Phosphorus
slag
Phosphorus slag is a by-product of the production of yellow phosphorus. Recent research has shown that a new concrete-like material (carbstone) can be formed, using Phosphorus slag and CO2 as a binder.
Phosphorus slag has the capacity to capture up to 350 kilogram of CO2 per tonne. This material has the potential to radically alter the chain of concrete production.
The Worldwide production of phosphorus slag amounts to over a million tonne per year. Despite several possible applications in the construction industry, only about 20% is currently used. By using this material in the production of carbstone, waste Phosphorus slag and emitted CO2 can be reintroduced into the concrete industry.
VITO is an R&D organization specialized in clean technology and sustainable development.
VITO in cooperation with ORBIX invented the Carb stone process. The carb stone process makes it possible to create a range of different products like roof tiles, clinkers and building blocks, while permanently sequestering CO2 in the process.
ORBIX is a company specialising in the recycling of slag from steel plants. They have been able to reclaim several materials from steel waste flows and convert them into metals and minerals to be used in the steel and construction industries.
