SteelOrbis Shanghai
China has made a breakthrough in its research work on the dephosphorization of high-phosphorous hematite, achieving a reduction in phosphorous content to 0.15 percent - within the GB requirement of < 0.2 percent for phosphorous content in fine ore.
Guizhou Geology & Mineral Resources Central Laboratory has confirmed the breakthrough in its report on its research into the removal of phosphorous from high-phosphorous oohtic hematite ore from Taohua, Wushan near Chongqing. This latest success in phosphorous removal will enable the development and utilization of billions of metric tons of high-phosphorous hematite, relieving the tight supply of resources in China to a certain extent.
The dephosphorization of high-phosphorous iron ore had up to now been a long-standing unresolved technical problem in China. During the iron and steel making processes, phosphorous can seriously affect the quality of pig iron and steel, causing brittleness in particular. As a result, the mining industry requires that the content of phosphorous in hematite should be lower than 0.2 percent.