Cement News tagged under: aluminium
Lafarge Canada, Geocycle Canada and Rio Tinto partner for circular economy project19 October 2020, Published under Cement NewsLafarge Canada, Geocycle Canada and Rio Tinto, North America’s only primary aluminium producer, are working together to reuse waste from the aluminium smelting process to make cement. The circular economy project aims to reduce the need to extract new raw materials and create more value from waste. Geocycle Canada, part of Lafarge Canada, and Rio Tinto have developed a new product, Alextra, made from spent pot liners that would otherwise be sent to landfill. Alextra is the result of years ... |
Aluminium and iron in clinker06 February 2019, Published under Cement NewsAluminium and iron are two of the key components in Portland cement clinker. Varying their presence in clinker can have significant effects on the final clinker. Arthur Harrisson looks at some of the impacts of such variations. Figure 1: light grey aluminate and white ferrite very slowly cooled. The hexagonal blue alite crystal below centre is 30µm across The four essential constituents of Portland cement clinker are usually listed as: • calcium oxide (CaO or, in cement chemi... |
Out of aluminium waste23 February 2015, Published under Cement NewsTo reduce natural raw material use, the cement industry is increasingly considering byproducts from other industrial processes such as spent pot liners supplied by the aluminium industry. However, these often need to be refined to adapt them to the demands of the end-product. By Dr Yves C Zimmermann, Regain Services Pty Ltd, Australia. Figure 1: molar alkali-sulphur balance in Portland cement clinker Refined byproducts derived from the primary aluminium industry’s spent pot lini... |
Page
1
of
1
1