Typically the Dry Method LECA Production Process
LECA production process features The raw material for LECA production is mostly sedimentary clay materials, less frequently - metamorphic rocks (argillite, clay-based slate and other stone-like materials). Their composition is intricate and they also include both clay minerals (hydrous micas, kaolinite, etc. ) and field spar, quartz, carbonates, organic and iron admixtures. So what is the uncooked material for creation of this building material? Clays that contain no more than 30% of quartz are the best material for creation of LECA. Specific research is conducted to determine if the particular material is suitable for production. The primary requirements for the raw materials: 1. capability to swell up during baking; 2 . high fusibility; 3. a specific swelling-up interval. Sometimes special additives are released into raw materials to raise the swelling-up coefficient. Organic (diesel fuel, fuel oil residue, and so forth ), ferruginous substances, geological materials (perlit...