Hua celadon and preparation method thereof

Abstract

The invention discloses Hua celadon and a preparation method thereof, and belongs to the technical field of porcelain for daily use. The Hua celadon is characterized in that the green body of the Hua celadon comprises the following chemical components in percentage by weight: 33 to 42 percent of SiO2, 10 to 18 percent of Al2O3, 8 to 18 percent of CaO, 20 to 28 percent of P2O5, 1 to 5 percent of KNaO, 0.05 to 0.3 percent of Fe2O3, 0.05 to 0.2 percent of TiO2, 1 to 10 percent of MgO, and a trace amount of impurity. The Hua celadon is baked by using natural raw mineral materials, a finished porcelain glaze is fine, smooth and flat in surface, stable in glazing color, and high in adaptability, and is non-toxic and environment-friendly. The whole body of a product has light blue gloss, and the product has high translucency, and smooth, bright and glareless glaze, offers gloss of the moon with white alternating with blue, and is high in heat stability. The product is high-grade porcelain between soft porcelain and hard porcelain; the porcelain glaze is simple, scientific and reasonable in composition; and a process is low in control difficulty and high in applicability, is easy to operate, and particularly suitable for high-grade hotels and houses, and has a display effect of artistic porcelain.

Description

technical field

[0001] Huaqing porcelain and a preparation method thereof belong to the technical field of daily-use ceramics. Background technique

[0002] With the continuous improvement of people's living standards, the environmental protection and decoration of daily-use ceramic products have attracted much attention, especially some high-grade porcelains are more and more popular because of their clear porcelain and beautiful color. At present, many new varieties of daily-use ceramics have emerged, such as Luyu porcelain, steatite porcelain, high-quartz porcelain and bone china. development is gradually enriched.

[0003] Traditional white porcelain has a single color and poor ornamental value, while celadon porcelain is gentle and mellow but does not have a strong sense of color change. By improving the porcelain formula, the present invention develops a new type of ceramic variety that can not only take into account the high transparency of white porcelain, but also...

Examples

Embodiment 1

[0032] Preparation of calcium magnesium phosphate salt:

[0033] Ca(OH) 2 , MgCO 3 by weight Ca 2+ :Mg 2+ = 7: 3 ratio mixing, adding to the reaction device at the same time, adding water to dilute, stirring for 20-30min, making solution A for later use;

[0034] Weigh phosphoric acid according to the molar ratio of Ca+Mg / P=115-1.35, pour it into a stainless steel container, and dilute it to a solution B below 40% for later use;

[0035] Slowly titrate solution B into solution A to make it react evenly. The specific reaction formula is:

[0036] MgCO 3 +Ca(OH) 2 +H 3 PO 4 -→ Ca 2 Mg(PO 4 ) 2 +H 2 O+CO 2

[0037] MgCO 3 +Ca(OH) 2 +H 3 PO 4 -→CaMg(HPO 4 ) 2 +H 2 O+CO 2

[0038] After the reaction, the pH of the solution is 4.5 to 7.0, and it is allowed to stand for 3 to 10 hours to obtain MgCa 2 (PO 4 ) 2 and CaMg(HPO 4 ) 2 The solution C of solution C is press-filtered and dried to obtain a filter cake with a water content of less than 10%;

[0039]...

Embodiment 2

[0046] The batching weight percentage of this embodiment Chinese celadon is composed of: calcium magnesium phosphate 43%, feldspar 8%, Datong soil 22%, Longyan 15%, black mud 4%, Fangzi soil 1%, mixed ball soil 2% and Laiyang soil 5%. Firing method is with embodiment 1. The concrete chemical composition weight percent of gained product is as shown in table 2.

[0047] Among them, the calcium magnesium phosphate salt is Ca(OH) 2 , MgCO 3 by weight Ca 2+ :Mg 2+ = Prepared by mixing in a ratio of 6:4. The preparation method is the same as in Example 1.

