A magical brick, which can “eat” slag and can absorb carbon


Original title: A magical brick, which can “eat” slag and can absorb carbon (topic)

The first cement kiln exhaust -absorbing carbon -absorbing brick production line is put into production (theme)

Hubei Daily News A brick can “eat” waste residue and absorb carbon dioxide. This magical brick has taken the production line. Recently, it was informed that the industry’s first “CO2 Carbon Make -making Making Automation Line” in the industry was put into operation in Hubei, and was jointly developed by Huaxin Cement Co., Ltd. and Hunan University.

At present, the construction industry has generally used the traditional firing clay solid tiles with a burning and steaming concrete gray sand brick. However, the gray sand brick is made of river sand and other raw materials. The process of brick making still consumes a lot of energy and resources.

Since 2018, Li Yeqing, the president and director of the technology center of Huaxin Cement, has established a production line for the use of cement base materials and mining waste soil slag to spare steam bricks to achieve comprehensive resource use. After long -term research on Professor Hunan University, Hunan University proposed “moisture regulation -gas migration -carbonization reaction” collaborative theory, breaking the scientific bottleneck of carbon dioxide cannot quickly enter the interior of concrete products for migration and reaction.

According to reports, the temperature discharged by the cement kiln produced by the cement is still about 70 ° C after treatment, and the carbon dioxide concentration is 20%-30%. After using new technologies, the concrete brick does not need to be steaming with high temperature and high pressure during the production process. The rapid response of the raw material of brick raw materials and tail gas is “carbon absorption” carbonization, and then transformed into a finished brick.

Since the beginning of this year, the two sides have jointly designed and prepared the relevant Chinese test production lines, and have obtained the technological parameters and technical parameters of stable production. The operation results of the automated production line at the Huaxinwu Point Industrial Park Base show that the average pressure resistance of the “carbon absorption” brick reaches more than 15 MPa, which meets the requirements of the relevant national building materials standards. The cost of brick -making and brick making time is equivalent to similar products in the market. And with time, deepening the carbonization reaction, the strength of the bricks will continue to rise.

Energy -saving and emission reduction of the cement industry is the focus of my country’s “double carbon” goal. The relevant person in charge of Huaxin Cement said that with an annual output of 100 million concrete brick production lines, 26,000 tons of carbon dioxide can be absorbed and utilized each year. In addition, if the corresponding residual heat steam saved in the high -temperature steaming link is used for power generation, the annual power generation can reach 3.79 million kilowatt -hours. The promotion and application of this achievement may become an important promotion force for energy conservation and emission reduction of the building materials industry. (Reporter Wednesday spring, correspondent Feng Hua)