New type bone china, and producing method
A production method and technology of bone china, applied in the field of ceramics, can solve the problems of transparency effect, lack of raw materials of bone ash, reducing mechanical strength, etc., so as to improve mechanical strength and thermal stability, improve porcelain quality and delicate feeling, and reduce firing deformation. Effect
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[0015] Example 1:
[0016] Ingredients: ashes: 10%, kaolin: 30%, porcelain stone: 52%, aluminum powder: 8% (weight percentage). The above-mentioned raw materials are mixed, ball milled, sieved, dehydrated, muddyed, formed, glaze applied, and fired (firing temperature 1230℃~1280℃, oxidizing flame firing) to obtain good light transmittance, strength and thermal stability The new bone china with good performance, smooth glaze and whiteness. After testing, the chemical composition of the body is: SiO2 54.5% Al2O3 26.3% P2O5 3.5% CaO 4.8% MgO 0.3% K2O+Na2O 3.6% Ignition loss 7%, porcelain body The amount of crystal phase is 60% (weight percentage), the main crystal phase is mullite, and the secondary crystal phase is β-Ca 3 (PO 4 O) 2 , Anorthite, feldspar glass accounted for 31% (weight percentage).
Example Embodiment
[0017] Example 2:
[0018] Ingredients: ashes: 6%, kaolin: 25%, porcelain stone: 60%, aluminum powder: 9% (weight percentage). According to the process described in Example 1, the firing temperature is 1240°C to 1300°C. After testing, the chemical composition of the body is: SiO2 56.2Al2O3 28.5% P2O5 2.1% CaO 2.9% MgO 0.2% K2O+Na2O 4.2% Ignition loss 5.9%, the amount of crystal phase in the porcelain body accounts for 65% (weight percentage), the main crystal phase It is mullite, the secondary crystal phase is β-Ca 3 (PO 4 O) 2 , Anorthite and feldspar glass account for 32% (weight percentage).
Example Embodiment
[0019] Example 3:
[0020] Ingredients: ashes: 8%, kaolin: 28%, porcelain stone: 55%, aluminum powder: 9% (weight percentage). According to the process described in Example 1, the firing temperature is 1240°C to 1300°C. After testing, the chemical composition of the green body is: SiO255.3% Al2O3 27% P2O5 2.8% CaO 3.9% MgO 0.4% K2O+Na2O 3.9% Ignition loss 6.7%. The amount of crystal phase in the porcelain body is 64% (weight percentage), the main crystal phase is mullite, and the secondary crystal phase is β-Ca 3 (PO 4 O) 2 , Anorthite and feldspar glass account for 34% (weight percentage).
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