Slag mainly calcium, iron, silicon, magnesium along with a little bit of aluminum, manganese, phosphorus oxide composition. The key mineral phase tricalcium silicate, dicalcium silicate, magnesium and calcium olivine, magnesium and calcium Rhodonite, Iron, Aluminium, calcium and silicon, magnesium, iron, manganese, phosphorus oxides type solid solution, but in addition Little bit of calcium oxide and metallic iron, fluorine apatite. In certain areas because of ore that contains titanium and vanadium slag also include these elements slightly.
Began to review early 20th century how the utilization of steel slag, but due to the volatile elements, the delay in program. Early 70s, the U.S. to start with emissions of 17 million tons each year of steel slag all usage of them. Currently, Federal Republic of Germany, a lot of the slag has been utilized. Britain, France, slag utilization rate of 60% and 50% for Japan, China, about 10%.
Many nations the prevailing treatment solutions are hot slag poured law, be poured right into a unique liquid slag disposal sites, slag layer thickness of 30 cm below the correct amount of water spray to market its cooling, then crushing, screening, magnetic separation, To recoup the metal, as the comprehensive usage of slag blocks.
The usage of slag vary because of composition.
Slagging every year how much U.S. Two-thirds since the iron flux, added to the blast furnace or sinter inside the steel plant internal recycling. Slag composition, along with silicon away from useless and dangerous phosphorus, calcium, iron, magnesium and manganese (which collectively take into account 80% from the total steel slag) happen to be utilized.
France, Federal Republic of Germany, Canada along with other countries regarded this kind of slag employed for railway ballast and street materials.
Western Countries in europe as fertilizer with good phosphorus steel slag includes a lengthy background. Slag of calcium, silicon, manganese and trace components were fertilizer, manure can be utilized as slag in acid soil. Numerous steel slag can be utilized as fill pits, reclamation material.
China has become creating small quantities of steel slag cement, the usage of converter slag combined with 50% granulated blast furnace slag, about 10% gypsum, slag cement clinker grinding no, or about 15% less cement clinker grinding clinker slag as opposed to cement. Furnace slag utilized in particular areas in China creating white slag cement.
Japan, the federal government Republic of Germany using steel slag being a cement garbage, calcined ferrite cement, can help to save energy. Furthermore, the slag may also manufacture bricks, tiles, carbon building materials.
In the recycling of steel slag, crusher and milling machine is vital equipment. Slag powder equipment, steel slag powder production line, slag powder technologies may be the company for quite some time promoting complete groups of manufacturing line gear both at home and overseas, one of many comprehensive using sources, steel slag as well as other sources to attain higher additional value, helping the overall amount of beneficiation process have played a Active role, and it is performance is widely praised by customers and affirmation. Manufacturing lines are the organization to fulfill the numerous requirements of business slag processing, engineered for particular procedure. Slag may be high-quality garbage, obtained following treatment can greatly enhance the use and worth.
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