All around blast furnace repair
Based on a large product portfolio of refractories, Seven offers the most integrated approach to blast furnace repairs.
From 8 to 16 from Monday to Friday you can call, also you can write the email to the general address: [email protected] +4313430164
Seven offers the most integrated approach to blast furnace repairs.
Based on a large product portfolio of refractories, Seven offers the most integrated approach to blast furnace repairs.
Facts & Figures
Blast furnaces have been at the core of Seven’s activities right from the start, with more than 60 successfully completed projects world-wide in only 10 years.
The most comprehensive repair to date included the hearth, the shaft, the gas up-takes, and the cyclone.
The fastest repair was performed in only five days with robotic shot-creting, reaching a record speed of more than 14 tons per hour.
The prize for the coldest repair project goes to a blast furnace repair at minus 35 degrees.
Entrust us with your blast furnace repair and let us set a record for you.
Seven Blast Furnace Repair Advantages
- Total care of the entire repair project:
Seven combines state-of-the-art material with complete project management. Each project is guided from initial study through all steps of installation. For the repair project, the customer has one single contact interface.
The Modular Hearth Shield (MHS) by Seven Refractories offers products to create a protective long lasting layer for the carbon lining in the blast furnace hearth.
With this concept we offer an ideal geometrical solution based on optimal material quality, instead of liningfollowing a “just enough” approach.
Carbon lining protection, i.e. contrast the erosion mechanisms given by:
Ready-to-use block shapes prevent hot metal from floating out and the improved heat-transfer to the cooling elements contributes to the formation of a dense protective layer at the MHS surface that preserves the blocks from further consumption, thus enabling them to exploit their proper technical function.
All in all, the MHS solution leads to several years of life expectance and therefore cost savings.
A refractory model designed to optimize the whole of hearth lining, block shapes, quality zoning distribution, thermo-mechanical stresses.
A pre-assembled solution allows:
✔ any geometry of the blocks also in terms of thickness, shapes and quality distribution,
✔ long term solution. Protecting the carbon lining by a “MHS technique” which operate for 5-6 years,
✔ less CO2 emission,
✔ less fuel consumption.
All blocks are engineered on white fused alumina and/or fused alumina – mullite; the ramming is engineered on brown fused alumina – Carbon – SiC; the mortar is engineered on brown fused alumina-bauxite.
Material quality and geometrical solution overcome the concept “preshaped” lining.