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Inner Mongolia University of Science and Technology disclosed: The use of Baiyun Ebo tailings, steel slag, iron slag and fly ash and other solid waste to develop and produce 500 tons of glass-ceramic and metal properties of nano-scale glass-ceramic composite pipe. This new type of material has not been reported at home and abroad, and the relevant state departments have publicized this material as a national standard on December 10. Tested by the National Building Materials Testing Center, the microcrystalline glass tube has a flexural strength of 192 MPa (metal properties), acid resistance greater than 99%, alkali resistance greater than 97%, Mohs strength close to diamond grade 9, wear resistance Less than 0.04 grams per square centimeter, and a bulk density of 3.2 grams per cubic centimeter. Baotou Tianlong Concrete Company tried the pipe and its service life was increased by 3-4 times. Baiyun Obo Mine is a multi-metal symbiotic iron ore characterized by rare earths. Baotou Steel produces 7 million tons of tailings per year, and discharges more than 4 million tons of steel slag and iron slag each year, which contains a certain amount of rare earth, antimony, iron and other metal elements. . Li Baowei, a professor at Inner Mongolia University of Science and Technology, began to lead a research group to establish a multi-metal resources comprehensive utilization laboratory in Inner Mongolia Baiyun Obo Mine in 2004 to study high-performance glass-ceramics from solid waste such as Baiyun Obo tailings and fly ash. It has been found that the iron, bismuth, rare earth and fluorite residues of Baiyun Obo tailings, steel slag and iron slag can be used as composite nucleating agent, complementing silicon, calcium and aluminum in fly ash to meet the basic composition requirements of glass-ceramics. . Since 2009, the research group has used the fusion-centrifugal casting method to prepare glass-ceramics, studied the process control of microcrystalline glass nano-grains, designed the formula, carried out experiments, and explored the preparation of elements such as iron, bismuth and rare earth in glass-ceramics. The comprehensive mechanism of the process, detailed study of the annealing, crystallization heat treatment system and glass softening, crystallization system and other system comprehensive process parameters, established the relationship between various process parameters and glass-ceramic deformation defects. With the support of the three levels of science and technology management departments of the state, autonomous region and Baotou City, the company has developed a complete set of equipment suitable for the production of glass-ceramic tubes, optimized the formation of glass-ceramics, and built a glass-ceramic glass with a daily production capacity of 3,000 kg. Pipe pilot production line.