Basic Info.
Application
Well Drilling, Decorations, Cosmetics, Fire Protection, Electric Welding Rod, Coating, Painting, Rubber, Plastics
Transport Package
50kg/Bag
Product Description
Feature & application of mica
Brief Introduction
Mica is the generic name of the layer-structured aluminum-silicate, which consists of potassium, magnesium, aluminum, iron, lithium. It usually appears in six-square like or diamond-shaped columnar crystal, shaped in plate or sheet.
According to the differences of its chemical elements and optical characteristics, we can classify mica ore into three categories: muscovite-sericites type, phlogopite-biotite type and lithionite-lepidomelane type. The most common minerals in the mica group are: muscovite, sericite, biotite, phlogopite and lithionite.
Muscovite looks in transparent or in light color, while biotite shows in black, dark brown, or dark green. Phlogopite looks in gold, brown, dark green or transparent, while lithionite shows in light purple, rose pink or grey.
Characteristics of Mica:
1. Physical & Chemical Properties:
Mica has the gloss of glass; its cleavage surface shows pearly luster. Its Mons' hardness scale is 2-3.5, and proportion is 2.7-3.5. The color of mica changes according to its chemical elements, if it contains chromium, it shows in green, while contains lithium, shows in rose pink.
2. Optical Properties
The thickness of mica 's pairs of reflecting surfaces is only one fourth of the wavelength of UV light, which causes mutual interference when UV light getting through mica, therefore, mica can block the UV light. Additionally, the layer of mica's directional distribution made it has excellent lightproof performance.
3. Electrical Properties
insulation strength:159-317kV/mm
resistivity:1014-1015 Ω·cm
surface resistivity:1011-1012Ω·cm
dielectric loss angle:tan δ=0.001-0.08(50Hz)
The prominent property of mica is its dielectric insulation. The performance of its insulating property, which decides mica playing an important role in electric industry.
4.Heat Resistance & Stability
When heated up to 100-600 ºC,the elasticity and surface features of muscovite will not be affected. After being heated up to 700-800ºC, muscovite will get dehydrated and crispy, the dielectric performance will be changed; while heated up to 1050ºC, its structure will get damaged.
Phlogopite has a better dielectric performance than muscovite during the temperature 700ºC.
Mica will not affect to acid-alkali in room temperature, even will melt in high acid liquids. But it will get decomposed in boiling acid liquids over a long period of time.
Characteristics of Mica:
Mica, with the characteristics of high electrical insulation, which can endure high temperature and its dramatic changes, also maintains the feature of anti-acid & alkali corrosion, elasticity & toughness, processes excellent heat & sound insulation and low thermal conductivity.
Based on the unique features above, mica is wildly applied to the wireless industry, aviation, motor manufacturing, building materials & paints, fire-fighting & fire extinguisher, welding rods industries, also used in chemical industries such as, plastics, ceramics, dielectrics, paper-making, asphalt paper, cosmetics and pearlescent pigment etc.
Processed mica powder possesses good flowability & absorbability. The most widely-used mica is muscovite and followed with the phlogopite in current industry.
The Current Applications of Mica
1. On Insolation Materials
Mica played an important role in electric industry for its good dielectric properties since 19th century. Especially in the field of dielectric material, electric motor manufacturing, electric capacitor, potting material, fireproof cable, mica goods and fine ceramics.
2. On Plastics Industry
Mica powder used as enhanced fillings for mica sheet, which can enhance the property of mica sheet, improve the slice mica's high diameter/thickness ratio, strengthen the tensile & bending strength of plastic, stabilize plastic's shape, enhance its creep resistance and flatness, decrease deformation under high temperature, prevent plastic's curling, block the permeation of liquid & gas, improve the electric insulation of plastics.
3.On Paper-making Industry
Mica is an excellent filling material in paper-making industry. The paper added the mica powder, has features of brighter in color, higher UV resistance, less yellowing in long preservation, not easy to crack, better smoothness & tightness.
Coated paper, added with mica powder, has better degree of whiteness, smoothness, ink glossiness than clay coated paper.
4.On Coatings Industry
When mica powder added in coatings, it can improve coatings' abilities of dispersion, heat & frost resistance, water resistance, making coating processing more smooth.
The mica powder can reflect the UV light, and absorb ions of pigment into crystal lattice layer, therefor, construction coating materials, which filled with mica powder, will not fade in color.
5. On Paints Industry
When paints added with mica powder, enhanced paint's wash ability, adhesion, corrosion resistance, which can extend the life span of outer layer of the paint.
