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Owner of data set Breedon Brick Ltd |
Technical purpose The cement is manufactured at the Breedon Cement Ireland factory at Kinnegad, Co. Westmeath, Ireland, in accordance with I.S. EN 197-1:2011, Compositions, specifications and conformity criterial for common cements.
The main material components of the cement are clinker, ground limestone and gypsum. A small amount of bypass dust is added as well as a chromate-reducing agent to the cement. A grinding aid is also added to assist in the grinding process.
The clinker comprises the firing of the following products in the kiln at 1,500OC: limestone, shale, silica clay, silica sand, with small amounts of waste water treatment plant sludge and flue dust. A1 Raw materials supply: The raw materials are limestone, shale, clay, sand for the clinker, and then gypsum, and minor additional constituents (inorganic, comprising no more than 5% of the cement), are added to the clinker to make the final cement product.
A2 Transport: This module covers the impacts of the transport of the raw materials and fuels to the production site.
A3 Manufacturing: The main raw materials for clinker, limestone, shale clay and sand, are quarried on site, crushed to smaller sizes and mixed to create a homogenous mix. To this is added crushed shale (clay) and sand.
These are then pre-heated before being fed into the cement kiln., where they are burned with a mixture of coal, fuel oil, and alternate fuels: solvents, meat & bonemeal and solid recovered fuel (SRF). The material that emerges from the kiln is clinker. The clinker is then cooled and transported by conveyor belt to the clinker store, and from there to the cement mill, as and when needed. The cement mill grind the clinker and additions as the mill rotates on its horizontal axis. The clinker is inter-ground with additions of limestone and gypsum, and minor additional constituents of by-pass dust, chromate-reducing agents, and a grinding aid (to increase grinding
efficiency). |
