Talc Stone
Afghanistan is considered one of the major Talc extracting countries, which exports about one million tons of Talc to American, European and Asian countries every year. Sixty million dollars have been invested in the Talc sector of Afghanistan and 20,000 people have been provided with employment in 47 factories and tens of mines. Talc is used in 180 items, the most important of which is used in medicine, paint, paper and cosmetics. We are currently producing high-quality Talc Stone / Powder and have the best Talc samples available to industries. Our Talc is the whitest available without the use of asbestos. Yaqubi Limited Company is a significant company that exports minerals from Afghanistan. The company's main exports are talc lumps and powder from the Pakistan-Afghanistan border region. This talc is of the highest quality and is in high demand around the world. It is widely used in a wide range of industries, including ceramics, paper, paint, cosmetics, and pharmaceuticals. We provide a variety of whiteness ratings that are ideal for industrial customers. We offer a wide range of soapstone grades.
Our client's satisfaction will be a gift to us. Yaqubi Limited Company believes that everyone should be able to obtain and enjoy the best products available. We were able to meet today's key business objectives, which included quality, honesty in business dealings, transportation, prompt and secure delivery, and, ultimately, customer satisfaction.
What is Talc?
The term "talc" has four distinct meanings:
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Talc is a mineral that is composed of hydrated magnesium silicate.
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Talc is a steatite or soapstone rock composed of varying proportions of the mineral talc, which is frequently combined with other minerals such as chlorite and carbonate.
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Talc is a powdered industrial raw material that is used in a variety of applications.
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Talc is a type of cosmetic powder. This is its most well-known application, but it is also one of the least consumed.
Geology and Occurrence
Talc deposits are always the result of hydrothermal activity transforming existing rocks. Hydrothermal water transports the components (MgO, SiO2, H2O) required for the transformation of the parent rock into talc. The size and geometry of the final deposit are determined by the parent rock's size and nature, as well as the intensity and scale of the phenomenon. A low to medium temperature and pressure metamorphism is the geological context required for such a transformation to occur. Tectonic movements are always important: earth movements allow hydrothermal fluid to penetrate the mother-rock, creating permeability that allows reactions within the rock mass to occur. The surrounding pressure determines the mineral's degree of platins, also known as lamellarity (low pressure/low lamellarity, high pressure/high lamellarity) either at the time of transformation or later on. The nature of the parent rock largely determines the type of mineralization. Talc deposits are classified based on the parent rock from which they are formed. Talc deposits are classified into four types: • Made from magnesium carbonates. This type of deposit, found in ancient metamorphosed carbonate sequences, accounts for more than half of global production. This talc is predominantly pure and white. • Originating from serpentines. This type of deposit accounts for approximately 20% of the world's talc supply. The crude ore is always grey here, but it can be upgraded (usually through flotation techniques) to improve mineralogy and whiteness. • Originating from alumina-silicate rocks These deposits account for about 10% of global output. They are sometimes found in conjunction with deposits of magnesium carbonate. Because of the presence of chlorite (another phyllosilicate), the crude ore is generally grey, but no upgrading is usually required because chlorite, like talc, is a functional mineral with benefits in a variety of industrial applications. Derived from sedimentary magnesium deposits. Talc is created through the direct transformation of magnesium clays. There are currently no deposits in this category that are being mined. • This wide range of origins and types naturally results in a wide range of ores and product grades, which differ in terms of mineralogical composition, color, and crystalline structure (micro-crystalline or lamellar).
Physical-Chemical Properties
Talc is a natural mineral with the molecular formula Mg3Si4 O10(OH)2 (molecular weight 379.26). Its elementary sheet is made up of a layer of magnesium-oxygen/hydroxyl octahedra sandwiched between two layers of tetrahedral silica, as shown in the opposite figure. The main surfaces of the elementary sheet, known as basal surfaces, lack hydroxyl groups and active ions, making talc both hydrophobic and inert. Depending on the deposit's formation conditions, the size of an individual talc platelet (a few thousand elementary sheets) can range from about 1 micron to more than 100 microns. The lamellarity of talc is determined by the size of individual platelets. Individual platelets in highly lamellar talc are large, whereas those in microcrystalline talc are small. Because the binding forces (known as Van de Waal's forces) linking one elementary sheet to its neighbors are very weak, the platelets slide apart at the slightest touch, giving talc its characteristic softness. Talc has no odor. It is not soluble in water, weak acids, or alkalis. Although talc has a strong affinity for certain organic chemicals, it has very little chemical reactivity in general. It has no explosive or flammable properties. Above 900°C, talc gradually loses its hydroxyl groups, and above 1050°C, it re-crystallizes into various enstatite forms (anhydrous magnesium silicate). The melting point of talc is 1500°C. Talc vary in their mineralogical composition, or the type and proportion of associated minerals present. Chlorite, which is structurally and chemically very similar to talc, is the most common mineral found with it. Dolomite and magnesite are also common. Talc differ in their degree of lamellarity, as we've seen. Talc is commonly thought to be white, but it can also be grey, green, blue, pink, or even black. Talc is essentially a collection of talc.
