GREEN MANUFACTURING

GREEN MANUFACTURING

 
Our approach to the planet focuses on minimizing negative environmental impacts and where possible strengthening positive impacts while also improving performance. As a pioneer in the production of construction material and waste management in south Vietnam, INSEE Vietnam has always taken our environmental impact into account when designing our operating procedures with the goal of making these processes environmentally sound. 
 

CEMENT MANUFACTURING PROCESS

 
Image: Innovative technology with environmental protection initiatives
 
Cement is produced from raw materials such as limestone, clay, and sand. These raw materials are quarried, crushed, nely ground, and blended to the correct chemical composition. Small quantities of iron ore, alumina, and other minerals may be added to adjust the raw material composition. Typically, the ne raw material is fed into a large rotary kiln (cylindrical furnace) where it is heated to about 1800°C. The high temperature causes the raw materials to react and form a hard-nodular material called “clinker.” The clinker is then cooled and ground with gypsum and INSEE Vietnam has earned its a reputation for delivering commercially superior solutions for our customers through installing state-of-the-art equipment and implementing processes which ensure the most efficient and green environmentally sound manufacturing, with the utmost attention being paid to environmental protection.

VERTICAL ROLLER MILLS (VRM) REDUCE ENERGY CONSUMPTION

After the kiln, cement grinding mills are the second highest energy consumer at the plant. At INSEE, we are proud to operate Vertical Roller Mills (VRM), which require higher competent maintenance from mill operators, from material preparation to quality control, but this investment pays dividends. According to collected data from INSEE Vietnam’s Hon Chong Cement Plant and Thi Vai Grinding Terminal, VRM finish-grinding consumes about 20% less energy than semi-finish grinding with a roller press and ball mill. We have invested 20 years in mastering and continually upgrading the VRM operation through trials and error. Many generations of engineers and operators at our plant have diligently worked to optimize the system

 

BAG FILTERS TO REDUCE DUST EMISSIONS

Hon Chong – Kien Giang, where we have installed one of the most modern cement manufacturing lines. As an on-going process, further investment to reduce emission was carried out and the Electrostatic Precipitator - de-dusting for the kiln exhaust gas –has been replaced by more sustainable solution: bag filters. This investment helps advance our sustainable development efforts. The bag filter was successfully implemented in March 2013, yet another step in our Hon Chong Plant’s journey towards an improved Environmental Performance Index. Dust emissions at the main stack of Hon Chong Plant is approximately 10mg14.5mg/Nm3; well below the limit required by Vietnamese law of 100mg/Nm3 (QCVN 41:2011).