PRO-PROCESSING
AND CO-PROCESSING SERVICE
Pre-processing
Wastes occur in different forms and qualities.
Some types of waste cannot be consumed in the cement kilns directly, but must undergo a preparation process. The transformation of wastes to homogeneous forms requires certain standards. This step produces a waste product with defined characteristics that complies with the technical specifications of cement production and guarantees that environmental standards are met. Pre-processing plant usually stores incoming waste and contains grinding, mixing, and homogenization processes.
Co-processing
This is the most socially and environmentally responsible method for waste management.
A definition “Co-processing”
Co-processing effectively means several concurrent processes at work. First, your waste is being totally eliminated. Second, there is a recovery of small amounts of energy being achieved, energy that would otherwise be lost if your waste was landfilled. Third, the capture and conversion of physical properties, including mineral content into “clinker form” and (after grinding) “into cement”.
Co-processing offers several specific advantages
  • Ultra high cement kiln gas temperatures (up to 1,450°C and gas temperatures reaching 2,000°C) and the long residence time represent ideal conditions for the complete destruction of any organic material
  • Combustion gases are cleaned in a counter flow process against in-coming calcium oxide feed material (a basic ingredient of cement. Calcium oxide binds many gases and works as a scrubber.
  • Co-processing is a highly efficient solution. It eradicates waste, recovers energy otherwise lost and reduces overall greenhouse gas emissions otherwise released by incineration, decomposition or degradation in dumps or landfill sites.
What makes co-processing a better solution?
  • Companies: complete thermal destruction of waste reduces need for onsite waste storage reduces liability reduces risk to corporate reputation enhances your regulatory compliance efforts, particularly with hazardous waste.
  • Communities: less waste going to nearby landfills preserves energy resources for future generations jobs created in co-processing industry.
  • Environment: fewer natural resources are taken from the earth, lower CO intensity for facilities that use co-processed waste as fuel reduces emissions of methane from landfills less material in landfill helps reduce chance of soil or water pollution.
Some specific points to remember
We follow some important general principles based upon Millennium Development Goals and the Johannesburg Declaration on Sustainable Development
  • Our service is designed to provide an environmentally sound resource recovery option.
  • It is provided in line with relevant international environmental agreements, namely the Basel and Stockholm Conventions.
  • It is undertaken only if emissions into the air shall not be higher than those from cement production using traditional fuel and raw materials.
  • The quality of the cement product shall remain unchanged, and should not have any negative impact on the environment.
  • INSEE Ecocycle, a subsidiary of Siam City Cement PLC are qualified as recognized by the appropriate authorities and have good environmental and safety compliance track records.
Types of waste co-processed by INSEE Ecocycle
We are able to accommodate a wide range of waste, which in most cases is subjected to pre-processing procedures, requiring engineering expertise to ensure the waste is suitable for co-processing.
  Refinery catalyst
  Paint wastes
  Foundry sand
 
Waste water treatment filter cake
  Plastics
  Resin wastes
  Fly ash/bottom ash
  Contaminated materials
  Expired products
  Oil sludge
  Off-specification products
  Mold resin
  Packaging materials
  Oil filter
  Printed circuit
board off cuts
  Rubber wastes
  Refinery wastes
  Pirate goods for
a secure destruction