Fábrica de refractarios de Rongsheng
El ladrillo de semisílice es un producto refractario de silicato de aluminio con alúmina. (Al2O3) contenido de 15-30%, y es un ladrillo refractario semiaácido. Los ladrillos de semisílice generalmente utilizan arcilla refractaria que contiene arena de cuarzo., pirofilita, refractory clay, or kaolin beneficiation tailings as raw materials. Los ladrillos de semisílice se encogen menos durante la cocción, porque a 1250°C, el cuarzo de la materia prima se convierte en cristobalita, y el volumen se expande, que compensa parcialmente la contracción producida durante la sinterización de la arcilla.. El proceso de fabricación de ladrillos de semisílice se puede dividir en dos tipos.: despedido o no despedido. El proceso de fabricación de los ladrillos cocidos es básicamente el mismo que el de los ladrillos de arcilla.; Los ladrillos sin cocer se fabrican principalmente con vidrio soluble como aglutinante..
Semi-silica brick details
| Product Name | Semi-silicon brick |
| AI2O3/% | 21.59 |
| SiO2/% | 76.58 |
| Fe2O3/% | 0.83 |
| Refractoriness℃ | 1630-1650 |
| Bulk Density g/cm³ | 2.1 |
| Porosidad aparente % | 18 |
| Normal temperature compressive strength / MPa | 29 |
| Load softening temperature(T6.6) / ºC | 1490 |
Characteristics of semi-silica bricks
Refractory: The refractoriness of semi-silica bricks is usually between 1580°C and 1680°C.
Resistencia a la corrosión química: It has good corrosion resistance against acidic and alkaline slags.
Thermal stability: It has good thermal stability and is suitable for environments with large temperature fluctuations.
Semi-silica brick application
Semi-silica bricks are stable in volume at high temperatures (slightly expanded), which is beneficial to improving the integrity of the masonry and reducing the erosion of the slag on the masonry; when in contact with high-temperature slag, a layer of viscous glaze-like substance is formed on the surface of the brick, blocking the pores and preventing the slag from penetrating into the brick, thereby improving the brick’s anti-erosion ability; and the load-deformation temperature is relatively high; so in some occasions, its service life is not inferior to that of ordinary clay bricks.
Semi-silica bricks are mainly used as linings for steel ladle and refractory layers for pouring steel systems. Además, they can also be used for hot furnace roofs, regenerator checker bricks, cupola linings, various kiln bottoms and flues.
Semi-silica brick factory production process
- Raw material selection: Select raw materials with high silicon and aluminum content, such as clay and quartz.
- Mixing and homogenization: Mix and homogenize the raw materials to ensure uniform distribution of the ingredients.
- Molding: Use molding methods such as pressing or extrusion to make bricks of the required shape.
- Drying: The bricks are dried in a drying room to remove moisture.
- Firing: High-temperature firing in a tunnel kiln or shuttle kiln to form hard semi-silica bricks.
- Inspection and grading: The fired semi-silica bricks are inspected for quality and graded according to size, appearance, y rendimiento.
Introducción de la empresa Rongsheng
Rongsheng Company es un proveedor profesional de materiales refractarios, con 10 años de experiencia exportadora, exportando a más de 80 países. Los principales productos de Rongsheng Company incluyen varios ladrillos refractarios, materiales refractarios sin forma, materiales metalúrgicos, materiales de aislamiento térmico y así sucesivamente.
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