Clay Brick Manufacturing Process Overview

The clay brick manufacturing process involves preparation of raw material, forming with various techniques such as stiff-mud and soft-mud processes, glazing, firing in kilns, and cooling. Clay composition, including cohesive properties, and the use of molds lubricated with oil, water, or sand play key roles in shaping clay. Various images illustrate the steps involved in manufacturing clay bricks.

• Clay bricks
• Manufacturing process
• Soft-mud
• Stiff-mud
• Clay composition

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Uploaded on Sep 21, 2024 | 0 Views

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1. Soft-Mud Process (Forming) In this process, the clay contains too much water to be extruded (~ 20 - 30% water by weight) Instead of extrusion, individual molds (often wood) are utilized, and are lubricated with either oil, water or sand to prevent the clay from sticking to the mold If sand is used, grains with a maximum diameter of .5mm are sprinkled on the mold surfaces after being immersed in water If oil is used, it will be absorbed by the brick and burned during firing The soft-mud process can be carried out by hand or by machine.

2. Manufacturing Process Preparation of Raw Material (excavated & (1 ground) Forming or shaping (mixing with water to a plastic condition to obtain the desired shape) Stiff-mud, Soft-mud,Dry press processes (2 Setting and drying (3 (4 Glazing provides a thin & smooth coat on the surface. Firing or burning in kilns above 950 C Cooling rate of cooling affects brittleness, (6 color & shape.

3. Composition of Clay Clay SiO2+Al2O3+Impurities (CaO...) Clay is cohesive so can be shaped when wet. (sand is non-cohesive.) Pure Clay Kaolin Al2O3.2SiO2.2H2O

4. Manufacturing Process Clay bricks are made after a series of manufacturing processes.

5. CLAY BRICKS