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Cement Kilns: Difference between revisions
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* Stage 6 - '''Packing and Shipping''': the cement is conveyed from grinding mills to silos where it is then packed in bags. | * Stage 6 - '''Packing and Shipping''': the cement is conveyed from grinding mills to silos where it is then packed in bags. | ||
The introduction of waste materials - or 'Alternative Raw Materials' as coined by the industry - can be as part of the kiln phase | The introduction of waste materials - or 'Alternative Raw Materials' as coined by the industry - can be as part of the kiln phase or the final grinding stage and the percentage of recycled content of cement was almost 10% across these in 2018. | ||
Not all cement kilns have have the total 'end to end' process on site, with some sites producing the clinker for subsequent grinding, blending and packing at a different site. This might include, for example, the introduction of other materials, such as Blast Furnace Slag to produce a Blast Furnace Cement - a highly sulphate resistant cement that can have up to 65% granulated Blast Furnace Slag mixed with the clinker. As Blast Furnace Slag is considered a primary input for this type of cement, it is not defined as waste and therefore is not normally captured in [[UK Waste Tonnage]]. | Not all cement kilns have have the total 'end to end' process on site, with some sites producing the clinker for subsequent grinding, blending and packing at a different site. This might include, for example, the introduction of other materials, such as Blast Furnace Slag to produce a Blast Furnace Cement - a highly sulphate resistant cement that can have up to 65% granulated Blast Furnace Slag mixed with the clinker. As Blast Furnace Slag is considered a primary input for this type of cement, it is not defined as waste and therefore is not normally captured in [[UK Waste Tonnage]]. | ||