logotop2024.svg

Monday, 10/03/2025 | 04:18

Case study

Lam Thach Cement Saves Energy in Production by Processing Waste

14:33 - 06/01/2025

vsuee

The cement industry is estimated to consume around 110–122 million kWh annually if operating at 100% capacity. Finding solutions to save energy in production has always been a priority for cement manufacturers, including Lam Thach Cement Plant.

Since March 2020, Lam Thach Cement has invested in a co-processing technology line to treat conventional industrial waste, using it as an alternative fuel to coal for the clinker kiln. The equipment line can replace up to 40% of coal usage. The co-processing technology is equipped with an advanced, fully automated system for inspection, measurement, and control, allowing for optimal use of resources and energy efficiency.
According to Mr. Vu Trong Hiet, Deputy General Director of Quang Ninh Cement and Construction JSC, the largest energy consumption for cement plants is coal used in clinker production. The company now replaces part of the coal with waste products from footwear, leather, paper, and garment factories. These conventional industrial waste materials, which cannot be recycled but release energy when burned, are collected to substitute for coal usage. Currently, Lam Thach Cement saves 13.2 billion VND annually by co-processing conventional industrial solid waste as a substitute fuel in clinker kilns.
Additionally, the company has implemented several solutions to reduce electricity consumption in production, such as installing inverter devices to lower electricity usage and installing rooftop solar panels for daily operations. They are preparing a feasibility study report to invest in a system that generates electricity by utilizing waste heat from clinker kilns, with construction expected to begin by the end of 2024.
Lam Thach Cement saves 13.2 billion VND annually by co-processing conventional industrial solid waste as a substitute fuel for clinker kilns.
The Lam Thach Cement Plant operates an advanced and modern production line for clinker using a rotary kiln with a dry method, equipped with a five-stage cyclone heat exchanger tower and a decomposition furnace. This setup has increased kiln capacity from 1,200 tons/day to 1,800 tons/day and reduced heat consumption from 950 kcal/kg of clinker to 760 kcal/kg of clinker.
According to Mr. Pham Truong Son, Deputy Head of the Central Technology Department at Lam Thach Cement, the main tasks in the central control room involve monitoring, supervising, and adjusting the entire system’s operations: from raw material preparation, raw material grinding, clinker production, to cement grinding and packaging. The production line is modern, fully synchronized, and operated automatically. All activities are monitored via operational screens and cameras 24/7.
Ms. Mette Moglestue, Deputy Ambassador of Norway, stated that through the project, Norway hopes to help Vietnam’s cement industry enhance its capacity for handling non-recyclable plastic waste and contribute to achieving Vietnam's net-zero emissions target by 2050.
As a production industry that uses large volumes of fossil fuels, Lam Thach Cement’s co-processing of conventional industrial waste is expected to reduce the consumption of non-renewable fossil fuels, lower production costs, increase competitiveness, and contribute to reducing CO₂ emissions.
The Deputy General Director of Quang Ninh Cement and Construction JSC shared that the company has significantly reduced its coal consumption by using alternative materials. Electricity consumption has also decreased by about 10% compared to typical energy usage for cement and clinker production. Shortly, the company will continue investing in a waste heat recovery power generation system. Expected to be operational by the end of 2025, this system is projected to provide about 70% of the electricity needed for production.
The application of energy-saving solutions in industries, including the cement sector, is essential for helping businesses increase profits, protect the environment, and conserve national energy resources.

More

LATEST NEWS

Consultation on Amendments of the Law on Energy Efficiency and Conservation in the Northern Region

05/03/2025

EVENTS

  • 07/01/2025

    Roundtable Meeting "Energy Efficiency - Invest Effectively"

  • 10/01/2025

    Roundtable Meeting "Energy Efficiency - Invest Effectively"

  • 25/06/2024

    Training course on "Procedure for the implementation and issuance of RSF guarantees"

Participating Financial Institutions