi

Giuseppe Zanzi

Chief Representative Officer, South East Asia and Oceania

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Tenova

Tenova is your worldwide partner for sustainable, innovative and reliable solutions in the metals and the mining industries.

From hydrometallurgy and pyrometallurgy to material handling, DRI to EAF, reheating furnaces to heat treatment furnaces, cold rolling mills to processing lines, roll grinders and texturing, our technologies minimize the environmental impact of your activities, operations, and final products.

 

Tenova S.p.A. Via Gerenzano, 58 - 21053 Castellanza - Italy

V.A.T. IT 04651530968.
REA 04651530968.
Share Capital € 18.443.700

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Tenova

Tenova is your worldwide partner for sustainable, innovative and reliable solutions in the metals and the mining industries.

From hydrometallurgy and pyrometallurgy to material handling, DRI to EAF, reheating furnaces to heat treatment furnaces, cold rolling mills to processing lines, roll grinders and texturing, our technologies minimize the environmental impact of your activities, operations, and final products.

 

Tenova S.p.A. Via Gerenzano, 58 - 21053 Castellanza - Italy

V.A.T. IT 04651530968.
REA 04651530968.
Share Capital € 18.443.700

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Choose your technologies
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