New nanoscale microcrystalline glass composite pipe
From the Inner Mongolia autonomous region of v-ti, Inner Mongolia university of science and technology use of baiyun obo tailings, steel slag, iron slag and fly ash and other solid waste developed and produced 500 tons at the same time have glass ceramic and metal properties of nanoscale microcrystalline glass composite tube. This new material is not reported at home and abroad, the relevant departments of the state will this material as a national standard in 12 month in public.
Baiyun obo ore is a rare earth to the characteristics of polymetallic intergrowth iron ore, steel produced each year 7 million tons of tailings, and at the same time, each year more than 400 discharge ten thousand tons of steel slag, iron slag, which contains a certain amount of rare earth, niobium, iron and other metal elements. Inner Mongolia university of science and technology LiBaoWei professor from 2004 began to lead a group of Inner Mongolia baiyun obo ore polymetallic resources comprehensive utilization laboratory, the baiyun obo tailings, fly ash and other solid waste preparation high performance microcrystalline glass. The study found that baiyun obo tailings, steel slag, iron slag residual iron, niobium, rare earth, fluorite can be used as compound crystal nucleus agent, fly ash and the silicon, calcium, aluminum complementary, and meet the microcrystal glass based components.
Begin from 2009, task group through melting -- centrifugal casting for preparation of microcrystalline glass, the microcrystal glass nano grain process control research, the design formula, conducting experiment. Developed for production of microcrystalline glass pipe complete set of equipment, optimization of the formed microcrystalline glass pipe molding process, the construction of a daily production capacity of 3000 kilograms of microcrystalline glass tube pilot production line.
By the state building materials test center testing, this kind of microcrystalline glass tube bending strength reach 192000000 mpa (metal performance), acid resistance is greater than 99%, alkali resistance is greater than 97%, Morse's strength close to the diamond up to nine level, wear resistance is less than 0.04 grams per square centimeter, volume density 3.2 grams per cubic centimeter. Baotou denon concrete company trial the pipe, the pipe service life by 3, 4 times.