Hoffmann Green Launches H-Clay, a Cold Clay Processing Technology

A Cold Process without Calcination or Flash-Calcination

H-Clay enables the processing of clay using a cold method, avoiding traditional energy-intensive and CO₂-emitting calcination or flash-calcination processes. This technology transforms various types of clay into a co-product that can be integrated into the formulation of low-carbon cements, following the model used by Hoffmann Green with other residues like blast furnace slag. The process provides access to a vast global source of raw materials while reducing the energy requirements for their processing.

A Lever for Diversification and Technical Performance

This innovation enhances Hoffmann Green's ability to design solutions tailored to the current challenges of the construction sector: CO₂ emission reduction, resource preservation, industrialization of more efficient processes, and materials compatible with structural concretes. H-Clay also represents a diversification avenue, allowing the group to access new market segments and expand its application areas. The launch is a continuation of the innovation strategy and consolidates its position as a technological leader in clinker-free cements.

An Expanding Technological Portfolio

Hoffmann Green currently has a portfolio that includes four innovative technologies targeted at the construction markets: H-UKR (based on alkali-activated slag), H-IONA (supersulfated cement), H-EVA (alkaline-based ettringite technology), and H-P2A (geopolymer technology). The group's goal is to increase the number of innovative clinker-free cements to six by 2030. Julien Blanchard and David Hoffmann, co-founders of the group, state that this innovation 'perfectly illustrates our ambition: to develop disruptive technologies capable of significantly reducing the carbon footprint of cement, while meeting the technical requirements of the construction market.'