阅读说明：本技术 一种耐热陶器及其制作方法 (Heat-resistant pottery and manufacturing method thereof ) 是由 贺晓东 于 2019-09-30 设计创作，主要内容包括：本发明公开了一种耐热陶器,包括以下按照重量百分比的成分：二氧化硅46%-49.5%、三氧化二铝35.5%-38.5%、三氧化二铁0-5%、氧化钙0-2%、氧化镁0-2%、氧化钾0.8%-1.8%、氧化钠0-1.5%、二氧化钛0-2%、烧失部分7%-9%。本发明还公开了所述耐热陶器的制作方法,本发明制作的耐热陶器由于陶器胚体中的三氧化二铝和二氧化硅在1145-1230℃的高温烧制中相互结合生成具有热稳定性的莫来石,使得产品在烧成后的热稳定性得到了提升,从而使得陶器成品可用于明火加热烹饪,且使用寿命得到了提升。(The invention discloses heat-resistant pottery, which comprises the following components in percentage by weight: 46 to 49.5 percent of silicon dioxide, 35.5 to 38.5 percent of aluminum oxide, 0 to 5 percent of ferric oxide, 0 to 2 percent of calcium oxide, 0 to 2 percent of magnesium oxide, 0.8 to 1.8 percent of potassium oxide, 0 to 1.5 percent of sodium oxide, 0 to 2 percent of titanium dioxide and 7 to 9 percent of loss on ignition. The invention also discloses a manufacturing method of the heat-resistant pottery, and the heat-resistant pottery is characterized in that aluminum oxide and silicon dioxide in the pottery blank are combined with each other in the high-temperature firing at the temperature of 1145-1230 ℃ to generate mullite with thermal stability, so that the thermal stability of the product after firing is improved, the pottery finished product can be used for open fire heating cooking, and the service life is prolonged.)

1. The heat-resistant pottery is characterized by comprising the following components in percentage by weight: 46 to 49.5 percent of silicon dioxide, 35.5 to 38.5 percent of aluminum oxide, 0 to 5 percent of ferric oxide, 0 to 2 percent of calcium oxide, 0 to 2 percent of magnesium oxide, 0.8 to 1.8 percent of potassium oxide, 0 to 1.5 percent of sodium oxide, 0 to 2 percent of titanium dioxide and 7 to 9 percent of loss on ignition.

2. The heat-resistant pottery according to claim 1, comprising the following components in percentage by weight: 48.50% of silicon dioxide, 36.5% of aluminum oxide, 2% of ferric oxide, 0.86% of calcium oxide, 1% of magnesium oxide, 1.25% of potassium oxide, 0.39% of sodium oxide, 1.50% of titanium dioxide and 8% of loss on ignition.

3. The heat-resistant pottery according to claim 1, comprising the following raw materials: guizhou soil, Longchang soil, quartz sand and Yongchuan soil.

4. The heat-resistant pottery according to claim 2, comprising the following raw materials in percentage by weight: 54.15 percent of Guizhou soil, 9.76 percent of Longchang soil, 25.4 percent of quartz sand and 10.69 percent of Yongchuan soil.

5. A method for manufacturing heat-resistant pottery according to any one of claims 1 to 4, comprising the steps of:

1) mixing Guizhou soil, Longchang soil, quartz sand and Yongchuan soil according to a proportion, and stirring and grinding the mixture by a ball mill to obtain a mixture A;

2) filtering the mixture A by using a 250-mesh screen;

3) grouting and rolling the filtered mixture A to treat a pottery blank B;

4) and (3) drying the pottery blank body B, putting the pottery blank body B into a kiln for heating roasting treatment, and cooling treatment after the heating roasting treatment to obtain the heat-resistant pottery with the heat-resistant function.

6. The method for manufacturing heat-resistant pottery according to claim 5, wherein the mixture A is filtered by the 250-mesh screen in the step 2), and the filtered residue is 5-35%.

7. The method for manufacturing heat-resistant pottery according to claim 5, wherein the maximum temperature of the temperature-raising roasting treatment in step 4) is between 1145 ℃ and 1230 ℃.

