Granulated slag


Residual product of the steel-making process (steelworks blast furnaces). It has a dirty, grey, lumpy-like appearance in granulated form. Has iron content of 0.5%. Bulk density: 1,111 kg/m3.


Non-IMSBC Code information: it is basically molten slag broken up into granules and quick quenches. There are 3 general methods of granulation; namely (a) running the molten slag into a pit of water; (b) using a jet of high-pressure water to break up the stream of molten slag as it falls into the pit; and (c) using a mechanical revolving device with relatively small amounts of water. Used mainly for road construction. It is also primarily grounded into a cement known as ground granulated blast slag. 

Trade Names (Synonyms)
Slag sand - slag, granulated


If you are a member, please login using the orange button at the top of the page to view the full article, or register.

If you are unsure of your membership, wish to change your membership status, or wish to become a member please contact


Got a question or some feedback?

Contact Maritime Information

In order to ensure that the BIMCO cargo database contains updated information as far as possible, we welcome any feedback in the form of comments, response or current information or data regarding a specific cargo.

Email them

IMSBC Code webinar

BIMCO's Ai Cheng Foo presents the IMSBC Code, potential pitfalls and use.

IMSBC Code webinar

A one-hour long webinar session on the IMSBC Code, highlighting two very relevant issues for members; i.e. on “How to carry bulk cargoes safely – a shared risk?” and “ What is it – identifying cargo hazards under the IMSBC Code”.

Latest Related News

View All News


Chartering help & advice

This section contains a comprehensive source of information and guidance on chartering related matters. You will find invaluable information on many aspects of chartering distilled from our many years’ experience on advising members.