Danieli Corus Successfully Hot Commissions First Sublance System for JSW Steel
02/05/2013 - On 4 February 2013, Danieli Corus and JSW Steel successfully started the operation of the first sublance in India, proving the feasibility of sublance-based BOF process control in the Indian steel industry, where exceptional slag compositions found in BOF shops were previously thought to be prohibitive.
On 4 February 2013, Danieli Corus and JSW Steel successfully started the operation of the first sublance in India. This proves the feasibility of sublance-based BOF process control in the Indian steel industry, where exceptional slag compositions found in BOF shops were previously thought to be prohibitive.
Danieli Corus was awarded the order to install sublance-based BOF process control systems for all converters of both SMS-1 and SMS-2 operated by JSW Steel at its Toranagallu plant. In total, seven sublances will be installed and commissioned, of which this is the first. To overcome serious space limitations, Danieli Corus introduced a unique design for JSW. This newly designed system is based on a new method of bringing the sublance into measurement position. Instead of the classic slewing or side shifting of the sublance, a diagonal movement of the entire sublance guide is applied for positioning. This compact system operates with an extremely short cycle time of less than 90 seconds.
In steel plant SMS-1, converter B is now equipped with an operational sublance. Shortly, JSW Steel will switch from manual sample/temperature probes to fully automatic sublance measurements. It is estimated that this switch-over will reduce current tap-to-tap times by at least 5 minutes. A new Level 2 process model (SDM) will be installed to further enhance process control of SMS-1 steel making.
The combination of Danieli Corus sublance and process model will enable JSW Steel to control end-of-blow temperature with ± 8°C and ±0.01% Carbon. This improved process control will enable JSW Steel to produce higher quality steel grades, that require stricter specifications.
