Raw materials for industry - sand, white quartz

What only miracles do not prepared the Ground for man! For example, an amazing sight - the sand is white. From afar and will not understand immediately: whether it is snow in the middle of summer, or the mountains of sugar and maybe salt or another chemical? And when coming closer, taking his hand and waking through your fingers, understand that it is white sand, a photo of which is reproduced in this article. And it consists of quartz - spread on the Ground of the mineral. Quartz is included in mineral composition oligomictic and polymictic Sands, forming dunes of deserts, dunes, seashores, shallow water bodies.

Natural sand white

Frac sand found in the river valleys. The sand is white river, the most clean, usually it does not contain polluting substances, as well as mining silica sand, weathered vein outcrop. It is likely to meet in the natural deposits of quartz sand nuggets of precious metals or minerals. The white sand is buried under strata of other sedimentary rocks and mined-pit mining. It typically contains contaminants in the form of admixtures of clays, sandy loams, loams, polymictic Sands, which occur in the thickness of the quartz sand in the form of layers and lenses.

Creation of nature and of human hands

White sand, composed of 90-95% quartz is not as common and appreciated as a raw material for many industries. The lack of natural sand can be filled to obtain artificial quartz sand using crushing and screening equipment. For the production of sand used solid blocks of milk-white quartz, granulating and sifting destroyed the breed, get the sand with a defined and desired sizes (fractions) of particles. Natural artificial sand is extremely nanomineralogy, ostrougolnaya sand.

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Where to use quartz sand

The white Sand used for glass production. It has the following requirements: 95% of it consists of quartz, must be medium-grained (diameter of the sand grains 0.25-0.5 mm), without admixture of substances insoluble in the glass mass, without harmful impurities minerals containing iron, chromium, titanium (they are painted glass and increase its absorption). A good glass sand is one that 98.5% consists of quartz and iron oxide comprises not more than 0.1%. Quartz glass is needed for the manufacture of chemical utensils, instrumentation, it can withstand large temperature changes. For molds and cores in foundry of ferrous and non-ferrous metals also used quartz sand, also called molding in metallurgy. The quality of the sand determine its granulometric composition and particle shape, affecting the permeability, and the amount of impurities that reduce the resistance of the Sands. Requires that the sand was not of minerals with a high content of sulfur and phosphorus, which are harmful for metal casting. The use of quartz sand for the production of grinding wheels and "sandpaper" - sand is melted with graphite and get carborundum, which is second in hardness only to diamond. Exceptional dirt-holding capacity (sorption ability) of quartz sand used in filters for water purification from oxides of iron and manganese. Use this sand in construction, for plastering surfaces and for producing decorative panels, concrete blocks. Use in landscape design. And even coffee, warmed in the Bain-Marie filled with white quartz sand, delight aromatic taste.