Embodiment 3

[0049] The batching weight percent of this embodiment Chinese celadon is composed of: calcium magnesium phosphate 46%, feldspar 11%, Datong soil 15%, Longyan 16%, black mud 3%, mixed ball soil 5%, Fangzi soil 2% and Laiyang soil 2%. Firing method is with embodiment 1. The concrete chemical composition weight percent of gained product is as shown in table 2.

[0050] Among them, the calcium magnesium phosphate salt is Ca(OH) 2 , MgCO 3 by weight Ca 2+ :Mg 2+ = Prepared by mixing in a ratio of 8:2. The preparation method is the same as in Example 1.

technical field

[0001] Huaqing porcelain and a preparation method thereof belong to the technical field of daily-use ceramics. Background technique

[0002] With the continuous improvement of people's living standards, the environmental protection and decoration of daily-use ceramic products have attracted much attention, especially some high-grade porcelains are more and more popular because of their clear porcelain and beautiful color. At present, many new varieties of daily-use ceramics have emerged, such as Luyu porcelain, steatite porcelain, high-quartz porcelain and bone china. development is gradually enriched.

[0003] Traditional white porcelain has a single color and poor ornamental value, while celadon porcelain is gentle and mellow but does not have a strong sense of color change. By improving the porcelain formula, the present invention develops a new type of ceramic variety that can not only take into account the high transparency of white porcelain, but also...

Examples

Embodiment 1

[0032] Preparation of calcium magnesium phosphate salt:

[0033] Ca(OH) 2 , MgCO 3 by weight Ca 2+ :Mg 2+ = 7: 3 ratio mixing, adding to the reaction device at the same time, adding water to dilute, stirring for 20-30min, making solution A for later use;

[0034] Weigh phosphoric acid according to the molar ratio of Ca+Mg / P=115-1.35, pour it into a stainless steel container, and dilute it to a solution B below 40% for later use;

[0035] Slowly titrate solution B into solution A to make it react evenly. The specific reaction formula is:

[0036] MgCO 3 +Ca(OH) 2 +H 3 PO 4 -→ Ca 2 Mg(PO 4 ) 2 +H 2 O+CO 2

[0037] MgCO 3 +Ca(OH) 2 +H 3 PO 4 -→CaMg(HPO 4 ) 2 +H 2 O+CO 2

[0038] After the reaction, the pH of the solution is 4.5 to 7.0, and it is allowed to stand for 3 to 10 hours to obtain MgCa 2 (PO 4 ) 2 and CaMg(HPO 4 ) 2 The solution C of solution C is press-filtered and dried to obtain a filter cake with a water content of less than 10%;

[0039]...

Embodiment 2

[0046] The batching weight percentage of this embodiment Chinese celadon is composed of: calcium magnesium phosphate 43%, feldspar 8%, Datong soil 22%, Longyan 15%, black mud 4%, Fangzi soil 1%, mixed ball soil 2% and Laiyang soil 5%. Firing method is with embodiment 1. The concrete chemical composition weight percent of gained product is as shown in table 2.

[0047] Among them, the calcium magnesium phosphate salt is Ca(OH) 2 , MgCO 3 by weight Ca 2+ :Mg 2+ = Prepared by mixing in a ratio of 6:4. The preparation method is the same as in Example 1.

Embodiment 3

[0049] The batching weight percent of this embodiment Chinese celadon is composed of: calcium magnesium phosphate 46%, feldspar 11%, Datong soil 15%, Longyan 16%, black mud 3%, mixed ball soil 5%, Fangzi soil 2% and Laiyang soil 2%. Firing method is with embodiment 1. The concrete chemical composition weight percent of gained product is as shown in table 2.

[0050] Among them, the calcium magnesium phosphate salt is Ca(OH) 2 , MgCO 3 by weight Ca 2+ :Mg 2+ = Prepared by mixing in a ratio of 8:2. The preparation method is the same as in Example 1.

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