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Low-temperature semiwhite porcelain and manufacturing method thereof

A production method and low-temperature technology, applied in the field of ceramics, can solve the problems that light-weight dolomite can not meet market demand, long firing time of semi-white porcelain, and high water absorption rate of semi-white porcelain, so as to improve the utilization rate of kilns and improve the efficiency of kilns. Furnace utilization space, high whiteness effect

Active Publication Date: 2016-06-22
FUJIAN DEHUA HUAMAO CERAMICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, low-temperature fast-fired ceramics are still limited to the research of light-weight white cloud pottery and reinforced pottery. Although the firing of light-weight white cloud pottery and reinforced pottery can achieve the purpose of energy saving and environmental protection, with the increasing demand for And people's requirements for the added value of daily-use porcelain are getting higher and higher, and light white cloud pottery and reinforced pottery can no longer meet the current market demand.
[0003] As we all know, during the firing process, ceramic materials need to go through the stages of thermal expansion and cold contraction, and will experience volume shrinkage and linear expansion. At present, the existing half-white porcelain has the following shortcomings: First, the traditional half-white porcelain has the following disadvantages when firing The linear shrinkage rate is often as high as 15% or more; second, the firing temperature of traditional semi-white porcelain is relatively high, generally above 1250°C; third, the firing time of traditional semi-white porcelain is long, and it takes a long time from firing to cooling. More than 11 hours; fourth: the whiteness of traditional semi-white porcelain is low, which affects the aesthetics; fifth, traditional semi-white porcelain has high water absorption and poor high temperature resistance; therefore, a kind of reasonable ingredients can be fired at low temperature It is particularly important to make low-temperature semi-white porcelain with excellent performance and widely applicable to medium and high-grade daily-use ceramics.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Low-temperature semi-white porcelain, the blanks include the following raw materials in parts by mass: 35 parts of Longyan clay, 30 parts of Guangxi kaolin ore, 23 parts of flint, 9 parts of feldspar, 5 parts of talc, and 7 parts of dolomite.

[0031] The manufacturing method of the low-temperature semi-white porcelain includes the following steps:

[0032] Step 1: Put Longyan soil, Guangxi kaolin ore, flint, feldspar, talc and dolomite into a ball mill according to the stated raw material ratio, add water, and ball mill the raw materials for 30 hours. Among them, the balls, raw materials, and The mass ratio of the water is 2:1:0.6;

[0033] Step 2: Test the fineness of the ball-milled slurry, and the sieve residue is between 1.8% as the qualified fineness;

[0034] Step 3: Decrease the slurry for 15 minutes under vacuum conditions of -10000Pa to remove bubbles in the slurry;

[0035] Step 4: Use a high-magnetic rod to remove iron and impurities from the degassed slurry;

[0036]...

Embodiment 2

[0043] Low-temperature semi-white porcelain, its blanks include the following raw materials in parts by mass: 30 parts of Longyan clay, 25 parts of Guangxi kaolin ore, 20 parts of flint, 7 parts of feldspar, 2 parts of talc, and 5 parts of dolomite.

[0044] The manufacturing method of the low-temperature semi-white porcelain includes the following steps:

[0045] Step 1: Put Longyan soil, Guangxi kaolin ore, flint, feldspar, talc, and dolomite into a ball mill according to the raw material ratio, add water, and ball mill the raw materials for 24 hours. Among them, the balls, raw materials, and The mass ratio of the water is 2:1:0.6;

[0046] Step 2: Test the fineness of the ball-milled slurry, and the sieve residue is between 2% as the qualified fineness;

[0047] Step 3: Decrease the slurry for 15 minutes under vacuum conditions of -10000Pa to remove bubbles in the slurry;

[0048] Step 4: Use a high-magnetic rod to remove iron and impurities from the degassed slurry;

[0049] Step 5:...

Embodiment 3

[0056] Low-temperature semi-white porcelain, and its blanks include the following raw materials in parts by mass: 40 parts of Longyan clay, 35 parts of Guangxi kaolin ore, 28 parts of flint, 12 parts of feldspar, 9 parts of talc, and 10 parts of dolomite.

[0057] The manufacturing method of the low-temperature semi-white porcelain includes the following steps:

[0058] Step 1: Put Longyan soil, Guangxi kaolin ore, flint, feldspar, talc and dolomite into a ball mill according to the stated raw material ratio, add water, and ball mill the raw materials for 36 hours. Among them, the ball The mass ratio of the water is 2:1:0.6;

[0059] Step 2: Test the fineness of the ball-milled slurry, and the sieve residue is between 1.5% as the qualified fineness;

[0060] Step 3: Decrease the slurry for 15 minutes under vacuum conditions of -10000Pa to remove bubbles in the slurry;

[0061] Step 4: Use a high-magnetic rod to remove iron and impurities from the degassed slurry;

[0062] Step 5: The sl...

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Abstract

The invention discloses a low-temperature semiwhite porcelain and a manufacturing method thereof, belonging to the technical field of ceramics. The blank of the low-temperature semiwhite porcelain comprises the following raw materials in parts by mass: 30-40 parts of Longyan clay, 25-35 parts of Gangxi kaolin raw ore, 20-28 parts of flint, 7-12 parts of feldspar, 2-9 parts of talcum and 5-10 parts of dolomite. The low-temperature semiwhite porcelain can be quickly fired at the low temperature of 1000 DEG C, and can be discharged out of the kiln only by 7-8 hours from firing to cooling. The linear shrinkage is low and can be kept at 12% or below. The low-temperature semiwhite porcelain has high hardness and excellent whiteness (85% or above), and has comparable whiteness with light-weight porcelain. The low-temperature semiwhite porcelain has low water absorptivity (which can be kept at 3% or below and can reach the porcelain industry standard), has the advantages of high strength excellent high temperature resistance and excellent microwave resistance, can be subjected to 180-DEG C drying oven testing more than twice, and can pass the microwave oven and dishwasher performance test. The low-temperature semiwhite porcelain has wide applicability, and can be widely used for producing medium / high-grade domestic ceramics.

Description

Technical field [0001] The invention belongs to the technical field of ceramics, and specifically relates to a low-temperature semi-white porcelain and a manufacturing method thereof. Background technique [0002] At present, low-temperature fast-fired ceramics are still limited to the research on lightweight dolomite and strengthened ceramics. Although the firing of lightweight dolomite and strengthened ceramics can achieve the purpose of energy conservation and environmental protection, as the demand for ceramics continues to increase And people have higher and higher requirements for the added value of daily-use porcelain. Lightweight dolomite and strengthened ceramics have gradually been unable to meet the current market needs. [0003] As we all know, ceramic materials need to undergo thermal expansion and contraction during the firing process, and will undergo volume shrinkage and linear expansion. The current existing half-white porcelain has the following shortcomings: Firs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/13C04B33/16C04B33/34
CPCC04B33/13C04B33/16C04B33/34C04B2235/321C04B2235/3463C04B2235/656C04B2235/96C04B2235/9615C04B2235/9646
Inventor 陈能谨
Owner FUJIAN DEHUA HUAMAO CERAMICS CO LTD
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