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Cahya Mata
Sarawak
Berhad
S U S T A I N A B I L I T Y
R E P O R T
2 0 1 6
MATERIALS MANAGEMENT
CMS does not believe in wastage when it comes to the
management of materials. With the aim of reducing the use
of natural resources in our operations where suitable, we
continue to research and innovate so as to findmore ways in
which we can replace rawmaterials with recycled resources.
Alternative Fuel and Raw Materials Committee
During the year in review, our Alternative Fuel and Raw
Materials Committee held four quarterly meetings in
which they focused primarily on the suitability of the
conversion of waste into clinker or cement raw materials.
In line with their discussions, all wastes from Samalaju and
Samajaya Industries have been tested and research and
development processes have taken place.
Reusing Waste in the Production of Clinker
Following its extensive research in using Phosphogypsum
(PG) as a replacement for limestone, our clinker plant
has come to the conclusion that the waste material is
viable as a material replacement. We have plans to
purchase the waste material from the identified source in
preparation for MPA – PG in 2017 which will be produced
as a by-product after 2018. The plant has also considered
replacing its Light Fuel Oil (LFO) with Residual Fuel Oil.
We have sourced several recycled oil suppliers in the
Kuching area.
The plant is also looking to substitute its use of limestone
by up to 3% with its current replacement of sludge, old
kiln bricks and ash. In line with this initiative, our Cement
Division’s Environmental Team has contacted all the waste
generators’ waste management team from the Samalaju
and Samajaya Industrial Areas to submit Regulation 7/
Special Management applications to the Department of
Environment (DOE) Putrajaya. Once we have obtained
the approval from DOE, we will start the process of
industrial trials.
Tyre-derived Fuel
In an effort to create sustainable energy through the
recycling of waste materials, CMS Clinker Sdn Bhd began
to process tyre-derived-fuel (TDF) in 2015 by burning
small quantities of shredded tyres purchased from a
local-based supplier to manufacture clinker. TDF is a
fuel derived from scrap tyres of all kinds and it produces
the same energy as petrol and approximately 25% more
energy than sub-bituminous coal.
As the trials did not produce any significant negative
effects at the clinker plant, the Company begin to
actively seek the relevant approvals from Governmental
authorities for the commercial production of TDF. In 2016,
we did not co-process any TDF, choosing to focus instead
on the approval process with the relevant authorities and
sourcing out several TDF suppliers within Kuching area.
With approval from The Department of Environment
Sarawak and The Natural Resources and Environment
Board Sarawak, we will co-process about 300 MT TDF
from April 2017 onwards under strict trial programmes.
The Company has also established a long-term TDF
supply contract with ZHA Environmental Sdn Bhd, a
Sarawakian based used-tyre recycling company.
Manganese Slag Premix Aggregates Replacement for
Road-based Materials
In collaboration with CMS Quarries Sdn Bhd, Samalaju
Industries Sdn Bhd and Sakura Ferroalloys Sdn Bhd,
CMS Pavement Tech Sdn Bhd from our Construction &
Road Maintenance Division has been researching the
possibility of using manganese slag sourced from the
Samalaju Industrial Park as aggregates for road-based
maintenance and construction work. In the latest stage
of the project, the companies recently completed a
preliminary trial stabilisation on manganese slag road
base at Sakura Ferroalloys. They are currently running a
field trial on the pavement, upon which post construction
monitoring will be carried out upon completion of the
trial. Other potential uses for the mix such as ready-mix
concrete, premix, etc., are undertaken by the respective
Divisions and companies within the Group.
Cold in Place Recycling (CIPR)
Environment
CMS Pavement Tech Sdn Bhd is a specialist provider of
pavement works covering construction, rehabilitation
and maintenance. As the conventional method of
pavement rehabilitation tends to be costly, inefficient,
slow and environmentally-unfriendly, CMS Pavement
Tech specialises in using cement stabilisation technology
to reconstruct and rehabilitate pavements using the
Wirtgen WR2500S machine. In this new method, existing
pavements are recycled, stabilised with cement and
enhanced with a higher strength, new bounded base. The
Company is also capable of performing stabilisationworks
using other agents such as lime, emulsion, bitumen and
soil stabilisers. As an environmentally-friendly company,
CMS Pavement Tech promotes sustainable engineering
and construction using locally-sourced, alternative
materials. By tapping on the Company’s technology,
customers can take advantage of cost savings, quicker
construction, as well as improved pavement performance
and design life.
In 2016, the total amount of recycling-in-place that the
Company conducted amounted to 58,000 MT. The total
amount of off-site milling conducted during the year was
750 metres.