In recent 20 years, the development of refractory industry has been promoted by the implementation of a series of technical policies, such as the large scale of blast furnace, the oxygenation of steelmaking, the externalization of refining furnace, the continuous casting ingot and the automation of operation. Refractory materials, especially unshaped refractories and refractory fiber development is rapid, the use of universal; refractory production technology and automation level, as well as the work of labor and material, Productivity has been improved.
    The unshaped shape refers to the unshaped refractory material including the refractory mud, the high aluminum brick includes the high alumina brick, the corundum brick and the mullite brick and so on, the alkali brick refers to the magnesia brick, the magnesia chrome brick, the dolomite brick and the square Magnesite bricks and so on. The United States and the production of about 400 million tons in Japan, but also a substantial decline in the trend; alkaline brick production accounts for the proportion of the total refractory material production is not the least change in the United States and Japan's production of refractory material production capacity of more than 10 million tons; , Generally 10-21%; the proportion of silica brick decreased slightly, the proportion of high-alumina brick slightly increased, mainly corundum brick and mullite brick production increased due to; silicon carbide brick, graphite brick, carbon brick And zirconium brick and other varieties, the rapid development of its proportion is generally 2-8%; clay brick and other refractory materials will be greatly reduced production; has been hailed as the second generation of refractory unshaped refractories, the pace of development The fastest, fifteen years, its production has risen to account for the total output of refractory 1/3 or so, some countries have reached 40% or more, and the proportion of fired refractory roughly the same.
    In addition, has been hailed as the third generation of refractory fiber refractories, from around 1970, has been high-speed development. In 1969 the world production of refractory fiber is about ten thousand tons, to 1979 has reached 45000 tons. At present, the United States production capacity of refractory fiber 2.5-3.0 million tons / year, the United Kingdom 6000-8000 tons / year, Japan is about 8,000 tons / year, the Soviet Union roughly 6000 tons / year, China is about 3,000 tons / year. At the same time, the production methods and secondary processing technology of refractory fiber have also been greatly improved, the variety is increasing, the use temperature is raised from 1000 ℃ to above 1600 ℃, and the construction technology has also made great progress.

In recent 20 years, the development of refractory industry has been promoted by the implementation of a series of technical policies, such as the large scale of blast furnace, the oxygenation of steelmaking, the externalization of refining furnace, the continuous casting ingot and the automation of operation. Refractory materials, especially unshaped refractories and refractory fiber development is rapid, the use of universal; refractory production technology and automation level, as well as the work of labor and material, Productivity has been improved.

The unshaped shape refers to the unshaped refractory material including the refractory mud, the high aluminum brick includes the high alumina brick, the corundum brick and the mullite brick and so on, the alkali brick refers to the magnesia brick, the magnesia chrome brick, the dolomite brick and the square magnesia brick and so on. The United States and the production of about 400 million tons in Japan, but also a substantial decline in the trend, alkaline brick production accounts for the proportion of the total refractory material production is not the least change in the United States and Japan's production of refractory material production capacity of more than 10 million tons; , Generally 10-21%; the proportion of silica brick decreased slightly, the proportion of high-alumina brick slightly increased, mainly corundum brick and mullite brick production increased due to; silicon carbide brick, graphite brick, carbon brick And zirconium brick and other varieties, the rapid development of its proportion is generally 2-8%; clay brick and other refractory materials will be greatly reduced production; has been hailed as the second generation of refractory unshaped refractories, the pace of development The fastest, fifteen years, its production has risen to account for the total output of refractory 1/3 or so, some countries have reached 40% or more, and the proportion of fired refractory roughly the same.

In addition, has been hailed as the third generation of refractory fiber refractories, from around 1970, has been high-speed development. In 1969 the world production of refractory fiber is about ten thousand tons, to 1979 has reached 45000 tons. At present, the United States production capacity of refractory fiber 2.5-3.0 million tons / year, the United Kingdom 6000-8000 tons / year, Japan is about 8,000 tons / year, the Soviet Union roughly 6000 tons / year, China is about 3,000 tons / year. At the same time, the production methods and secondary processing technology of refractory fiber have also been greatly improved, the variety is increasing, the use temperature is raised from 1000 ℃ to above 1600 ℃, and the construction technology has also made great progress.