Cement News tagged under: Raw Materials

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Specifying raw materials

28 May 2014, Published under Cement News

Aiming for a tighter raw material specification may not necessarily be the best option for a cement plant looking to improve the economics or quality of its final product. Drawing up such a specification is a balancing act where changes in one raw material can lead to further changes to other parts of the raw mix. Designing the right raw material specification offers valuable opportunities to the cement works At most cement plants where the author has had some responsibility for...

Probe against Lafarge Surma land acquisition and quarrying operations

23 April 2014, Published under Cement News

The Indian Compliance Advisor/Ombudsman (CAO) is assessing a complaint filed against Lafarge Surma Cement's land acquisition and limestone quarrying operations in Meghalaya, India. Lafarge Surma Cement, a joint venture between Lafarge and Cementos Molins of Spain, operates a 1.6Mta plant at Chhatak, Bangladesh. Due to the country’s lack of limestone deposits, the Chaatak plant is a cross-border facility with a captive limestone mined located at Meghalaya, India, from where limestone is tra...

Hetauda Cement hikes prices, Nepal

04 April 2014, Published under Cement News

The board of Hetauda Cement Industries Ltd decided on Tuesday to raise the price of cement due to increased raw material costs. The Nepalese-based cement producer is to increase prices by NPR28.25/bag (US$0.30), the Kathmandu Post reported. Following the revision, the price of a bag of cement will cost NPR684.78 for dealers while development projects it will be NPR696.08. The retail price has been fixed at NPR718/bag but will cost NPR840 in Kathmandu, according to the company. This is t...

Ambuja to resume mining operations in Himachal Pradesh, India

26 February 2014, Published under Cement News

Ambuja Cements is set to resume mining operations in Himachal Pradesh after the High Court granted a stay on the Ministry of Environment and Forest’s (MoEF) suspension order which was issued at the beginning of February 2014. "...the High Court of Himachal Pradesh has granted a stay on the order issued by the Ministry of Environment and Forest and accordingly, mining operations at Himachal Pradesh plants would now be resumed," the Holcim group company said in a Bombay Stock Exchange filing....

The importance of raw materials

17 February 2014, Published under Cement News

Proper analysis and identification of raw materials are essential to achieving the best clinker in the kiln. All clinkers will have a small degree of unwanted elements, but much can be learnt about reaching the desired levels of strength, setting time and crystal content by understanding what makes good- and poor-quality clinker. For a new cement plant the main raw material selection is generally the first and most important phase of development. If the everyday supply of limestone is not...

Swiss cement industry to solve future raw materials shortage

27 January 2014, Published under Cement News

Five out of six cement plants in Switzerland are expected to run out of limestone and marl over the next 10-15 years. As their existing quarries border areas with protected status as landscapes of national significance, they can not be readily expanded. “We have to find a solution that enables a reduction in these areas,” says Georges Spicher, director of cement association cemsuisse. However, the negotiations with the federal government, the cantons and communities are likely to be dif...

Consistent, reliable results

26 November 2013, Published under Cement News

Quality control has been automated to such an extent that we run the severe risk of turning into a generation of button-pushing operators instead of thinking analytical scientists. It is imperative that analytical scientists responsible for the quality control in a plant remain vigilant and regularly evaluate their data because automated sampling systems, plant process control systems, analytical equipment and data management systems need so little human input once set up correctly. By Maggi...

India: industry targets 25% TSR by 2030

12 August 2013, Published under Cement News

The Indian cement industry is failing to realise the potential for alternative fuels and raw material utilisation (AFR), but resolves to raise the thermal substitution rate (TSR) to 25 per cent by 2030, from the current level of less than one per cent. This was the conclusion of a two-day conference on co-processing in cement plants, convened by the Washington-based Institute for Industrial Productivity (IIP) and the Cement Manufacturers’ Association (CMA) of India. In his introductory...

Madras Cements to develop beneficiation plant, India

17 July 2013, Published under Cement News

Madras Cements is developing a limestone beneficiation plant at Alathiyur in Tamil Nadu with a capacity of 400tpd. The company will set up this plant near its 3Mta  cement plant at Alathiyur. The plant will help the company to upgrade cement raw material resources and extend the life of limestone mines. Once Madras Cements commissions the beneficiation unit, it will establish similar facilities at other plants, according to AV Dharmakrishnan, CEO of Madras Cements. Once the beneficia...

Using multiple raw materials

17 July 2013, Published under Cement News

There are very few cement plant locations where a single, locally-available raw material source will be suitable for producing cement clinker. Even when the quantity of imported material is small, the costs of transporting, handling, proportioning and feeding extra raw materials can mount up and with each additional material another variable is introduced. So how does the benefit of sweetening the mix weigh against the disadvantages? How does the benefit of sweeting the raw materials ...