Проницаемые стеклокристаллические материалы для фильтрации жидких сред

Abstract

The article is devoted to development of compositions of fusible glasses on the basis of systems of R₂O–RO–Al₂O₃–B₂O₃–SiO₂ (R₂O – Na₂O; RO – CaO, MgO, ZnO) and establishment of technological parameters of receipt of multifunction glass-crystalline filter materials high-performance operating properties. Grounded a choice of effective gas-forming agents is reasonable for the receipt of porous materials with a highly developed penetrating structure. The optimal technological parameters of receipt of filter glass crystalline materials certain are a temperature of burning – 740°C with isothermal self-control – 4 min, duration of burning – 30 min. Complex of high operating properties of the developed filter materials: heat-resistance 400÷450°C, chemical resistance 99,10÷99,98%, border of durability at a clench 13÷14 MPa provided by the micronized crystallization of basic crystalline phases – zinc petalite and diopside and instrumental in multiple-use of porous materials in quality universal filters in different branches of industry with possibility of lead through of thermal and chemical regeneration.