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Process for preparing glaze for electric porcelain using basket type sand mill as main body

A sand mill and basket type technology, applied in the field of preparing electric enamel, can solve the problems of fluctuation of glaze composition, difficult cleaning, long grinding time, etc., and achieve the effect of improving glaze quality, simple structure and stable composition

Inactive Publication Date: 2007-04-25
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ball mill-based pulping system has the following problems: First, the operating efficiency is low, the effective work only accounts for about 1-2%, the grinding time is long, and the energy consumption is large
Second, the grinding body and lining worn during the ball milling process are likely to cause fluctuations in the composition of the glaze
The third is that although the daily maintenance is simple, it takes a long time to replace the ball lining and the regularity is poor (such as adding grinding bodies, etc.); the fourth is that the noise of the ball mill is large and the working conditions are poor
However, due to the high mechanical strength requirements of mechanical parts (springs, bearings, etc.), the vibratory mill has limited its development to large-scale
If the stirring mill is to be enlarged, its overall size must be increased, and a large number of grinding bodies must be used. At present, there are still certain difficulties in enlarging the equipment. The volume of the stirring mill in industry is mostly between 50-500L, and it is necessary to Preparation of return equipment such as dispersing machines, complex pipelines and pumps requires manual feeding, which is labor-intensive, inconvenient to disassemble, difficult to maintain, difficult to clean, and difficult to replace materials. Usually, one equipment only produces one product
It is precisely because of the above reasons that although the stirring mill has good grinding efficiency, it has not been widely used in industrial production.

Method used

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  • Process for preparing glaze for electric porcelain using basket type sand mill as main body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: Preparation of brown glaze slurry in an electric porcelain factory

[0018] The main raw materials of brown glaze for electric porcelain in this factory are feldspar powder, quartz powder, porcelain powder, field soil, calcite powder, cooked talc powder, MnO 2 、Cr 2 o 3 As well as some clay raw materials, the above-mentioned raw materials are all powder or clay that is easy to pulp. According to the recipe requirements, weigh several samples with a total weight of 2kg, put them in a 31-liter stainless steel container, add appropriate amount of water, first use SAI-3 emulsifier to melt the slurry, and then use SMA-0.75 basket sand mill to grind . The test process and results are listed in Table 1.

[0019] Table 1 The experimental process and results of brown glaze preparation in an electric porcelain factory

[0020]

[0021] Add appropriate amount of water to the above two kinds of glaze slurries respectively, adjust to the appropriate viscosi...

Embodiment 2

[0022] Example 2: Factors of Glazing Quality in an Electric Porcelain Factory

[0023] The electric porcelain factory mainly produces high-strength electric porcelain. Its electric porcelain brown glaze has defects such as obvious glaze flowers in several consecutive kilns, which are specifically manifested in the uneven color and luster of the glaze surface. Regarding this phenomenon, the factory has two opinions. One is that the raw material changes, resulting in unstable composition, and the other is that the composition of the glaze slurry changes due to the wear of the grinding body during grinding by the ball mill. It has not been possible to determine the cause of the glaze bloom defect.

[0024] Three glazes with a weight of 2 kg were prepared according to the production recipe that grinding the glaze with a ball mill produced obvious glaze defects. By the process method of implementation example 1, prepared glaze slip, its experimental result is shown in Table 2.

...

Embodiment 3

[0028] Embodiment 3: the preparation of the brown glaze of a certain electric porcelain factory

[0029] The factory mainly produces capacitor bushings, and the main components of its brown glaze are feldspar powder, quartz powder, porcelain powder, field soil, calcite powder, cooked talc powder, MnO 2 、Cr 2 o 3 As well as some clay raw materials, better quality can also be obtained by using a ball mill to make a glaze. In a 1001 stainless steel cylinder, add 80kg of glaze, first disperse with STAY-7.5 high-shear dispersing emulsifier, and then grind with SMA-7.5 basket sand mill. The results are shown in Table 3 below.

[0030]Table 3 Glazing process parameters and glaze slurry results of basket sand mill mechanism

[0031]

[0032] After adding appropriate amount of water to the glaze slurry to adjust the viscosity, the quality of the glaze surface after firing is better than that of the glaze slurry prepared by a ball mill, whether it is applied on a test stri...

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PUM

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Abstract

The invention relates to a method for preparing electric ceramic glaze, especially a method for using basket grinder as main device. Wherein, the inventive method comprises that using shearing emulsifier to emulsify for 5-10min, making slurry, grinding with basket grinder for 1.5-3h, when reaches demands, adding water to adjust the viscosity and density, screening, removing iron, to obtain the final glaze. The invention replaces ball grinder with basket grinder, to reduce the energy consumption (only 40% of ball grinder), and improve efficiency more than 6-10 times, with stable components and high quality.

Description

technical field [0001] The invention relates to a new process for preparing electric enamel, in particular to a brand-new glaze-making process with a basket sand mill as the main grinding equipment and a high-shear emulsifier. Background technique [0002] Glazes are layers of glass attached to the surface of ceramics that enhance their properties. The quality of the glaze slurry directly affects the quality of the glaze layer and glaze surface, and also affects the quality of the product. [0003] There are many types of electric enamel, the common ones are brown glaze, white glaze, sky blue glaze, semiconductor glaze and so on. The prepared glaze slurry must meet the following requirements: first, the components in the glaze slurry must be uniform; second, the particle size and particle size gradation of each component in the glaze slurry must meet the technological requirements; Require. Among these factors, the stability of glaze slurry composition, particle size and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28C1/02
Inventor 李玉平黄莉陈智巧黄志彬张润阳
Owner HUNAN UNIV
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