| 摘要 |
A food container is produced by mixing crushing 45 wt.% granite porphyry containing 66 wt.% anhydrous silicic acid, 10 wt.% aluminium oxide, 2.8 wt.% oxidizing steel, 3.7 wt.% potassium oxide, 2.8 wt.% calcium oxide, 3,3 wt.% sodium oxide and a little amount phosphorous oxide, magnesium, titanium, radium, ete, 5 wt.% clay powder containing germanium component, adding 50 wt.% refractory clay powder of pink white-clay, sandy white-clay etc, mixing, kneading, moulding with the mixture, drying in the shade until it has below 5 wt.% water content, sintering at 800 deg.C, coating the glaze of 80 wt.% granite porphyry containing germanium, 10 wt.% silica and 10 wt.% limestone, and resintering at 1300 deg.C.
|
