Honeycomb filter and ceramic filter assembly

An integral ceramic filter assembly produced by adhering with a ceramic seal layer outer surfaces of a plurality of elongated honeycomb filters, each of which is formed from a sintered α-type silicon carbide, wherein a ratio L/S between a filter length L in a flow direction of a processed fluid and a filter cross-section S in a direction perpendicular to the flow direction is 0.06 to 0.75 mm/mm2.

An elongated honeycomb filter formed from a sintered α-type silicon carbide, the honeycomb filter having a ratio L/S between a filter length L in a flow direction of a processed fluid and a filter cross-section S in a direction perpendicular to the flow direction is 0.06 to 0.75 mm/mm2.

A honeycomb filter formed from a sintered α-type silicon carbide, wherein the average pore diameter of the honeycomb filter is 5 to 15 μm, the average porosity is 30 to 50%, and the honeycomb filter has 20% or more of through pores.

A honeycomb filter formed from a sintered α-type silicon carbide having a plurality of cells where each cell is defined by a cell wall, wherein the specific surface area of grains forming the cell wall is 0.1 m2/g or more.

An integral ceramic filter assembly produced by adhering with a ceramic seal layer outer surfaces of a plurality of filters, each of which is formed from a sintered porous ceramic body, wherein the filters are offset from each other in a direction perpendicular to a filter axial direction, and the seal layer has a thickness of 0.3 mm to 3 mm and a thermal conductance of 0.1 W/mK to 10 W/mK.