Mica is a general name for a group of alumina silicate minerals. This kind of minerals has sheet shape construction and made from different physical and chemical composition. Mica is a member of sheet silicate mineral group including muscovite, vermiculite, biotite, phlogopite, lepidolite and natronite.
Muscovite is the most important and the most abundant sheet minerals. Sheet shape muscovite can found in pegmatite and flake form granite, pegmatite and schist. Lepidolite is formed in pegmatite enriched of lithium. Phlogopite reported as veins and mass in pyroxenites and magnesium skarn.
ZaminKav corp. with years of experience as an authority of mica production in Iran honored to produce the high quality of any grade of any member of mica’s group. ZaminKav Corp. in order to produce science, introduced this following website which is wide and worthy reference about Mica. Hope to be useful.
Talc, is a hydrous magnesium silicate. The mineral is generally discovered in the nature in metamorphic rocks. Talc is form by metasomatism kind of contact metamorphism and regional metamorphism in right conditions. The chemical composition of talc and other minerals along it contains: Serpentine, Chlorite, Anthophyllite, Termolite, Diopside, Dolomite and Calcite.
In contact metamorphism, intrusive bodies rich of magmatic solution meanwhile influence in carbonated rocks rick of magnesium (dolomite) cause form of magnesemia skarn. Talc is one of the most important magnesemia skarn and in mafic rocks, ultra mafic rocks and dolomites regional metamorphism, in low heat cause form of schist talc which is the most important of talc source. The most volume of talc is schist and serpentine rocks.
Most important talc usage
The most important of talc usage is: in paper-making 42%, in plastics 9.2%, in ceramics 21%, in paints 8.5%, in roofing 5.4%, in pharmaceutical 2%, in cosmetics 2% and even in rubber manufacturing, animal feed, pollution control, polish and agriculture.
Talc can be used in 3 phases of paper-making, filler, roughness control and coating. 42% of produced talc is used in paper-making and majority part of it is used as filler material. 2.7 billion ton of talc is used in paper-making, reported in 1994. In the US because of plentifulness of kaolinite, usage of kaolinite is more than talc in paper-making and unlike Europe.
The advantage of talc instead of kaolinite as filler in paper-making: improvement of softness, porosity, mate, abrasion and yellows index. Talc is used as paper coating because of its plate shape and well transparency. Using talc as coating leads several advantages in paper as follows; glossy, softness, reduce of friction and increase of printing quality. Choosing talc or kaolinite as coating depends on the price of these two mineral materials. More than 90% of used talc in paper-making in Northern America has been done in order to control of roughness and reduce of cohesion.
21% of produced talc in the world is used in kinds of ceramics. Having reasonable expansion and contraction factor, good diffusion coefficient and low prices are the factors that encourage people to use it in ceramics. In body of traditional ceramics the percentage of talc usage is 30-60%, in advanced ceramics is used special.
Static ceramics that used as electrical insulations is made from 10% of talc and 10% of barium carbonate cooked for 12-13 hrs. In 1349-1355 degrees. Cordierite ceramics made in 2 different ways, combination of 44% of pure talc, 41% of kaolin and 15% of aluminum oxide or, 50% of kaolin and 50% of enriched chlorite with magnesium.
2.9% of world produced talc used as filler in plastics. This happened because of talc shape, thermal resistance and plasticity. Due to increasing of mechanical resistance and raising the quality of surface (reducing scratches) will be added to polypropylene (PP). Prevention of obstruction and cohesion in plastics is the other usages of talc.
Nowadays talc competes titan oxide. About 8.5% of world produced talc used as filler and chromatic in paints industry. The most important properties of talc is: softness, good dispersion coefficient, being neutral facing solutions and low density.
The other talc usages are: cosmetics, baby powder, as reducer of friction coefficient, ink, firefighting, medicinal purposes and textiles.
ZaminKav corp. with years of experience as an authority of Talc production in Iran honored to produce the high quality of any grade of required Talc. ZaminKav Corp. in order to produce science, introduced this following website which is wide and worthy reference about Talc. Hope to be useful.
Perlite is a kind of volcanic stone with acidic composition into the middle limit that save a rare volume of water into its network. Perlite will expanded by 900 degrees of heat into 10-20 times of prime volume and its density will be 60 to 120 kg per cube meters. These proceed causes high lightness and porosity. The following property beside of hardness of perlite stone causing multiple use in industries.
As light aggregate in produce of lightweight blocks, as filtration in pharmaceutical, nutritious and beverage industries, as filler in paper-making, plastics, paints and ceramics, as slag catcher in melting metal industries, as soil softener and chemical fertilizer supplements in agricultural industries as plant roots well moisturizer in floriculture and greenhouse producing, to produce transplantations in non-soil agricultural industries, to sealing the drilling well in oil, tunneling and building industries, as abrasive in toothpaste production and the same in refineries, as tanks isolation in petrochemical Industries and as protection and prevention of high temperatures dropping in power plants and prevention of very low temperatures rising in kinds of cylinders and finally as eliminator of oil pollution in beaches, power plants or the manufactures who uses oil and Oil contaminated material and many other usages.
ZaminKav corp. with years of experience as an authority of perlite production in Iran honored to produce the high quality of any grade of required perlite. ZaminKav Corp. in order to produce science, introduced this following website which is wide and worthy reference about perlite. Hope to be useful.
Fluorine (fluorite) mineral, in CaF2 chemical formula is the most important Fluor mineral which could be achieved Fluor from that. This mineral could found in yellow, green, pink, blue, purple, colorless and sometimes black and it crystallized in cubic system. It is usually in semitransparent mode and has glassy satin. The density of fluorine is 18.3 and its hardness is 4.
This mineral generally fills the empty spaces between other minerals. In nature is observed as veins accompanied by calcite, quartz, barite, Celestine and various sulfides. Pure fluorine has 48.7% Fluor and 51.3% calcium.
ZaminKav corp. with years of experience as an authority of fluorine production in Iran honored to produce the high quality of any grade of fluorine with 50% to 90% of purity. ZaminKav Corp. in order to produce science, introduced this following website which is wide and worthy reference about fluorine. Hope to be useful.
Bentonite is made from weak bond of alumina and silica sheets that could be divided into thickness of 0.003 micrometers and 0.01 micrometers length in the aquatic environment. The electrostatic charge and easy dividing causes the wide spread in the water.
Bentonite have Na+Ca2 or +Mg2 exchangeable cations and the most ion-exchange capacity in the minerals except Zeolite. This feature affects on bentonite’s commercial properties and classified on this base. Sodium bentonite has high swelling ability and calcium bentonite has low swelling ability. Another basic different between these two minerals is that the sodium one is stable up to 752 Fahrenheit. Calcium bentonite reacts with sodium carbonate to increase its swelling property.
ZaminKav corp. with years of experience as an authority of bentonite production in Iran honored to produce the high quality of sodium and calcium bentonite.