Papermaking

Used for some special paper filling with iron oxide pigment is a kind of inorganic pigment, is not widely used, it is part of the iron pigments, generally only use iron oxide red, iron oxide yellow, iron oxide black iron brown four. The common characteristic of iron oxide color material is insoluble in water, and no affinity with pulp fiber, but depends on the effect of alum, fixed on the fiber, and obtain coloring, at the same time play a filling role. Iron oxide pigment has strong light resistance and good hiding property. Iron oxide pigment in high-grade decorative base paper (or Chinese pine base paper) play a filler role, but also can partly replace the expensive titanium dioxide, at the same time it plays a role in dyeing, desirable high cost and serious pollution of organic dyes.

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