Mica powder can replace the relatively expensive titanium dioxide partly or fully, which can reduce the costs of paint products, improve economic efficiency. In addition, mica powder can block the subsidence of pigment in container during preservation, it can also make the mixture well done in pigment application.
6. On Ceramics
Mica is an important raw material for ceramic industry, melting in low temperature that helps to reduce the ceramic burning temperature. Mica's hardness is lower than quartz and feldspar, which can reduce energy consumption in raw material crushing and grinding, thus, making the cost down and resource saving. Mica can easily response with glaze, which can improve the quality of ceramic products.
7. On Cosmetics Field
Fine grinding mica powder has features of good dispersity, delicate texture, elasticity, high whiteness, nontoxic, it also has beautiful luster, and can well mixed with water and glycerol, therefore, it becomes the best choice for cream, ointment frost and powder's fillings.
Especially sunscreen added with mica powder, can enhance UV resistance of sunscreen due to the unique flaky structure of mica.
8. On Building Materials
Mica powder replaced asbestos in plaster board's cementing material, not only decreasing the pollutions, meeting current people's needs for environment protection, but also increasing plaster board's extensity & color, improving the sliding operation performance, moreover, decreasing gypsum's cracking.
In addition, mica powder is the important cementing material for cement board, it can also have applied for shipbuilding composite plate, such as calcium silicate refractory plate.
9. Others Fields
Pearlescent pigment added with mica powder, compares with basic lead carbonate pigment, it has features of lighter proportion, easier to disperse, nontoxic and more stabilize in performance. Consequently, Pearlescent pigment has already replaced the basic lead carbonated pigment, and been widely used in food container, children's toy and cosmetics fields.
The double-layered burned composite material, which been mixed with mica powder and glass powder, possesses features of warm preservation, sound insulation and high intensity, becoming a new economical material in modern construction.
Mica added spraying material can strengthen shock absorbing, which bring new thoughts for high-end steel plate.
Address:
17f, Huayu Commercial Building, East Renmin Rd., Korla, Bayingolin, Xinjiang, China
Business Type:
Manufacturer/Factory
Business Range:
Agriculture & Food, Auto, Motorcycle Parts & Accessories, Chemicals, Computer Products, Construction & Decoration, Electrical & Electronics, Metallurgy, Mineral & Energy
Management System Certification:
ISO 9001
Company Introduction:
Xinjiang Yuli Xinlong Vermiculite Co., Ltd. Was founded in 1999 and registered capital of RMB 30 million Yuan. It is an enterprise based on vermiculite, mica ore, and integrated mining, processing, sales and R&D as a whole. After optimizing all resources with continuous efforts in the past years, our company has been developed into a professional enterprise in vermiculite & mica fields and becomes a prestigious enterprise of this field. Our employees are about 200, including 45 professional technicians.
The vermiculite mine of our company with an estimated reserve of 100 million ton and a discovered deposit of 14.8 million tons in the Qieganbulake No. 2 Ore Body, which is the largest in China and the second-largest in the world, with the advantages of large ore reserve (95% of China′s reserve), high grade of raw material and easy mining. Advanced technology and production line enable us a good annual production capacity of 120, 000 MTs vermiculite concentrate and 30, 000 m exfoliated vermiculite and 30, 000 mica concentrate. Our most competitive product is vermiculite concentrate of all kind of sizes, which is scale-shaped flacks. We acquired Import & Export License, which enabled us selling our products all over the world. Our leading markets are North America, Europe, Australia, follows as Singapore, Japan, South Korea, Hong Kong, Taiwan, Russia, etc. As a key member of the World Vermiculite Association, our products share a leading place in this filed.
Aiming at sci-tech as its lead, management as its base, market as its direction, benefits as its center, through assets reorganization, technical modification and strengthening management, the company has achieved both good economic benefit and social benefit. Xinlong Vermiculite has already become the synonymous of Chinese vermiculite. The company has successively acquired various certificates and honors including Good Faith Taxpayer, Contract Trustworthy Enterprise, Outstanding Small-and-Medium-Size Enterprise, Advanced Export Enterprise, etc.
In the future development, the company will seize the opportunities, challenge all difficulties, manage firmly and make innovation practically in line with the principals of being based on resource, developing local area and advancing towards the world, to make the vermiculite industry larger and stronger. At the same time, keeping uphold the customer-oriented business philosophy, the company is to win customers′ satisfaction and trust by high quality products and good service.