Industrial Minerals


End User Focus: Refractory replacement

May 2012


With the cost of refractory minerals rising, consumers are increasingly looking for partial or total substitutes to minerals such as bauxite and magnesia. Pasek discusses the applications for the magnesium silicate mineral, dunite

Pasek Minerales was created in 2009 to handle the mining activities of Spanish dunite producer, Pasek Espa–a SA. The company operates two dunite mines in Cabo Ortegal, Galicia, in north-west Spain, which were brought online in the 1970s during a time of significant expansion in Spain’s steel industry.

Steel producers have continued to be important consumers of Pasek’s dunite product, which is promoted as an alternative to magnesite in a number of applications owing to its magnesium silicate composition.

- In the steel industry, the application with the highest volumes of dunite is located inside the blast furnace; here dunite is an MgO-bearing component, which effectively acts as fluxing agent and slag conditioner on the pig iron manufacturing process;

- The electric arc furnace is another important consumer of dunite in the form of tap hole sand, which safely keeps molten steel in the furnace...