|Place of Origin:||China|
|Model Number:||on spec|
|Minimum Order Quantity:||1 ton|
|Delivery Time:||1 week|
|Payment Terms:||T/T, L/C, Western Union|
|Raw Material:||Vermiculite||State:||Powder Or Granular|
The name of the meteorite mineral comes from Latin, with the meaning of "worm-like" and "worm-like". When the vermiculite is suddenly heated to 200 to 300 ° C, it will worm-like peeling along the c-axis of its crystal, and thus it has its name. Vermiculite is a layered structure of magnesium-containing hydroaluminosilicate secondary metamorphic mineral. The ore is shaped like mica. It is usually formed by hydrothermal alteration or weathering of black (gold) mica, which is lost due to heat loss. When the water expands, it is curved, and its shape resembles that of leeches.
Vermiculite is a clay mineral similar to smectite and is a layered silicate. It is generally formed by hydrothermal alteration or weathering of biotite. It sometimes appears as a coarse black mica (this is the eclipse of the meteorite of the meteorite), and sometimes it becomes a soil. When the vermiculite is heated to 300 ° C, it can expand 20 times and bend. The meteorite at this time is a bit like a otter (commonly known as a grasshopper), so it has such a name. Vermiculite is generally brown, yellow, dark green, with oily luster, and becomes gray after heating. Vermiculite can be used as a building material, adsorbent, fireproof insulating material, mechanical lubricant, soil improver, etc., and has a wide range of uses.
Vermiculite can be divided into vermiculite and expanded vermiculite according to the stage, and can be divided into golden yellow vermiculite, silvery white vermiculite and milky white vermiculite according to color classification.
The volume of the vermiculite piece can be rapidly expanded by 6-20 times after high-temperature roasting, and the specific gravity after expansion is 60-180kg/m3, which has strong thermal insulation performance.
# Waste treatment: the cation exchange capacity (up to 1000 milliequivalents per kg) of vermiculite allows it to be used in fluid purification processes for waste water, chemical processing, and the pollution-control of air in mines and gases in industrial processes. In addition to its ion exchange properties, exfoliated vermiculite can retain liquids within the inter-laminar voids of the individual particles, as well as between the particles themselves.
At present, the application research of vermiculite in water treatment mainly focuses on removing ammonia nitrogen, heavy metal ions, phosphate, rare earth ions and organic pollutants. The vermiculite is used to remove pollutants in wastewater, and has low cost and strong adsorption capacity. Advantages of rich reserves and recyclability Λ Due to its flocculation, vermiculite can be processed into granules, flakes and powders, which is very convenient to apply.
Removal of ammonia nitrogen from water
Natural vermiculite has the characteristics of high porosity and large specific surface area.
Ammonia nitrogen has a strong selective ion exchange capacity and is often used for removal.
Ammonia nitrogen in wastewater and vermiculite as polar adsorbents are also an ideal biological carrier.
Removal of heavy metal ions
The adsorption column with vermiculite as adsorbent can be used for continuous adsorption of Cd2+, and the adsorption speed is fast, the adsorption capacity is large, and the saturated adsorption capacity of N a modified vermiculite can reach 1118 mo lökg; the meteorite is changed by 011 mo löL HC l After adsorption, the adsorption capacity of the acid-modified vermiculite decreased with the increase of HC l concentration; the adsorption capacity of the vermiculite modified by 011m o löL N aC l was significantly improved, and the saturated adsorption of vermiculite could be N aC l is regenerated several times and reused. Therefore, the N aC l solution can be used as a modification reagent for vermiculite or as a regeneration reagent for vermiculite.