SSAB EMEA AB Oxelösund Blast Furnace 4

Demolition of the old and installation of a new furnace lining.

In December 2010 HeatTeQ received an enquiry from SSAB for the reline of blast furnace 4 in Oxelösund. The reline was scheduled for the summer stop of 2011, from the end of week 27 to the end of week 37. The scope of the enquiry covered the following activities:

  • 1. All preparatory work;
  • 2. Demolition services for mechanical and refractory portion;
  • 3. All necessary demolition equipment;
  • 4. Installation services for mechanical and refractory portion;
  • 5. All necessary installation equipment.

We prepared our proposal with a combination of companies who all have extensive experience with working for HeatTeQ and SSAB Oxelösund and at Blast Furnace #4 in particular. HeatTeQ as main contractor was responsible for project management and overall coordination, Berglagens Eldfasta for demolition and Empower AB for all Mechanical work. Installation of refractories was handled jointly between HeatTeQ and Berglagens using bricklayers from Lizmontagens.

Facts & figures

Site: . . . . . SSAB EMEA AB Oxelösund Sweden.
Duration: . . . . . . . . . . . . . . . . . . . . . . . 70 days
Plant: . . . . . . . . . . . . . . . . . . . . . Blast Furnace 4 .
Manhours: . . . . . . . . . . . . . . . . . . . . . . . 30.000
Design: . . . . . . . . . . . . . . . . . . . . . . . Paul Wurth.

Tonnage: . . . . . . . . . . . . . . . . Refractory: 1.200 ton
Execution: . . . . . . . . . . . . . . . July-September 2011.
Scope: . . . . . . . . . . . .Demolition of old and installation of new furnace lining
Partners: . . . . . . . . . Bergslagens Eldfasta, Empower AB

On February 14, 2011 HeatTeQ was awarded the order and preparations started with the design and fabrication of auxiliary equipment. On July 7 the furnace blow down started. After salamander tapping and quenching demolition started and was completed on July 31 and brick installation could start.

Installation was executed in parallel, working on 3 levels:
Level 1: Hearth, bosh and lower stack using scaffolding erected on the furnace bottom.
Level 2: Middle and upper stack using a swinging deck suspended from a fixed top platform.
Level 3: Throat armour and top cone from a fixed top platform.

On September 25 refractory installation was completed and handed over to SSAB. Mainly due to a salamander which was considerably bigger than anticipated this was about 10 days later than the scheduled completion date. The project was completed with zero accidents and to the total satisfaction of SSAB.