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Making stronger concrete with 'sewage-enhanced' steel slag

Steel slag can also be used to absorb contaminants like phosphate magnesium iron calcium silica and aluminum in the wastewater treatment process but loses its effectiveness over time.

Geotechnical and Environmental Impacts of Steel Slag Use in ...

methodology that promotes the use of steel slag in highway embankments by minimizing these two main disadvantages. Accelerated swelling tests were conducted to evaluate the swelling behavior of pure steel slag and SS treated water treatment residual (WTR) an alum-rich by-product of drinking water treatment plants.

Steel Slag Aggregate - an overview | ScienceDirect Topics

The other way of improving slag aggregate quality (particularly the ITZ) is by an accelerated carbonation treatment of steel slag aggregate. This carbonation process is conducted in a carbonation reactor that has been sealed to 70°C and vacuumed to −0.3 MPa [12]. Then CO 2 was introduced into the reactor until the pressure reached 0.3 MPa. This process caused a change in the aggregate pore structure.

Using steel slag to treat sewage makes it better for use in ...

Steel slag is currently utilized both to treat wastewater and as a concrete aggregate. New research now indicates that using it for the former makes it perform even better as the latter – so the...

Steel Slag - an overview | ScienceDirect Topics

For steel slag used as a coarse aggregate in a bound condition or in a rigid matrix such as PCC the resulting integrity and volume stability are basically controlled by the minimum allowable stress of the matrix materials cement mortar for instance and the maximum expansion stress which can be deduced from the expansion force based on appropriate modeling of steel slag particles in the matrix. A usability criterion for steel slag use in confined conditions can be developed by relating ...

Steel slag in China: Treatment recycling and management ...

1. Introduction. Steel slag is the oxidized material that is generated when lime dolomite and other auxiliary materials are added and oxygen is blown onto the pig iron produced by a blast furnace to remove carbon (C) phosphorus (P) sulfur (S) and other components to produce crude steel in a basic oxygen furnace (BOF).

An Assessment of Iron and Steel Slag for treatment of ...

2.3 Assessment of iron and steel slag products as a treatment media 9 3. Results and Discussion 10 3.1 The environmental impact of different iron and steel slag 10 3.2 Removal of contaminants from stormwater by filter media 10 3.3 Assessment of slag as a treatment media for stormwater 28 3.4 Uses identified 30 4.

Properties and Uses of Steelmaking Slag – IspatGuru

Properties and Uses of Steelmaking Slag. Steelmaking slag is an integral part of the steelmaking process. It is produced during the separation of the liquid steel from impurities in steelmaking furnace and is a non-metallic by-product of steelmaking process. It occurs as a molten liquid melt and is a complex solution of silicates and oxides ...

Steel slag in China: Treatment recycling and management ...

Steel slag is the main waste product in the steelmaking process. Because of its chemical composition and technical properties it can be reused as material in steel plants and can serve as a substitute for aggregates in civil engineering. In this paper we reviewed steel slag treatment recycling and management in China.

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