Last updated
Type Private
Industry Metal
Key people
Kjetil Holta
Products Ferroalloys, Pig Iron and energy
RevenueIncrease2.svg NOK 6.000 million (in 2006)
Number of employees
Website http://www.tinfos. no/

Tinfos is a private Norwegian holding company. Its roots dates back to 1875, and has today the head office in Oslo, Norway. The firm is one of the oldest companies in its field of activity in Europe. Its main products are silicomanganese, High Purity Pig Iron and titanium dioxide. The company is structured in 4 different divisions. Tinfos AS was sold 15 April 2008 to the French-based manganese company Eramet. [1] In 2009, Eramet sold the international unit of Tinfos to Holta Invest AS, a Norwegian investment company. [2]


Tinfos Jernverk

Tinfos Jernverk produces silicomanganese, [3] an alloy used for all steel. The company is the world leader in the production of low carbon silicomanganese for primarily stainless steel. The plant is located in Kvinesdal, Norway.

Tinfos Titan and Iron

Tinfos Titan and Iron produces titanium dioxide slag for the pigment industry and high quality Pig Iron for the foundry industry at the plant in Tyssedal, Norway. The raw material used in the process is ilmenite.


Tinfos is generating energy for its own consumption through hydropower plants in Tyssedal and in Notodden. It is also recovering energy through the thermal power plant in Kvinesdal. The division also promotes small scale turnkey power plants.

Tinfos Nizi

Tinfos Nizi now Nizi International is responsible for the worldwide trading operations with head offices in Luxembourg.


Related Research Articles

Manganese Chemical element, symbol Mn and atomic number 25

Manganese is a chemical element with the symbol Mn and atomic number 25. It is not found as a free element in nature; it is often found in minerals in combination with iron. Manganese is a transition metal with a multifaceted array of industrial alloy uses, particularly in stainless steels.

Titanium Chemical element, symbol Ti and atomic number 22

Titanium is a chemical element with the symbol Ti and atomic number 22. Its atomic weight is 47.867 measured in daltons. It is a lustrous transition metal with a silver color, low density, and high strength. Titanium is resistant to corrosion in sea water, aqua regia, and chlorine.


Ilmenite, also known as manaccanite, is a titanium-iron oxide mineral with the idealized formula FeTiO
. It is a weakly magnetic black or steel-gray solid. From a commercial perspective, ilmenite is the most important ore of titanium. Ilmenite is the main source of titanium dioxide, which is used in paints, printing inks, fabrics, plastics, paper, sunscreen, food and cosmetics.

Steelmaking Process for producing steel from iron ore and scrap

Steelmaking is the process of producing steel from iron ore and/or scrap. In steelmaking, impurities such as nitrogen, silicon, phosphorus, sulfur and excess carbon are removed from the sourced iron, and alloying elements such as manganese, nickel, chromium, carbon and vanadium are added to produce different grades of steel. Limiting dissolved gases such as nitrogen and oxygen and entrained impurities in the steel is also important to ensure the quality of the products cast from the liquid steel.

Norwegian University of Science and Technology University in Trondheim, Norway

The Norwegian University of Science and Technology is a public research university in Norway with the main campus in Trondheim and smaller campuses in Gjøvik and Ålesund. The largest university in Norway, NTNU has over 8,000 employees and over 40,000 students. NTNU in its current form was established by the King-in-Council in 1996 by the merger of the former University of Trondheim and other university-level institutions, with roots dating back to 1760, and has later also incorporated some former university colleges. NTNU is consistently ranked in the top one percentage among the world's universities, usually in the 101–500 range depending on ranking.

SINTEF, headquartered in Trondheim, Norway, is an independent research organization founded in 1950 that conducts contract research and development projects. SINTEF has 2000 employees from 75 countries and annual revenues of three billion Norwegian kroner. SINTEF has a close partnership with Norwegian University of Science and Technology (NTNU), started in 1950 when SINTEF was founded. SINTEF has expertise in technology, medicine and the social sciences. Alexandra Bech Gjørv is the CEO of SINTEF, preceded by Unni Steinsmo, Morten Loktu and Roar Arntzen.

Ferroalloy refers to various alloys of iron with a high proportion of one or more other elements such as manganese (Mn), aluminium (Al), or silicon (Si). They are used in the production of steels and alloys. The alloys impart distinctive qualities to steel and cast iron or serve important functions during production and are, therefore, closely associated with the iron and steel industry, the leading consumer of ferroalloys. The leading producers of ferroalloys in 2014 were China, South Africa, India, Russia and Kazakhstan, which accounted for 84% of the world production. World production of ferroalloys was estimated as 52.8 million tonnes in 2015.

Kobe Steel Japanese steelmaker

Kobe Steel, Ltd., operating worldwide under the brand Kobelco, is a major Japanese steel manufacturer headquartered in Chūō-ku, Kobe. Kobe Steel also has a stake in Osaka Titanium Technologies. The company supplies about half of the global market of the wires used in valve springs of auto engines.


