Cement Production Technology_ تکنولوژی تولیدسیمان

Cement Production Technology

تکنولوژی تولیدسیمان

Anjan Kumar Chatterjee is presently the chairman of Conmat Technologies Private Limited, which is a research and consulting outfit in Kolkata, India, that is engaged in providing technical support services to the cement, concrete, and mineral industries in India and abroad. He is also director-in-charge of Dr. Fixit Institute of Structural Protection and Rehabilitation, Mumbai, which is a not-for-profit knowledge center specifically devoted to repair, restoration, and renewal engineering of concrete buildings. He is also associated with the major cement companies in the country in various advisory capacities. Prior to taking up the above assignments, Dr. Chatterjee was an employee of the Associated Cement Companies Limited (now ACC Limited) for over two decades, and retired as its Whole-time executive director. While at ACC, he was responsible for the company’s R&D and Project Engineering departments, as well as several other business units. Academically, Dr. Chatterjee is a postgraduate in Geology and holds a doctorate in Materials Science. He has researched extensively in the fields of electro-remelting slags, phase equilibrium studies on oxy-fluoride systems, and microstructural studies of cement, concrete, and ceramics at the Institute of Metallurgy in Moscow, Moscow State University, Russia, and the Building Research Establishment, United Kingdom. Dr. Chatterjee has been on various international assignments with UNIDO and IVAM Environmental Research, University of Amsterdam, The Netherlands. He is a fellow of the Indian National Academy of Engineering, Indian Concrete Institute, and Indian Ceramic Institute and a founding member of the Asian Cement & Concrete Research Academy in Beijing, China. He has been conferred lifetime achievement awards by the Indian Concrete Institute, Association of Consulting Civil Engineers, Confederation of
Indian Industries, and Cement Manufacturers’ Association, and has many other awards and a large number of publications to his credit. It is said that cement manufacture begins in the quarry (Figure 1.1), which is the commonly used term for opencast mining of minerals and rocks including limestone, the primary raw material for cement production. Since there is hardly any alternative to using limestone for making cement, it is treated as one among the most essential resources of a country. However, given its importance in the economy of any nation, our understanding of the genesis, occurrence, composition, properties, mining, and application of limestone is rather poor. This is because limestone has long been regarded as a “common” rock, and past geological studies were limited in scope, focused essentially on mapping deposits, analyzing rocks, and—occasionally—evaluating aquifers and petroleum reservoirs. However, a different set of data and a deeper understanding are needed to make more efficient use of limestone as a cement raw material. Further, there are certain other naturally occurring raw materials like limestone that are also used in cement manufacture, although in smaller quantities and only when required, and they include clay, bauxite, iron ore, sandstone, and so on. These materials are also obtained from opencast mining operations. Hence, a basic knowledge of geology
and mining is important for cement chemists, technologists, and plant engineers. Keeping this in view, this chapter presents the fundamentals of geology, chemistry, and the mining of raw materials as relevant to cement production. Any naturally occurring chemical compound making up a part of the Earth’s crust is called a mineral. Minerals may occur in solid, liquid, or gaseous form. Natural gas is the best example of the occurrence of minerals in a gaseous state. Petroleum, mercury, and water are the commonest examples of minerals in liquid form. Solid minerals can either be native elements like gold, silver, etc., or compounds like calcium carbonate (calcite), calcium silicate (wollastonite), aluminum silicate hydrate (kaolinite), etc. The last group of solid minerals in the form of simple or complex compounds is of particular relevance for cement manufacture.

تکنولوژی تولیدسیمان

تکنولوژی تولیدسیمان

تکنولوژی تولیدسیمان

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