The clinker factor reduced to 071 in 2017 from 074 in 2010. Reducing the Clinker Factor Reducing the Clinker Factor by partially substituting the clinker used in the composite cement production process with materials that have binding properties also known as mineral components.
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As the promoters of the technology state producing LC3 cement does not require capital intensive modifications to existing cement plants and produces binders with the same performance as OPC.
Clinker factor. What is clinker factor. It is normally about 155. In addition the strength of the cement produced is higher than the standard.
Clinker is a nodular material produced in the kilning stage during the production of cement and is used as the binder in many cement products. The clinker factor varies from 783 to 729. LSFCaO 28SiO 2 12Al 2 O 3 065Fe 2 O 3 Often this is referred to as a percentage and therefore multiplied by 100.
In August 2018 the Global Cement and Concrete Association GCCA said it was taking over the work previously done by the CSI from 1 January 2019. In addition the strength of the cement produced is higher than the standard. For achieving lowest clinker factor typically in the inter blending mode OPC clinker Gypsum should be ground to around 380 to 400 M2kg with 10 to 12 residue on 45 microns while slag preferable slag Gypsum should be ground to around 70 to 75 passing 20 microns with Blaines surface of around 400 420 M2kg.
Cement is formed by burning limestone with clay. It can improve the cement fineness to 3848cm2gr and decrease the sieving R45μ to 10. The clinker factor varies from 783 to 729.
Applied to clinker it is calculated as. The binders known as blended or hybrid alkaline cements are obtained by alkali-activating cementitious blends in the Na2O-CaO-SiO2-Al2O3-H2O system. It is generally accepted that the production of 1 t of ordinary Portland cement OPC creates over 800 kg of CO 2.
The present paper discusses the results of. The rough cinder lumps are called clinker and are shipped in this form to avoid the difficulties of carrying cement powder. STOWAGE FACTORS cbftmt 1 cbm 3531 cbft Information in the below columns is merely a guide and no substitute for checking accurate stowage factors from local agents andor shippers or for inserting appropriate figures in contracts of carriage.
LC3 cements 5 have a clinker factor of only 50 with the rest being 30 calcined clay metakaolinite 15 limestone and 5 gypsum. The clinker factor is therefore 065 x the amount of raw mix. The process of clinkerization signifies conversion of raw meal into clinker minerals mainly consisting of C4AF Aluminoferite C3A Aluminite C2S Belite and C3S Alite phases along with small percentage of free lime CaO MgO Alkalies Sulphates etc.
The majority of Portland cement clinker manufactured around the world has a lime saturation of between 90 and 100. This means that c155 tonnes of raw mix are required and c055 tonnes of CO2 are lost due to calcination of the CaCO3 in the raw material. The absence of this setting agent means that handling in non-dry conditions is not so critical and loadingdischarging can take place in adverse weather conditions if need be.
As far as sustainable development is concerned this method is beneficial because it. The results show that the optimal clinker factor is at 745 with the CGA addition 300 ppm. Lunch Talk Southeast and South Asia CHBU 2012-09-12 Plant practices score Vs Clinker factorLS.
Plant can improve clinker factor with little capex by improving availability and storage of raw materials Technology can be an important lever to increase clinker factor but will need capex. 1 1 Loss on ignition of kiln feed. Clinker C3S C2S C3A C4AF Cement C3S C2S C3A C4AF Burnability index for clinker Burnability factor for clinker Burning temperature minimum.
The incentive to reduce the clinker factor in cement products is two-fold. The results show that the optimal clinker factor is at 745 with the CGA addition 300 ppm. The conversion taking place in kiln system as raw meal is heated gradually to.
The true raw meal to clinker factor is given by. The major variation from plant to plant arises because of the dust loss from the kiln feed which varies from kiln to kiln dependent on the collection efficiency of the top stage preheater cyclone. This burning produces rough cinder lumps that are later crushed to a fine powder to produce cement.
The primary motivation is to reduce the energy consumption and CO 2 emissions associated with cement clinker production in rotary kilns. It can improve the cement fineness to 3848cm2gr and decrease the sieving R45μ to 10. It is produced by heating limestone and clay to the point of liquefaction at about 1400C-1500C in the rotary kiln.
Just like finished cement however clinker can be extremely dusty and is subject to shore-based anti-pollution regulations. The Lime Saturation Factor is a ratio of CaO to the other three main oxides. Bulk Clinker Stowage Factor 2530.
The lumps or nodules of clinker are usually of diameter 3-25 mm and dark grey in color.
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