What is Volcanic Stone? What is the difference between volcanic stone and volcanic rock

Volcanic stone (commonly known as pumice or porous basalt) is a functional environmental protection material, is a volcanic eruption by volcanic glass, minerals and bubbles formed by the very precious porous stone, volcanic stone contains sodium, magnesium, aluminum, silicon, calcium, titanium, manganese, iron, nickel, cobalt and molybdenum and other dozens of minerals and trace elements, no radiation and has far-infrared magnetic waves, after the ruthless volcanic eruption, after tens of thousands of years, human beings are more and more discovering its preciousness. Our company has expanded its application fields to construction, water conservancy, grinding, filter materials, barbecue charcoal, landscaping, soilless cultivation, ornamental products and other fields, and plays an irreplaceable role in all walks of life!

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The eruption of the volcano along the river cools down and turns into stones of various shapes.

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Volcanic rocks (volcanic rocks or pumice rocks) are a kind of vitreous lava with dense pores formed by the rapid escape and expansion of gas in the inner void due to the rapid cooling of magma during volcanic eruption. Volcanic rocks, also known as effusive rocks, belong to a type of magmatic rocks (igneous rocks), which are formed by the condensation of magma after being ejected to the surface through a volcanic crater. Volcanic rock is formed by magma erupting from the surface and cooling and crystallization in the atmosphere and hydrosphere.

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Vitreous lava. Volcanic rock is a kind of vitreous lava with dense pores formed by the rapid overflow and expansion of internal gas due to the rapid decrease in pressure after the magma cools rapidly during the volcanic eruption. Its stomatal volume accounts for more than 50% of the volume of the rock.

It is called pumice because of its many pores, light weight, and ability to float on the surface of the water. It is characterized by high strength, heat preservation, heat insulation, sound absorption, fire resistance, acid and alkali resistance, corrosion resistance, and no pollution, no radioactivity, etc.

Appearance shape: no sharp grain, low resistance to water flow, not easy to block, uniform water distribution, rough surface, fast hanging film speed, microbial film is not easy to fall off when repeated rinsing.

Porosity: Volcanic rocks are naturally honeycomb porous, which is the best environment for the growth of colloids.

Mechanical strength: According to the national quality inspection department, practice has proved that it can withstand the hydraulic shear action of different strengths, and the service life is far longer than that of other filter media.

Density: The density is moderate, it is easy to suspend and do not run out of material during backwashing, which can save energy and reduce consumption.

Biochemical stability: Volcanic rock biological filter media is corrosion-resistant, inert, and does not participate in the biochemical reaction of biofilm in the environment.

Surface electrical and hydrophilic: The surface of the volcanic rock biological filter material has a positive charge, which is conducive to the sessile growth of microorganisms, strong hydrophilicity, and the amount of attached biofilm is large and fast.

Effect on biofilm activity: As a biofilm carrier, volcanic rock biological filter material is harmless and has no inhibitory effect on the immobilized microorganisms, and it has been proved in practice that it does not affect the activity of microorganisms.