High-temperature composite pipe suitable for quartz sand chlorination purification industry
Through the use of high -temperature composite tubes during the purification process of quartz sand chloride, combined with the inner quartz tube and the heating flange connection structure of high -temperature resistance to the outer layer, the problem of softening and deformation of quartz tubes at high temperatures realized the high temperature environment. The effect of stable support and high purity chloride.
Patent Information
- Application Number
- CN202421596412.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-08
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-07-08
AI Technical Summary
Existing quartz tubes will soften and deform under high temperature conditions during the chlorination and purification of quartz sand, and cannot effectively support the high-temperature environment.
The high -temperature compound tube structure, including the inner quartz tube and the high temperature resistance layer of the outer layer, to ensure that the outer high temperature resistance and the inner quartz tube are simultaneously synchronized at high temperature at high temperature at high temperature.
Under high temperature conditions, the outer layer to resist the high temperature can effectively support the inner quartz tube, ensure that it does not soften and deform at a temperature above 1400 ° C, extend the service life, and increase the purity of the chloride of the quartz sand.
Smart Images
Figure CN222416498U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of quartz sand purification, in particular to a high-temperature composite pipe suitable for the quartz sand chlorination purification industry. Background Art
[0002] High-purity quartz sand is a high-purity non-metallic mineral raw material with a particle size concentrated in the range of 0.1-0.45 mm, which is produced from natural quartz minerals through a series of physical and chemical purification technologies. The internationally recognized high-purity quartz sand is a high-tech product that exceeds the IOTA-CG standard of the United States Unimin Company, and the content of twelve element impurities (Al, K, Na, Li, Ca, Mg, Fe, Mn, Cu, Cr, Ni, B) is less than 20ppm, and the alkali metals (K, Na, Li) are less than 1ppm respectively.
[0003] High-purity quartz sand is the main raw material for producing high-purity quartz glass tubes / rods and quartz glass crucibles. Quartz glass is a single-component glass of silicon dioxide. This glass has high hardness, up to mode 7, and has a series of excellent physical and chemical properties such as high temperature resistance, low expansion coefficient, thermal shock resistance, corrosion resistance, good insulation, and high light transmittance. Therefore, quartz glass is widely used in high-end electric light sources, large-scale and ultra-large-scale integrated circuits, solar cells, optical fibers, lasers, aerospace, military and other industries.
[0004] The raw material of high-purity quartz sand is natural quartz ore. In addition to quartz, quartz ore usually contains a variety of impurity minerals, such as mica, feldspar, iron-titanium oxide, etc. Quartz itself often contains some metal or non-metallic element impurities and fluid impurities due to crystal structure defects or fine cracks. Most impurities can be removed by flotation, magnetic separation, gravity separation, acid leaching, calcination and other means, but it is difficult to achieve the standard of less than 1ppm for some elements in high-purity quartz sand.
[0005] In the prior art, when quartz sand is purified by chlorination, the purification temperature will reach above 1400°C, at which time the quartz tube will soften and deform, and the existing quartz tube cannot be used for purification under such high temperature conditions. Utility Model Content
[0006] The utility model provides a high-temperature composite pipe suitable for quartz sand chlorination purification industry to solve the problems raised in the background technology.
[0007] In order to achieve the above purpose, the utility model provides a high-temperature composite pipe suitable for the quartz sand chlorination purification industry, including an inner quartz tube, an outer high-temperature resistant layer and a thermal expansion flange connection structure;
[0008] The outer high temperature resistant layer is arranged outside the inner quartz tube;
[0009] The thermal expansion flange connection structure includes a high temperature resistant layer fixing flange, a quartz tube fixing flange and a plurality of flange fixing bolts;
[0010] The high temperature resistant layer fixing flange is fixed on the outer high temperature resistant layer, the quartz tube fixing flange is fixed on the inner quartz tube, and a plurality of flange fixing bolts fasten the high temperature resistant layer fixing flange and the quartz tube fixing flange.
[0011] Preferably, the thermal expansion flange connection structure is arranged at one end or both ends of the high-temperature composite pipe.
[0012] Preferably, the length of the high temperature composite pipe is 0 mm-6000 mm.
