Cement production has always remained a concern for global warming due to the high energy requirements and the release of significant amounts of CO2. Besides, ACC has embarked upon an ambitious project for substituting five per cent of its annual coal requirement of about five million tons over the next three years with waste generated by cities and industries. It has already replaced two per cent of its coal requirement with all types of wastes.…
A concrete mix was designed based on the BRE Manual Design of concrete mixtures. Then, a total of 40kg of the required proportions of Ordinary Portland cement which includes water, fine aggregate, and 20mm size crushed gravel coarse aggregate was weighed out. The materials are then batched and mixed in a pan mixer. Next, a slump test for the concrete mixture was carried out. The concrete mixture was then used to produce 4 no. 100mm cubes and two 500 x 100 x 100 mm prisms based on table 1.1. Finally, the specimens were labeled and covered for curing. Sieving was also conducted on the fine and course aggregate to produce a sieving analysis chart.…
Mehta, P. K. &Pirtz, D. (2000). Use of rice husk ash to reduce temperature in high strengthmass concrete. ACI Journal Proceedings,…
Heavy calcium carbonate grinding mill is mainly applied to grind non-inflammable, non-explosive and brittle materials with Mohs’ hardness under six. Such as calcite, chalk, limestone, dolomite, kaolin, gypsum, and talc etc, totally more than 100 kinds of materials. Product fineness can be controlled between 300~3000 mesh (47~5 micron)…
The limestone rotary kiln is a kind of high yield, energy saving equipment, than traditional lime rotary kiln energy saving 50%, is the world of technology more advanced crushing equipment. To the extent the same period compared to wear parts wear less, life also in some extent, has the greatly enhanced. Because of our system of sand machine through all the optimized structure reform, at the same time, in order to meet the demand of the mine’s owners and sand company, limestone rotary kiln is undoubtedly first choice, this equipment is the mechanical manufacturing and crusher technology, new technologies, new age embodiment.…
The rotary kiln is the main equipment for calcining cement clinker. Rotary kiln has the advantages of simple structure, convenient and reliable production, less wearing parts, and high operating rate. It is the equipment not only for calcining high grade cement in cement plant, but also widely used in metallurgy, chemical industry, construction industry, etc. The operation efficiency of the rotary kiln largely depends on the quality of the refractories, the correctness of the supporting facility and the right use and maintenance. If one enterprise does not have very professional team to guide the right way in the selection, construction and maintenance, it will be short-lived because of not having systematic and scientific maintenance. Even unexpected accidents would happen. The use and maintenance of cement kilns have a direct impact on safe and effective operation of the cement kiln system, which has become an important issue for cement plant to increase capacity.…
After cutting of the specimens, the experiment was held heat treatment under 900Cº for one o’clock. For 0.4%C different mechanism of cooling (i.e. air cooling, furnace cooling and water quenching) was used. After proper cooling mounting was the next step. Hot press mounting machine was used for mounting the sample in order to make suitable for handling and to make the surface flat and zero slope for the next steps. After the mounting the next step was grinding with different…
The current rapid development in India has created a large demand for construction for years to come, requiring increased production of cast-in-place concrete and concrete products. These will be essential to major infrastructure construction projects such as transportation (roads, bridges, airports), water distribution (embankments and water channels), energy development (nuclear power generation), and for buildings in general. Typically, conventional concrete is made of fine and coarse aggregates, water, Portland cement and chemical admixtures. Portland cement based composites have high potential for strength which are not utilized gainfully in the actual practice. Moreover, it has been conceded that the concrete is the largest man-made material of construction. To make the concrete more eco-friendly, its energy content should be reduced, its long-term durability superior and the ingredients environment-friendly. Therefore, it is essential to introduce new technologies and practices for alternative cement and concrete compositions in order to curtail the rising environmental problems caused by increased Portland cement production. Furthermore, these new technologies will slow down the depletion of…
None of the cement producers in Pakistan enjoys any material product differentiation because of the highly standardized nature of product therefore consumers usually regard ‘price’ as a key determinant. Major constituents of the cost are energy & power - over 60% of cost of production of cement - and transportation costs. In addition to these elements efficiency of production process is critical in keeping the overall cost structure competitive. In this regard, size of the plant, its age, and origin - European or Chinese - are of importance.…
Stone processing and other mining resources in the production process will produce a lot of dust, dust both pollute the environment and gave the health of workers caused tremendous harm, and therefore in the process of stone production line, to find a solution to the dust is necessary. How to do, in order to effectively solve the problem of dust in the production process?…
Cement rotary kiln maintenance mainly includes kiln cylinder hitting, split brick, clean up and masonry. In order to shorten the time of stoping rotary kiln,it is commonly that kiln cylinder hitting and split brick usually is conducted after 10 or 12 hours rotary kiln cooling. The temperature inside of rotary kiln remains above 900 degree centigrade,therefore kiln cylinder hitting and split brick is working in the condition of high temperature and high dust.…
In 1914, the first licensed cement-manufacturing unit in India was set-up by the India Cement Company Ltd. With the boom in the economy-growth rate of India, the cement industry is seeing a great future. India has now become the second largest cement producer in the world after China, with a total capacity of 151.2 Million Tones, contributed by around 125 large and 300 mini cement plants. Further growth in the Indian cement industry is expected in the coming years. It is expected that by FY12, the cement production capacity will rise up to 262.61 Million Tones.…
This report is a part of CVE 335 Cement and Concrete Materials Laboratory for civil engineering junior students. This project is about the normal consistency and the setting time of cement paste. The data on this individual report is based on our experiment which my group and I have done last Thursday.…
Facilities are established in the plant to produce different types of cement and clinker like Ordinary Portland cement, Sulphate Resisting Cement, Moderate Sulphate Resisting Cement, Ordinary Portland Cement Clinker and Sulphate Resisting Cement Clinker.Over all the last few years Fujairah Cement has been continuously moving forward to upgrade its technology such as environmental ones. Many steps are continuously being taken to add in the latest quality control and cost saving equipments along with other state of the art technology in the field of cement manufacturing, as far as possible.…
Since 2006 the Group Roadmap has set the priorities for risk management through Standards and Advisories…