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Lithium ceramic

A lithium and spodumene technology, applied in the field of ceramics, can solve the problems of cracking, serious, cracking damage, etc., and achieve the effect of improving thermal stability and improving internal performance

Active Publication Date: 2012-08-01
PINGDING YINGYU PORCELAIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When ceramic products are used for soup and stew, the temperature change is far greater than the range that ceramic products can withstand, and the ceramics are often damaged due to the poor stability of the ceramic itself, especially when there is an open flame in contact with the ceramic, the cracking phenomenon is more serious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment １

[0011] The weight percentage components of the billet are: spodumene 42%, Datong soil 25%, panxilongyan soil 10%, Shanyin soil 10%, Jingxing soil 2%, quartz 2%, Yusi soil 2%, talc 7% .

[0012] The billet is crushed by the jaw crusher, processed into 80-mesh fine powder by the wet water mill, and then sent to the wet ball mill, material: ball: water = 1:2.5:1, ground for 18 hours, passed through a 250-mesh sieve, and the sieve residue is 0 .6%. After the ground blank is filtered and dried by a mud filter, it is stirred twice by a vacuum mud refining machine, and the vacuum degree is ≥0.09MPa. The green body is rolled and formed. The firing temperature is 1250°C.

Embodiment ２

[0014] The weight percentage components of the blank are: spodumene 52%, Datong soil 25%, panxilongyan soil 5%, Shanyin soil 5%, Jingxing soil 8%, quartz 2%, Yusi soil 1%, talc 2% .

[0015] The billet is crushed by the jaw crusher, processed into 80-mesh fine powder by the wet water mill, and then sent to the wet ball mill, material: ball: water = 1:2.5:1, ground for 18 hours, passed through a 250-mesh sieve, and the sieve residue is 0 .6%. After the ground blank is filtered and dried by a mud filter, it is stirred twice by a vacuum mud refining machine, and the vacuum degree is ≥0.09MPa. The green body is cold-pressed. The firing temperature is 1320°C.

Embodiment ３

[0017] The weight percentage components of the billet are: 42% of spodumene, 35% of Datong soil, 5% of Taoxi Longyan soil, 5% of Shanyin soil, 2% of Jingxing soil, 8% of quartz, 1% of Yusi soil, and 2% of talc .

[0018] The billet is crushed by the jaw crusher, processed into 80-mesh fine powder by the wet water mill, and then sent to the wet ball mill, material: ball: water = 1:2.5:1, ground for 18 hours, passed through a 250-mesh sieve, and the sieve residue is 0 .6%. After the ground blank is filtered and dried by a mud filter, it is stirred twice by a vacuum mud refining machine, and the vacuum degree is ≥0.09MPa. The green body is cold-pressed. The firing temperature is 1280°C.

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Abstract

The invention relates to a lithium ceramic, in particular to a high-strength lithium ceramic. The invention aims to provide the lithium ceramic with high thermal stability, and the blank of the lithium ceramic comprises the following components in percentage by weight: 42 to 52 percent of podumene, 25 to 35 percent of Datong clay, 5 to 10 percent of elutriated Longyan clay, 5 to 10 percent of Shanyin clay, 2 to 8 percent of Jingxing clay, 2 to 8 percent of quartz, 1 to 5 percent of Yusi clay, and 2 to 7 percent of talc. A preparation method comprises the following steps of: crushing the blank, processing into fine powder with 80 meshes, grinding for 18 hours in a wet ball mill according to a ratio of materials to balls to water of 1:2.5:1, screening by using a 250-mesh screen, and making the weight of screen residue 0.6 percent; and draining the ground blank by using a mud press, stirring twice by using a vacuum pugging machine in a vacuum degree of more than or equal to 0.09MPa, and firing at the temperature of between 1,250 and 1,320 DEG C. The thermal stability of the traditional lithium ceramic is effectively improved, and the lithium ceramic is not cracked during 450-20 DEG Cheat exchange.

Description

technical field [0001] The invention relates to a ceramic, especially a high-strength lithium porcelain. Background technique [0002] The currently used lithium ceramic products have the characteristics of good light transmission, high whiteness, and light weight, but their disadvantages are poor thermal stability, which can only guarantee that the product will not burst after one heat exchange at about 200°C to 20°C, such as The Chinese invention patent with the notification number CN100360461C discloses a medium-temperature high-alumina strengthened porcelain. The green body includes Datong soil, weathered potassium feldspar, alumina, Hunan washing mud, Jiangxi lithium porcelain stone powder, Hunan black feldspar, and calcined talc , Jiepa soil, quartz, and Guizhou soil are obtained through batching, water ball milling, sieving to remove iron, pressure filtration, rough smelting, obsolete, scouring, molding, drying, glazing, kiln firing, and inspection. Its characteristic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/00
Inventor 李文玉
Owner PINGDING YINGYU PORCELAIN