How much does blast furnace slag cost?
Pelletized slag is generally used for lightweight aggregate but can be ground into material similar to GGBFS. Actual prices per ton ranged in 2019 from a few cents for some steel slags at a few locations to about $120 or more for some GGBFS.
What is ground granulated blast furnace slag used for?
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.
How much is a ton of slag steel?
about 0.25 to 0.30 metric tons
For typical iron ore grades (60 to 66 percent iron), blast furnace slag output will be about 0.25 to 0.30 metric tons of slag per ton of crude iron produced. Steel furnace slag production, after removal of entrained metal, will be about 10 to 15 percent of the crude steel output.
What are the properties of slag?
Steel slag aggregates are highly angular in shape and have rough surface texture. They have high bulk specific gravity and moderate water absorption (less than 3 percent)….User Guidelines for Waste and Byproduct Materials in Pavement Construction.
| Property | Value |
|---|---|
| Specific Gravity > | 3.2 – 3.6 |
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.
What do steel mills do with slag?
Slag from steel mills in ferrous smelting is designed to minimize iron loss, which gives out the significant amount of iron, following by oxides of calcium, silicon, magnesium, and aluminium.
What are the properties of blast furnace slag cement?
Properties of Blast-Furnace Slag Cement
| Properties | Values |
|---|---|
| Density (g/cm3) | 3.04 |
| Specific Surface Area (cm2/g) | 4050 |
| Setting Time | |
| Initial Setting | 60min |
What is GBS cement?
Primarily ground into a cement replacement known as ground granulated blast furnace slag (GGBS) this is used in ready-mixed and precast concrete and masonry, floor levelling compounds and high temperature resistant building products.
What is the difference between blast furnace slag and steel slag?
BF slag results from smelting iron ore, coke, and fluxes during the operations of extracting iron from the iron ore. Steel slag is formed during refining operations converting crude iron into steel by combining fluxes with the nonferrous oxides and other unwanted elements in the raw materials under molten state.
How many types of slag are there?
The main types of slags that are generated from the iron and steelmaking industries are classified as follow:(i)blast-furnace slag (ironmaking slag),(ii)steel-furnace slag,(a)basic-oxygen-furnace (BOF) slag,(b)electric-arc-furnace (EAF) slag,(c)ladle slag.
What are the different types of slag?
There are three types of slag: ferrous, ferroalloy, non-ferrous slags, which are produced through different smelting processes.
Is slag cheaper than cement?
Slag is similar to fly ash in that it is finer than standard Portland cement and is also cheaper as it is a process byproduct. It is is produced by the steel production industry.
What is ground slag used for?
Applications. GGBFS is typically used in activation of granular pavement materials and as a cementitious material in the manufacture of concrete, particularly where resistance to aggressive ground, water and aggressive environmental conditions are present.
What is the difference between blast-furnace slag and steel slag?
What is the density of slag?
The density of the synthetic coal slag studied is in the range of ∼2.4 g/cm3 for the temperature range of 1200–1600 °C, in both oxidizing and reducing conditions.
What is blast furnace slag cement?
Slag cement is a hydraulic cement formed when granulated blast furnace slag (GGBFS) is ground to suitable fineness and is used to replace a portion of portland cement. It is a recovered industrial by-product of an iron blast furnace.
What is the main use of slag?
Primary characteristics and applications of iron and steel slag
| Applications | ||
|---|---|---|
| Steelmaking slag | Converter slag, electric arc furnace slag | Aggregate for asphalt concrete |
| Base course material | ||
| Material for civil engineering works, ground improvement material (Material for sand compaction piles) | ||
| Raw material for cement clinker |
Where can you buy basic slag?
You can often find both gypsum and slag in quantity at local garden centers and farm suppliers, very cheap.
Can slag be used for anything?
Ferrous slag is currently underutilized. Although the construction industry does use some slag as an aggregate, most is simply discarded. However, slag could be used to treat acid soils or acid mine drainage.
Is fly ash better than slag?
Another difference between slag and fly ash is that while fly ash will rarely surpass 35% of the cement content, slag can substitute 50% of the cement content, or even higher for different applications. This contributes to the large cost savings from slag cement.
How is ground granulated blast furnace slag made?
Ground-granulated blast-furnace slag (GGBS or GGBFS) is obtained by quenching molten iron slag (a by-product of iron and steel-making) from a blast furnace in water or steam, to produce a glassy, granular product that is then dried and ground into a fine powder.
What is basic slag used for?
Basic slag, which consists of Ca, Al and other metal oxides, is an alkaline by-product of steelmaking or a residue of incineration processes. It can be used as a soil additive to render metals less soluble in contaminated soils by precipitation and adsorption on the surface of metal oxides (Negim et al.
What does basic slag mean?
Definition of basic slag chiefly British. : a slag low in silica and high in base-forming oxides that is used in the basic process of steelmaking and that is subsequently useful as a fertilizer.
What is the chemical name for slag?
The primary components of iron and steel slag are limestone (CaO) and silica (SiO2). Other components of blast furnace slag include alumina (Alsub>2O3) and magnesium oxide (MgO), as well as a small amount of sulfur (S), while steelmaking slag contains iron oxide (FeO) and magnesium oxide (MgO).