Cement News tagged under: manufacturing technology
Bold Bulandshahr12 February 2018, Published under Cement NewsShree Cement Ltd (SCL) has expanded rapidly over the last decade, from just 5Mt in 2007 to 29.3Mt cement capacity in 2017, making it the third-largest cement producer in India, after UltraTech and LafargeHolcim. Its cement plants are situated in the north of India with over half the capacity located in its home state of Rajasthan, where it is the market leader. ICR visited SCL’s Bulandshahr grinding works, where modern technology enables the company to meet the demand of India’s most populou... |
NCB holds 15th seminar05 February 2018, Published under Cement NewsThe 15th NCB International Seminar on Cement, Concrete and Building Materials held between 5-8 December 2017 at the Manekshaw Centre in New Delhi, India, was attended by over 1000 delegates. The technical programme featured 200 papers delivered on a diverse range of topics relevant to the industry, whilst an exhibition consisting of 90 companies highlighted the latest manufacturing technology. Some 90 companies participated in the NCB’s exhibition at the Manekshaw Centre in New Delhi,... |
Nova Cimangola II29 January 2018, Published under Cement NewsTo lower its production costs, Nova Cimangola has constructed its new clinker line in Sequele, Luanda, near its existing plant in Cacuaco. The new clinker line is to make the company self-sufficient in clinker, avoiding the need for future clinker imports, as well as raising grinding capacity following completion of the second phase in anticipation of substantial forecast market growth. By Nova Cimangola, Angola. Nova Cimangola’s new clinker line enables the company to be self-suffici... |
Welding repairs for kilns23 January 2018, Published under Cement NewsDespite forming an integral part of many process lines, the importance of maintaining the rotary kiln in prime operating condition is often overlooked or misunderstood. Poor maintenance can cause long-term issues, including kiln shell and tyre cracking, requiring specialist weld repairs. By Mark Whittaker and Bent Johannessen, Rotary Kiln Services Pty Ltd, Australia. Figure 1: repairing a kiln shell Even in poor condition, rotary kilns continue to rotate, barely getting more tha... |
Scrubbing technology17 January 2018, Published under Cement NewsWhen it comes to emission-reduction technology, how does a plant know it is selecting the right technology for the job? Redecam believes its DeSOx technology, known as RDS, provides the ideal solution for both the cement and the lime industry. Here it directly compares RDS with wet flue gas desulphurisation (FGD). By Redecam Group SpA, Italy. Redecam’s circulating fluidised bed semi-dry reactor, RDS, provides an alternative to wet flue gas desulphurisation technology to reduce SO x... |
Lighting up the mighty Xuan Thanh15 January 2018, Published under Cement NewsVietnam’s first mega plant and 12,500tpd kiln line was commissioned by Xuan Thanh Cement JSC at Ha Nam on 9 October 2017. The line is a bold statement and an apt symbol of the tremendous development achieved by Vietnam, one of Asia’s most dynamic emerging markets, over the course three decades of almost uninterrupted economic growth. ICR reports on the new production line and the Xuan Thanh’s ambitions to construct a further three 12,500tpd lines by 2020. Xuan Thanh cement plant, buil... |
Not simply calcining10 January 2018, Published under Cement NewsWhile the primary purpose of the calciner in a cement plant is to aid decomposition of calcite from the preheated raw meal, the need to lower CO 2 emissions and the introduction of alternative fuels has broadened the range of requirements that modern-day calciners need to address. By Dr Heiko Schürmann and Norbert Streit, KHD-Humboldt Wedag GmbH, Germany. Figure 1: the main purpose of the calciner is to decompose calcite from the preheated raw meal, which is the most energy-intens... |
Setting a new benchmark21 December 2017, Published under Cement NewsAs ever-higher efficiencies are demanded of grinding equipment, cement plants require a new benchmark for grinding component performance. Addressing wear through regular maintenance and repair is one strategy with the sustainable supply of grinding parts and management of mill wear as key factors in keeping mills running. By Dr Dorival G Tecco, Loesche GmbH, Germany. Figure 1: typical wear profiles. The arrows indicate the areas of maximum wear. Deeper wear profiles may lead to a loss... |
Finding the missing link13 December 2017, Published under Cement NewsIn 2015 Çimsa Çimento’s Mersin plant, Turkey, suffered an increasing number of cyclone blockages, causing severe interruptions to the facility’s grey cement Line 1. After unsuccessful attempts to find the reason for the blockages, a kiln inlet process gas measurement system from sick was installed to provide the missing link between the sulphur content in the kiln process gases and unwanted production downtime. By Felix Bartknecht, SICK AG, Germany, and Sezin Arıkan, Çimsa Çimento Mersin, T... |
Crystal clusters in clinker13 December 2017, Published under Cement NewsWith increasing use of alternative fuels, short homogenisation times in precalciner kiln systems and the requirement for high alite cement, the presence of crystal clusters is not expected to be a thing of the past. While the impact of crystal clusters in clinker on quality is not always clear, some effects can be seen. Figure 1: brown and lighter blue belite crystals surrounding liquid phase Cement clinker for general-purpose Portland cement is composed essentially of four... |