Because chemical iron: mainly used for titanium dioxide,Website:http://www.sairui2009.com, chemical industry, content of 85% -95% 30 to 200 mesh adjustable.Chemical iron: mainly used for titanium dioxide, chemical industry, content of 85% -95% 30 to 200 mesh adjustable.Sewage treatment with iron: mainly used in electroplating, leather, paper, dyeing and finishing, chemical, ceramics and other industries wastewater treatment, content of 75% -90% 30 to 200 mesh adjustable.Pure iron is silver-white metal, iron is black, which is an optical problem, due to the small surface area of the iron, there is no fixed geometry, the crystal structure of a geometric shape iron, iron absorption and thus a visible department and the other departments specular reflection of visible light out, showing white; not absorb iron finished diffuse light was able to enter the human eye less visible, it is the black.
