Technical Visit to Green Island Cement plant

Organizer：

Materials Division

Date, Time & Venue

8 May 2021 Saturday; Time: 9:00 am -12:30 pm

Assembly at Tuen Mun Station (to be confirmed)

Programme Highlights

Green cement plant is localized manufacturer in producing of cement product. Through the visit, the participant can understand how cement products are manufactured from raw materials, their quality assurance and how the cement process helps to reduce the environmental problems of Hong Kong. In January 2021, the cement plant starts to produce Granulated Blast-furnace Slag (GGBS) from its newly installed grinding facility. Participant can learn how this low-embodied-carbon building material be used to replace the carbon-intense Portland cement, and has a physical look at the structures built by GGBS concrete.

Registration & Enquiries

The visit is charged HK$50 for transportation. The maximum of participants is 20. Registration is required. The applicants please fill the HKIE registration form (Standard Reply Form) and email to lamchising@hotmail.com. the successful applicants will be confirmed on or before 30 April 2021.  CPD certificate will be issued after the seminar/webinar. For enquiries, please contact Ir CS Lam at 91527659.

By Ir LAM Chi Sing

A technical visit was conducted to Green Island Cement Plant on 8 May 2021. The representative introduced their company background through video clipping and the work flow of cement manufacturing from raw materials to finished product. The Company was originally established in Macau in 1886, then established in Hong Kong in January 1887. In 1982 the company was moved to Tap Shek Kok Tuen Mun for operation until now. A workflow of manufacturing cement was introduced from raw materials such as copper slag, silica slag, limestone and ash to finished product. The raw materials are unloading in dock and Jetty by ship unloaded, delivered by belt conveyor system to storage hall or raw mill for drying and grinding to become raw mix, then transfer to preheater tower for heating process and then sinter in rotary kiln up to 1450 degree Celsius to become clinker and stored in clinker silos, further fine grinded in finish mill to become cement and finally delivered to customer in bags or in bulk by cement tanker.

The company has also introduced their sustainability on reducing carbon dioxide emission for environmental protection. The limited use of natural resource, reduce pollution control, adopted waste management, reduce water and carbon dioxide footprint. To achieve their sustainability with complying emission scope 1 and scope 2, the use of pulverized fuel ash (PFA) and ground granulated blast-furnace slag (GGBS) to mix with raw materials for clinker. In addition, the adoption of co-processing using cement kiln saves a lot of energy and reduce carbon dioxide emission, thus also reduce the need for incineration and landfilling.

After the talk, we were led to visit laboratory room, control room, limestone stock yard, operation yards, to be commissioning of GGBS store yard, and finally visited to packaging machine workshop.

The visit ended with question-and-answer session. On behalf of the Materials Division and participants, we thank Ir Raymond Cheung and Kelvin Ho for their presentation and escorted us for the plant visit with provision of knowledgeable production line.

Words 332.

Group Photo with host organizer