Refractories are important to kiln lining, refractory material is an indispensable basic material for high temperature technology industry. The development of industries such as building materials industry, iron and steel industry, non-ferrous metal smelting industry, machinery industry, chemical industry and modern high-tech industries (aerospace, thermonuclear reactors) cannot be separated from the development of the refractories industry.
The quality, physicochemical properties and use technology of refractories not only directly affect the product quality of refractory downstream industries (research and development of clean steel refractories, research and development of non-aluminum refractories, etc.), production costs, output, and economic efficiency, but also sometimes cause workers personal safety problems.
In recent years, lightweight fire-resistant insulation materials have developed rapidly and are widely used in industrial furnaces. So what is a lightweight fireproof insulation material? It is mainly divided into which kind?
Lightweight fire-resistant insulation materials can insulate and belong to insulation materials. It is mainly used to reduce the loss of kiln heat, save energy, and as the name suggests, due to lightweight materials, it can reduce the weight of the kiln, the price is also moderate, reducing the cost of the furnace.
Main indicators influencing its insulation performance: small bulk density, low porosity, low thermal conductivity coefficient, working temperature and mechanical strength.
There are many kinds of lightweight fire-resistant insulation materials, which are classified, according to the use temperature, into low-temperature type (less than 900°C), such as diatomaceous earth bricks, and medium-temperature type (900-1200°C), such as lightweight clay bricks and aluminum silicate fibers. Etc.; high-temperature type (above 1200 °C) – such as light high alumina bricks, hollow alumina balls etc. According to the shape is divided into fibrous, porous and granular.
The effective protection of the heat energy of the kiln furnace by the lightweight refractory insulation material enables the kiln to save energy and improve the economic benefits. Its wide application in high-temperature kilns has led to rapid development and the development of more new fire-resistant insulation materials. The development of energy-saving and environment-friendly lightweight refractories has become the overall trend of the domestic fire-resistant insulation industry in recent years.
