Low porosity clay bricks are made of low aluminum mullite as the main raw material, formed by high pressure molding and high temperature sintering. The main mineral composition is mullite phase, the product has excellent high temperature physical properties and chemical erosion resistance. Suitable for Plugging Oven Holes,Clogging Refractory Clay Bricks,Clogging Refractory Clay Brick Huixian Xinwei Refractories Co. , http://www.xinweirefractory.com
Low porosity clay brick stability is good, the degree of erosion does not occur sudden change, than ordinary clay brick life increased by 2 to 3 times. Thermal conductivity, specific heat and solubility, respectively, than ordinary clay bricks 2 times higher than 10% and 40%, heat storage capacity than ordinary clay bricks 50% to 60% higher than the thermal efficiency of the kiln can be improved.
Low porosity clay bricks are characterized by:
1. Low porosity, 13 to 15%;
2. Load softening temperature is high for about 1472 ℃;
3. High compressive strength at room temperature, generally about 100MPa;
4. Good volume stability at high temperature and good abrasion resistance;
5. good resistance to infiltration and erosion.
Low porosity clay brick as a good clay refractory brick products, so often used in chemical erosion, temperature fluctuations in the environment, such as steel, glass, chemical industry. The effect is quite obvious in the use of glass hot room and the use of iron water tank.
Coal Chemical Industry in China is Overheated
In a recent address at the 2014 China International Coal and Chemical Industry Exhibition and Development Forum, Pan Aihua, Deputy Director of the Department of Raw Materials Industry under the Ministry of Industry and Information Technology, highlighted the maturing state of China’s modern coal chemical technology. However, he also pointed out several challenges that have emerged as the industry grows. Key issues include the high consumption of water and coal, significant carbon dioxide emissions, heavy investment requirements, and elevated risks. Additionally, he noted that the development of the modern coal chemical industry has become overly rapid, emphasizing the need for stronger policy guidance and more strategic planning to ensure sustainable growth.
Pan Aihua further stressed that industrial expansion must not interfere with the overall control of coal usage. It is essential to manage water resources effectively, implement scientific layouts, and account for the immense pressure of carbon emission reductions. Looking ahead, the industry should focus on rational planning, appropriate development, optimized resource allocation, improved efficiency, and deeper reforms to attract capital and support long-term stability.
At the same event, Li Yongwu, President of the China Petroleum and Chemical Industry Association, shared insights into the rapid growth of China's coal chemical sector. In 2013 alone, coal-to-oil projects produced 1.7 million tons, methanol output reached 29 million tons, and coal-to-gas projects generated 2.7 billion cubic meters of natural gas—placing China at the top of the global industry scale. By 2020, it is projected that coal-to-oil production will reach 30 million tons, while coal-to-gas output is expected to hit 50 billion cubic meters.
Wang Xianzheng, President of the China Coal Industry Association, revealed that the government has been increasingly supporting the coal chemical industry in recent years. According to preliminary data, by 2020, existing, approved, and planned coal chemical projects are expected to consume 750 million tons of coal annually. These projects are anticipated to generate 160 million tons of equivalent oil and gas, helping to reduce dependency on traditional fossil fuels. As a result, coal is gradually transitioning from being solely a fuel source to also serving as a raw material in chemical production, marking a significant shift in its role within the energy and industrial sectors.