Rock wool is a continuous fiber based on natural basalt or diabase, which is melted at high temperature of 1450~ 1500℃ and drawn by platinum-rhodium alloy bushing at high speed. Its strength is equivalent to that of high-strength S glass fiber. Basalt fiber is a new type of inorganic environmental protection green high-performance fiber material, which not only has high strength, but also has many excellent properties such as electrical insulation, corrosion resistance and high temperature resistance.

Rock wool is an inorganic material with good heat insulation, sound absorption, heat insulation, fire prevention and ventilation. Rock wool, as a building thermal insulation material, has so many properties, and its extremely low thermal conductivity determines that rock wool products have excellent thermal insulation properties.

Rock wool products are internationally recognized as the main energy-saving materials in the "fifth conventional energy source" because of their excellent fire-proof and heat-insulation characteristics. Every 1 ton of rock wool products used for building insulation can save at least the energy equivalent to 1 ton of oil every year, which conforms to the trend of low carbon, energy saving and emission reduction. Therefore, rock wool, as an ideal building insulation material, is facing unprecedented development opportunities and challenges.

According to the test of foreign institutions, every time 1t mineral wool products are used in building insulation, the energy equivalent to 1t petroleum can be saved at least once a year. Rock wool has been widely used in architecture in Europe for nearly 60 years, but it has just started in China. 20 1 1. 15 after the catastrophic fire in JIAOZHOU road, Shanghai, the excellent fire prevention characteristics of rock wool were paid attention to and gradually entered the building insulation market under the guidance of relevant policies.

In addition, there are a large number of existing buildings in China that are not energy efficient. According to statistics, it is about 40 billion ㎡ (including cities about14 billion ㎡). This part of the existing buildings will inevitably need energy-saving renovation. Because there will be a large number of residents in the renovated house, the safety of thermal insulation materials should be considered. Rock wool products will soon become the first material with excellent thermal insulation performance and the highest fire rating, with huge market capacity in the future.

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Development status of rock wool

China's rock wool manufacturing industry started late, and people's understanding of rock wool is not high. It was not until 20 10, 1 1.05 that the excellent fireproof and thermal insulation performance of rock wool was recognized by the society and vigorously promoted. At the same time, the Ministry of Public Security issued the word [

According to the notice, the fire protection grade of external thermal insulation materials must reach Grade A, and the demand for rock wool with the fire protection grade of A 1 is in short supply in the market. Many large-scale projects in China have delayed the construction period because they have not purchased the corresponding rock wool, which has also pushed up the price of rock wool in the market. At that time, huge profits and vast market attracted a large number of investors.

Since 20 1 1, more than 40 production lines have been put into production in China. However, in recent years, due to the decline of the domestic economic situation, the decline of the real estate industry, and the insufficient production capacity of rock wool, the market for refractory B materials has been forced to open up, and the market competition has been continuously improved, showing the following characteristics.

1, the entry threshold of rock wool manufacturing industry has increased.

In order to speed up the structural adjustment, transformation and upgrading of rock wool industry, curb low-level redundant construction and blind expansion of production capacity, protect the ecological environment, promote energy conservation and emission reduction, and improve the utilization level of resources and energy, according to relevant laws, regulations and industrial policies, the Ministry of Industry and Information Technology formulated the Qualification Conditions for Rock Wool Industry on 20 12, which greatly improved the entry threshold.

At the same time, due to the high energy consumption of rock wool manufacturing industry compared with general manufacturing industry, developed provinces and cities such as Jiangsu, Zhejiang and Shanghai have not approved such projects in principle, which has provided favorable guarantee for the development of rock wool manufacturing industry.

2. Some nonstandard rock wool production enterprises were ordered to shut down by relevant departments.

During the period of 20 10 ~ 20 12, some investors made money illegally and quickly under the urgent market demand for rock wool, but the hastily launched projects were gradually being cleaned up. Three production lines in Shanghai were launched because they failed to pass the environmental protection examination and approval, and were ordered by the environmental protection department to stop production on 20 15.

Especially in Hebei, the hardest hit area, nearly 100 small workshop enterprises were shut down on 20 13, which provided favorable conditions for the healthy development of the market.

3. The advantages and disadvantages of rock wool manufacturing enterprises began to polarize.

Building external wall thermal insulation is related to people's life safety. In order to strengthen the quality management of building rock wool, GB/T 25975-201was promulgated and implemented, which prevented the products produced by earlier mineral wool production enterprises from getting on the wall, and also prevented the bad products of many small rock wool production enterprises from entering the field of building rock wool.

The demand for high-end rock wool products for construction has maintained a good development, which also provides a guarantee for the development of high-quality rock wool production enterprises.

Baidu encyclopedia-rock wool

Ministry of Industry and Information Technology of the People's Republic of China-Qualification Conditions for Rock Wool Industry