Particulate filter and material for producing the same

摘要: Abstract of the Disclosure Apparatus for filtering solid particulates from sus-pension in fluid streams (especially carbon exhaust gas diesel engines) comprising a honeycomb filter with thin porous walls defining cells extending therethrough, transverse cross-sectional shapes forming repeating pattern geometric without interior corner angles less than 30° and alternate an inlet group outlet group. The is open at face closed adjacent face. Each cell each shares only other may have volume substantially uniform interconnected porosity mean pore diameter pores lying within area defined by boundary lines connecting points 1-2-3-4 FIG. 8 drawings. Further described are impervious, unglazed, sintered ceramic products primarily cordierite crystal phase, exhibiting low coefficients thermal expansion having analytical molar composition about 1.7-2.4 R0 1.9-2.4 A1203 4.5-5.2 SiO2, as well foamable particulate cement capable foamed masses, consisting essentially, weight, 1-40% grog, 99-60% base material foaming agent, such SiC, useful materials apparatus.