Electrochemical modification of saponite for manufacture of ceramic building materials

Recycling Prospects for Saponite-Containing Water at Diamond Processing Plants in Arkhangelsk Region, Russia

“…Thus, the research reported in works [28,30,63,93] focused on the physical-technical, and sorption properties of electrochemically modified saponite-containing products to estimate the feasibility of converting them to high-quality ceramic items and heavy-metal sorbents. Having examined the structure and mineral composition of electrochemically modified saponite -a waste of circulating water from diamond-bearing kimberlite concentration, the authors were the first to scientifically and experimentally validate some effective methods affording to manufacture highquality ceramic materials with improved physical-mechanical and decorative properties and heavymetal sorbents characterized by high cation-exchange capacity.…”

“…Saponite is the least studied among the smektites although it is known that in aqueous suspensions it also demonstrates high, and ambiguous, electrokinetic potential values [30].…”

“…The modified saponite-containing product has been used to produce high-brand ceramic bricks with a compressive strength, within the sintering temperature range, of 800-1000 о С of 3 , water absorption 13.60.4 -11.00.3%, and fire shrinkage 1.150.22 % -3.20.3% [30,93].…”

Advanced Techniques of Saponite Recovery from Diamond Processing Plant Water and Areas of Saponite Application

“…The variety of interactions caused by electrostatic and electrokinetic characteristics is of great current interest (see, for instance, [5]). Saponite is the least studied among the smectites, even though it is also known to possess high and ambiguous electrokinetic potential values in aqueous suspensions [30].…”

“…Modified saponite-containing product has been used to produce high-quality ceramic bricks ( Figure 6), with compressive and bending strengths of 800-1000 • C of 61.3 ± 2.8-80.9 ± 3.6 MPa and 11.9 ± 1.7-26.7 ± 2.1 MPa, respectively, within the sintering temperature range [30,95]. The bulk density, water absorption and fire shrinkage of ceramic materials at various sintering temperatures are presented in Figure 7.…”