Eramet is a French multinational mining and metallurgy company, listed on the Euronext Paris exchange under the symbol ERA.


Ironsand, also known as iron-sand or iron sand, is a type of sand with heavy concentrations of iron. It is typically dark grey or blackish in colour.

Tyssedal Village in Western Norway, Norway

Tyssedal is a village in Ullensvang municipality in Vestland county, Norway. The village is located on the shore of the Sørfjorden about 6 kilometres (3.7 mi) north of the town of Odda. Tyssedal is located in an environment in a valley between the fjord to the west and the mountains leading up to the Hardangervidda mountain plateau to the east.

Nizi International S.A. is a metals trading company headquartered in Capellen, Luxembourg. Nizi is owned by the Norwegian company Holta Invest and part of the Nizi Group. It was founded by Nicolas Zimmer in 1898, making it one of the oldest companies in its field of activity in Europe. Its main products are ferro alloys, foundry products, base metals and concentrates. Being a former part of the Tinfos Group, Nizi International was fully acquired by Holta Invest in 2010 and subsequently changed its name from Tinfos Nizi to Nizi International S.A.

Terra Securities scandal

The Terra Securities scandal was a scandal that became public in November 2007. It involved highly speculative investments by eight municipalities of Norway in various hedge funds in the United States bond market. The funds were sold by Terra Securities to the municipalities, while the products were delivered by Citigroup. The municipalities involved were Narvik, Rana, Hattfjelldal and Hemnes in Nordland, Vik and Bremanger in Sogn og Fjordane, Haugesund in Rogaland, and Kvinesdal in Vest-Agder, all large producers of hydroelectricity.

The mineral industry of Paraguay includes the production of cement, iron and steel, and petroleum derivatives. Paraguay has no known natural gas or oil reserves. To meet its crude oil and petroleum products demand, Paraguay relies completely on results of approximately 25,400 barrels per day (4,040 m3/d) (bbl/d). The mining sector contributes little to the country's economy, accounting for only 0.1% of its gross domestic production (GDP).

Metal production in Ukraine

Metal production, in particular iron and steel industry, is the dominant heavy industry in Ukraine. Ukraine is the world's eighth largest producer and third largest exporter of iron and steel (2007). Ukrainian iron and steel industry accounts for around 2% of worldwide crude steel output, 5% to 6% of the national gross domestic product and 34% of Ukrainian export revenue. In 2007 it employed 420,000 people – 10% of industrial labor and 2% of the total workforce. It has the highest, by a wide margin, revealed comparative advantage of all branches of the Ukrainian economy. The industry peaked at 42.8 million tonnes in 2007 but has been gravely affected by the financial crisis of 2007–2010 and declined to 29.8 million tonnes in 2009.

Eramet Titanium & Iron is a pig iron and titanium dioxide clinker plant in Tyssedal, Norway.

Rjukan–Notodden Industrial Heritage Site

The Rjukan–Notodden Industrial Heritage Site is a World Heritage Site in Vestfold & Telemark county, Norway, created to protect the industrial landscape around Lake Heddalsvatnet and Vestfjorddalen valley. The landscape is centered on the plant built by the Norsk Hydro company to produce calcium nitrate fertilizer from atmospheric nitrogen using the Birkeland–Eyde process. The complex also includes hydroelectric power plants, railways, transmission lines, factories, and workers' accommodation and social institutions in the towns of Notodden and Rjukan.

In 2014, the United States was the world’s third-largest producer of raw steel, and the sixth-largest producer of pig iron. The industry produced 29 million metric tons of pig iron and 88 million tons of steel. Most iron and steel in the United States is now made from iron and steel scrap, rather than iron ore. The United States is also a major importer of iron and steel, as well as iron and steel products.

Compagnie minière de lOgooué

The Compagnie minière de l'Ogooué, or COMILOG, is a manganese mining and processing company based in Moanda, Gabon. It is a subsidiary of the French metallurgical group Eramet. The company is the world's second largest producer of manganese ore. At first the ore was carried by a cableway to the border with the Republic of the Congo, then by rail to the sea at Pointe-Noire. In the 1980s a railway was built to carry the ore through Gabon to the sea near Libreville.


  1. Burton, Melanie; Mullen, Jethro (2008-04-16). "Eramet Is Buying Tinfos To Lift Manganese Output". Wall Street Journal. ISSN   0099-9660 . Retrieved 2017-09-12.
  2. "Eramet To Sell Tinfos International Unit To Holta Invest". ADVFN. Retrieved 2017-09-12.
  3. "Use of charcoal in silicomanganese production - SINTEF". SINTEF. Archived from the original on 2017-09-12. Retrieved 2017-09-12.