What are the functions of slag in the production of steel?

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Slag floats on the surface of the molten metal, protecting it from oxidation by the atmosphere and keeping it clean. Slag forms a coarse aggregate used in certain concretes; it is used as a road material and ballast and as a source of available phosphate fertilizer.

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While slags are generally used to remove waste in metal smelting, they can also serve other purposes, such as assisting in the temperature control of the smelting, and minimizing any re-oxidation of the final liquid metal product before the molten metal is removed from the furnace and used to make solid metal.

Beside this, What is slag and where it is used?

Granulated blast furnace slag has been used as a raw material for cement production and as an aggregate and insulating material. and granulated slag have also been used as sand blasting shot materials.

Likewise, What is the importance of slag in metallurgy?

Publisher Summary. Metallurgical slags play an important role in the extraction and refining of metals. They are formed when a flux material, added to or included in the charge, reacts with unwanted minerals during extraction or smelting, or with the products of the oxidation of unwanted solute elements during refining …

Also, What is slag rock used for?

While slags are generally used to remove waste in metal smelting, they can also serve other purposes, such as assisting in the temperature control of the smelting, and minimizing any re-oxidation of the final liquid metal product before the molten metal is removed from the furnace and used to make solid metal.

Why is slag bad?

When SSRS compares with ground granulated blast furnace slag (GGBFS) from iron making, steel slag contains toxic ingredients such as nickel, cadmium, chromium and strontium. These compounds could be harmful not only for environment but also for human health [9,10].


22 Related Question Answers Found

 

What is slag steel production?

Steel slag, a by-product of steel making, is produced during the separation of the molten steel from impurities in steel-making furnaces. The slag occurs as a molten liquid melt and is a complex solution of silicates and oxides that solidifies upon cooling. … MgO or “dolime”), are charged to a converter (furnace).

Is slag a waste?

Slag. Depending on where you’re from, it may be an insult, a term meaning trash, or, in our case, the waste left over from metal smelting or refining. Outside of the construction industry, it might seem that uses for slag are considered limited.

Is slag rock good for driveways?

Steel slag is not just good for driveways, it is also used by homeowners as a landscaping stone in back yards around a pool area or patio. Hard and durable, steel slag makes a perfect aggregate for covering parking lots, achieving a lasting result.

Why is slag important in metallurgy?

Slag, Metallurgical. … They play an important role in the physicochemical processes of metallurgical production: they remove undesirable impurities in metals and protect metals from the harmful effects of the gaseous medium in the furnace (that is, from oxidation and gas saturation).

How is slag disposed of?

While most of the furnace slag is recycled for use as an aggregate, excess steel slag from other operations (raker, ladle, clean out, or pit slag) is usually sent to landfills for disposal. Steel slag can normally be obtained from slag processors who collect the slag from steel-making facilities.

Is slag bad for the environment?

Steel slag contains trace amounts of elements potentially mobile and toxic to the environment [50].

What is slag give an example?

Slag is waste matter separated from metal during smelting. An example of slag is the iron and silica that is removed during copper and lead smelting. … An example of to slag is for the heat of copper smelting to remove the iron and silica from the copper.

What type of rock do you use for driveways?

Based on appearance, longevity, and purpose, we identified Jersey Shore gravel and pea gravel as the best types of gravel for driveways. Marble chips, quarry process, and river rock are some of the best rocks for driveways, and crushed stone #3 and item #4 as the best stones for driveways.

What is slag used in cement?

Foamed slag has been used as a lightweight aggregate for Portland cement concrete. Granulated blast furnace slag has been used as a raw material for cement production and as an aggregate and insulating material. and granulated slag have also been used as sand blasting shot materials.

Can slag be used under concrete?

Blast furnace slag may be used in concrete.

What is the importance of slag?

Publisher Summary. Metallurgical slags play an important role in the extraction and refining of metals. They are formed when a flux material, added to or included in the charge, reacts with unwanted minerals during extraction or smelting, or with the products of the oxidation of unwanted solute elements during refining …

Is slag good for concrete?

The use of slag in concrete has several benefits, including reduced energy, reduced greenhouse gas emissions, and reduced use of raw materials. – Granulated blast-furnace slag (GBFS)—The glassy granular material formed when molten blast-furnace slag is rapidly chilled, as by immersion in water. …


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