8. The method for manufacturing heat-resistant pottery according to claim 5, wherein in the step 4), the temperature-raising roasting high-temperature section is carried out for a holding time of not less than 30 minutes.

Technical Field

The invention relates to the field of pottery, in particular to heat-resistant pottery and a manufacturing method thereof.

Background

The pottery is made of clay or pottery clay through kneading, shaping and baking.

However, the heat resistance of the existing pottery products cannot meet the requirement, and the pottery products have cracks in the high-temperature heating process, so that the cracks can be further reflected when the pottery products are used for open-fire heating cooking, and the service life of the pottery products is reduced, so the invention provides the heat-resistant pottery products and the manufacturing method thereof.

Disclosure of Invention

The present invention is directed to a method for manufacturing heat-resistant pottery, which solves the above problems.

In order to achieve the purpose, the invention provides the following technical scheme:

the heat-resistant pottery comprises the following components in percentage by weight: 46 to 49.5 percent of silicon dioxide, 35.5 to 38.5 percent of aluminum oxide, 0 to 5 percent of ferric oxide, 0 to 2 percent of calcium oxide, 0 to 2 percent of magnesium oxide, 0.8 to 1.8 percent of potassium oxide, 0 to 1.5 percent of sodium oxide, 0 to 2 percent of titanium dioxide and 7 to 9 percent of loss on ignition.

The further scheme of the invention is as follows: comprises the following components in percentage by weight: 48.50% of silicon dioxide, 36.50% of aluminum oxide, 2% of ferric oxide, 0.86% of calcium oxide, 1% of magnesium oxide, 1.25% of potassium oxide, 0.39% of sodium oxide, 1.50% of titanium dioxide and 8% of loss on ignition.

The invention further comprises the following scheme: comprises the following raw materials: guizhou soil, Longchang soil, quartz sand and Yongchuan soil.

The invention further comprises the following scheme: the composite material comprises the following raw materials in percentage by weight: 54.15 percent of Guizhou soil, 9.76 percent of Longchang soil, 25.4 percent of quartz sand and 10.69 percent of Yongchuan soil.

The method for manufacturing the heat-resistant pottery comprises the following steps:

1) mixing silicon dioxide, aluminum oxide, ferric oxide, calcium oxide, magnesium oxide, potassium oxide, sodium oxide and titanium dioxide according to a ratio, and stirring and grinding by using a ball mill to obtain a mixture A;

2) filtering the mixture A by using a 250-mesh screen;

3) grouting and rolling the filtered mixture A to treat a pottery blank B;

4) and (3) drying the pottery blank body B, putting the pottery blank body B into a kiln for heating roasting treatment, and cooling treatment after the heating roasting treatment to obtain the heat-resistant pottery with the heat-resistant function.

As a still further scheme of the invention: in the step 2), the mixture A is filtered by the 250-mesh screen, and residues reach 5% -35%.

As a still further scheme of the invention: in the step 4), the maximum temperature of the temperature-raising roasting treatment is between 1145 ℃ and 1230 ℃.

As a still further scheme of the invention: in the step 4), the heat preservation time of the high-temperature section of the temperature-rising roasting is not less than 30 minutes.

Compared with the prior art, the invention has the beneficial effects that: the aluminum oxide and the silicon dioxide in the pottery blank body B are mutually combined in high-temperature firing at the temperature of more than 1000 ℃ to generate mullite with thermal stability, so that the product has certain thermal stability after firing; minerals such as potassium oxide, sodium oxide, magnesium oxide and the like in the mixture A can better promote aluminum oxide and silicon dioxide to be combined to generate more mullite in a high-temperature molten state; the ceramic blank B with the water absorption rate of more than 3% is obtained by controlling the firing time and the firing temperature of the ceramic blank B, the good water absorption rate can delay the heating speed of the ceramic blank B in the heating process, and the ceramic blank B is prevented from cracking due to stress generated by too fast temperature change; the expansion space and buffer are enough for the expansion of the pottery embryo body B in the heating process by controlling the size of the particles in the formula, so that the expansion stress in the heating process is greatly reduced.

Detailed Description

The technical solution of the present invention will be described in further detail with reference to specific embodiments.