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Granular cellulose filter aid applied to titaniferous solution filter in production of titanium oxide

A production process and filter aid technology, applied in other chemical processes, alkali metal oxides/hydroxides, inorganic chemistry, etc., can solve problems such as affecting production efficiency, dust, and inability to settle, saving transportation and storage Cost, easy to promote and apply, easy to use effect

Inactive Publication Date: 2016-08-17
SHANGHAI TONNOR MATERIAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently used filter aids are all in the form of powder, which occupy a large area during storage, and there is a lot of dust when feeding. In addition, the powder filter aid has a small density and is light, and will float on the surface of the titanium liquid in large quantities, and cannot settle to the stirring surface. At the bottom of the tank, it takes a long time to stir to make the filter aid evenly dispersed in the titanium liquid, which affects the production efficiency

Method used

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  • Granular cellulose filter aid applied to titaniferous solution filter in production of titanium oxide
  • Granular cellulose filter aid applied to titaniferous solution filter in production of titanium oxide
  • Granular cellulose filter aid applied to titaniferous solution filter in production of titanium oxide

Examples

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Effect test

Embodiment 1

[0011] Example 1: Prepare the powdered organic fiber filter aid into a cylindrical particle filter aid with a length of 1 to 3 cm and a diameter of 0.6 cm, and use the amount of the original powdered cellulose filter aid for titanium dioxide addition, filtration and precoating Filtration, feeding and stirring time can be shortened from 30 minutes to 10 minutes, and feeding dust can be completely eliminated. The storage space for 1t of granular cellulose products can be changed from the original 1.5cm 3 storage space is reduced to 0.3 cm 3 .

Embodiment 2

[0012] Embodiment 2: the powdery organic fiber filter aid is prepared into 0.5 ~ 1cm long, wide 0.3 ~ 0.6cm bean-shaped particle filter aid, according to the amount of the original powdery cellulose filter aid for titanium dioxide addition filtration and Pre-coating and filtering, the feeding and stirring time can be shortened from the original 30 minutes to 5 minutes, and the feeding dust can be completely eliminated. The storage space for 1t of granular cellulose products can be changed from the original 1.5cm 3 The storage space is reduced to 0.4cm 3 .

Embodiment 3

[0013] Example 3: Prepare the powdered organic fiber filter aid into a cake-shaped granular filter aid with a thickness of 0.3 to 6 cm, and use the amount of the original powdered cellulose filter aid for titanium dioxide addition filtration and pre-coating filtration, and add materials and stir The time can be shortened from 30 minutes to 8 minutes, which can significantly reduce the feeding dust. The storage space for 1t of granular cellulose products can be changed from the original 1.5 cm 3 storage space is reduced to 0.5 cm 3 .

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Abstract

The invention discloses a granular cellulose filter aid used in the production process of titanium dioxide to realize the filtration of titanium liquid. The appearance of the filter aid is columnar, flake, cake, triangular, conical or other irregular Three-dimensional or planar shape, in the process of titanium dioxide production to realize the filtration of titanium liquid, the details are as follows: the filter aid can be quickly dispersed into powder after being mixed with the titanium liquid to be filtered, or with water, or with sulfuric acid liquid, and formed with liquid The suspension, which is pre-coated on the filter medium, and the filter aid pre-coating layer on the filter medium is used in the field of titanium dioxide production. The advantages of this granular filter aid compared with powdered ones are: under the same quality, the storage space can be reduced, and logistics costs such as transportation can be saved; there is no dust in the titanium liquid filtration process, which reduces the harm of dust to the health of workers and the environment. It can quickly settle into the mixing tank, reduce the time of stirring and dispersing, and improve the production efficiency of titanium liquid filtration.

Description

technical field [0001] The invention relates to a filter aid, in particular to a granular cellulose filter aid used in the production process of titanium dioxide to realize the filtration of titanium liquid. Background technique [0002] In the titanium dioxide filtration process, it is necessary to use filter aids to ensure the quality of the product. Commonly used filter aids include diatomaceous earth, activated carbon, perlite, and cellulose. The currently used filter aids are all in the form of powder, which occupy a large area during storage, and there is a lot of dust when feeding. In addition, the powder filter aid has a small density and is light, and will float on the surface of the titanium liquid in large quantities, and cannot settle to the stirring surface. At the bottom of the tank, it takes a long time to stir to make the filter aid evenly dispersed in the titanium liquid, which affects the production efficiency. Contents of the invention [0003] The purp...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/28
CPCB01J20/24B01J20/28016
Inventor 张楠
Owner SHANGHAI TONNOR MATERIAL SCI
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