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Cristobalite-based electric ceramic prepared from waste quartz crucible and preparation method thereof

A technology of a quartz crucible and a manufacturing method, applied in the field of cristobalite electric porcelain and its manufacturing, can solve the problems of single way, cannot effectively alleviate or solve the waste of resources, etc., and achieve the effects of reducing pollution, saving non-renewable resources and reducing production costs.

Inactive Publication Date: 2014-02-05
JINGDEZHEN CERAMIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Apparently, the current existing technology has a single way of reusing waste quartz crucibles, which cannot effectively alleviate or solve the waste of resources and the pressure on the environment caused by the increasing number of waste quartz crucibles.

Method used

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  • Cristobalite-based electric ceramic prepared from waste quartz crucible and preparation method thereof
  • Cristobalite-based electric ceramic prepared from waste quartz crucible and preparation method thereof
  • Cristobalite-based electric ceramic prepared from waste quartz crucible and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] 1. In this embodiment, the cristobalite electric porcelain prepared by waste quartz crucible is composed of the following materials:

[0025] Suzhou soil 40wt%, waste quartz crucible powder 38wt%, potassium feldspar 20wt%, bauxite 2wt%.

[0026] 2. The manufacturing method of the cristobalite electric porcelain of the present embodiment is as follows:

[0027] 1) The above materials were mixed by wet ball milling for 12 hours, and passed through a 325 mesh sieve to obtain the mixture;

[0028] 2) The mixed material is plastically formed, that is, part of the water in the mixed material is removed by pressure filtration, and then the mud is smelted to obtain a mud with a moisture content of about 25%, and then molded by gypsum mold blank; then the molded Put the plastic body into an electric constant temperature blast drying oven and dry it at 100°C for 6 hours to obtain a cristobalite electric porcelain green body;

[0029] 3) Firing the cristobalite electric porcelai...

Embodiment 2

[0031] 1. In this embodiment, the cristobalite electric porcelain prepared by waste quartz crucible is composed of the following materials:

[0032] Suzhou soil 60wt%, waste quartz crucible powder 20wt%, potassium feldspar 15wt%, bauxite 5wt%.

[0033] 2. The manufacturing method of the cristobalite electric porcelain of the present embodiment is as follows:

[0034] 1) The above materials were mixed by wet ball milling for 12 hours, and passed through a 325 mesh sieve to obtain the mixture;

[0035] 2) After drying the mixed material into powder at 100°C, add polyvinyl alcohol (concentration: 4%) with an amount of 2wt% of the above material, mix, sieve and granulate, and dry press the blank under 18MPa pressure after granulation Molded, placed in an electric constant temperature blast drying oven and dried at a temperature of 100°C for 6 hours to obtain a cristobalite electric porcelain green body;

[0036] 3) Firing the cristobalite electric porcelain blank at 1350° C. and...

Embodiment 3

[0038] 1. In this embodiment, the cristobalite electric porcelain prepared by waste quartz crucible is composed of the following materials:

[0039] Suzhou soil 70wt%, waste quartz crucible powder 10wt%, potassium feldspar 15wt%, bauxite 5wt%.

[0040] 2. The manufacturing method of the cristobalite electric porcelain of the present embodiment is as follows:

[0041] 1) The above materials were mixed by wet ball milling for 12 hours, and passed through a 325 mesh sieve to obtain the mixture;

[0042] 2) After drying the mixed material into powder at 100°C, add polyvinyl alcohol (concentration: 4%) with an amount of 1wt% of the above material, mix, sieve and granulate, and dry press the blank under 20MPa pressure after granulation Molded, placed in an electric constant temperature blast drying oven and dried at a temperature of 100°C for 6 hours to obtain a cristobalite electric porcelain green body;

[0043] 3) Firing the cristobalite electric porcelain blank at a temperatur...

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Abstract

The invention discloses a cristobalite-based electric ceramic prepared from waste quartz crucible, which consists of the following materials: 40-70wt% of Suzhou soil, 10-40wt% of waste quartz crucible powder, 15-20wt% of potassium feldspar and 2-10wt% of bauxite. The invention further discloses a preparation method of the cristobalite-quality electric ceramic. According to the invention, the waste resource is fully used, so the demand of the ceramic industry on the crude quartz mine is relieved, the non-renewable resource is saved and the production cost is reduced; and moreover, stress of the waste to the environment is relieved, a new direction for preparation of the cristobalite-quality electric ceramic is developed.

Description

technical field [0001] The invention relates to the technical field of electric porcelain materials, in particular to a cristobalite electric porcelain prepared by using a discarded quartz crucible and a manufacturing method thereof. Background technique [0002] Quartz crucible is a key component used in the process of polycrystalline silicon or monocrystalline silicon ingot casting for solar cells, and is used to load high-purity silicon raw materials for melting. During the silicon ingot casting process, the silicon material is generally melted and crystallized at a high temperature of 1550°C, so the quartz crucible is required to work continuously for more than 50 hours at a time, and the whole process must not be broken, and the components of the crucible must not pollute the silicon material. Since the quartz crucible will be crystallized, deformed and broken during use, and the purity of the silicon material used in the manufacture of solar photovoltaic silicon is abo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/132
CPCY02P40/60
Inventor 王艳香孙健范学运杨志胜黄丽群朱海翔
Owner JINGDEZHEN CERAMIC UNIV