SMELT FILTER AND METHOD OF ITS PRODUCTION Russian patent published in 2013 - IPC B01D39/00 

FIELD: process engineering.

SUBSTANCE: set of inventions to filtration of smelt. Smelt filter comprises refractory material, binder and additive. Note here that said refractory material is bound with open cells by binder for shaping by sintering. Weight ratio of refractory material to binder makes 20-45 wt %, that of refractory material to 52-78 wt % of binder at total content of refractory, binder and additive of 100%. Used binder is selected from the group composed by carbon, asphalt, tar, synthetic asphalt, aluminium silica gel or that of silicic acid. Refractory material is selected from the group consisting of mollite, corundum or spinel. Proposed method comprises composing slip of refractory material, binder and additive with liquid carrier, applying composed slip on porous material with open pores to make at least one refractory coating. Thereafter, porous material with open pores is sintered with formed refractory coating at sintering temperature.

EFFECT: better mechanical properties at ambient temperature and filter resistance against high temperature.

6 cl, 1 tbl, 4 ex