views from user perspective cement industry
TRANSCRIPT
06 November 2019
Vagner Maringolo – CEMBUREAU, The European Cement Association
VIEWS FROM USER PERSPECTIVE
CEMENT INDUSTRY
REMOVAL STAKEHOLDER WORKSHOP
CEMBUREAU1ABOUT CEMENT2
LEVERS TO LOWER FOOTPRINT3ALTERNATIVE MATERIALS4
BAUXITE RESIDUE5
CONTENT
CEMBUREAU REPRESENTS THE
EUROPEAN CEMENT INDUSTRY
Full members
(18 national associations + 9 companies)
Associate members
Cooperation agreements
2
27
2
CEMBUREAU
CEMENT PRODUCTION LINE
Mineral transformation into
clinker in the rotary kiln
Grinding of clinker and
mineral components
into cement
Preparation of raw
materials
CEMENT PLANT
ROTARY KILN
CEMENT FOOTPRINT
1 tonne cement
CO2-intensive
(~60% from decarbonation
of limestone)
CEMENT CONCRETE BUILDINGS
Cement
(10-15%)
Water
(15-20%)
Aggregates
(65-75%)
CEMENT INTERMEDIARY PRODUCT
CEMENT LOW CARBON FUTURE
2013.06.11_AG_Low Carbon Roadmap
9
PARALLEL ROUTES & LEVERS TO CO2 REDUCTION
Cement
value to
circularity
RAW MATERIALS
CONSTRUCTION
CONSTRUCTION
& DEMOLITION
WASTEConcrete recycling can be
both closed-loop (re-use
in the same application)
and open-loop (re-use in
another application).
Concrete is a low-carbon
product when compared
to many other common
construction materials.
Secondary raw materials from
various industrial sectors can
partially substitute natural raw
materials in cement production.
Co-processing of municipal
and industrial wastes as
alternative fuels in cement kilns
combines both energy recovery
and material recycling.
CLINKER KILN
Both cement and concrete
take up by-products generated
by various industrial sectors
as substitutes for clinker.
CONCRETE CEMENT
Cement
value to
circularity
RAW MATERIALSCONSTRUCTION
& DEMOLITION
WASTE
CLINKER KILN
Concrete recycling can be
both closed-loop (re-use
in the same application)
and open-loop (re-use in
another application).
Concrete is a low-carbon
product when compared
to many other common
construction materials.
Co-processing of municipal
and industrial wastes as
alternative fuels in cement kilns
combines both energy recovery
and material recycling.
CONSTRUCTION
CONCRETE
Secondary raw materials from
various industrial sectors can
partially substitute natural raw
materials in cement production.
Both cement and concrete
take up by-products generated
by various industrial sectors
as substitutes for clinker.
CEMENT
2%
9%
15%
18% 19%22%
28%30%
34%37%
39%41%
43%44%
46%
1990 2000 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017
% of Thermal energy from Alternative Fuels in the Cement sector in the EU-28
ALTERNATIVE FUELS
Source: Global Cement &
Concrete Association (GCCA)
Cement
value to
circularity
RAW MATERIALS
CEMENT
CONSTRUCTION
& DEMOLITION
WASTE
CLINKER KILN
Concrete recycling can be
both closed-loop (re-use
in the same application)
and open-loop (re-use in
another application).
Concrete is a low-carbon
product when compared
to many other common
construction materials.
Co-processing of municipal
and industrial wastes as
alternative fuels in cement kilns
combines both energy recovery
and material recycling.
CONSTRUCTION
CONCRETE
Secondary raw materials from
various industrial sectors can
partially substitute natural raw
materials in cement production.
Both cement and concrete
take up by-products generated
by various industrial sectors
as substitutes for clinker.
Steel - blast-furnace slag
Silicon and FeSi alloys - silica fume
Coal power plants - fly ash
Flue-gas desulfurization (FGD) gypsum
CLINKER SUBSTITUTION IN CEMENT
0%
2%
4%
6%
8%
10%
12%
14%
16%
18%
Austria Poland Germany EU-28 France CzechRepublic
Spain Italy UnitedKingdom
% volume of cement
% of Slag % of Fly Ash
Source: GCCA
Cement
value to
circularity
RAW MATERIALSCONSTRUCTION
& DEMOLITION
WASTE
CLINKER KILN
Concrete recycling can be
both closed-loop (re-use
in the same application)
and open-loop (re-use in
another application).
Concrete is a low-carbon
product when compared
to many other common
construction materials.
Co-processing of municipal
and industrial wastes as
alternative fuels in cement kilns
combines both energy recovery
and material recycling.
CONSTRUCTION
CONCRETE
Secondary raw materials from
various industrial sectors can
partially substitute natural raw
materials in cement production.
Both cement and concrete
take up by-products generated
by various industrial sectors
as substitutes for clinker.
CEMENT
RAW MATERIAL SUBSTITUTION
Si-containing materials
Refractories
Spent catalyst
Used foundry sand
Waste ceramics, bricks, tiles and construction products
Secondary sand
Casting cores and molds which have undergone pouring
Welding wastes
Wastes from flue-gas desulphurisation in solid form
Sands from fluidised beds
Glass waste
Ca sources
Hydrated lime
Gypsum (residual)
Wastes from mineral non-metalliferous excavation
Wastes from stone cutting and sawing
Lime waste
Wastes from cement-based composite materials
Fe-containing materials
Pyrite ash
Secondary iron oxide
Millscale
Waste blasting material
Wastes from the processing of slag
Bottom ash, slag and boiler dust
Machining sludges containing dangerous substances
Al-containing materials
Spent pot linings
Skimmings
Al-dust
Spent katalyst
Si-Al-Ca-Fe containing materials
Fly ashes
Blastfurnace & converter slag
Waste concrete and concrete sludge
Foundry slag
Spent bricks
Minerals from fuels (ashes)
• The alumina content (20 wt%) and clay-like behaviour indicate
that bauxite residue may indeed be valuable as a secondary
raw material as a clinker raw meal substitute (what about Na
content?), which is evidenced by the 2 Greek and 1 Cyprian
cement plants(1) brief using BR in levels between 1.5 - 3.0 wt%
for Portland cement clinker production.
• However, the BR use as supplementary cementitious materials
in blended cement production (as mentioned is the case in
China, India, Ukraine, Russia, Cyprus and Brazil (1)) would
require proof testing and standardisation work.
BAUXITE RESIDUE
(1) According to the REMOV.Al brief.
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