Germany: Rock Tech Lithium has signed a memorandum of understanding with Schwenk Zement to utilise lithium production by-products from Rock Tech’s Guben converter for use in cement manufacturing at Schwenk's facilities. The primary objective of the partnership is to develop industrial applications for residues generated from Rock Tech's lithium-hydroxide production, specifically spodumene leach residues. During initial studies conducted by the Institute of Technologies and Economics of Lithium, the leach residues demonstrated potential as supplementary cementitious materials (SCMs) for use in cement manufacturing, offering benefits such as reduced carbon emissions and cost savings.
The partnership aims to process up to 200,000t/yr of by-products by 2029, with Schwenk planning investments in drying, grinding and storage facilities for the leach residues.
Johann Trenkwalder, member of the management board of Schwenk Germany, said "Ensuring the future supply of sufficient quantities of high-quality cement grinding materials is of great strategic importance for Schwenk. The leached spodumene concentrate produced during the operation of the planned converter in Guben represents an interesting and regionally-available source of SCMs."
