Iron ores are rocks and minerals from which metallic iron can be economically extracted. ron is the world's most commonly used metal - steel, of which iron ore is the key ingredient, represents almost 95% of all metal used per year. It is used primarily in structural engineering appliions and in maritime purposes, automobiles, and general industrial appliions (machinery). Iron-rich rocks are common worldwide, but ore-grade commercial mining operations are dominated by the countries listed in the table aside. The major constraint to economics for iron ore deposits is not necessarily the grade or size of the deposits, because it is not particularly hard to geologically prove enough tonnage of the rocks exist. The main constraint is the position of the iron ore relative to market, the cost of rail infrastructure to get it to market and the energy cost required to do so.
In iron ore crushing process include coarse crushing, medium crushing, fine crushing and pulverizing.
In iron ore crushing plant, jaw crusher is often to be selected, in medium crushing process, processer usually use impact crusher, and in the fine crushing, short-head type cone crusher is suitable.
SBM VSI crusher is a better choice to in place of cone crushers. Because, the VSI crushers capital cost per produced ton of iron ore is lower than for a cone crusher and the production costs are also lower. In addition to this, the VSI crusher can cope with wet, sticky materials, in most cases without the need to add water.
The extracted iron ore will be transported to the primary crusher. Over-sized and wet ore will be sent to the ROM stockpile for pre-treatment before it is sent to the primary crusher. Primary and secondary crushing followed by screening will result in lumps and fines sized between -32mm +8mm and -8mm respectively. The lump and fine products will be loaded and hauled to the port.