Sintered sanidine glass-ceramics from industrial wastes

Microwave synthesis of thermal insulating foams from coal derived bottom ash

“…Foam glass, an interesting material has attracted great interest and has been applied in many areas such as building, chemistry and defense fields because of complex properties including low thermal conductivity, low density, incombustibility, etc. [11]. The combination of bottom ash with water glass (sodium silicate) under controlled foaming procedure gave bulk or highly porous materials with surface or/and bulk crystallization.…”

Lead recovery and the feasibility of foam glass production from funnel glass of dismantled cathode ray tube through pyrovacuum process

“…For the manufacture of new CRT, it could be profitable only in the case of an absolute separation of the lead-contained and uncontained glass, because the introduction of lead-contained glass in panel manufacturing is not acceptable for the solarization effect [1]. On the other hand, the [10], glass foam [11,12], glass matrix composites [13,14], glass-ceramics [15,16], and glaze [17]. Although funnel glass recycling is the key point of CRT glass recycling, only limited previous reports discussed funnel glass reutilization [18,19].…”

Micro- and macro-cellular sintered glass-ceramics from wastes

“…[11][12][13][14][15][16][17][18] The sintering approach has recently led to significant innovations, applied to fine glass powders (typically <37 m). 14,15,17,18 Firstly, the same enhancement of crystallization, provided by the high specific surface of fine powders, may lead to the development of phases which are hardly found by applying the traditional procedures. Feldspar and feldspathoid crystals (like sanidine, trikalsilite, nepheline), known to give notably stable glasses, practically unable to crystallize, have been recently found as the main crystal phase of several sintered glass-ceramics.…”

“…Feldspar and feldspathoid crystals (like sanidine, trikalsilite, nepheline), known to give notably stable glasses, practically unable to crystallize, have been recently found as the main crystal phase of several sintered glass-ceramics. 15,17,18 Secondly, using fine glass powders may allow the incorporation of secondary phases, like alumina platelets, 14,15 useful for the preparation of strong glass-ceramic matrix composites. Finally, the fine powders may be useful for the preparation of cellular glass-ceramics, deposited on polymeric foams, by the so-called "replication process" (the polymeric foam models the solid fraction of the final cellular material), 19 or mixed with "foaming agents", i.e.…”