2012年12月11日星期二

Comprehensive Operation Skill of Cement Mill


The cement producing method consists of stuff grinding, blending, pre-calcining, clinker burning and cement grinding. In short, sedimentary rock and different materials containing atomic number 20, silicon, atomic number 13 and iron oxides square measure crushed and ground into a raw meal. This raw meal is mixed then heated within the pre-heating system (cyclones) to start out the dissociation of carbonate to chemical compound. The meal goes any into the oven for heating and reaction between calcined lime and different parts to make atomic number 20 silicates and aluminates at t a temperature up to 1450 cent degree: therefore known as clinker burning. The cyclone system is connected to the rotary oven by a riser duct. Secondary fuel is fed to the riser duct, the most fuel mixture, coal/petcock, fires the oven. Reaction merchandise leave the oven as a nodular material known as clinker. The clinker are underground with mineral and different materials to cement.
The hardness of clinker is important for the energy cost of the grinding process. It depends both on the clinker's mineral composition and its thermal history. The easiest-ground clinker mineral is alite, so high-alite clinkers reduce grinding costs, although they are more expensive to make in the kiln. The toughest mineral is belite, because it is harder, and is somewhat plastic, so that crystals tend to flatten rather than shatter when impacted in the mill. The mode of burning of the clinker is also important. Clinker rapidly burned at the minimum temperature for combination, then rapidly cooled, contains small, defective crystals that grind easily. These crystals are usually also optimal for reactivity. On the other hand, long burning at excess temperature, and slow cooling, lead to large, well-formed crystals that are hard to grind and un-reactive. The effect of such a clinker can be to double milling costs.
Cement mill is composed of feeding part, discharging part, turning part and driving part (reducer, small driving gear, electric motor and electric control). The quill shaft adopts cast steel part and the liner is detachable. The turning gearwheel adopts casting hobbling process and the drum is equipped with wear-resistant liner, which has good wear-resistance. The machine is with stable and reliable working condition. Moreover, according to different materials and discharging methods, there are dry ball mills and wet ball mills for choice. To a service-oriented brand integrity, as the professional manufacturer of complete sets of mining machinery, like sand washing machine, Henan Hongxing is always doing the best in products and service.aggregate mixer: http://www.china-hxjq.com/n267.html
In the techniques of Cement production process, People usually choose lime stones and clays as the main raw materials, crushing, concocting, grinding them into cement raw meal, feeding them into cement kiln, cement clinker is usually ground using a ball mill. After being calcite maturity, adding appropriate amount of gypsum (sometimes mixing the mixed material or admixture) then being grinded, and the cements form.
Cement production in the mining area to establish the layout of cement clinker production line, in the major cities in the vicinity of cement sales market is set up near the cement grinding stations. Admixture produced most of the urban industrial waste, cement grinding stations around the city greatly digest of slag, fly ash, slag, coal and other industrial waste, is a green industry to provide the cement grinding factory Point process used in the most simple and most convenient operation, process equipment, at least, less investment, saving, environmental protection, hybrid materials can be mixed with more advantages.
Hongxing cement grinding mill is made use of for grinding the crushed materials, and after that to smash the key gear. Cement grinding mill is popular in cement, silicate production, new setting up supplies, refractory components, fertilizer, ferrous and nonferrous metal and glass ceramics along with other mineral manufacturing industries of all kinds of ores and also other grind able materials may be dry or wet grinding.

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