About the steel slag treatment
Steel slag
Protecting steel-making process is at a high temperature melting furnace melting into two mutually exclusive of the liquid phase, to separate steel and other impurities. Impurities shall be of steel slag in this context. Concentrationof burden it is formed by oxidation of oxides. Through control of steel slag for steel-making process typically. Slag system is appropriate, on the speed and extent of removing impurities from molten steel had a large influence, in addition to smelting furnace and time in life have a certain impact.
Steel slag properties including chemical composition, mineral composition and physical properties. Property of steel slag has changed a lot, it is supported by charging, melting the steel grades and operational methods, and many other factors influence.
Steel slag smelting process in General can be divided into: residue, in the early days, cast-steel refining slag and steel slag residue. After some three slag slag collectively referred to as late. Steel slag by morphological distinction: water quenching slag, massive granular slag and steel slag powder. Although around the slag its properties vary greatly, there are still similarities but the same type of steel slag.
Steel slag main components
(1) the element is generated by oxidation of the metal burden oxides and sulfides;
(2) eroded the lining and patching materials;
(3) metal burden to impurities such as sand;
(4) is joined by adjusting property of steel slag slag material such as limestone, iron ore, fluorspar, and so on.
Utilization of steel slag range, generally based on its chemical composition. High content of calcium oxide-slag suitable for the production of cement; high content of calcium oxide, magnesium oxide and iron oxide slag can be used in sintering and ironmaking production; high content of steel slag to produce phosphorus pentoxide phosphate fertilizer.
Steel slag processing technology
(A) hot throwing method: just out steelmaking furnace of hot melt steel slag pour people slag tank Hou, with vehicles games to steel slag hot throwing workshop, using crane will slag tank of liquid slag tiered throwing pour in slag bed or slag pit within. spray drenched appropriate of water, makes high temperature slag anxious cold fragmentation and accelerated cooling, then with mount machine, and shovel, device for mining loading, then games to abandoned slag field. Games you want to play with processing to steel slag treatment workshop for crushing, screening, magnetic separation technology, such as processing.
(B) splashes water cooling method ((ISC method): set elevated splashing slag palte in steel slag workshop, use crane to splash liquid slag in the slag pot in the slag plate, General 30~120mm thick slag layer, then spray some water to quench cracking. Then crushed slag slag overturned in the car, drove to the pool water spray to cool, then residue discharging to further cooling in a pond. Slag as compared with General 5~l00mm. at last use grab bucket to grab out and load to the vehicle, send to steel slag treatment workshop. do magnetic separation, crushing, screning and finishing.
(C) steel slag water quenching method: hot molten slag outflow declined in the course of pressure water divide, smash, combined with molten slag water quenching shrinkage stress concentration and cracked, make melt slag granulating. Because of the viscosity of liquid slag, its water quenching difficulty is also large. To prevent the explosion, some adopt slag pot holes. water quenching slag ditch and through flow slag slag pot limit the maximum aperture.
(D) wind quenching method: Standard Chartered e access after the molten slag, shipped to the air-quenching device, tipping slag pot, after tundish slag outflow, is a special nozzle spray out of the air blown, broken into particles, in Bell-type boiler that has been in recovery of high temperature air and particles in slag slag heat and trapping of particles. After wind quenching and converter slag into particles, can be used for building material; there are boiler temperature of steam for drying iron oxide.
(E) steel slag chalking treatment: this process also known as a hot stuffy method was just solidified slag at high temperatures more people in a large box and water, the water turns to steam at high temperature. Because steel slag contains a combination of free calcium oxide, calcium hydroxide water generated and expansion, thus prompting of crack and powder of steel slag. Rate of steel slag powder to less than 0.3mm 50%~80%. Such treatment may improve the stability of steel slag. and may reduce the amount of steel slag crushing processing while reducing wear.
Slag grinding equipment
Slag grinding equipment are devices must be in the steel slag processing technology. Common steel slag grinding equipment including steel slag and steel slag Crusher mill. Steel slag crusher jaw crusher, impact crusher, cone crusher, mobile crusher, etc. Steel slag mill ball mill, Raymond mill, mill, pneumatic mill. Shanghai shibang machinery co, Ltd is specialized in manufacturing crusher and grinder manufacturer whose products have been exported to more than 180 countries and regions in the world. Many steel slag processing factories were selected as Shanghai shibang crusher and mill slag grinding equipment. If you need to purchase steel slag grinding equipment or for steel slag grinding equipment related to the information, please contact us at the online customer service. Shanghai shibang will provide you with satisfactory products and considerate service.