Cement News tagged under: manufacturing technology
Reliable performer03 December 2012, Published under Cement NewsCompared with conventional solutions, a new drive concept with asynchronous squirrel-cage motors at the Lafarge Cement plant near Pécs, Hungary, boasts minimum service and maintenance costs. And if that was not enough, higher efficiency is also helping improve the bottom line. By Alf Banse, Siemens, Germany and Jozsfe Janovits, Lafarge Cement Hungary. The substitution of the drive system has had no negative impact on the grinding process at Lafarge Cement near Pécs, Hungary N... |
MPS: more than meets the eye19 November 2012, Published under Cement NewsVertical roller mills are not only used for grinding cement raw materials but also find an application in grinding a wide variety of coal types in cement and power plants. Gebr Pfeiffer SE (GPSE) describes its vertical roller mills for coal grinding and provides a case study of an MPS225BK installed at CBR’s Lixhe cement works in Belgium. By Dr Caroline Woywadt and Rüdiger Sonnen, Gebr Pfeiffer SE, Germany. Figure 1: MPS coal grinding mill with SLS high-efficiency classifier ... |
Increasing the momentum22 October 2012, Published under Cement NewsA TEC GRECO’s Flexiflame burners facilitate the control of the flame geometry in the kiln. Further burner optimisation has brought the benefits of a reduced NOx generation as well as ensuring better combustion of petcoke and solid alternative fuels. A TEC GRECO explains. The arrangement of the primary air outflow as individual jets has a very favourable effect on the combustion, as it assures rapid mixing of the hot secondary air into the flame The FlexiflameTM burner is the... |
Free lime reduction08 October 2012, Published under Cement NewsThe occurrence of high free lime can result in poor clinker quality and inefficient burning. Chemical variance in the raw materials and changes to the burning conditions can also upset the kiln balance, which can lead to other problems such as the formation of snowballs. So what are the main factors that will help to reduce high free lime? Figure 1: cluster of early-formed C2S crystals (field of width 750µm) As in most walks of life, cement manufacturing has developed a degre... |
Elevating service life26 September 2012, Published under Cement NewsThe modernisation of Lafarge’s Wössingen plant in Baden-Württemberg, Germany, included improvements on the existing belt bucket elevator to the raw mill. The intralogistics specialist Beumer was awarded a contract to supply its heavy-duty bucket elevators which offer increased conveying capacity and longer service life. Thanks to this new technology, the existing bucket elevator could be easily altered. German-based Beumer Group takes us through the project. Lafarge’s Wössingen plant,... |
High-efficiency cement grinding17 September 2012, Published under Cement NewsFor more than a quarter of a century the ThyssenKrupp Polysius’ POLYCOM® high-pressure grinding roll (HPGR) has been in successful operation. More than 65 of the presses are working in highly-efficient clinker grinding systems around the world. By using the POLYCOM as a stand-alone grinding machine (finish grinding circuit) a reduction in specific power consumption of around 50 per cent compared to conventional ball mill circuits is achievable. The high compression stressing applied inside t... |
Continuous flue gas monitoring12 September 2012, Published under Cement NewsStricter emission legislation has increased the need for continuous emission monitoring. For cement producers, the high-temperature and high-dust environment in the kiln has presented various challenges in meeting this requirement. However, Spenner Zement Co of Erwitte, Germany, called in the help of Enotec to provide the solution to this particular problem. By Enotec, Germany. Designed specifically for the cement industry and featuring water cooling, a rotating device and automati... |
Bulk handling the Van Aalst way10 September 2012, Published under Cement NewsVan Aalst Bulk Handling BV (VABH), based in The Netherlands, is globally renowned for its versatile pneumatic shipunloading systems, capable of handling cement capacities of between 50-1000tph and serving ships of up to 65,000dwt. This article by Van Aalst Bulk Handling BV, Dragon Alfa Cement Ltd and ICR explores the history of the group and the fundamental technologies and solutions on offer, alongside recent experiences of leading UK cement importers, Southern Cement and Dragon Alfa Cement... |
Zlatna's alternative05 September 2012, Published under Cement NewsLast year, Titan’s Zlatna Panega plant in Bulgaria successfully started up its new installation for processing alternative fuels and recovering energy to use in its clinker production process. The introduction of engineered fuels has helped the company improve its competitiveness and paves the way for future increases in alternative fuels usage. By Titan Bulgaria. Titan Zlatna Panega plant, Bulgaria The new alternative fuels installation at the Zlatna Panega plant is designed fo... |
High accuracy fuel dosing25 July 2012, Published under Cement NewsDi Matteo has developed a tubular weigher specifically designed to dose difficult to handle secondary fuels with continuous flow rates. The WeighTUBE® has many benefits compared to gravimetric dosing systems as explained here by Dr Günther Marotz, Dr Luigi Di Matteo and Ulrich Strotkamp of Di Matteo Group Beckum, Germany. The new WeighTUBE RWS, designed by Di Matteo Particularly in the cement industry, recent years have seen the replacement of conventional fossil fuels with alte... |