What are the environmental protection elements in iron ore?
The iron ore resources China much and not rich, with low grade ore, ore reserves accounted for only 1.8%, while the ore reserves accounted for 47.6%. Small and medium-sized mines, large mines less, large mines less. Ore type is complex, difficult to ore dressing and multi component (CO) ore occupies a major proportion. The hematite and multicomponent ore reserves accounted for the total reserves of 1/3, the total (with) component including V, Ti, Cu, Pb, Zn, Co, Nb, Se, Sb, W, Sn, Mo, Au, Ag, S, rare earth element 30 the main types are Ti, V, Nb, Cu, Co, S and rare earth elements, some common (with) component of economic value even more than the value of iron ore, such as Baiyunebo iron ore rich in REO and Ta, Nb; Panzhihua Sefstromite in V and Ti reserves in the world before a. With the improvement of separation and application technology, these common components will be fully recovered and utilized. Some red ore useful components, cloth size, or with harmful components embedded closely, difficult to choose, not recycling, resulting in iron ore beneficiation recovery rate is low, a large number of useful components lost to tailings. There are some magnetite ore deposits with low middle grade but easy to pick and choose. Among them, low grade ore with many marginal benefits, if appropriate economic stimulus policy, can also be fully exploited and utilized.
There are many kinds of iron minerals. More than 300 kinds of iron minerals and iron minerals have been found, of which more than 170 species are common. But under the current technical conditions, the main industrial value is magnetite, hematite, magnetite, ilmenite, limonite and siderite.
7 poisonous and harmful elements such as mercury, arsenic, lead, cadmium, sulfur, chlorine and fluorine in iron ore.Iron is the world's earliest discovery, the most widely used, the amount is also the most metal, its consumption accounts for about 95% of the total consumption of metal. Iron ore is mainly used in the iron and steel industry, smelting carbon containing different pig iron (including carbon content is generally more than 2%) and steel (carbon content is generally below 2%).
