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Mica

Commodity: Mica

Size: 10mesh, 15mesh, 20mesh, 40mesh, 60mesh, 100mesh, 200mesh, 325mesh etc

Bulk Density: 0.3-0.65g/cm3

Moisture: <1.5%

Impurity: <5

L.O.I: <6


Detailed Introduction


The mica group of sheet silicate (phyllosilicate) minerals includes several closely related materials having nearly perfect basal cleavage. All are monoclinic, with a tendency towards pseudohexagonal crystals, and are similar in chemical composition. The nearly perfect cleavage, which is the most prominent characteristic of mica, is explained by the hexagonal sheet-like arrangement of its atoms.About mica powder: Mica is a natural mineral composed of different proportions of potassium, aluminum, iron, water and magnesium. Mica is naturally occurring and is collected based on silicate minerals. It is formed into a thin plate or sheet structure, with different mineral compositions and common characteristics. Mica can maintain its elasticity and toughness even at high temperatures, which is why mica is most suitable for use in extreme humidity and temperature conditions. The mineral mica has an absorption range of 2% to 5%. Its refractive index is average, and the visible spectrum is 1.6. It has the ability to withstand and resist all chemicals, alkalis, gases, oils and acids.

 

Mica application

Mica is used in a variety of products ranging from drywalls, paints, fillers, especially in parts for automobiles, roofing and shingles, electronics etc. Also used in blush, lip products and eye products. Other applications include nail polish, body powder, paint, glass, clay, resin and more. In some cases, even if mica powder is applied to oil, clear cream or acrylic, etc., the collection will appear darker.

The leading use of dry-ground mica is in the joint compound for filling and finishing seams and blemishes in gypsum wallboard (drywall). The mica acts as a filler and extender, provides a smooth consistency, improves the workability of the compound, and provides resistance to cracking.

In the paint industry, ground mica is used as a pigment extender that also facilitates suspension, reduces chalking, prevents shrinking and shearing of the paint film, increases the resistance of the paint film to water penetration and weathering and brightens the tone of colored pigments. Mica also promotes paint adhesion in aqueous and oleoresinous formulations.

Mica is used in the well-drilling industry as an additive to drilling fluids. The coarsely ground mica flakes help prevent the loss of circulation by sealing porous sections of the drill hole. Well drilling muds accounted for 15% of dry-ground mica use. The plastics industry used dry-ground mica as an extender and filler, especially in parts for automobiles as lightweight insulation to suppress sound and vibration. Mica is used in plastic automobile fascia and fenders as a reinforcing material, providing improved mechanical properties and increased dimensional stability, stiffness, and strength.

As a rubber additive, mica reduces gas permeation and improves resiliency.

Mica is used in the production of rolled roofing and asphalt shingles, where it serves as a surface coating to prevent sticking of adjacent surfaces. The coating is not absorbed by freshly manufactured roofing because mica's platy structure is unaffected by the acid in asphalt or by weather conditions. Mica is used in decorative coatings on wallpaper, concrete, stucco, and tile surfaces. It also is used as an ingredient in flux coatings on welding rods, in some special greases, and as coatings for core and mold release compounds, facing agents, and mold washes in foundry applications. As sound-absorbing insulation for coatings and polymer systems; in reinforcing additives for polymers to increase strength and stiffness and to improve stability to heat, chemicals, and ultraviolet (UV) radiation; in heat shields and temperature insulation; in industrial coating additive to decrease the permeability of moisture and hydrocarbons.

Mica Chemical Composition

SiO2: 44-48%

Al2O3: 21-35%

Fe2O3: 2-6%

MgO: 0.4-0.9%

TiO2: 0.6-1.1%

K2O: 7-12%

Na2O: 0.4-0.9%

Mica Powder characteristics

Since mica is composed of different minerals, it has many characteristics.

Physics-Mica can be split into thin slices along it. It is translucent, and the separated flakes are colorless.

Chemistry-Mica is composed of different minerals, such as iron, magnesium, potassium, lithium, sodium fluoride and other elements. It is resistant to chemicals, alkalis, oils, water and other solvents.

Electricity-Mica is exclusive in terms of electrical performance. head. It has huge dielectric power, capacitance stability, uniform dielectric stability, lower power loss, higher Q factor, lower temperature coefficient and higher resistance.

Thermal conductivity-Mica is non-flammable, refractory, non-flammable and fireproof. It can withstand high temperatures up to 1000 degrees Celsius.

Mechanical-Mica has high tensile strength, toughness, flexibility and elasticity.

Mica Powder Manufacturers

We are mica powder manufacturers, providing some of the best natural mica powders, including burgundy, pink, yellow, brown, purple, blue, black, orange, gold, green, iridescent, pearl, bronze and gray mica powders. All these mica powders are unique mica products that can be used in various creative and cosmetic applications.

Packing: 25kg, 500kg, 520kg or 700kg bags.

Quantity: 12-15Mt/20'GP, 20-27Mt/40'HQ.

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