Effect of Microbiological Treatment on Technological Properties of Clays with Different Mineralogical Compositions (A Review)

摘要

The effect of the bacterial culture Bacillus mucilaginosus on the structural-mechanical, flow, drying, and other properties of argillaceous materials of different mineralogical compositions is investigated. Bacterial treatment of clay material increases its degree of dispersion and plasticity and decreases its linear air shrinkage and the drying sensitivity coefficient, which makes it possible to shorten the drying cycle, decrease the quantity of defectives pieces, lower the firing temperature, intensify the sintering process, and increase the strength of molded preforms and finished articles.