11/23/2013

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Cement Production Line Cement is one of the most essential accessories (bonding agent) in the building industry. It can be produced in a simple process and at reasonable cost, the finished product is not harmful to the environment, and it can be recycled. There has been a significant increase in the utilization of cement over the past few years. The demand is expected to increase further in the future as, especially in Asia and Latin America, infrastructure measures and housing will be intensified. There are double-digit growth rates in cement production mainly in China, but also in India, Indonesia, Malaysia and the Philippines. Several Middle East and African countries are also increasing their cement production. State-of-the-art coarse grinding systems are usually vertical roller grinding mills (see section 1.2.4) or roller presses (see section 1.2.5). Due to their slighter energy consumption, these systems are gradually replacing ball tube mills (consulte la Seccion 1.2.6) which are still used, in combination with an impact mill or as independent units for coarse grinding. In the coarse-grinding process the final grain sizes of approx. 0.1 mm required for the further cement production process are produced. Burning the raw meal/cooling clinkers In the so-called cyclone preheating plants and succeeding rotary kilns the raw meal is continuously heated from ambient temperature to approx. 1500 C and discharged as granulated cement clinker. The burning of raw meal to clinker constitutes a complex process. It consists of precisely defined steps and is constantly monitored. Large rotary kilns today can be approx. 6 m across and 100 m long, reaching throughputs of up to about 10,000 t per unit and day. The energy carriers used for preheating and heating in preheating for burning the material in rotary kilns and plants are coal, oil and natural gas. Which of these fuels are ultimately used...
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Classroom Virtual In recent days, it is important to keep in constant updating that drives our job growth. In other words, to advance in the field he works, we must return to the classrooms and nurture of graduate programs. This necessity forces us to leave the Office, and this process is not always accessible, despite us be indispensable, the unemployment situation puts at risk our place in the job title. It is therefore a great tool to meet the demand of curricular growth lies in the Internet and in the modalities of postgraduate (masters, doctorates and diplomas) online through virtual classroom. That also gives the fabulous privilege of being able to enter master's degrees abroad, as well as doctoral programs or graduates in which is possible to interact with other participants. In this UNAM tool called Elluminate, is a virtual classroom that has as main function support learning at a distance, because this allows the interaction of teachers and students in real time to through audio, video, instant messaging and an interactive whiteboard. In addition participants can share applications of different types of formats in office, pdf, image, audio and video, at the time that can guide other users through Web tours. It is important to say that one of their main advantages refers to its ease of use, it is ideal for meetings, training, tutorials, meetings and even conferences, since it is available 24 hours a day and 365 days a year. In this space you see the similarity with the conventional classroom, in which the Professor imparts his chair through a Blackboard, while receiving feedback from teaching and learning which are dictating their students, who participate Alternatively, with the difference that, through the various tools of new technologies, have all involved greatly enrich knowledge through the information that is available...