The article analyzes the main technological approaches to controlling the molding properties of ceramic compounds based on opoka-like rocks – highly porous siliceous rocks for the production of large-format wall blocks by rigid extrusion with horizontal voids. Opoka-like rocks, which are siliceous sedimentary formations, have high dispersion, porosity and a significant content of amorphous silica. Their use in the production of building ceramics makes it possible to reduce the density of products, improve thermal insulation properties and reduce energy consumption for firing. The low plasticity of opoka-like raw materials complicates their molding using traditional methods. Therefore, rigid extrusion represents an effective technological solution for producing parts with complex geometries and specified physical and mechanical properties, while reducing the energy consumption of the process, making it preferable for use in modern, environmentally friendly industries.