Magnesia features

  • January 2002

    North American GCC - Crushed, ground and bagged

    01 January 2002

    Ground calcium carbonate (GCC) is one of the most widely used industrial minerals, due to characteristics such as wide availability, low cost, good (white) colour, low oil absorption and a wide range of particle sizes. It has become an increasingly important functional additive in product formulations as processing techniques have improved its quality. The North American industry is driven by the construction and automotive markets it serves with leading producers investing to produce finer particle sizes to realise higher margins in a trading environment that has stymied price increases.

  • Egyptian silica

    01 January 2002

    Egypt is endowed with large reserves of high grade silica in the form of white sand and quartzite in the Sinai Peninsula, the Eastern Desert and the Nile Valley. About 15 localities of white sand, varying in geological age, reserves, grades, way of assessment, and availability of infrastructure were identified by the Egyptian eological Survey and Mining Authority (EGSMA). This short feature outlines the main deposits studied and progress made in their beneficiation for downstream markets.

  • Trends in abrasives - China versus the rest to continue?

    01 January 2002

    Are the concerns and complaints of the remaining fused alumina producers outside China justified or do they simply stem from self-interest? Have attempts by the European Union to protect its own fused alumina industry through anti-dumping measures been successful or not? And can we expect any significant changes in Chinese production or export policy in the near future? This article attempts to answer these questions from the viewpoint of one of only two surviving fused alumina producers in western Europe, Treibacher Schleifmittel

  • Nitrates

    01 January 2002