Titanium Dioxide Hydrosol Washing Decanter Centrifuge LW300 SS316L Fine Chemical Solid Liquid Separation

Titanium dioxide pigment producers and specialty chemical plants wash titanium hydrosol repeatedly to remove soluble salts and impurities before calcination, and conventional drum filters struggle with the slow filtering slurry and fine particle size. HUADING LW300 titanium dioxide hydrosol washing decanter centrifuge separator replaces or supplements vacuum drum filters in the washing train, separating the washed solids from the salt bearing mother liquor in a fully enclosed centrifugal washer that needs no filter cloth. The compact machine processes the slip streams of small and medium TiO2 lines and pilot plants, providing the high washing efficiency needed to reach pigment grade purity.

In the washing duty, hydrosol is fed to the rotating bowl where the titanium dioxide solids settle rapidly under 3250 g of force. Wash water can be introduced through the machine so that the solids are displaced and rinsed as they travel along the screw conveyor toward the discharge, achieving efficient salt removal in a single pass. The clarified mother liquor overflows for salt recovery or recycling. Because the decanter operates continuously and automatically, it stabilizes the washing stage, reduces manual labor and eliminates the cloth cleaning downtime that limits filter based washing plants.

• Cloth free washing: Centrifugal separation removes the dependence on filter cloths that blind rapidly on gelatinous hydrosol, cutting consumable cost and downtime.
• Efficient salt displacement: Internal wash water addition rinses soluble salts from the solids during conveying, reaching the low conductivity required before calcination.
• Fully enclosed operation: The closed machine contains acidic vapors and hot slurry, improving workplace safety in aggressive chemical service.
• Compact pilot friendly size: The LW300 fits process development lines and smaller production plants, and scale up data transfers directly to larger HUADING decanters.
• Corrosion resistant build: SS316L wetted parts with optional higher alloy versions resist the sulfuric acid environment of the sulfate TiO2 process.
• Continuous automatic duty: PLC control of feed, wash water and differential speed delivers repeatable washing quality without constant operator attention.
• Water and acid recovery: The separated mother liquor is returned to the acid recovery circuit, improving the overall economics of the hydrosol washing step.

The LW300 washes titanium hydrosol in sulfate process pigment plants, and dewaters hydrous titanium dioxide before bleaching and calcination. The same machine separates solids in zirconium, silica and specialty oxide hydrosol processes, and dewaters reaction slurries in fine chemical and catalyst manufacturing. In pigment lines the decanter can be arranged in counter current washing trains with multiple machines in series to reach the required salt removal, or installed as a single polishing stage ahead of the rotary calciner. HUADING engineers evaluate hydrosol samples and recommend the washing configuration that delivers target purity with the lowest wash water consumption.

Machines for aggressive chemical duty are manufactured with documented material traceability and receive a full factory test including dynamic balancing and water load running. The LW300 is exported in a steel braced plywood case with sealed flanges and corrosion protection suitable for sea freight. The documentation file includes the general arrangement drawing, foundation plan, process and instrumentation diagram, electrical scheme, operation manual and material certificates. HUADING provides commissioning supervision, process advice for the washing circuit, and a twelve month warranty, with fast supply of spare parts and wear components for continuous chemical plant operation.