Residue variable quality cement China invention "Ningshi" technology
Chinese scientists have invented a copy into the new building cementitious material --&ldquo rock; concrete ”. This will be the metallurgical slag, fly ash, coal gangue and other various industrial waste ground after &ldquo ” coagulation; a stone “ ”, compared with ordinary cement, the strength, density, corrosion resistance, and the production cost and clean production and many other aspects of performance is very outstanding. “ sialite ” technology is the national high technology research and development program (863 Program) the results of a study. By Tsinghua University professor Sun Henghu invention which has a completely independent intellectual property rights of the high and new technology, has received a number of national patents. This technology has passed the 12, project appraisal organized by the Ministry of education, the next step will be submitted to the competent department of the State 863 plan for approval.
Geology research shows that natural ash and other substances through the sedimentary, metamorphic process at normal temperature and pressure conditions, can be transformed into the long term stability of the aluminum silicate rock. “ sialite ” technology is the basis of earth rock principle, in a variety of industrial waste (such as metallurgical slag, fly ash, coal gangue, red mud and other industrial solid waste) as the main raw material, with a small amount of diagenetic agent to produce high performance of new type building materials - silicon aluminum base cement products at room temperature under the conditions of atmospheric pressure.
The expert thinks, &ldquo ” coagulation; compared with ordinary cement, has many advantages, such as: the production process to achieve “ cold operation ”, energy saving, no carbon dioxide emissions; production process a large amount of smoke is reduced, not destroying the natural resources, do not pollute the environment; “ concrete ” concrete strength, density, resistance corrosion and freeze-thaw resistance is excellent; in a variety of waste residue as raw material, “ eat slag quantity ” can reach more than 90%, is the most effective method for treatment of waste residue; low production cost, simple process, etc..