Method for obtaining ceramic building materials containing fly ash

摘要

Method of obtaining ceramic building materials containing volatile ash from the combustion of coal in conventional boilers, consists of the preparation of a raw material package containing fermented ingredients in the quantity of 10-90% by weight and additives in the quantity of 10-40% by weight of melters and/or thinners, or quartz and/or quartz-scale materials, and then grinding and/or mixing, moulding, drying and firing. The method is characterised by the separation of at least two grain fractions from the volatile ash by pneumatic or pneumatic mechanical means: small,of grain size below 100m and of 2-11% weight and thickness burns,the size of the grains up to 1000 m and the loss of roasting below 1%weight, followed by a small fraction in 5-25% weight, in place of the melters and/or quartz and/or quartz-scale materials, and a thicker fraction in 5-100% weight, for the raw material set for products with pump porosity 8-20% instead of shrinking agents. On the other hand, for products with crankcase porosity greater than 20% a small fraction in 5-100% weight shall be added instead of furnaces and/or quartz and/or quartz-scale materials and a thick fraction in 5 100%,instead of shrinking agents.