Raw materials for industry - sand white quartz

What miracles are not prepared for man on earth! For example, an amazing sight is white sand. From a distance you will not understand at once: whether it is snowdrifts in the middle of summer, or mountains of granulated sugar, or perhaps table salt or another chemical? And only having approached, having taken on a palm and waking up through fingers, you understand, what is it white sand which photo is resulted in given article. And it consists of quartz - a mineral distributed on Earth. Quartz is part of the mineral composition of oligomictic and polymictic sands, composed of desert barkhans, dunes of sea coasts, shallow waters.

Natural white sand

Deposits of quartz sand occur in river valleys. The white river sand is the cleanest, it usually does not contain pollutants, as well as mountain quartz sand, weathered vein outcrops. It is likely to meet in the deposits of natural quartz sand nuggets of precious metals or their minerals. There is sand white buried beneath the thickness of other sedimentary rocks and mined by the quarry method. It usually contains contaminants in the form of admixtures of clays, sandy loams, loams, polymictic sands, which occur in the thickness of quartz sand in the form of layers and lenses.

Creation of nature and hands of human beings

White sand, consisting of 90-95% of quartz, is not so common and is very much appreciated as a raw material for many industries. The lack of natural sand can be replenished - to obtain artificial quartz sand, using crushing and screening equipment. For the production of sand, monolith blocks of milky white quartz are used, crushing which, and sifting the destroyed rock, produces sand with certain and desired particle sizes (fractions). From natural sand artificial is distinguished by exceptional monominerality, acute angles of grains of sand.

Where is quartz sand used

White sand is used for the production of glass. To him are such requirements: 95% it consists of quartz, it should be medium-grained (diameter of sand particles 0.25-0.5 mm), without admixture of substances that are hardly soluble in the glass mass, without harmful impurities of minerals containing iron, chromium, titanium (They color the glass and increase its light absorption). A good glass sand is one that is 98.5% quartz and includes iron oxide not more than 0.1%. Quartz glass is needed for the manufacture of chemical glassware, in instrument making - it withstands significant temperature changes. For forms and rods in the foundry industry, ferrous and non-ferrous metals are also used quartz sand, called metallurgy molding. The quality of this sand is determined by its granulometric composition and the shape of the particles that affect the gas permeability, and the amount of impurities that reduce the refractoriness of the sand. It is necessary that in the sands there are no minerals with a high content of sulfur and phosphorus, which are harmful for metal casting. Apply quartz sand to the production of grinding wheels and "nazhdachki" - for this, sand is melted with graphite and carborundum is obtained, second only to diamond in terms of hardness. Exclusive mud capacity (sorption capacity) of quartz sand is used in filters for water purification from iron and manganese oxides. Apply this sand in construction for plastering surfaces and for the production of finishing panels, concrete blocks. Used in landscape design. And even coffee, warmed in marmite, filled with white quartz sand, will delight the fragrant taste.