Dehua snow white porcelain and its preparation method
A snow-white, porcelain technology, applied in the field of porcelain preparation, can solve the problems of lack of color and luster in Dehua white porcelain, such as fineness, compactness, loss of firing process, etc., and achieve the effect of moist color, high transparency and fine glaze surface
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[0038] The preparation process of Dehua Snow White Porcelain specifically includes the following steps:
[0039] (1) weighing ingredients according to the raw material formula of the snow-white body and the snow-white glaze, pulverizing, mixing, and wet-milling the raw materials respectively to obtain the snow-white body slurry and the snow-white glaze;
[0040] (2) The snow-white base slurry and the snow-white glaze prepared in step (1) are removed iron repeatedly through a magnetic separator, until the iron content in the snow-white base slurry and the snow-white glaze is lower than 0.05%;
[0041] (3) use the snow-white base slurry raw material that step (2) makes to make ceramic body;
[0042] (4) Put the ceramic body into a kiln, and biscuit at 500-620° C. for 4-5 hours to obtain a ceramic body;
[0043] (5) Snow white glaze is applied on the surface of ceramic biscuit;
[0044] (6) After the glaze on the ceramic green body is dried, put it into the kiln and fire it in ...
Embodiment 1
[0056] Dehua snow white porcelain, including snow white body and snow white glaze,
[0057] The snow-white green body includes the following raw materials in parts by weight: 40 parts of Dehua high territory, 40 parts of Dehua potassium feldspar, and 25 parts of Dehua quartz.
[0058] And the chemical composition of the white body is as follows: K 2 O: 3.2%, Na 2 O: 1%, Al 2 o 3 : 20.5%, Fe 2 o 3 : 0.02%, SiO 2 : 68.48%, ZrO 2 : 0.92%, ZnO: 1.62%, I.L: 4.26%.
[0059] The snow-white glaze includes the following raw materials in parts by weight: 2 parts of Dehua high territory, 15 parts of Dehua limestone, 39 parts of Dehua potassium feldspar, 46 parts of Dehua quartz, 5 parts of white corundum, and 3 parts of clam powder.
[0060] And the chemical composition of snow white glaze is as follows: K 2 O: 4.25%, Na 2 O: 1.65%, CaO: 6.4%, Al 2 o 3 : 10%, Fe 2 o 3 : 0.04%, SiO 2 : 70.58%, I.L: 7.08%.
[0061] The preparation process of Dehua Snow White Porcelain speci...
Embodiment 2
[0080] Dehua snow white porcelain, including snow white body and snow white glaze,
[0081] The snow-white green body includes the following raw materials in parts by weight: 50 parts of Dehua high territory, 30 parts of Dehua potassium feldspar, and 15 parts of Dehua quartz.
[0082] And the chemical composition of the white body is as follows: K 2 O: 3.9%, Na 2 O: 1.2%, Al 2 o 3 : 26.2%, Fe 2 o 3 : 0.04%, SiO 2 : 60.76%, ZrO 2 : 0.74%, ZnO: 1.96%, I.L: 5.2%.
[0083] The snow-white glaze includes the following raw materials in parts by weight: 4 parts of Dehua high territory, 10 parts of Dehua limestone, 48 parts of Dehua potassium feldspar, 36 parts of Dehua quartz, 8 parts of white corundum, and 1 part of clam powder.
[0084] And the chemical composition of snow white glaze is as follows: K 2 O: 5.5%, Na 2 O: 1.35%, CaO: 7.8%, Al 2 o 3 : 12.3%, Fe 2 o 3 : 0.02%, SiO 2 : 64.38%, I.L: 8.65%.
[0085] The preparation process of Dehua Snow White Porcelain spec...
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