Device for continuous separation of coarse particles before titanium dioxide coating process

Abstract

The invention relates to the field of production equipment of titanium dioxide, in particular to a device used for continuously separating coarse grains before the coating process of the titanium dioxide. The device used for continuously separating the coarse grains before the coating process of the titanium dioxide can obviously improve the quality of the coating slurry particles to obtain primary high-cleanliness and high-dispersity titanium dioxide products. The device comprises a sedimentation tower body and a feed pipe. The sedimentation tower body is composed of an upper cylindrical body structure and a lower inverted-cone structure. The outlet of the feed pipe is arranged at the connection part of the cylindrical body structure and the inverted-cone structure of the sedimentation tower body. The central axis of the feed pipe is tangent to the inner wall of the cylindrical body structure of the sedimentation tower body. A discharge pipe is arranged on the top of the cylindrical body structure and communicated with a coating process pipeline and a return pipe, and the return pipe is communicated with the feed pipe. The device breaks through the technical bottleneck of traditional equipment, effectively improves the product quality and is especially suitable for the production process of high-quality coating slurry.

Description

technical field [0001] The invention relates to the field of titanium dioxide production equipment, in particular to a device for continuously separating coarse particles before the titanium dioxide coating process. Background technique [0002] The existing titanium dioxide production enterprises generally adopt the method that after sanding by a sand mill, the material directly passes through a sieve with a certain mesh number, and then vibrates, and the slurry that passes through the sieve is directly prepared to the target concentration and then coated. However, due to the limited production target, the mesh size of the screen generally can only reach 500 mesh, and due to the instability of production, the screen often needs to be cleaned or even damaged and replaced during the production process, resulting in the slurry still containing There are more coarse particles, which leads to the inhomogeneity of the coated slurry particles and reduces the dispersibility of the ...

AI Technical Summary

Problems solved by technology

However, due to the limited production target, the mesh size of the screen generally can only reach 500 mesh, and due to the instability of production, the screen often needs to be cleaned or even damaged and replaced during the production process, resulting in the slurry still containing There are more coarse particles, which leads to the inhomogeneity of the coated slurry particles and reduces the dispersibility of the slurry, thereby reducing the process indicators such as dispersibility, brightness, decolorization power and cleanliness of the final product, which cannot reach To the quality requirements of high-end products

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