MICA

In Its Natural Form

About Mica

IT IS A SHINY SILICATE MINERAL WITH A LAYERED STRUCTURE FOUND AS SANDWICH IN GRANITE AND OTHER ROCKS, OR AS CRYSTALS. IT IS USED AS A THERMAL OR ELECTRICAL INSULATOR.

Mica, a collection of hydrous potassium, aluminium silicate minerals. It is typically found as massively crystalline material in sheet, flaky or layer structures. It is clear with a pearly lustre on cleavage faces, often having a sparkly look in rocks. Its outstanding physical characteristic is that individual mica crystals can easily be split into extremely thin elastic plates.

Mica is natural mineral and very good non conductor and heat resistance insulator.

Mica has the unique characteristic of excellent dielectric strength, and capacitance stability, low power loss (high Q factor ), high electrical resistivity and low temperature coefficient and capacitance. It is noted for its resistance to arc and corona discharge with no permanent injury and has little or no effect when exposed to electronic radiation.

Mica is incombustible and non-flammable and can resist temperatures up to 900*C (1650*F) depending on the type of mica. It has low heat conductivity, excellent thermal stability and may be exposed to high temperatures without noticeable effect.

Mica is relatively soft and can be hand cut, machined or dye-punched. It is flexible, elastic and tough, having high tensile strength. It can withstand great mechanical pressure perpendicular to plane but the lamination has cleavage and can be easily split into very thin leaves.

Mainly found mica minerals are:
Muscovite, Phlogopite, Biotite, Margarite, Lepidolite, Paragonite and Clintonite.

As per chemical and atom structure, most common two grades of Mica used commercially in variety of application:
  • Muscovite Mica
  • Phlogopite Mica

Mica BLOCKS

Our muscovite mica is of ruby and green color, with a clear or clear/slightly stained grade, available as dressed sheets in a variety of sizes.


Our mica block is knife or scissor dressed sheets of irregular size with a minimum thickness of 18mm. The mica sheets are available in a number of standard sizes as well as custom sizes as required, and are supplied in both natural (random) thickness, as well as calibrated thickness per your requirement.

While we currently focus primarily on mica block, we are open to custom requirements for other processed natural mica products, including mica thins, mica films, and mica splittings.

MUSCOVITE/ PHLOGOPITE

Block mica is knife-dressed, trimeed or untrimmed to grade size, has a thickness of not less than 0.20mm and minimum usable area is generally 2.5sq.cm

Muscovite: Mica are refer as common name Mica. It’s found in variety of colours – colourless, Ruby, Light Green, Pale Green, Light Yellow as pergeological origin.
Muscovite Mica are widely used as insulators inelectronic, electrical and thermal equipment.

Gauge glass, windows, Heating elements, Arc Shields, capacitors, decorative panels, arts & crafts, insulation in electric motors, armatures, coillnsulation, and other parts.

Black Mica widely used to fabricate Mica parts as well other form of mica, splittings, dusted loose, etc as per customer requirements.

Muscovite Mica is able to withstand at temperatures upto 550C (1022F)

World best quality Muscovite Block Mica resources available in India, at Jharkhand State.

,strong>Phlogopite: Phlogopite Mica is alo called Amber Mica as colour refer to Amber, Light or Deep Brown, Black and semi transparent to translucent in opacity.

Its brittle and flexible in very thin layers. Phlogopite Mica block are often used on high temperature applications. It’s used as insulators in electronic, electrical and thermal equipment. Heating elements, Arc Shields, decorative panels, Arts & Crafts, Insulation and other parts.

Phlogopite Block Mica used to fabricate Mica parts as well other form of mica, splittings, etc as per customer reqirements.

Phlogopite Mica is able to withstand at temperatures upto & above 700C (1300F)

Major resources of phlogopite mica is presently in medagascar, India, Sri Lanka and African Country.

Mica SPLITTINGS

Muscovite/Phlogopite Splittings are medium quality mica layers with a maximum thickness of single layer 0.03mm
AK Corporation offer superior quality Mica splitting as per customer requirements. Mica splittings divided into three products category : Book-Form, Dusted Loose and Loose. Mica Splitting are used to manufacture micanite, which is used as an electrical insulator, arts and crafts etc.

Book Form: Book Form Mica splittings as the name appears like a book because of the uniform sizes of all the mica pieces. To obtain such forms of splitting. Mica block splits into thin layers and stacks layers by layers.
Availability:
Muscovite Mica – size no : 3, 4, 5, 5.5 Phlogopite Mica – size no : 3, 4, 5, 5.5

Dusted Loose: Dusted Mica loose splittings are not uniform in shape. Its spilt from mica block and dusted with mica powder for loose form. The sizes of mica and thickness are maintained in tolerance.
Availability:
Muscovite Mica – size no : 3, 4, 5, 5.5 & 6 Phlogopite Mica – size no : 3, 4, 5, 5.5, 6 & 7

LOOSE: This types of Mica Loose Splittings are not uniform in shape. Loose formsplit from Mica block of desire sizes and grading. The sizes of mica and thickness are maintained in tolerance as per customer specifications. .
Availability:
Muscovite Mica – Grade No : 6-1st, 6-2nd, 6-3rd, 6-4th Phlogopite Mica – size no : 5, 5.5, 6 & 7

Mica SHIELDS

Mica Strips & Discs
Natural Mica Shield are made from High quality Natural Muscavite Ruby Mica or green Muscovite Mica. Specially for used in visual liquid level gauges to shield the glass surface from corrosive environment.
Sight glasses in boilers are exposed to harsh thermal, mechanical and chemical operating conditions. At higher temperature and pressure this condition interact aggressively on the surface of Glasses. This interactive not only lead to tarnishing glass but also reduce strength of sight glasses and may lead to dangerous failure.
Natural Mica has high heat resistance and transparent, optical clear flexible, flat and unbreakable. In addition, mica is resistance to shock, unaffected of transparency by change of temperature and action of vapours. Therefor Mica is used as protection of Glass exposed to the harsh environment.

