Preparation method of green pigment for ceramic high-temperature glaze
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A high-temperature glaze and green technology, applied in the field of preparation of ceramic pigments, can solve the problems of low tinting strength, short process flow, easy agglomeration, etc., and achieve the effect of pure color tone, simple process flow, and strong high temperature resistance
Active Publication Date: 2012-04-04
PINGDING YINGYU PORCELAIN
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Problems solved by technology
At present, the general fine enamel underglaze pigment 3435C green used in ceramic production is extremely unstable at high temperature, and has the disadvantages of large color difference, easy fading and high manufacturing cost.
Chinese invention patent CN1018551B discloses a green series of inorganic pigments, with kaolin as a carrier, zirconium trioxide as a colorant, zinc oxide as a color stabilizer, and one of borax, boric acid, and boron trioxide as a catalyst. The preparation method is to grind and mix the raw materials separately, and then roast at a high temperature of 1000-1200. Its advantages are that the manufacturing process does not pollute the environment, the process flow is short, the operation is simple, and there are many colors. The disadvantage is that the coloring power is low, which is for pigments. , is an important deficiency, secondly, the volatile point of zinc oxide is low, the burning loss is large, the zinc oxide after volatilization is very poisonous, the melting point of borax is extremely low, and it is easy to agglomerate after roasting, which is unfavorable for discharging and grinding
The Chinese invention patent with the authorized notification number CN1028646C uses hard kaolin, chromium oxide, sodium alkali and / or sodium salt as additives to obtain green pigments after high-temperature roasting, and its disadvantage is low tinting power
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Embodiment １
[0010] The raw materials used are all industrial pure, and the ingredients are formulated according to the following weight percentages, Cr ２ o 3 58%, Co. ２ o ３ 10%, Fe ２ o ３ 12%, Al ２ o ３ 14%, ZnO6%. Put the raw materials into the wet ball mill in proportion, according to raw materials: ball: water = 1: 3: 1, grind for 48 to 72 hours, pass through a 250 mesh sieve, dehydrate and dry, roast at 1350°C, grind into powder after cooling, and then wash with water Dry until there is no variegated color.
Embodiment ２
[0012] The raw materials used are all industrial pure, according to the following proportions by weight, Cr ２ o 3 68%, Co. ２ o ３ 5%, Fe ２ o ３ 8%, Al ２ o ３ 11%, ZnO8%. Put the raw materials into the wet ball mill in proportion, according to raw materials: ball: water = 1: 3: 1, grind for 48-72 hours, pass through a 250 mesh sieve, dehydrate and dry, roast at 1350 °C at high temperature, cool and grind into powder, and then use Wash with water until there is no variegation, then dry it for later use.
Embodiment ３
[0014] The raw materials used are all industrial pure, according to the following proportions by weight, Cr ２ o 3 64%, Co. ２ o ３ 8%, Fe ２ o ３ 11%, Al ２ o ３ 12%, ZnO5%. Put the raw materials into the wet ball mill in proportion, according to raw materials: ball: water = 1: 3: 1, grind for 48 to 72 hours, pass through a 250 mesh sieve, dehydrate and dry, roast at 1350°C, grind into powder after cooling, and then wash with water Dry until there is no variegated color.
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Abstract
The invention relates to a preparation method of 3435 green for ceramic high-temperature glaze and provides a preparation method of green pigment for ceramic high-temperature glaze, which is high-temperature resistant, ahs strong tinting power and simple production process; the method comprises the following steps: raw material is ground into powder after burdening, grinding, sieving, dehydration and drying and high-temperature baking are carried out; the weight percentage of the raw materials is that: 58-68 percent of Cr2O3, 5-10 percent of Co2O3, 8-12 percent of Fe2O3, 10-14 percent of Al2O3 and 2-8 percent of ZnO2, when in grinding, the raw materials are added in a wet-type ball grinding mill, the raw material: balls: water is equal to 1: 3: 1, the raw materials are ground for 48-72 hours and then are sieved by a 250-mesh screen, and the baking temperature is 1350 DEG C. the pigment has pure color, strong tinting power and strong high-temperature resistance, and discoloration and color fading phenomenon of the ceramics can not happen when baking is carried out at 1300 DEG C temperature.
Description
technical field [0001] The invention relates to a preparation method of ceramic pigment, in particular to a preparation method of 3435C green for ceramic high-temperature glaze. Background technique [0002] Pigment is an indispensable raw material in the ceramic industry. Each color has its limit use temperature. When the temperature exceeds this temperature, the crystal structure of the color is in an unstable state, and it is easy to be melted or react with other substances and cannot Delivers true color. At present, the fine enamel underglaze pigment 3435C green used in ceramic production is extremely unstable at high temperature, and has the disadvantages of large color difference, easy fading and high manufacturing cost. Chinese invention patent CN1018551B discloses a green series of inorganic pigments, with kaolin as a carrier, zirconium trioxide as a colorant, zinc oxide as a color stabilizer, and one of borax, boric acid, and boron trioxide as a catalyst. The prep...
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Application Information
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