In modern industrial production, refractories are widely used, especially in high temperature environment, they play a vital role. Diatomite insulating brick, as an efficient heat insulation refractory, has gradually become one of the indispensable materials in industrial furnaces and other fields with its unique performance and wide application fields.

I. Product Overview

Diatomite insulating brick is a kind of heat insulation refractory brick made of diatomite as the main raw material. It has the characteristics of low density, high thermal insulation and good thermal stability. Its classification temperature can reach 1610-1780℃, which can meet the high temperature requirements of most industrial furnaces. This insulating brick has low thermal conductivity, which can effectively reduce the heat transfer in high temperature environment, thus achieving the effect of energy saving. In addition, it also has many advantages, such as high strength, corrosion resistance, low thermal capacity, low shrinkage, high insulation, high fire resistance, good thermal shock resistance and so on, so that it can maintain stable performance under various complex working conditions.

II. Physical and chemical properties

Physical and chemical properties of diatomite insulating brick are very important, which directly determine the quality and application scope of the product. According to different models, its maximum service temperature is 900℃, which can adapt to a wide temperature range. Its bulk density ranges from 0.5 g/cm to 1.0 g/cm, and its compressive strength increases with the increase of density, ranging from 0.8MPa to 5.0MPa. At the same time, the change rate of reheat line at 900℃×8 hours is controlled within 0.5%, showing good dimensional stability. In terms of heat conduction, its thermal conductivity at 300℃ ranges from 0.11 W/m k to 0.23 W/m k, which can effectively prevent heat transfer. In terms of chemical composition, the content of silicon dioxide (SiO₂) is between 70.0% and 71.5%, the content of aluminum oxide (Al₂O₃) is between 16.5% and 18.0%, and the content of iron oxide (Fe₂O₃) is between 4.0% and 5.0%. The proportion of these components has an important influence on the fire resistance and heat insulation performance of bricks.

III. Application fields

Diatomite insulating brick has a wide range of applications. In industrial furnaces, it is used as furnace lining material, which can effectively protect the furnace structure, reduce heat loss and improve the thermal efficiency of furnaces. For example, in an electric furnace, as a heat insulation layer, it can reduce the energy consumption of the electric furnace and prolong the service life of the furnace body. In metallurgical furnace, it can withstand the erosion of high temperature slag and maintain the integrity of the furnace body. In addition, it is also used as the backing of various fireproof materials, such as providing additional thermal insulation protection for other fireproof materials in the field of building fireproof. In thermal equipment, such as drying furnace, heating furnace, etc., diatomite insulating brick is used as heat insulation material, which can effectively reduce the surface temperature of the equipment and improve the safety and operating environment of the equipment.

IV. Quality Control and Packaging and Transportation

Quality control is the key link to ensure the stable performance of diatomite insulating brick. Professional quality inspection team will carry out strict sampling inspection for each batch of products, including chemical analysis and physical performance test, and also check the appearance of products, such as dimensional tolerance, deformation, cracks, corner defects, melting holes and color. Only products that pass strict inspection will be allowed to leave the factory. In terms of packaging and transportation, it is packed in pallets, fixed with PET packing tape and covered with plastic film. The standard export pallet size is 1000mm×1000mm, and the load capacity of each pallet is 1.5-2.0 tons. During transportation, a 20-foot container can carry 24 tons and a 40-foot container can carry 28 tons. This way of packaging and transportation can effectively protect the integrity of products during transportation and reduce the damage caused by transportation.

V. Company Profile and Services

Zibo Zhuoyue Refractory Co., Ltd. is a professional manufacturer and exporter of refractories with more than 30 years of production experience. The company's main products include refractory bricks, refractory castable, insulating brick, thermal insulation castable, calcined kaolin, clinker, mullite, ceramic fiber products and so on. The company has 2 tunnel kilns, 4 vertical kilns, 25 brick presses, 2 automatic batching production lines for castables and 4 production lines for granules and powders, with an annual production capacity of over 100,000 tons. Products are exported to more than 30 countries, such as Korea, Japan, Germany, France, Italy, Indonesia, the United States, Australia, Malaysia, the Philippines, Israel, Jordan, Turkey, Syria, Honduras, South Africa, Taiwan, China and so on. In order to ensure customers' trust in products, the company provides all-round services, including providing photos of product production links, authoritative product inspection reports, and comprehensive after-sales services, such as product quality consultation, construction scheme, and usage methods. If the product has quality problems, the company will negotiate with customers and compensate according to the evidence.

Diatomite insulating brick occupies an important position in the field of refractories because of its excellent performance, wide application and reliable quality control. With the increasing demand for energy saving and environmental protection in industrial production, the application prospect of diatomite insulating brick will be broader.