Titanium dioxide byproduct ferrous sulfate is a by-product generated during the production of titanium dioxide powder via the sulfuric acid method, with 3~4t of ferrous sulfate by-product produced per ton of titanium dioxide powder. Due to the presence of impurities such as Mn2+, Al3+, Mg2+, Ca2+, Ti4+, and trace heavy metals, it cannot be directly utilized. However, since titanium dioxide by-product ferrous sulfate contains 85%~90% ferrous sulfate heptahydrate, it possesses relatively high resource utilization value.

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