Cement News tagged under: clinker

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Loss on ignition

28 September 2016, Published under Cement News

The loss on ignition of a raw material, cement or a clinker sample is the amount of weight lost through raising the temperature of the material to a predetermined level. As an indicator it can be used to monitor and improve the quality of the final product. Clinker stored outside in wet conditions will experience an increase in LOI Weight loss during heating can be due to the evaporation or volatilisation of a variety of components of the sample. Water is lost at 100-105˚C, orga...

Bangladesh: river vessel worker strike affects imports

26 August 2016, Published under Cement News

The import of clinker in Bangladesh has been affected as a result of the indefinite nationwide strike by Bangladesh River Vessel Workers' Federation (BRVWF), who demand a fixed minimum wage, improved compensation in case of accidental death and improved security.  Five vessels carrying around 200,000t of clinker and a ship loaded with limestone have been waiting at outer anchorage of Chittagong Port to offload their cargo through lighter vessels, which are currently part of the strike. Th...

Vietnam: cement and clinker sales reach 38.7Mt in 1H16

13 July 2016, Published under Cement News

Vietnam's Building Material Department, under the Ministry of Construction, reports that cement producers in the country sold 38.7Mt of cement and clinker in the first half of this year, rising 12.4 per cent from a year earlier. Therefore, the industry has met 51.01 per cent of its whole-year target. The Ministry of Construction forecasts that Vietnam's sales of cement and clinker will rise 4-7 per cent YoY to 75-77Mt in 2016. A total of 29.92Mt of cement and clinker were sold domestic...

Red rivers of segregation

09 March 2016, Published under Cement News

This month’s Technical Forum ponders the tendency of particulate solids to segregate at various stages of the cement manufacturing process with critical implications, especially in the clinker cooler. Red rivers are caused by particle segregation in the cement production process and can cause premature equipment failure As this month’s Technical Forum focusses on the phenomenon of segregation in the cement manufacturing process, let’s start with a definition of segregation. ...

Clinker cooling

16 March 2015, Published under Cement News

Descriptions of the formation of cement clinker generally concentrate on those reactions that take place as the kiln feed heats up and passes through the process to the burning zone. The part of the operation after the burning zone and up until the clinker’s eventual delivery to the cement mill can also have a significant effect on the quality of cement produced. Figure 1: zoned C3S crystal with C2S inclusions in a finely divided groundmass. (Field of view is 90µm) In a precalci...

HeidelbergCement inaugurates Scantogo clinker plant, Togo

12 March 2015, Published under Cement News

HeidelbergCement inaugurated the 1.5Mta new greenfield Scantogo clinker plant in Togo on 6 March 2015. The new US$250m plant is located at Tabligbo, some 80km north east of the capital city Lomé. More than 2000 guests attended the ceremony, among them the president of the Republic of Togo, the president of the National Assembly and the German ambassador in Togo. With the Scantogo investment, HeidelbergCement has become the largest German foreign investor in Togo. The new US$250m gre...

Iran halts clinker production for 30 days

20 January 2015, Published under Cement News

Iran has halted the production of clinker for 30 days, effective 14 January 2015. Abdolreza Sheykhan, an official with Iran's Cement Producers Association, said that the country currently has 17Mt of clinker in store, Iran’s Fars News Agency reported last week. “We have stopped producing clinker in order to turn the current amount to cement,” Mr Sheykhan said.

Pakistan: Port Qasim PIBTL starts civil works

28 November 2014, Published under Cement News

Civil works have started on the bulk cement handling project at Port Qasim of Pakistan International Bulk Terminal Ltd (PIBTL). Earlier this year, PIBTL awarded the PKR12.5bn EPC contract to China Harbour Engineering Co Ltd (CHE). The technical specifications relating to the plant and the equipment were finalised and PIBTL has appointed a German consultant to procure the equipment, which is expected to be finalised in the coming year. PIBTL will be the country's first terminal to hand...

Mozambique: Cimentos da Beira awards Ambrian subsidiary purchasing contract

19 November 2014, Published under Cement News

Ambrian PLC said Monday that its wholly-owned subsidiary Ambrian (Singapore) Pte Ltd has entered into an agency agreement with Cimentos da Beira Ltda. Under the agreement the company is to be exclusively appointed as Cimentos da Beira's worldwide purchasing agent or supplier of raw materials for producing cement products at its grinding and cement packing operations in Beira, Mozambique, for eight years. The Beira plant is expected to commence operations at the beginning of 2015, and o...

Reducing LSF

13 October 2014, Published under Cement News

Just over a year ago an article in ICR discussed the possibilities for reducing CO 2 emissions from a cement plant. 1 One option was to use less limestone in the kiln feed, thus reducing the CO 2 released by calcination (both by dissociation of CaCO 3 and because most fuel is used in calcination) and making the kiln feed easier to burn in the burning zone (which therefore requires less fuel). But what are the quality implications of such a reduction and how might they be overcome? ...