Topower fire clay refractory brick For sale,Customer In Vietnam ordered 24 tons
Topower refractory fireclay bricks is widely used in the lining of coke oven, glass kiln, cement rotary kiln, lime kiln, all kinds of incinerator, heating furnace, etc.
FIRE CLAY BRICK SK-34 500*500*60 have been finished and passed inspection.
Clay refractory brick is a refractory material made of high-quality clay as the main raw material and fired at high temperature. It has good refractory properties, mechanical strength and chemical stability, and is widely used in various high-temperature industrial fields. The production process of refractory clay bricks mainly includes several links such as raw material preparation, molding, drying, firing and cooling.
1. Raw material preparation
The main raw material of refractory clay bricks is refractory clay, which has good refractory properties and plasticity. First, the refractory clay needs to be collected and screened to remove impurities. Then, it is crushed, ground and mixed to achieve the required particle size and chemical composition. At this stage, some auxiliary materials such as bauxite or other refractory raw materials can be added according to specific needs to improve the performance of the brick.
2. Molding
Molding is a key step in the production of refractory clay bricks. Different molding methods can be selected according to the production scale and brick specifications. Common methods are press molding and extrusion molding.
Press molding: Put the mixed raw materials into a mold and press them into shape by pressure. This method is suitable for the production of small batches and high-strength refractory bricks.
Extrusion molding: The raw material mixture is placed in the extruder and extruded into shape by the rotation of the screw. This method is suitable for the production of large quantities of refractory bricks and can ensure the uniformity of the bricks.
The bricks after molding need to maintain a certain humidity to avoid cracking during subsequent processing.
3. Drying
The bricks after molding usually contain high moisture, so they need to be dried. Drying can be done by natural drying or mechanical drying. Mechanical drying usually uses a drying kiln, where the bricks are placed in a drying chamber and the moisture is removed by hot air circulation. The drying process requires control of temperature and humidity to prevent cracks in the bricks due to rapid evaporation of moisture.
4. Firing
The dried bricks need to be fired to enhance their strength and refractory properties. The firing process is carried out in a high-temperature kiln, and the temperature is generally between 1300℃ and 1500℃. During the firing process, the chemical composition inside the bricks changes to form a dense structure.
The firing method is usually divided into continuous firing and intermittent firing. Continuous kilns are suitable for large-scale production and can improve production efficiency, while intermittent kilns are suitable for small-batch and special-specification production.
5. Cooling
After firing, clay refractory brick need to be cooled. The cooling process can be natural cooling or forced cooling. Forced cooling can shorten the cooling time and reduce the deformation and cracking of the brick body. During the cooling process, attention should be paid to controlling the cooling rate to avoid thermal stress caused by a sudden drop in temperature.
6. Inspection and packaging
After cooling, the refractory bricks need to be inspected for quality, mainly including appearance inspection, dimensional measurement and performance testing. Qualified bricks will be packaged and prepared for shipment. For unqualified bricks, they need to be sorted or recycled for reprocessing.
7. Storage and transportation
Finally, qualified refractory clay bricks need to be stored in a suitable environment to maintain their performance. During transportation, care should be taken to prevent collision and damage to the brick body to ensure product quality.
