Spodumene Uses Ceramics Glaze

4 44 shows the sem photomicrographs of glass ceramic glaze consisting of a spodumene b cordierite c nepheline and d leucite.

Spodumene uses ceramics glaze. Spodumene glaze with natural iron stone concretion speckle. Glass ceramics containing the crystal phase β spodumene solid solution li 2 o al 2 o 3 nsio 2 are particularly useful for cookware and counter top cooking surfaces because of their low thermal expansion as shown in table 2 commercial compositions utilize tio 2 as a nucleating agent and have partial substitution of mgo and zno for li 2 o to improve the working properties of the parent. Spodumene is used in glasses glass ceramics porcelain enamels whitewares and glazes due to the powerful fluxing properties of lithia. It possesses a very low thermal expansion and reduces the viscosity of the glass mass.

Jan 15 2015 ceramic glaze recipes that use spodumene as a flux. The silica to alumina ratios are in a range where both glazes will be glossy and any fired difference will not be visible. L3362a speckle test cone 10r g2240 spodumene using ground iron stone concretions 50 70 100 mesh 35 50 70 mesh 15 40 50 mesh at 0 5 0 3 0 1 left to right. It is used in ceramics as a source of lithia.

The crystallization microstructure of the surface of these glass ceramic glazes is dissimilar depending on the crystalline phase and precursor glass composition see table 4 8. Lithia is a very powerful flux especially when used in conjunction with potash and soda feldspars. It looks the best on dark bodies. It contributes to brilliancy and strength of the glass.

As one of only a few natural lithium source materials spodumene is a valuable component in glass and ceramic enamel glazes li2o reduces thermal expansion melting temperature and viscosity of the. See more ideas about ceramic glaze recipes glaze glaze recipe. A direct substitution of spodumene for the potash feldspar in the recipe 40 spodumene produces a calculated sio 2 al 2 o 3 ratio of 7 06 and a cte of 5 53.