[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0014] The outer high-temperature resistant layer of the utility model can play a supporting role for the inner quartz tube well under high temperature. The thermal expansion and contraction of the outer high-temperature resistant layer under high temperature conditions is much greater than that of the inner quartz tube. At this time, by installing the thermal expansion and contraction flange connection structure, it can be ensured that the thermal expansion and contraction of the outer high-temperature resistant layer and the inner quartz tube are the same, and it can also be ensured that the outer high-temperature resistant layer and the inner quartz tube rotate synchronously under the power structure, which can be suitable for the high-temperature environment of quartz sand chlorination purification. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solution of the utility model, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are an embodiment of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:
[0016] Figure 1 It is a structural schematic diagram of a high-temperature composite pipe applicable to the quartz sand chlorination purification industry disclosed in an embodiment of the utility model;
[0017] In the figure: inner quartz tube 1, outer high temperature resistant layer 2, thermal expansion flange connection structure 3, high temperature resistant layer fixing flange 4, quartz tube fixing flange 5, flange fixing bolts 6. DETAILED DESCRIPTION
[0018] The scheme proposed by the utility model is further described in detail below in combination with the accompanying drawings and specific implementation methods. According to the following description, the advantages and features of the utility model will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the implementation method of the utility model. In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated by the accompanying drawings of this specification are only used to match the content disclosed in the specification, so that people familiar with this technology can understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so it has no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the utility model can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the utility model.
[0019] Figure 1 The utility model discloses a high-temperature composite pipe suitable for the quartz sand chlorination purification industry, including an inner quartz tube 1, an outer high-temperature resistant layer 2 and a thermal expansion flange connection structure. The outer high-temperature resistant layer 2 is arranged outside the inner quartz tube 1. The outer high-temperature resistant layer 2 can support the inner quartz tube 1 well at high temperatures. Preferably, the outer high-temperature resistant layer 2 can be one or more of ceramics, mullite, zirconium oxide, aluminum oxide, silicon carbide, etc. The melting points of these high-temperature resistant materials range from 2000°C to 2700°C, and they have the characteristics of high hardness, corrosion resistance, and not easy to deform.
[0020] The thermal expansion flange connection structure includes a high temperature resistant layer fixed flange 4, a quartz tube fixed flange 5 and a plurality of flange fixing bolts 6; the high temperature resistant layer fixed flange 4 is fixed on the outer high temperature resistant layer 2, the quartz tube fixed flange 5 is fixed on the inner quartz tube 1, and a plurality of flange fixing bolts 6 fasten the high temperature resistant layer fixed flange 4 and the quartz tube fixed flange 5 to form a thermal expansion flange connection structure. Preferably, three or more flange fixing bolts 6 are required.
[0021] When quartz sand is purified by chlorination, the temperature will reach above 1400°C, at which time the inner quartz tube 1 will soften and deform, and the outer high temperature resistant layer 2 can support the inner quartz tube 1 well.
[0022] Under high temperature conditions, the thermal expansion of the outer high temperature resistant layer 2 is much greater than that of the inner quartz tube 1. At this time, by installing the thermal expansion flange connection structure, it can be ensured that the thermal expansion of the outer high temperature resistant layer 2 and the inner quartz tube 1 are the same, and it can also be ensured that the outer high temperature resistant layer 2 and the inner quartz tube 1 rotate synchronously under the power structure.
[0023] The thermal expansion flange connection structure can be installed at both ends of the high-temperature composite pipe or only at one end, and the above effect can be achieved. Through the above structure, the reaction temperature can be kept at 1400°C for a long time, which is conducive to the high-temperature crystal transformation of quartz sand and improves the purity of quartz sand after chlorination. The length of the high-temperature composite pipe is 0mm-6000mm, and technicians in this field can set the applicable length as needed.
[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements. In addition, the term "connection" herein means that A and B are directly connected, or that A and B are indirectly connected, such as A and B are connected through C, or even through more components such as C and D, and A and B can be connected in one piece, or in separate pieces, or removable, or fixed. The term "optional" herein means that the technical feature can be combined or not combined with any feature in the text.
[0025] Although the content of the utility model has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the utility model. After reading the above content, various modifications and substitutions of the utility model will be obvious to those skilled in the art. Therefore, the protection scope of the utility model should be limited by the attached claims.
Claims
1. A high-temperature composite pipe suitable for the quartz sand chlorination purification industry, characterized by: It includes an inner quartz tube, an outer high temperature resistant layer and a thermal expansion flange connection structure; The outer high temperature resistant layer is arranged outside the inner quartz tube; The thermal expansion flange connection structure includes a high temperature resistant layer fixing flange, a quartz tube fixing flange and a plurality of flange fixing bolts; The high temperature resistant layer fixing flange is fixed on the outer high temperature resistant layer, the quartz tube fixing flange is fixed on the inner quartz tube, and a plurality of flange fixing bolts fasten the high temperature resistant layer fixing flange and the quartz tube fixing flange.
2. The high temperature composite pipe according to claim 1, characterized in that: The thermal expansion flange connection structure is arranged at one end or both ends of the high-temperature composite pipe.
3. The high temperature composite pipe according to claim 1, characterized in that: The length of the high-temperature composite pipe is 0mm-6000mm.