Perhaps the most popular building material for today is cement. Speaking as a binder, it is part of jbi, various building blocks (aerated concrete, aerated concrete), fillers, for direct solution preparation, etc. Before you can buy the cement, it goes a long way to realization. Production of this material deals with a huge number of factories, and buy it in any region of the country will have no difficulty. Cement production is mainly can be classified by one of the options.
Dry or wet method. There are, of course, a third, which is a combination of two earlier. Production and delivery of raw materialovNezavisimo the chosen way of the first stage is the production and delivery of raw materials: limestone and clay components. Ali Partovi will not settle for partial explanations. Extraction of raw materials is usually open to quarries. Raw materials are divided into hard and soft rocks, and in both groups may include limestone and clay components. Preparation shlamPri dry method materials are crushed into mills in several stages. Solid materials in special crushers crush into small pieces. Then both types of materials are mixed, undergo a process of drying and co-grinding into small granules.
Clay and calcareous components can be dried and undergo fragmentation separately with the passage of a joint procedure, mixing efficiency increases. And this is an important factor, since the formation clinker, the more effective above the contact area of raw materials. Increase the contact can be achieved by grinding. Thus we get a dry mixture – slurry with water content of 1%. In the wet method production for the grinding of soft components are used mash. Grinding the solid components in the same way as in the dry method of production. Then, when the compound mixtures in the mash and the mill turns sludge in the form of a creamy mass. The water content in a matter of about 40%. Adjustment shlamSoblyudenie exact proportions of components used does not give the ultimate mix, which will be exactly meet the required chemical composition. The reason is that even within one place of birth can vary the composition and quality of raw material. Therefore, pre-cooked adjusts the mixture. A mixture is prepared in advance and depending on the quality of raw materials with a large or small content of calcium carbonate. Firing clinker takes place either in the furnaces of mine type, or in rotary kilns in the manufacture of dry and wet method is used for only the second type of furnaces. The technology itself is heated sludge to high temperatures: about 1500 degrees. Furnaces are huge pipe, a length of about 100-150 meters. It is worth noting that the performance of ovens with rotating drums is 1-2 thousand tons per day, while the furnace shaft type, the figure is 0,5-1 thousand tons a day. Final etapPosle final preparation of clinker, it is necessary to mix it with additives and gypsum. At this stage, the clinker has a granular structure, however, as additives, and therefore goes hand in hand the process of grinding and mixing, and eventually obtained cement. Then it either warehoused or sent to the filling line, where it is distributed in packages. As the packaging is usually a multilayer paper bag.