Process for preparing lithium nickelate and process for preparing enamel using it as adherence promotor

A production method and technology of lithium nickelate are applied in the synthesis of ultrafine lithium nickelate powder crystals and the production of enamel products. The ultrafine lithium nickelate powder crystals are introduced into the field of enamel bottom glaze as an enamel adhesive, which can solve the problem of excessive addition. , large crystal grains, small adhesion, etc., to achieve the effect of improving yield and product quality, increasing storage space, and simple manufacturing process

Inactive Publication Date: 2005-03-02
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] According to foreign literature Journal of Crystal Growth, v 234, n 1, January, 2002, p176-183 reports, the synthesis and application of lithium nickelate are reported, but the raw materials used are mostly hydroxides of lithium and nickel, with high cost and low crystallinity. Large grain size, small adhesion effect
[0003] Adhesives such as nickel oxide and cobalt oxide in the traditional enamel process are introduced into the enamel bottom glaze by me

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Common chemical raw material nickel nitrate (Ni(NO 3 ) 2 .6H 2 O) and lithium carbonate (Li 2 CO 3 ), press Li 2 CO 3 : Ni(NO 3 ) 2 .6H 2 The ratio of O=4:96 was mixed evenly.

[0029] Insulate at 100°C for 1 hour, at 200°C for 2.5 hours, at 500°C for 3.5 hours, and then naturally cool to room temperature to obtain ultrafine lithium nickelate crystals with an average particle size of less than 1um.

[0030] Using the enamel bottom glaze as shown in Table 1, first mix the enamel bottom glaze according to the composition ratio and put it into the crucible, melt it at 1100°C, then quench it in water, take it out and dry it

[0031] Formulation of table 1 enamel bottom glaze

[0032] Chemical composition SiO 2 Al 2 o 3 B 2 o 3 K 2 O Na 2 CaF 2 Na 2 SiF 6

[0033] Weight percent 48.0 6.5 16.0 5.0 15.5 6.6 2.4

[0034] The ultra-fine lithium nickelate crystals are used as an adhesive for enamel, introduced into the ena...

Embodiment 2

[0042] Common chemical raw material nickel nitrate (Ni(NO 3 ) 2 .6H 2 O) and lithium carbonate (Li 2 CO 3 ), press Li 2 CO 3 : Ni(NO 3 ) 2 .6H 2 The ratio of O=8:92 was mixed evenly.

[0043] Insulate at 150°C for 0.5 hours, at 300°C for 2 hours, at 560°C for 2.5 hours, and then naturally cool to room temperature to obtain ultrafine lithium nickelate crystals with an average particle size of less than 1um.

[0044]Using the enamel bottom glaze as shown in Table 1, first mix the enamel bottom glaze according to the composition ratio and put it into the crucible, melt it at 1500°C, then quench it in water, take it out and dry it

[0045] Formulation of table 1 enamel bottom glaze

[0046] Chemical composition SiO 2 Al 2 o 3 B 2 o 3 K 2 O Na 2 CaF 2 Na 2 SiF 6

[0047] Weight percent 50.0 4.5 18.0 5.0 14.0 5.1 3.4

[0048] The ultra-fine lithium nickelate crystals are used as an adhesive for enamel, and are introduced into the ...

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PUM

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Abstract

The present invention prepares superfine lithium nickelate crystal with Li2CO3 and Ni(NO3)2.6H2O in the ratio of 1 to 10-40 and through mixing and treatment in controlled temperature and time. The enamel preparing process with lithium nickelate as the adherence promoter includes introducing lithium nickelate into enamel material during milling, smelting at controlled temperature, ball milling, grinding and baking. Using lithium nickelate as the adherence promoter can overcome the demerit of scalelike enamel crack and raise the performance of enamel product greatly.

Description

technical field [0001] The invention relates to a method for preparing an enamel adhesive and a method for making enamel, in particular to a method for synthesizing an ultrafine lithium nickelate powder crystal and introducing the ultrafine lithium nickelate powder crystal as an enamel adhesive It is a method of making enamel products that greatly improves the adhesion strength to the enamel bottom glaze. Background technique [0002] According to foreign literature Journal of Crystal Growth, v 234, n 1, January, 2002, p176-183 reports, the synthesis and application of lithium nickelate are reported, but the raw materials used are mostly hydroxides of lithium and nickel, with high cost and low crystallinity. Large grain size, small adhesion effect. [0003] Adhesives such as nickel oxide and cobalt oxide in the traditional enamel process are introduced into the enamel bottom glaze by melting. Because the general adhesives have large particle size and low activity, they have...

Claims

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Application Information

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IPC IPC(8): C01D15/00C01G53/00C03C8/02C23D5/04
Inventor 蒋伟忠顾利霞王瑛王允夫王刚王红玲陈小英
Owner DONGHUA UNIV
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