Yunnan slag aerated block device industry has made gratifying achievements. "Steam-cured fly ash aerated concrete block" by Henan HongTong aerated concrete wall material according to the manufacturers issued a total revolution in the planning of new product trial key projects. Trial work under this project, the leaders of Henan HongTong correct leadership, through the work of all workers to participate in the trial, the efforts of cadres and technical personnel, has made gratifying achievements, basically complete production tasks. Aerated concrete block in the development process for decades has formed a number of technologies suitable for China, but there are some inherent technical defects or imperfections, these techniques have been plaguing many companies, but we are still insufficient, especially In and foreign advanced technology aerated concrete block equipment when comparing. Henan HongTong aerated concrete equipment manufacturers develop self-reliance and hard work of the revolutionary spirit, and establish a way to break their own for the aerated concrete development of strong determination. Extensive research in their work, be bold, repeated verification, constantly sum up, gradually increase, finally solved the initial steam-cured fly ash aerated concrete block is easy to cracking and carbonization poor stability of technical difficulties. (Liu)