Slag is the silicon dioxide and metal oxide mixture left over as a by-product of extracting metal from its ore during the smelting process. Once the metal is smelted out of its ore, the ore appears to be glassy. This glassy appearance is caused by the formation of slag on the ore’s surface during the smelting process.
What is slag in chemistry with example?
1. 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.
What is slag in chemistry formula?
The slag can generally be expressed by the formula FeSNa2S(O). Both reactions 9.5 and 9.6 are heterogeneous and endothermic in nature.
What exactly is slag?
Slag is a waste material that was created when iron was made using the Blast Furnace. It had very minimal use, and more slag was produced than actual iron. In the 1600s, most of the slag was thrown into the river, creating the Slag Pile.
What is slag in chemistry class 12?
Slag: The product obtained by the combination of gangue with flux is called slag. Concept: Extraction of Metals.
What is slag in chemistry class 11?
Slag is formed as a by-product during processes like smelting or other combustion and metallurgical processes. The gangue present is treated with flux to form the fusible slag. Slag is mainly the oxides of elements like sulphur, phosphorus, silicon, and aluminium.
What is slag in chemistry class 10?
Slag: When the molten metal in stirred with logs of green wood impurities get oxidised. These oxidised impurities formed over the surface of the molten metal is called slag.
What is slag and how it is formed?
slag, by-product formed in smelting, welding, and other metallurgical and combustion processes from impurities in the metals or ores being treated.Slag floats on the surface of the molten metal, protecting it from oxidation by the atmosphere and keeping it clean.
How slag is formed?
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.
What is slag and flux?
(i) Flux and slag
Flux is the material or substance that is added to molten metals to bond with impurities that can be readily removed whereas slag is the waste material that is removed. Fluxes are used during the refining of metals. examples are acid silica, basic lime, rosins etc.
How is slag used?
Slags are one of the most natural products of all.Due to its positive technical characteristics, LD slag is used all over the world in road and railway construction and for engineering. The most common use is as an aggregate in the manufacture of asphalt. It is also successfully used as an aggregate for concrete.
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 |
What mineral that produced slag?
Iron and steel slag, also known as ferrous slag, is produced by adding limestone (or dolomite), lime and silica sand to blast furnaces and steel furnaces to strip impurities from iron ore, scrap and other ferrous feed materials and to lower the heat requirements of the iron- and steelmaking processes.
What is slag Ncert?
* During metallurgy, ‘flux’ is added which combines with ‘gangue’ to form ‘slag’. Slag separates more easily from the ore than the gangue. This way, removal of gangue becomes easier. © NCERT.
What is blister copper definition?
Definition of blister copper
: metallic copper of a black blistered surface, being the product of converting copper matte and being about 98.5 to 99.5 per cent pure.
What is flux in metallurgy Class 12?
Flux is the substance added during the extraction of metals. On heating it reacts with the earthly impurities(gangue) to form fusible (molten) mass known as slag. They may be acidic or basic in nature. Acidic flux are is used to remove the basic impurities. For example silica.
What is slag and flux in metallurgy?
Hint: Flux is a substance which we add to molten metal to bond with impurities that can be removed afterwards, slag is a waste material which is removed. Fluxes are used during refining of metals and slag is impure residue.
How do you identify a slag?
Slag is one of the materials that is often confused for meteorites. This slag, however, will usually be porous or even bubbly which is a clue that it is not a real space rock. Meteorites, in some cases, may exhibit vesicles, but they are not porous or bubbly in appearance.
Is slag glass natural?
“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. Humans have been creating it since the late bronze age (1500 – 1000 BCE).
Is slag glass toxic?
Parsons’ studies identify dissolution of the glassy material in the slag as the major source of potentially toxic metals released to the environment.
What is slag fertilizer?
Basic slag was thought by many to be the best grassland fertiliser ever. Super Slag Basic is its modern day equivalent, rich in calcium, magnesium, phosphate and essential trace elements. Super Slag Basic is good for your land; it replaces the trace elements and minerals which basic slag used to provide.
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