Cement Clinker Manufacturing Process Manual

What is cement? cementum is a fine powder which sets after a few hours when mixed with water, and thusly hardens in a few days into a solid, strong material. Cement is mainly used to bind fine sand and coarse aggregates unneurotic in concrete. Cement is a hydraulic binder, i. e. it hardens when water is added. There argon 27 types of common cement which can be grouped into 5 general categories and 3 strength classes ordinary, high and very high. In addition, or so special cements exist like sulphate resisting cement, low heat cement and calcium aluminate cement.The quarry is the starting point Cement plants are usu totallyy located closely either to hot spots in the trade or to areas with sufficient quantities of fresh materials. The aim is to keep transportation be low. Basic constituents for cement (lime cavity and clay) are taken from quarries in these areas. A trip the light fantastic process Basically, cement is produced in two tinctures first, clinker is produced fr om raw materials. In the second step cement is produced from cement clinker. The first step can be a dry, wet, semi-dry or semi-wet process according to the disk operating system of the raw material.Making clinker The raw materials are delivered in bulk, crushed and homogenized into a mixture which is fed into a rotary kiln. This is an enormous rotating tubing of 60 to 90 m long and up to 6 m in diameter. This huge kiln is heated by a 2000C flak inside of it. The kiln is slightly inclined to allow for the materials to slowly reach the new(prenominal) end, where it is quickly cooled to 100-200C. Four basic oxides in the correct proportions make cement clinker calcium oxide (65%), silicon oxide (20%), alumina oxide (10%) and iron oxide (5%).These elements mixed homogeneously (called raw meal or slurry) will combine when heated by the flame at a temperature of approximately 1450C. New compounds are create silicates, aluminates and ferrites of calcium. Hydraulic hardening of cemen t is due to the hydration of these compounds. The final product of this human body is called clinker. These solid grains are then stored in huge silos. annihilate of phase one. From clinker to cement The second phase is handled in a cement grinding mill, which may be located in a different place to the clinker plant.Gypsum (calcium sulphates) and possibly additional cementitious (such as blastfurnace slag, coal fly ash, natural pozzolanas, etc. ) or inert materials (limestone) are added to the clinker. All constituents are ground leading to a fine and homogenized powder. End of phase two. The cement is then stored in silos before universe dispatched either in bulk or bagged. What is concrete? Concrete is a solid material made of cement, sand, water, aggregates and often with admixtures.When fresh, it has a certain workability and takes the conformation of the mould into which it is put. When set and hardened, it is as strong as natural stone and resists time, water, frost, mech anical constraints and fire. Typically, concrete is the essential material used in all types of construction residential (housing), non-residential (offices) and civil engineering (roads, bridges, etc. ). Read more http//www. crusherindustry. com/ skype anna. smith20121 electronic mail emailprotected com