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Thermolith S.A.

P.O. Box 59, 63100 Polygyrou
Kalyves, 63100 Polygyrou
Telephone +30 237 1054137
Fax +30 237 1054278

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METEC 2019 hall map (Hall 5): stand B03

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METEC 2019 fairground map: Hall 5



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Our range of products

Product categories

  • 13  Miscellaneous equipment for metallurgical plants and rolling mills
  • 13.06  Thermal insulation and refractory materials

Our products

Product category: Thermal insulation and refractory materials

Olivine for the Steel Industry and foundries

EBT filler sand: produced from selected mineral olivine, a refractory mineral with high percentage of fosterite content and high refractoriness. As a result of long experience and cooperation with the steel making industry, Thermolith offers optimised grain size distributions that guarantee free and easy opening of the EBT in Electric Arc Furnaces. Standard production of EBT filler sand is 1-6mm, 2-5mm, 2-6mm and 3-8mm, etc.
Slag conditioner: In electric arc furnace (EAF) applications, olivine when introduced as a slag conditioner promotes the development of excellent artificial foamy slag and successfully balances viscosity and volume for efficient sulphur removal and electrode protection. Olivine is more consistent in quality and aggregate size than calcinated materials and shows uniform dissolution during a heat. Standard production of Thermo slag conditioner is 10-40mm.
Foundry sand: olivine is used as foundry sand as a higly performant media for moulding. It replaces silica sand for improved health and safety conditions for the workers.

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Product category: Thermal insulation and refractory materials

Unshaped refractory mixes for tundish and EAF

Thermolith SA specializes in the production of Magnesia and Magnesia/Olivine based unshaped refractory mixes suitable for gunning or ramming for EAF (Electric Arc Furnace) and dry or wet tundish mixes:
Tundish mixes: dry and wet tundish coating mixes that ensure reliable and continuous casting for many heats and cover all kinds of settings. Our tundish mixes have high insulating properties due to high porosity and easy abruption from the permanent lining.
 Gunning and ramming mixes: magnesia and magnesia-olivine mixes with an excellent cost to consumption ratio with good adhesion and low rebound. High quality magnesia mixes specially designed for use in the most demanding areas of the furnace such as the slag zone, tap hole and nozzles.

Customization thanks to flexible production lines allows  Thermolith to adapt to the needs and requirements of the steelworks, proposing performant and cost-saving solutions.

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Product category: Thermal insulation and refractory materials

Olivine, a mineral with many industrial applications

OLIVINE is a magnesium iron silicate mineral produced thermofluxfrom volcanic rocks. It is named for its typically olive green color. The name olivine is given to members of the fosterite - fayalite solid-solution series.

It is a low cost source of MgO, with good insulating properties, high resistance to alkaline oxides that make it excellent for use in bricks and unshaped refractory. Because of its high melting point and resistance to chemical reagents is an important refractory material and thus can be used in furnace linings and in kilns.

Olivine products are suitable for use as slag conditioner in the steel industry, EBT filler sand, sand blasting and also as foundry sand. In recent years where everything focuses on environmental friendly materials and management the industry has appreciated the "green" character of olivine and as a result olivine has replaced many traditional materials.

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About us

Company portrait

Thermolith S.A. is a privately owned company established in 1998 in Northern Greece for the production of basic unshaped refractories for the steel industry. In 1999 Thermolith acquired the rights for the exploitation of olivine deposits in Greece. Today Thermolith combines mining and processing of olivine with the production of basic unshaped refractory mixes for tundish lining and EAF hot repair. Other activities comprise the production of foundry sand and the production of raw material for the refractory industry.
The company operates 2 plants in Greece and exports olivine and mixes in Europe and Asia.
Customization thanks to flexible production lines allows  Thermolith to adapt to the needs and requirements of the steelworks, proposing performant and cost-saving solutions.

Company data

Sales volume 1-9 Mio US $
Export content max. 75%
Number of employees 20-49
Foundation 1998
Area of business Plant and equipment for steel making

Company information as a PDF file