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Talc for chemical industry buy in Shymkent
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Talc for chemical industry

Talc for chemical industry

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Kazakhstan, Shymkent
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8 years on Allbiz
TALK (a soap stone), the mineral relating to layered silicates, the general of Mg3[Si4O10] branch (OH) 2. Contains (%): 31,72 MgO, 63,52 SiO2, 4,76 H2O. Magnesium can be substituted on Fe, Ni, Ca. According to it distinguish: minnesotait Fe3[Si4O10] (OH)2 with the maintenance of Fe2O3 to 50%, villemeit Ni3[Si4O10] (OH)2 with the maintenance of Ni to 30,6%, kaltsiotalkit CaMg2[Si4O10] (OH)2 with the maintenance of SAO of 11,8%. Steatite (or a fatty tumor) call dense massive talc.
Osn. elements of structure of talc - three-layered "packages" thickness apprx. 0,9 nanometers, in to-rykh between layers of kremnekislorod-ny tetrahedrons [Si4O10] 4-the layer of octahedrons of MgO4 (OH) 2 is located. Charges of atoms in "packages" are compensated; "packages" are connected among themselves by weak van-der-vaalso-vymi by forces. An elementary cell - triclinic. Talc meets in the form of listovaty, scaly, sometimes radial and radiant, is more rare than fibrous units. Color is usually white, pale green, sometimes a brownish, grayish, yellowish, bluish or pinkish shade. Plotn. 2776-2824 kg/m3, hardness on mineralogich. to a scale 1, greasy to the touch. Talc-bad heat conductor and electricity. Not rastvo. in water, rastvo. in to-takh; decays fusing with alkalis and carbonates of alkaline metals. At 930 °C loses IT groups.
Talc is formed in osn. in Earth subsoil at povysh. bang and pressure. This widespread mineral - a typical product of hydrothermal changes of giperbazit. Prom. fields represent talc stones (with impurity of carbonates and a mineral of chlorite), to-rye turn out at decomposition of dolomite under the influence of silicate solutions, or the cleaner talkita which are formed in places of contacts of magnesian and silicic breeds.
Talc is applied as a filler in pro-publishing house of rubber, paper, varnishes, paints; a component of powders, powders in medicine and perfumery; solid lubricant; ceramics component (talc refractory material), etc. Dense fine-grained bezzhelezisty steatite is used as an ornamental stone.
Considered earlier that inhalation of dust of talc can cause a talkoz-benign disease from group of a pneumoconiosis, however the special researches conducted by the European association of producers of talc have shown that talc is harmless to health.
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Talc for chemical industry
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