**2.2 Briquetting of mixture prior to vitrification**

The mixed slime and sludge with Na silicate and Şırnak asphaltite slime microwave heated following pressing in 50-mm mold under 3-tons load. The squeezed matter reduced wet solute at a 10% weight rate. The surface area and porosity are measured by the Rigden flow meter in this work. It is generally used for cement surface area measurement. This slime and sludge mixing nearly had a low surface area, as measured by the single-point BET N2 adsorption method, of 11 m<sup>2</sup> /g. Sludge used was at a particle size < 0.1 mm for vitrification and ranging below 0.2 and 1 mm for Şırnak asphaltite slime and Şırnak shale.

**Figure 1.** *The ash and Şırnak asphaltite slime distribution regarding void in gradation in ASTM standard.*

**Figure 2.** *The compaction limits of sludge regarding void in fineness gradation.*

**Figure 1** shows the slime sample fineness and size distribution as solid sludge compost increasing the compaction ability and even fine homogenous mixing. **Figure 2** illustrates the compaction ability of sludge compost under a loading press of 20 kN at size 10 mm diameters.