Mica Strips:
Mica Strips are made from high grade Muscovite Ruby or light green Mica plate. AK Corporature manufacture mica strips for gauge glass in wide range sizes.
Mica strips shield supplied in require length sizes, and thickness as per specification.
Standard Thickness:
0.10 – 0.15mm
0.15 – 0.20mm
0.20 – 0.25mm
0.25 – 0.35mm

Mica Disc: AK Corporation exclusively manufacture circular mica disc in high quality. Natural Mica as per buyers specification. Mica Disc are made by machined or die stamping followed by specifiprocess.
Standard Thickness: 0.10 to 0.35mm
Diameter: 10mm to 300mm

CONDENSOR MICA
MUSCOVITE

Mica has an average dielectric constant of 7, which makes it one of the most dependable types of insulators for all types of electronic applications. Mica having a power factor of 0.040 percent or lower is used in tuning circuits and high frequency condensers.

Condensers Mica Plates are stamped from high quality Muscovite mica, usually Ruby ‘A’ quality and above grade Mica having thickness generally less than 2 mills. These films are used in mica capacitors.

Packaging: Paper Wrapped stacked in 100Gram – 500 Grams packed. Finally packed in secured boxes of desire quantity.

BACKING
MICA PLATE

Small cut-die stamped Natural muscovite mica are effectively used as backing plate on both top and bottom sides or separator of mica capacitors to give mechanical potency and inflexibility.

Backing Mica plate fabricated as per customer drawing and specification. Thickness and dimensions of Backing mica plate are defined as per capacitor design.

FABRICATED MICA

Natural Mica have the perfect dielectric properties with outstanding features of low leakages and higher stability of physical properties under increasing temperature, high insulating strength, low rate of solar impurities and reasonable admittance factor. Because of these outstanding features mica is most suited for use in thermionic valve bridges, cathode ray tube assembles, condenser plates, as insulator in domestic heating elements, stove plates and other parts in space, aviation electrical and electronics industries. In almost all these applications, mica is die-punched and used as such in required thichkness.

AK Corporation offer a wide variety of fabricated mica, parts, washers, trimmer parts, condenser plates for mica capacitors and specific designs for custom built applications. Our in-house and tools facilities equipped with latest machinery and dedicated design team are able to produce any kinds of fabricated parts in our works.

MICA SCRAP

Mica scrap is raw of mica minerals received from the minces. Mica scrap distinguished in size range having an area between ½ - 1 ½ sq inch. Mica scrap manual sorted to removing dust, stone and biotte particles ensuring high quality of the scrap. We do supply mica flakes originating from one mice only or one limited group of mine only or one limited group of mines in each consignment.

Mica scraps can be classified into different categories based uplon temperatures, size and purity requirements. There are two categories into which mica scrap is generally classified.

  •  Tested ruby mica scrap that withstand high temperature upto 900C and is good for calcination.
  •  Untested white mica scrap that do not withstand high temperatures as ruby mica and is not as good for calcinations.

Application: Mica scrap is mainly used for the manufacturing of mica paper and re constituted mica plates. It is also used as raw material for the manufacture of mica flakes and mica powder.

Packaging: Mica scrap shall be packed in woven polyethylene bags and marked information of the contents. Customised packaging in small or bulk bag to handle logistics and as per application.

MICA FLAKES
MUSCOVITE

Mica flakes is mica scrap ground into sizes ranging from 2 mesh to 30 mesh. This material is prepared mainly by the means of crushing machine in which the mica breaks till the required size achieved and the material passess out from graded sieves. It can be reduced to very small thin particles having diameter to thickness ratio as high as 25 to 1. It can therefore be transformed into coarse, medium and fine variaties of flakes for used in wide commercial applications.
Grading Mesh Sizes: 2Mesh, 10Mesh, 16Mesh
Grading Aperture Sizes: 5 – 3.5mm, 2.8 – 1.8mm, 1.6 – 1.2mm

MICA POWDER

Mica powder produce by grinding method. It may be either by a wet or dry process, with reduction to micron size usually by jet/pulveriser milling. Ground mica is used as a functional filler and reinforcement material in points, plastics, rubbers, sealants, gypsum joint compounds and gypsum wallboard, oil well drilling fluids, cosmetics and numerous other applications.

Grading Mesh Sizes: 30Mesh, 60Mesh, 100Mesh, 325Mesh
Grading Micron Sizes: 355, 250, 150, 40

Natural Mica

Mica in its natural form is one of the most versatile materials, with a wide range of applications.


Mica is sourced from our own mines, and processed by skilled technicians in India and Africa, which gives us greater control over the consistency /volume of supply, quality control of our source material, and ethical sourcing standards.

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