Cement News tagged under: kiln

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National Cement to invest US$250m in Ragland

23 December 2019, Published under Cement News

Vicat-owned National Cement will be installing a new state-of-the-art kiln at its Ragland plant in Alabama, USA. The project represents an investment of US$250m and the project is expected to start the construction in the first quarter of 2020. "We are excited about our kiln project in Ragland. It will ensure that our employees and our Ragland facility can continue to be competitive for years to come by upgrading our plant with the latest technology and equipment," said Spencer Weitman, p...

Tourah Cement rejects kiln auction result

27 August 2019, Published under Cement News

Tourah Cement rejected the auction result to sell off the old kilns of its Tourah plant as a result of the low price received. They are to be reauctioned later. The proceeds from selling the kilns, which ceased operation in 2013, reached around EGP7.6m (US$459,419), according to the company.

South Ferriby Kiln 2 to start production in November

20 September 2018, Published under Cement News

Cemex plans to start up its second kiln at the South Ferriby plant in north Lincolnshire, UK, in November 2018. Initially installed in 1973, the kiln has a capacity of 1000tpd and has seen significant investment over the year to ensure compliance with environmental legislation. A recent modernisation programme has seen the renewal of electrical infrastructure, control system and instrumentation. The kiln was the first to achieve 100 per cent substitution of fossil fuels with alternative ...

Welding repairs for kilns

23 January 2018, Published under Cement News

Despite 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...

Aspirating the kiln

16 October 2017, Published under Cement News

Last month’s Technical Forum concluded with the following closing comments: “A sufficient supply of oxygen to the kiln is critical. Any limitations on the drawing of oxygen into the kiln or exhausting the gases from the kiln are also a common cause of such problems.” Therefore, this month’s Technical Forum considers the need for aspiration to help increase oxygen supply to the kiln and improve burning conditions. Drawing sufficient oxygen into the kiln is critical to maintaining an ox...

Retrofitting Ijaci’s ID fans

23 August 2017, Published under Cement News

In a recent project InterCement awarded Howden South America the contract to retrofit its existing kiln induced-draught fans at its Ijaci plant in Minas Gerais, Brazil. As a result the cement works was able to increase its kiln capacity and introduce alternative fuels as a more sustainable and less expensive energy source. By Howden South America, Brazil. The new equipment ships from Howden South America, Brazil InterCement operates 40 production units in eight countries, includ...

Beyond Bernoulli

19 October 2015, Published under Cement News

Dr Clark considers the flow of gases through the cement kiln process and some of the governing principles and complexities. Preheater exhaust gas flows are an important source of recoverable energy A recurring theme of the Technical Forum has been the fundamental mass balance of a cement kiln and the mass flows into, through and away from the cement kiln system. The subject of this month’s article are the mass flows in the exhaust gases and particularly the preheater exhaust....

Paraguay: INC’s kiln returns to normal service

10 July 2015, Published under Cement News

Industria Nacional del Cemento (INC) announced that its kiln at the Vallemi works is back up and running since Tuesday after a six-day stop due to technical issues. At present the company is carrying out a fuel switch that will see the plant operate with petcoke, forest waste and coal among others. The change in fuel will allow INC to save over US$22m. The cement producer said around 40 per cent of the work oj the project has been carried out to date.

Paraguay: INC continues operations during kiln repair

06 July 2015, Published under Cement News

Industria Nacional de Cemento announced that it has sufficient clinker stock to continue operations for more than 30 days following technical issues at its kiln in Vallemi. It expects repairs to be completed on Wednesday. At present, INC produces over 55,000 bags of cement per day and over the past six months has dispatched 6.5m bags, up 14 per cent YoY and 30 per cent when compared with 2013.

Balancing dusts in the kiln

08 April 2015, Published under Cement News

Chemically the expectation for a cement clinker is that it will have the same overall chemical composition as the raw materials from which it is made, less any gaseous emissions and plus any ash provided by the fuels. However, much happens between the raw materials entering the raw mill and the emergence of the clinker. Figure 1: typical LSF of materials through a kiln Much of the variation in the bulk chemistry of the material passing through the system is related to the creati...