talk taşı
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.
Talk nedir?
"Talk" teriminin dört farklı anlamı vardır:
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Talk, hidratlı madan oluşan bir mineraldir.gnezyum silikat.
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Talk, sıklıkla klorit gibi diğer minerallerle birleştirilen talk mineralinin değişen oranlarından oluşan bir steatit veya sabuntaşı kayadır.ve karbonat.
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Talk, çeşitli uygulamalarda kullanılan toz haline getirilmiş bir endüstriyel hammaddedir.
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Talk, bir tür kozmetik tozudur. Bu en bilinen uygulamasıdır, ancak aynı zamanda en az tüketilen uygulamalardan biridir.
Jeoloji ve Oluşum
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).
Fiziksel-Kimyasal Özellikler
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.
Organofilik özellikler
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.
Yapışma önleyici ajan
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.
Topaklanma önleyici madde
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.
yağlayıcı
Örneğin talk, farmasötiklerde yağlayıcı olarak kullanılır. Etken maddelerle reaksiyona girmediği gibi katı ilaçların (hap, toz vb.) (hap, toz vb.) alımını kolaylaştırır. Talk ayrıca hapları kalıplamak ve yok etmek için de kullanılır. Kuru malzeme taşımacılığında yağlayıcı olarak yaygın olarak kullanılır.
Taşıyıcı
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.
kalınlaştırıcı
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.
Güçlendirici
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.
Pürüzsüz dolgu
Talk'ın pürüzsüzlüğü, yumuşaklık ve pürüzsüzlük istenen ürünlerde beğenilmektedir. Boya kalemleri mükemmel bir örnektir çünkü pürüzsüz ve tutarlı bir sonuç elde etmek için hem sert hem de yumuşak olmaları gerekir. Talk aynı zamanda macunların, özellikle yapışmayı ve dayanabilirliği iyileştirdiği polyester macunların önemli bir bileşenidir.
adsorban
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.
Sağlık ve Güvenlik
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.
yenilik
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
Kağıtta Talk
Su tüketimini ve atık su deşarjını azaltır. Talk, sudaki organik safsızlıkları (zift, anyonlar) adsorbe ederek kağıt yapım sürecinde gereken tatlı su miktarını azaltır. Sonuç olarak, değirmenler kapalı su devrelerinde çalışarak atık su çıkışını azaltabilir. Temizlik kimyasallarının aksine talk, nihai kağıt ürününde dolgu maddesi olarak son bulan ve başka bir atık akışının oluşmasını önleyen doğal bir katkı maddesidir.
Plastiklerde Talk
Daha çevre dostu plastiklerin geliştirilmesine olanak sağlar. Çeşitli tiplerdeki plastiklerin yerini, kolaylıkla geri dönüştürülebilen (PP) talkla güçlendirilmiş polipropilen alıyor. Talk, PP'nin sertliğini artırarak son ürünün ölçüsünün düşürülmesine izin verir. Örneğin, talk ile güçlendirilmiş PP, otomotiv uygulamalarında toplam araç ağırlığını azaltmak için kullanılır ve bu da yakıt tasarrufu sağlar. Ayrıca, talk ile güçlendirilmiş PP oksitlenir veya ayrışır, su ve CO2 yayar, geriye sadece çevre açısından güvenli ve inert talk kalıntısı kalır.
Seramikte Talk
Yeni nesil seramiğin gelişimine katkı sağlar. Otomotiv katalizör egzozları ve dizel motor filtreleri kullanılarak toksik emisyonlar azaltılır. Termal şok direnci, %30'dan fazla talk içeren seramik desteklerle sağlanır. Talk, sıhhi tesisattaki sırların formülasyonunda toksik ağır metaller gibi potansiyel olarak tehlikeli maddelerin azaltılmasına yardımcı olur. Fırın silindirlerinde talk kullanımı, yeni silindirli fırın teknolojisinin geliştirilmesine de yardımcı olarak enerji tasarrufu ve sera gazı emisyonlarında azalma sağladı.
Tarımda Talk
Bitki sağlığı ürünlerinin akışkanlığını artırır ve enerji tasarrufu sağlar. Talk, gübre peletlerini daha etkili bir şekilde kaplar ve yapıştırıcı olarak kullanılan hidrokarbonu korur. Talk kaplı gübre daha az çevresel etkiye sahiptir ve daha az hidrokarbon içeriği gerektirdiği için daha az kokuludur. Sonuç olarak, fabrika işçilerinin sağlığı için daha iyidir. Talk, hayvan yemlerinin akışkanlığını artırır. Bu, devrelerde daha az bakteri birikmesine ve daha az üretim durmasına neden olarak enerji tasarrufu ve operatörün işini daha güvenli hale getirir.
Kauçuk Talk
Kauçuk performansını artırmaya yardımcı olur. Talk, otomotiv hortumlarının geçirgenliğini azaltır, hidrokarbon buharlaşma oranlarını düşürür ve toksik emisyonları ve yakıt kokusunu azaltır. Talk pudralama, koşu bandı döngülerini hızlandırır ve enerji gereksinimlerini düşürür.
Atık Su Arıtmasında Talk
Aktif çamur atık su arıtma ünitelerinin performansını artırır. Talk bazlı ürünler, aktif çamur atık su arıtma tesislerinin (atıkları ayrıştırmak için bakterilerin kullanıldığı) daha iyi performans göstermesine yardımcı olur. Talk partikülleri, bakteri yumakları için balast görevi görerek sedimantasyonu ve atık su arıtımını iyileştirir. Bu, bakteri kaybı olmayan yüksek kaliteli atık su üretir. Tesisler, maliyetli tesis genişletmelerine gerek kalmadan bu şekilde yükseltilebilir. Atık suyu temizlemek için kullanılan çoğu kimyasalın aksine talk, çamurun gübreleme değerini düşürmeyen doğal, çevresel olarak inert bir mineral katkı maddesidir.
Macunlarda talk
Solvent içeriğinde azalma sağlar. Polyester macunlar, viskoziteyi azaltmak için tipik olarak %13 ila %15 stiren içerir. Düşük yağ emilimli talkın eklenmesi, formülatörlerin, uygun viskoziteyi korurken, Avrupa standartlarını karşılamak için stiren içeriğini azaltmasına olanak tanır.
Kaplamalarda Talk
Boya dayanıklılığına ve VOC azalmasına katkıda bulunur. Talk'un inertliği, yapışmayı ve korozyona karşı korumayı iyileştirerek boyanın ömrünü uzatır. Talk'ın düşük viskozite özellikleri, kaplama üreticilerinin düşük uçucu organik bileşik (VOC) boyalar oluşturmasını sağlayarak uygulanan miktarı ve solvent emisyonlarını azaltır. Bu hem çevreye hem de kullanıcıların sağlığına fayda sağlar.
Adres
CUMHURİYET MAH.GÜRPINAR YOLU CAD.BEYKENT İŞ MERK.NO.4/1/348 BÜYÜKÇEKMECE
Telefon
+90 538 938 31 85
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