Wikiwaste

Cement Kilns: Difference between revisions

← Older editNewer edit →
VisualWikitext
Arctellion (talk | contribs)
banneredit
2,363 edits
Bin52 (talk | contribs)
authour, banneredit
3,841 edits
m minor text changes
Line 13: Line 13:
* 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.


Not all cement kilns 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 typically has around 65% granulated Blast Furnace Slag mixed with the clinker. Categories of cement materials under BS EN 197-1 <ref>[http://www.bgs.ac.uk/downloads/directDownload.cfm?id=1353&noexcl=true&t=Cement%20raw%20materials%20  Mineral Planning Fact Sheet BGS 2014 Download]</ref> include:
Some cement kilns send 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 typically has around 65% granulated Blast Furnace Slag mixed with the clinker. Categories of cement materials under BS EN 197-1 <ref>[http://www.bgs.ac.uk/downloads/directDownload.cfm?id=1353&noexcl=true&t=Cement%20raw%20materials%20  Mineral Planning Fact Sheet BGS 2014 Download]</ref> include:


{| class="wikitable"
{| class="wikitable"
Line 60: Line 60:
{{#get_db_data: db=engy |from=cementkilns |data=site=site,id=id,company=company,ctype=ctype}}
{{#get_db_data: db=engy |from=cementkilns |data=site=site,id=id,company=company,ctype=ctype}}


More detailed information can be found by clicking through to the site-specific page, (on the map Grinding & Blending sites are coloured green, whilst Kilns are in white):
There are 12 operational cement kilns in the UK, listed below and shown on the map, and more detailed information can be found by clicking through to the site-specific page. On the map the grinding & blending sites of the same 5 key operators are also shown coloured green<ref name = ''ref1''/> - these sites do not have a kiln on site and do not have a permit or any record of handling waste:
[[File:Cementkilns.png|600px|right|Cement Kilns in the UK]]
[[File:Cementkilns.png|600px|right|Cement Kilns in the UK]]
{|Class="wikitable"
{|Class="wikitable"
Line 128: Line 128:


In the table above the [[EWC]] code for the waste is shown as well as the description - [[Hazardous Waste]] is signified by entries where the six-digit [[EWC]] code is marked by an asterisk (*). Note that the two codes [[EWCChap19|19 12 10]] (generally [[SRF]] and also called [[Climafuel]] by [[Cemex]]) and [[EWCChap19|19 12 12]] (generally [[RDF]], but can be used to describe 'process fines' by some operators) which together account for 318,595 tonnes (or 42% of the tonnage recorded) and comes primarily from the processing of [[Residual Waste]]. The other primary codes used as fuel are [[EWCChap19|19 02 08*]] (the solvent based fuels often known as [[Cemfuel]]) and [[EWCChap16|16 01 03]] (waste tyres) which together account for 153,474 tonnes (or 20% of the tonnage recorded) meaning that of the 753,783 tonnes recorded in 2018, 62% were from 4 waste types that all were used as fuel in the cement process. Tonnage of [[MBM]] and [[Wood Waste]], which may have been higher in previous years are not shown to be so high in 2018, as alternative [[Biomass Waste EFW]] plants have been developed for them that have competed with the cement kilns.  
In the table above the [[EWC]] code for the waste is shown as well as the description - [[Hazardous Waste]] is signified by entries where the six-digit [[EWC]] code is marked by an asterisk (*). Note that the two codes [[EWCChap19|19 12 10]] (generally [[SRF]] and also called [[Climafuel]] by [[Cemex]]) and [[EWCChap19|19 12 12]] (generally [[RDF]], but can be used to describe 'process fines' by some operators) which together account for 318,595 tonnes (or 42% of the tonnage recorded) and comes primarily from the processing of [[Residual Waste]]. The other primary codes used as fuel are [[EWCChap19|19 02 08*]] (the solvent based fuels often known as [[Cemfuel]]) and [[EWCChap16|16 01 03]] (waste tyres) which together account for 153,474 tonnes (or 20% of the tonnage recorded) meaning that of the 753,783 tonnes recorded in 2018, 62% were from 4 waste types that all were used as fuel in the cement process. Tonnage of [[MBM]] and [[Wood Waste]], which may have been higher in previous years are not shown to be so high in 2018, as alternative [[Biomass Waste EFW]] plants have been developed for them that have competed with the cement kilns.  
==List of UK Grinding and Blending Sites==
The following sites are listed as grinding and blending sites only, with no cement kiln on site<ref name = ''ref1''/>:
{| class="wikitable"
|-
! Site !! Company !! Process
|-
| Tilbury || [[Cemex]] || Grinding and Blending
|-
| Dagenham || [[Breeden]] || Blending only
|-
| Dewsbury || [[Breeden]] || Blending only
|-
| Theale || [[Breeden]] || Blending only
|-
| Walsall || [[Breedon]] || Blending only
|-
| Barnstone || [[Tarmac]] || Grinding only
|-
| Celtic Ash || [[Tarmac]] || Blending only
|-
| Northfleet || [[Tarmac]] || Blending only
|-
| Seaham || [[Tarmac]] || Blending only
|-
| Scotash || [[Tarmac]] || Blending only
|-
| West Thurrock || [[Tarmac]] || Blending only
|}


==References==
==References==
<references />
<references />
Retrieved from ‘https://wikiwaste.org.uk/index.php/Cement_Kilns’