Slag Grinding Mining And Processing Solution2021-06-15

What Is Slag

Slag is an industrial waste removed from the ironmaking process. In the blast furnace ironmaking process, in addition to iron ore and fuel, in order to reduce the smelting temperature, an appropriate amount of limestone must be added as a co-solvent, which is obtained by decomposition in the blast furnace Calcium oxide, magnesium oxide and waste ore in iron ore, as well as the ash in coke dissolve to form a melt with silicate and aluminosilicate as the main components, which floats on the surface of the molten iron and is regularly discharged from the slag discharge port After air or water quenching treatment, granular particles are formed, which is granulated blast furnace slag, referred to as "slag". Slag is a material with "potential hydraulicity", that is, it is basically non-hydraulic when it exists alone, but it exhibits hydraulicity under the action of certain activators (lime, clinker powder, alkalis, gypsum, etc.).

Use Of Slag

Slag Powder Production Process

The main blast furnace slag raw material composition analysis table (%)

Species CaO SiO2 Fe2O3 MgO MnO Fe2O3 S TiO2 V2O5
Steelmaking, casting
blast furnace slag
32-49 32-41 6-17 2-13 0.1-4 0.2-4 0.2-2 - -
Ferromanganese Slag 25-47 21-37 7-23 1-9 3-24 0.1-1.7 0.2-2 - -
Vanadium iron slag 20-31 19-32 13-17 7-9 0.3-1.2 0.2-1.9 0.2-1 6-25 0.06-1

Mill recommendation

Coarse powder( 30-400 mesh) Fine powder (600-2000 mesh)
Vertical mill or Raymond mill  Super fine mill

Remarks: Choose different types of hosts according to the output and fineness requirements.

 

The First Stage: The Crushing Of Raw Materials

The large bauxite material is crushed by the crusher to the fineness (15mm-50mm) that can enter the mill.

The Second Stage: Milling

The crushed bauxite pieces are sent to the storage hopper by the elevator, and then sent to the grinding chamber of the mill evenly and quantitatively by the feeder for grinding.

The Third Stage: Classification

The ground material is classified by the classification system, and the unqualified powder is classified by the classifier and returned to the main engine for re-grinding.

The Fourth Stage: The Collection Of Finished Products

The powder that meets the fineness is separated and collected in the dust collector through the pipeline through the airflow. The collected finished powder is sent to the finished product silo by the conveying device through the discharge port, and then is packaged by a powder tanker or an automatic baler.

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