What is Scoria?
What is Scoria
Scoria is a dark-colored, vesicular, extrusive igneous rock. The vesicles are a result of trapped gas within the melt at the time of solidification. It often forms as a frothy crust on the top of a lava flow or as material ejected from a volcanic vent and solidifying while airborne.
Scoria can be used for high-temperature insulation.
The quarry of Puna Pau on Rapa Nui/Easter Island was the source of a red coloured scoria which the Rapanui people used to carve the pukao (or topknots) for their distinctive moai statues, and to carve some moai from.
Grinding:
To the scoria,the best way is to grind it together with clicker and gypsum.
And the second : scoria grind alone ,and then mix the ground scoria with clinker and gypsum into cement.
third:scoria (slag) grind alone beforehand,again with grinding clinker,gypsum together.But because of the first kind of grinding technology is concentrated in the coarse powder,it just play a mixing role in the step.
Scoria Mineral Crusher
The total lands encumbered by mining activity will not include the total above acreage all at one time but will encumber only those lands reasonably needed for the existing scoria mining and will progress over a 10- to 15-year timeframe. Scoria removal
will occur in small incremental sections of approximately 10 acres in size, not to exceed 20 acres in any given year, for the purpose of using that scoria on adjacent roads needed for coal mining operations.