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Method for testing grinding performance of titanium dioxide kiln falling products

A technology for grinding performance and testing methods, applied in measuring devices, material inspection products, instruments, etc., can solve problems such as inability to characterize and limit, and achieve the effect of high precision and wide testing range

Inactive Publication Date: 2020-05-19
SICHUAN LOMON TITANIUM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of the existing sieving technology, when the particle size of the grinding material is less than 10 μm, it cannot be effectively characterized by this method
In order to overcome the defect that the grinding particle size is less than 10 μm and cannot be characterized, it is necessary to establish a test method for the grinding performance of titanium dioxide kiln products with wider adaptability as the basis for the selection of grinding process

Method used

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  • Method for testing grinding performance of titanium dioxide kiln falling products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh the No. 1 titanium dioxide off-kiln product, add 2 times the volume of deionized water, stir and let it stand for 30 minutes, then drain it, repeat this cycle 3 times, and dry the drained titanium dioxide off-kiln product at 120°C for 60 minutes; Weigh 10g of drying material and grind it on a grinder for 30min; use a 150mL glass bottle to weigh the grinding material and resin solution (25wt% alkyd resin xylene solution) according to the mass ratio of 1.5:1, add 30g of glass beads, Grind and disperse for 40 minutes to prepare a slurry, scrape the prepared slurry into a paint film with a thickness of 100 μm, dry it at 40°C for 60 minutes, and then test the 20-degree gloss value of the paint film;

[0025] Use the same method as above to test the reference titanium dioxide product, and obtain the 20-degree gloss value of the paint film.

Embodiment 2

[0027] The same method as in Example 1 was used to test the No. 2 titanium white off-kiln product to obtain the 20-degree gloss value of the paint film; the reference titanium white off-kiln product in Example 1 was used as a reference sample.

Embodiment 3

[0029] The same method as in Example 1 was used to test the No. 3 titanium white off-kiln product to obtain the 20-degree gloss value of the paint film; the reference titanium white off-kiln product in Example 1 was used as a reference sample.

[0030] The 20-degree gloss value and grinding performance of the paint film obtained in each embodiment are shown in Table 1. At the same time, the abrasive particle size of each titanium dioxide kiln product was characterized, and the particle size range is shown in Table 1.

[0031] Table 1

[0032]

[0033] It can be seen from the data in Table 1 that the test method of this application can judge the grinding performance of titanium dioxide kiln products through the gloss value, and can characterize the abrasive material below 10 μm, with high precision and wide testing range, which can fully meet the requirements of different titanium dioxide Production testing requirements.

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Abstract

The invention belongs to the technical field of titanium dioxide production and detection, and discloses a method for testing the grinding performance of a titanium dioxide kiln falling product, whichcomprises the following steps: 1) cleaning and drying a to-be-tested titanium dioxide kiln falling product to obtain a dried material; 2) grinding the dried material for 5-40 minutes to obtain a ground material; 3) mixing the grinding material and the resin solution according to a mass ratio of 0.5: 1-2: 1, adding the glass beads, and grinding and dispersing to prepare slurry; 4) blade-coating the slurry into a paint film with a thickness of 10-200 [mu] m, drying, and testing the 20-degree gloss value of the paint film; 5) testing the reference titanium dioxide kiln falling product by adopting the same method; and (6) when the 20-degree gloss value obtained in the step (4) is larger than or equal to the 20-degree gloss value obtained in the step (5), the grinding performance of the to-be-tested titanium dioxide kiln falling product is better, and when the 20-degree gloss value obtained in the step (4) is smaller than the 20-degree gloss value obtained in the step (5), the grinding performance of the to-be-tested titanium dioxide kiln falling product is poorer.

Description

technical field [0001] The invention belongs to the technical field of titanium dioxide production and detection, and in particular relates to a method for testing the grinding performance of titanium dioxide kiln products. Background technique [0002] Titanium dioxide is the most widely used white pigment. It has excellent optical properties and pigment performance. Regardless of the sulfuric acid method or the chlorination method, the process is very complicated. , particle size distribution, and dispersion are all very strict. The production control of sulfuric acid titanium dioxide pigment particles includes: firstly produce metatitanic acid primary particles by hydrolysis, and then calcinate the metatitanic acid after salt treatment. It is the basic pigment particles with a particle size of 0.15-0.35 μm. However, the crystal transformation and growth process will produce certain particle aggregation. The calcined kiln products are aggregates and sintered products of ...

Claims

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Application Information

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IPC IPC(8): G01N33/32
CPCG01N33/32G01N33/0096G01N33/0091
Inventor 熊怀忠杜国华何俊王兴祥吴彭森和奔流池永明
Owner SICHUAN LOMON TITANIUM IND CO LTD
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