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Owner of data set Górazdze Cement S.A. |
Technical purpose GÓRAZDZE CEMENT S.A. offers metallurgical cement of strength class 42.5 with normal early strength (N) is produced at the EKOCEM Plant in Dabrowa Górnicza and at the Górazdze Cement Plant. The main component of CEM III/A 42.5N - LH/HSR/NA cement is Portland clinker (35÷64%), granulated blast furnace slag (36÷65%) and setting time regulator (calcium sulphate).
Metallurgical cement CEM III/A 42.5N - LH/HSR/NA meets the requirements of the PN-EN 197-1 standard "Cement - Part 1: Composition, requirements and compliance criteria for general-use cements" and the requirements of the PN-B 19707 standard "Cement. Special cement. Composition, requirements and conformity criteria".
According to the European standard PN-EN 197-1 "Cement. Part 1. Composition, requirements and conformity criteria for common cements", blast furnace cement CEM III/A 42.5N is a cement with a low heat of hydration - LH.
According to the national standard PN-B-19707 "Cement. Special cement. Composition, requirements and conformity criteria", blast furnace cement CEM III/A 42.5N is a sulphate-resistant cement -HSR and low-alkaline cement -NA.
Portland cement CEM III/A 42,5N-LH/HSR/NA is offered by GÓRAZDZE CEMENT S.A. in bulk.
The following figure 1 is a schematic representation of the cement manufacturing process stages from quarry to cement mill (production stage). The natural raw materials for cement production are mainly calcareous materials such as limestone, sand and alumina-containing materials such as clay or shale, which are widespread. Alternative raw materials, such as different type of ash, slag or other waste materials are used in the process as substitutes for natural ones. Raw resource is preheated using input gases and then fired in a rotary kiln at a temperature of approximately 1450ºC. Currently one of the main fuels used in the process is alternative fuel that is derived from waste and its share is growing. Górazdze, through the use of alternative fuels, tries to reduce environmental damage, which is one of the basic strategic assumptions of the company.
The LCA assessment encompassed the production phase and the following processes/modules: A1 – raw material production: fuel mining, raw material mining, electricity generation, alternative fuel production; A2 – transport: raw material transport; A3 – production of the product: raw meal production, consumption of fuel for firing, electricity consumption for grinding. - |