What is the density of slag?
The relative density (specific gravity) for ground granulated blast- furnace slag is in the range of 2.85 to 2.95. The bulk density varies from 1050 to 1375 kg/m3 (66 to 86 lb/ft3).
What is the composition of 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).
What is glass content in slag?
0.80 mm diameter of slag particles, the value of the glass. content is 94%, which is higher than the 91% content. obtained from water quenching. To obtain much higher. glass content, it is better to cool the molten BFS from a higher.
How much does slag cost?
Steel slag costs $25 to $39 per ton or $35 to $54 per yard, depending on the quantity ordered and size of stones. Steel slag costs $25 to $39 per ton or $35 to $54 per yard, depending on the quantity ordered and size of stones.
How much is blue slag glass worth?
Slag glass comes in many colors such as chocolate or caramel, purple, blue, pink, and red. Values for slag glass, particularly, kitchenwares and lampshades command values from $50 to $1500 with collectors. Get an online appraisal of your piece of slag glass from Dr.
Does slag glass glow?
It wasnt discovered till the 1990s, that slag glass is actually a mineral called obsidian. This Piece is such a beautiful display piece gleams in the sun and glows under uv light . Note slag/glass/mineral/rock has imperfections, may have cracks or bubbles but thats what makes it a piece of art.
Where is slag glass found?
Slag glass is commonly found in purple, less common in blue and brown and green. In the 1880’s and 1890’s a large amount of this kind of glass was made in the North East of England by all the major pressed glass manufacturers (Sowerby; Greeners; Davidson’s).
Does slag float in water?
Pumice is a light grey to yellowish colour and very light in weight so it floats, but the colour of your rock rules pumice out. Slag, on the other hand, can be very light in weight as Roger mentioned and is usually dark coloured with lots of pits.
How do you date slag glass?
The key to determining if a piece of glass is “true” slag or just a handsome example of pressed glass is to look for glass that is obviously and richly marbled rather than simply colored or streaked. Your caramel slag glass paneled lamp dates from the 1910s through the 1920s.
What is leaded slag glass?
Slag glass, also known as marble glass or malachite glass, is a type of opaque, streaked pressed glass. Production of slag glass originated in late-19th-century England, where glass manufacturers are thought to have added slag from iron-smelting… Among other uses, slag glass was a popular material for lampshades.
Where is Red slag glass from?
Slag glass gets its name from slag, or the byproduct of steel production. When iron ore is smelted in that process, the remaining residue is a glass-like, often glossy material that takes on different colors depending on the minerals and elements present in the iron.
How do you know if you are a slag?
Identification. Recognizing slag glass is easy due to the distinctive coloration. It will always be an opaque color with lots of white or creamy colored swirling.
Is all slag magnetic?
Slag is a byproduct of reducing ore to metal. Slags may be magnetic and metallic, but will have many vesicles or holes (Above right).
Is Obsidian a slag?
“When you think about it, it does look a lot like obsidian, which is volcanic glass. “Glass slag is similar to obsidian; it, too, consists mainly of silica dioxide. It’s formed by heating ores (rock) to high temperatures. It’s a human-made rock, but it’s not a new technique.