Table of Contents
Where does bog ore come from?
bog iron ore, Iron ore consisting of hydrated iron oxide minerals such as limonite and goethite formed by precipitation of groundwater flowing into wetlands. Bacterial action contributes to formation of the ore. Economically useful deposits can regrow within 20 years after harvesting.
What is iron ore?
Iron ore is a mineral substance which, when heated in the presence of a reductant, will yield metallic iron (Fe). It almost always consists of iron oxides, the primary forms of which are magnetite (Fe3O4) and hematite (Fe2O3). Iron ore is the source of primary iron for the world’s iron and steel industries.
How do you process iron ore?
Six steps to process iron ore
- Screening. We recommend that you begin by screening the iron ore to separate fine particles below the crusher’s CSS before the crushing stage.
- Crushing and stock piling.
- Feeding the crusher (Reclaim)
- Grinding.
- Spiral gravity separation.
- Magnetic separation.
How is iron ore mined?
Mined out of the ground, raw ore is a mixture of materials called ore proper and loose earth called gangue (waste). The ore proper is separated by crushing the raw ore are simply washing away the lighter soil. Breaking down the ore from its impurities is more difficult.
Where is the bog?
Bogs are generally found in cool, northern climates. They often develop in poorly draining lake basins created by glaciers during the most recent ice age. The world’s largest wetland is a series of bogs in the Siberia region of Russia.
How is bog iron ore formed?
Bog iron ore, Iron ore consisting of hydrated iron oxide minerals such as limonite and goethite formed by precipitation of groundwater flowing into wetlands. Bacterial action contributes to formation of the ore. Economically useful deposits can regrow within 20 years after harvesting.
Why was bog ore important in the Middle Ages?
Even after improved smelting technology made mined ores viable during the Middle Ages, bog ore remained important, particularly to peasant iron production, into modern times. In Russia, bog ore was the principal source of iron until the 16th century, when the superior ores of the Ural Mountains became available.
Where was bog iron found in North America?
Bog iron was widely sought in colonial North America. The earliest known iron mines in North America are the mines from St. John’s, Newfoundland, reported to be in operation by Anthony Parkhurst in 1578.
Why is bog iron a good sorbent material?
Bog iron, like other hydrous iron oxides, has a specific affinity for heavy metals. This affinity combined with the porous structure and high specific surface area of bog iron make it a good natural sorbent.