Manufacturing method and technology of antique blue brick

The manufacturing method and technology of antique blue bricks are as follows:

Step 1, evenly stirring fly ash, quicklime, perlite, cement, iron oxide green and water to prepare a mixture;

Step 2: put the mixture into a mold and press it into a blue brick. The pressing pressure is 1.5 ~ 1.7 MPa. The die is rectangular, and steel cylindrical rods are distributed in the groove in the center of the die. The diameter of cylindrical steel bars is 0.2 ~ 0.3 mm, the distance between adjacent cylindrical steel bars is 1 ~ 2 cm, and the upper end faces of cylindrical steel bars are separated.

Step 3, drying the green bricks at 70-80 DEG C for 5-6 hours; Then the blue bricks are cured by high-pressure steam, and the antique blue bricks are made by steam pressure 1.4 ~ 1.5 MPa, high-pressure steam curing temperature 180 ~ 190℃ and high-pressure steam curing15 ~16 h.

The antique blue brick in this scheme includes the following raw materials in parts by weight: 40-50 parts of fly ash, 7-9 parts of quicklime, 20-25 parts of perlite, 0/0-/0/2 parts of cement/kloc-,7-8 parts of iron oxide green and 20-25 parts of water.

Background art:

Antique blue brick belongs to sintered brick. The main raw material is clay. Clay is mixed with water, extruded, baked in a brick kiln to (about 1000) and cooled with water, so that the iron in clay is not completely oxidized and it has better weather resistance and water resistance. Because antique blue bricks have good frost resistance, acid and alkali resistance and other advantages, but also to inherit traditional culture.

At present, many scenic spots or streets often build some antique buildings, which makes the demand for antique blue bricks surge. However, due to the high viscosity of clay, there is a general problem of insufficient thermal insulation in buildings built with antique blue bricks produced by clay.