After being processed, steel slag can be used as smelter flux, cement raw material, construction aggregate, foundation backfill, railway ballast, road pavement, brick, slag fertilizer and soil amendment, etc.
Steel slag is a by-product of the steelmaking process. It is composed of various oxides oxidized in the smelting process by impurities such as silicon, manganese, phosphorus and sulfur in pig iron and salts generated by the reaction of these oxides with solvents. The mineral composition of steel slag is mainly tricalcium silicate, followed by dicalcium silicate, RO phase, dicalcium ferrite and free calcium oxide.
There are two main ways for the comprehensive utilization of steel slag as secondary resources. One is recycling as a smelting solvent in our factory, which can not only replace limestone, but also recover a large amount of metallic iron and other useful elements from it. The other is as a raw material for manufacturing road construction materials, construction materials or agricultural fertilizers.
Raw material (less than 350mm ) will be conveyed to vibrating feeder, grate of vibrating feeder is set to 100mm, material with size less than 100mm(from vibrating feeder) will be conveyed to cone crusher, material with size larger than 100mm will be conveyed to jaw crusher for primary crushing.
The material from jaw crusher will be conveyed to cone crusher for secondary crushing, one magnetic separator is used in front of cone crusher for removing iron, and another magnetic separator is used behind cone crusher for removing steel chips from slag.
The material after passing through magnetic separator will be conveyed to vibrating screen for screening; material with size larger than 10mm will be conveyed back to cone crusher for being crushed once again, material with size less than 10mm will be discharged as final product.
Steel slag is a kind of solid waste that is produced in the process of steel production, it mainly consists of blast furnace slag, steel slag, iron bearing dust (including iron oxide scale, dust, blast furnace dust, etc), coal dust, gypsum, rejected refractory, etc.
The pile of steel slag occupies a huge area of arable land, and causes environmental pollution; moreover, 7%-15% steel can be recycled from steel slag. After being processed, steel slag can be used as smelter flux, cement raw material, construction aggregate, foundation backfill, railway ballast, road pavement, brick, slag fertilizer and soil amendment, etc. Comprehensive utilization of steel slag can lead to enormous economic and social benefits.
Steel slag crushing production line adopts jaw crusher for primary crushing, and uses hydraulic cone crusher for secondary and tertiary crushing, offering high crushing efficiency, low wear, energy saving and environmental protection, it has the features of high automation, low operation cost and reasonable allocation of equipment.
4. SANME can provide technological process plans and technical support according to the actual requirements of customers, and can also design non-standard supporting components according to the actual installation conditions of customers.
PCX Series High Efficient Hammer Fine Crusher, also be called as Impact High Efficiency Fine Crusher, is suitable for crushing limestone, marlstone, etc, of which the crushing compressive strength does not exceed 200MPa.
Multiple crushing chamber combination, new convenient double adjustment structure, the output size above 3mm can reach 85%, finished particle size is fine and uniform, convenient inspection and maintenance equipment, high chromium alloy wear-resistant material, stable operation, low dust low power consumption, except which, high efficient fine crusher hammer can be used for 4 times by turns, hammer life are doubled, largely decrease cost, improve return on investment.
Uper fine crushing: Reasonable multiple crushing chamber combination, new convenient double adjustment structure, the output size being smaller than 3mm can reach 85%, finished particle size is fine and uniform.
PCX High Efficient Fine Crusher is suitable for crushing limestone, marlstone, sand stone, gypsum, coal, etc, of which the crushing compressive strength does not exceed 200MPa. Meanwhile, it is also the supporting equipment for sand stone production line, ore beneficiation equipment, aerated concrete equipment. PCX High Efficient Fine Crusher possesses large crushing cavity and input opening, be suitable for large ore to be in smoothly.
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Successful briquetting is not restricted to hydraulic piston presses. The process parameters (necessary pressure and temperature) can also be realized with roller briquetting machines. Hot briquetting at 350 MPa and 800 C of Midrex residues without sponge iron pellets is an option for recycling them in the Midrex shaft furnace.
an additional briquetting plant could be dispensed with and the existing roller press could be used for hot briquetting. Two pro-cedures are considered for adding the residues to DRI pellets during hot briquetting. The rst procedure feeds hot reduced pellets and dry, cold residual materials into the roller gap of
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Steel slag briquette machine is a machine used for pressing the powdery materials into pellets. All the waste and auxiliary materials in the metallurgy that need to be placed into the furnace need to be pelleted with ball press machine including fly ash, pool mud, sinter, steel slag, iron finemeal, iron powder, aluminum ash powder, silico .