Organophilic properties
Talc is attracted to certain organic chemicals. As a result, it is organophilic. The position of the oxygen atoms on the surface of the talc platelet corresponds to the carbon bonds on the surface of the polypropylene crystal, which is a likely explanation for talc's affinity for polypropylene. Talc's organophilic properties are useful in a variety of applications, such as assisting polypropylene crystallization. Talc particles attract undesirable resin droplets, i.e. organic chemicals, in the pulp onto their surface during papermaking. This is referred to as pitch control. In body powder applications, perfume, which is also organic, is adsorbed and retained on the talc surface. Functions and Application Talc's five main properties distinguish it as a unique substance for industrial and domestic applications are as follows: Lamella ion (composed of platelets that slide off each other) suppleness (unctuous and non-abrasive) Chemical apathy Preference for organic chemicals Whiteness Talc is used as an anti-sticking, anti-caking, lubricant, carrier, thickener, strengthening filler, smooth filler, and adsorbent.
Anti-sticking agent
Talc is used in many industrial processes to keep two materials from sticking together. Mold talc powdering is widely used, for example, in tyre manufacturing and foundry applications. Talc is also used to enhance the performance of certain foods and conveyor belts. Similarly, chip boards are powdered to prevent them from sticking together while being stored.
Anti-caking agent
Talc is commonly used in animal feed. It wraps around each feed particle, creating a natural barrier that prevents moisture from escaping or entering the treated feed. Talc also increases material fluidity, which helps to keep equipment clean (by reducing bacteria proliferation), lowers energy consumption, reduces production stoppages, and makes the operator's job safer.
Lubricant
Talc, for example, is used as a lubricant in pharmaceuticals. As well as not reacting with active ingredients, it facilitates the ingestion of solid drugs (pills, powders, etc) (pills, powders, etc). Talc is also used to mould and demolish pills. It is widely used as a lubricant in dry material transport.
Carrier
Talc's chemical inertness is obviously appealing for carrier applications. Excipients (dry or moist) in pharmaceuticals and cosmetics are classic examples. Aside from its inertness, talc has the advantage of not promoting bacterial growth and of gradually releasing fragrances. Carriers are also important in applications like fertilizer and plant protection. When talc is added to active ingredients, the release is well-managed, allowing for the practical and safe handling of very small and very large amounts of active substances.
Thickener
Talc can affect the viscosity of water and solvent-based formulations. It increases covering power, improves flow, and prevents settling in paints, for example. It also improves the coating's adhesion and final mechanical properties. Talc allows paints with low viscosities to be formulated with significantly fewer organic solvents. Talc's use in the formulation of a variety of liquid products (paint, cosmetics, glues, and so on) also helps to control sedimentation rates during storage.
Strengthener
Talc is used to reinforce various resins, most notably polypropylene (PP). Even though the talc used in these applications is finely ground, it retains its lamellar structure. This gives the PP the best trade-off between rigidity and impact strength. Domestic appliances, food packaging films, and, most notably, automotive components such as bumpers and dashboards are among the applications. Talc is also used in rubber as a semi-reinforcing filler. Ceramics benefit from the properties of talc (household, construction, refractory and technical). It shortens the firing time and temperature, improves vitrification, and thus the ceramic's resistance. It also increases thermal shock resistance, which is especially important in catalytic exhausts.
Smooth filler
Talc's smoothness is appreciated in products that require suppleness and smoothness. Coloring pencils are an excellent example because they must be both tough and soft in order to produce a smooth and consistent result. Talc is also a key component of putties, particularly polyester putties, where it improves adhesion and standability.
Adsorbent
Talc's adsorption properties, or ability to adsorb only on the surface, are important in a variety of applications, particularly pitch control in papermaking, where talc is used to absorb sticky organic impurities (pitch, unwanted anions). Talc also improves the runnability of printing. As a paper filler, it improves smoothness and machinability while decreasing friction, abrasion, and porosity. It improves ink transfer, finish feel, and printing legibility in paper coating. Talc’s adsorption properties are also valuable in the treatment of waste water by the activated sludge method. Talc platelets, by providing an adequate support surface, actually "ballast" the bacteria used in such treatments, improving sedimentation and avoiding bacteria release in the final clean effluent.
