Russian steelmaker OJSC Magnitogorsk Iron and Steel Works (MMK) has completed the modernisation of its turbo blowing machine number 8 (TBM-8) and is now planning to overhaul its blast furnace number 9.
The modernisation of TBM-8 was completed in May and included the replacement of a steam turbine and all auxiliary equipment, such as reheaters, pumps and pipelines. The compressor was also repaired and the unit was equipped with an automated control system enabling optimal operational modes for TBM-8.
According to MMK, the upgraded equipment will reduce energy input costs in addition to enabling one of the mill’s largest blast furnaces to operate stably throughout the year. TBM-8 provides high quality blast heating to the company’s Blast Furnace number 10.
MMK is planning to replace the cooling units and repair the lining of blast furnace number 9 with a view to increasing pig iron output and reduce cash costs.
The Russian steelmaker has been busy overhauling other blast furnaces on-site. Blast furnace number 6 was reconstructed in 2013 while number 8’s overhaul was completed in March this year. – Key components such as cooling units, housing, lining and hearth cooling pipes were replaced and a new ‘ceramic bucket’ protects the hearth and furnaces’ carbon blocks, which will reduce heat losses and extend the hearth’s service life, claims MMK.
The new refractory linings on MMK blast furnaces are designed to increase intervals between repairs. Automation controls have been upgraded and new controllers installed.