Aluminum titanate powder and its preparation method

A technology of aluminum titanate powder and rutile titanium dioxide, which is applied in chemical instruments and methods, titanium compounds, inorganic chemistry, etc., can solve the problems of high manufacturing cost and impossibility of industrial production, and achieve the advantages of industrial production, uniform materials, and reduced The effect of manufacturing costs

Active Publication Date: 2016-06-15
泰晟新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the synthesis of aluminum titanate powder in China mainly includes magnesium-silicon system, magnesium-iron system, magnesium-zirconium system, etc., and various composite systems are also used to synthesize aluminum titanate, but basically it is synthesized by chemically pure materials, and the manufacturing cost is high, so it cannot be industrialized. Production

Method used

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  • Aluminum titanate powder and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) 72 kg of rutile titanium dioxide, 6 kg of magnesia, 1.5 kg of iron oxide, 4 kg of strontium carbonate, 30 kg of yttrium oxide, 15 kg of vanadium oxide, 1.5 kg of cerium oxide, 720 kg of alumina grinding balls and deionized 108 kilograms of water were in the mill, and ball milled for 16 hours to obtain a mixed homogeneous slurry, and the average particle size of the raw material particles in the slurry was 5 μm;

[0026] (2) The slurry in step (1) is granulated by spray drying; the inlet temperature is 200° C. and the outlet temperature is 80° C. during drying.

[0027] (3) Put the powder in step (2) at 1100°C to synthesize powder;

[0028] (4) Finely grind the synthetic powder in step (3) with 14 kg of cerium oxide, 144 kg of aluminum oxide, and 72 kg of rutile titanium dioxide to D50=5 μm, spray dry to obtain powder, and synthesize at 1400° C.

[0029] (5) The material in step (4) is crushed and milled, finely ground to D50=2.0 μm, spray-dried and granulated.

[...

Embodiment 2

[0032] (1) 72 kg of rutile titanium dioxide, 6 kg of magnesia, 1.8 kg of iron oxide, 5 kg of strontium carbonate, 20 kg of yttrium oxide, 20 kg of vanadium oxide, 10 kg of silicon oxide, 1.5 kg of cerium oxide, and alumina grinding balls 720 kilograms and 200 kilograms of deionized water in the mill, ball milled for 16 hours to obtain a mixed homogeneous slurry, the average particle size of the raw material particles in the slurry is 5 μm;

[0033] (2) The slurry in step (1) is granulated by spray drying; the inlet temperature is 240°C, and the outlet temperature is 80°C.

[0034] (3) Put the powder in step (2) at 1160°C to synthesize powder;

[0035] (4) Finely grind the synthetic powder in step (3) with 7.7 kg of cerium oxide, 144 kg of aluminum oxide, and 72 kg of rutile titanium dioxide to D50=5 μm, spray dry to obtain powder, and synthesize at 1400° C.

[0036] (5) The material in step (4) is crushed and milled, finely ground to D50=2.0 μm, spray-dried and granulated.

...

Embodiment 3

[0039] (1) 72 kg of rutile titanium dioxide, 5 kg of magnesium oxide, 1.5 kg of iron oxide, 6 kg of strontium carbonate, 20 kg of yttrium oxide, 15 kg of vanadium oxide, 1.5 kg of cerium oxide, 13 kg of silicon oxide, and alumina grinding medium 720 kilograms of balls and 216 kilograms of deionized water were placed in a mill, and ball milled for 16 hours to obtain a mixed and homogeneous slurry. The average particle size of the raw material particles in the slurry was 5 μm;

[0040] (2) The slurry in step (1) is granulated by spray drying; the inlet temperature is 280°C, and the outlet temperature is 80°C.

[0041] (3) Put the powder in step (2) at 1200°C to synthesize powder;

[0042] (4) Finely grind the synthetic powder in step (3) with 10 kg of cerium oxide, 144 kg of aluminum oxide, and 72 kg of rutile titanium dioxide to D50=5 μm, spray dry to obtain powder, and synthesize at 1400° C.

[0043] (5) The material in step (4) is crushed and milled, finely ground to D50=2.0...

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Abstract

The invention belongs to the field of ceramic raw material preparation, and particularly relates to an aluminum titanate powder and a preparation method thereof. The aluminum titanate powder is prepared from the following raw materials in percentage by weight: 40-50% of aluminum oxide, 40-60% of rutile titanium white, 1-10% of magnesium oxide, 0.5-5% of cerium oxide, 0.3-1.2% of ferric oxide, 1-5% of strontium carbonate and 0.2-2% of other additives. The aluminum titanate powder is a pre-synthesized titanic acid substance, and is beneficial to solid solution of multiple titanic acid substances. The spray drying is adopted and is beneficial to uniformity of the material. The element with approximate ionic radius to titanium is adopted, thereby being beneficial to replacement of the titanium ions. The commercially pure material is adopted, thereby lowering the manufacturing cost and being beneficial to industrial production.

Description

technical field [0001] The invention belongs to the field of preparation of ceramic raw materials, and in particular relates to an aluminum titanate powder and a preparation method thereof. Background technique [0002] Aluminum titanate ceramic powder is widely used in the manufacture of aluminum titanate ceramics and refractory materials, and is widely used in non-ferrous metal casting, automobile exhaust treatment and other low-expansion materials; aluminum titanate has low thermal conductivity and is widely used in thermal insulation materials. Aluminum titanate decomposes rapidly at 700-1200°C and decomposes into alumina and titanium dioxide, resulting in the loss of the excellent properties of aluminum titanate. To manufacture high-quality aluminum titanate materials, it is necessary to use excellent low-decomposition rate aluminum titanate powder as the basis. [0003] At present, the synthesis of aluminum titanate powder in China mainly includes magnesium-silicon sy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/00
Inventor 高礼文孙兆江孙百忠
Owner 泰晟新材料科技有限公司
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