Health and Safety
Health and Safety of Talc Talc is used in the production of a wide variety of products. Talc, best known as a body powder, is an important ingredient in a wide range of products we come into contact with on a daily basis, including paper, paints, plastics, rubber, pharmaceuticals, and even chewing gum. Consumers who use talc body powders or products containing talc have extremely low talc exposure levels when compared to workers who are exposed to talc dust during the mining or processing of talc ore. Talc powders may generate dust in an industrial setting if improperly handled or processed. The quantity and duration of inhalation, as with all dusts, determine the level of risk. The human lungs have a built-in mechanism for clearing inhaled particles. However, excessive exposure can overwhelm this, causing particles to accumulate in the lungs, a condition known as pneumoconiosis. Tobacco use reduces the lungs' clearance capacity significantly. Extensive research has demonstrated that talc has a "inert" dust effect rather than a toxic effect. Occupational exposure limits are legally mandated in the European Union, North America, Australia, and a number of other countries. To avoid any negative effects, workers should adhere to these limits. Rather than relying on dust masks, the preferred method for controlling occupational dust exposure is to reduce dust generation and release. EUROTALC members make safety information available to their customers. They are also eager to share their extensive experience in dust control and occupational health management with them.
Innovation
Talc Applications – Innovative and Sustainable Solutions Talcs are used in a variety of applications. In many cases, talc contributes to reducing the environmental impact of these applications in addition to performing a technical function. Continuous product development and research are carried out in close collaboration with downstream industries to meet the evolving societal and market needs
Talc in Paper
Reduces water consumption and waste water discharge. Talc adsorbs organic impurities (pitch, anions) in water, reducing the amount of fresh water required in the papermaking process. As a result, mills can operate in closed water circuits, lowering waste water output. Unlike cleaning chemicals, talc is a natural additive that ends up as a filler in the final paper product, avoiding the creation of another waste stream.
Talc in Plastics
Allows for the development of more environmentally friendly plastics. Plastics of various types are increasingly being replaced by talc-reinforced polypropylene, which is easily recyclable (PP). Talc increases the rigidity of PP, allowing the end product to be downgauged. Talc-reinforced PP, for example, is used in automotive applications to reduce overall vehicle weight, resulting in fuel savings. Furthermore, talc-reinforced PP oxidizes or decomposes, emitting water and CO2, leaving only environmentally safe and inert talc as a residue.
Talc in Ceramics
Contributes to the development of a new generation of ceramics. Toxic emissions are reduced by using automotive catalyst exhausts and diesel engine filters. Thermal shock resistance is provided by ceramic supports containing more than 30% talc. Talc aids in the reduction of potentially hazardous substances, such as toxic heavy metals, in the formulation of glazes in sanitaryware. The use of talc in kiln rollers has also aided in the development of new roller kiln technology, resulting in energy savings and a reduction in glasshouse gas emissions.
Talc in Agriculture
Improves the flowability of phytosanitary products and saves energy. Talc coats fertilizer pellets more effectively, saving hydrocarbon used as an adherent. Talc-coated fertilizer has a lower environmental impact and is less odorous because it requires less hydrocarbon content. As a result, it is better for the health of factory workers. Talc improves the fluidity of animal feeds. This results in less bacteria build-up in the circuits and fewer production halts, resulting in energy savings and a safer operator's job.
Talc in Rubber
Helps to improve rubber performance. Talc reduces the permeability of automotive hoses, lowering hydrocarbon evaporation rates and reducing toxic emissions and fuel odor. Talc powdering speeds up treadmilling cycles, lowering energy requirements.
Talc in Wastewater Treatment
Enhances the performance of activated sludge wastewater treatment units. Talc-based products help activated sludge wastewater treatment plants perform better (where bacteria are used to degrade waste). Talc particles act as ballast for bacteria flocs, improving sedimentation and effluent clarification. This produces high-quality effluent with no bacterial loss. Plants can be upgraded in this manner without the need for costly plant expansions. Unlike most chemicals used to clean wastewater, talc is a natural, environmentally inert mineral additive that does not reduce the sludge's fertilizing value.
Talc in Putties
Allows for a reduction in solvent content. Polyester putties typically contain 13% to 15% styrene to reduce viscosity. The addition of low oil-absorption talc allows formulators to reduce styrene content to meet European standards while maintaining the appropriate viscosity.
Talc in Coatings
Contributes to paint durability and VOC reduction. Talc's inertness improves adhesion and anticorrosion, extending the life of the paint. Talc's low viscosity properties enable coatings manufacturers to create low volatile organic compound (VOC) paints, reducing the amount applied and solvent emissions. This benefits both the environment and the users' health.
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