Apparel Production Terms and Processes最新文献

Apparel Production Terms and Processes Pub Date : 1900-01-01 DOI: 10.5040/9781501315602.ch-010

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Raw Materials 原材料

Apparel Production Terms and Processes Pub Date : 1900-01-01 DOI: 10.1002/9780470959718.ch3

L. Pavlunenko

{"title":"Raw Materials","authors":"L. Pavlunenko","doi":"10.1002/9780470959718.ch3","DOIUrl":"https://doi.org/10.1002/9780470959718.ch3","url":null,"abstract":"Mullite composed of 72% Al2O3 and 28% SiO2 finds ever-increasing application in high-temperature technologies; mullite-based ceramics display low heat conductivity and high strength and are in widespread use as heat-insulating and refractory materials. For all its superior thermophysical properties and large natural mineral reserves, mullite production in Russia is still in the early stage of development. The demands of the domestic mullite market are at present mainly satisfied by the supply of ready-made mullite refractories purchased from foreign manufacturers [1, 2]. In Russia, a few manufacturers are concerned with the production of mullite-based refractory materials. Mullite materials are available from Ogneupory Joint-Stock Co. (Tula Region) and Semiluki Refractory Plant Joint-Stock Co. (Semiluki, Voronezh Region); however, they contain less than 62% Al2O3 and their refractoriness is much inferior to that of pure mullite materials. The best raw materials for production of mullite are quartz-topaz ores. In Siberia, the world’s largest deposits of quartz-topaz ores have been discovered with an overall topaz content of 200 million tons. The domestic market demand for topaz is about 300 thousand tons. The precursor concentrate obtained by ore flotation contains some 40% aluminum oxide, 45% silicon dioxide, and 10% hydroxyl fluoride compounds. To extract mullite, part of the silicon dioxide and fluorine should be removed. The processing of quartz-topaz ore includes two major stages: (i) flotation beneficiation in the topaz component and (ii) desiliconization and sintering of the desiliconized concentrate to a mullite condition. A schematic of the process and the averaged composition of initial, intermediate, and final products are shown in Fig. 1. Desiliconization and sintering (mullitization) of the desiliconized semi-finished product are critical and powerconsuming stages of the quartz-topaz-to-mullite conversion. For removing the excess SiO2, aluminum fluoride was used; this interacts with SiO2 and converts it to ammonium hexafluorosilicate [3]. An advantage of ammonium fluoride as a desiliconizing agent is that it can be completely recovered [4]. The cycle of fluoroammonium desiliconization is shown below: Refractories and Industrial Ceramics Vol. 47, No. 3, 2006","PeriodicalId":197139,"journal":{"name":"Apparel Production Terms and Processes","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115551538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 148

Trim and Surface Embellishments 装饰和表面装饰

Apparel Production Terms and Processes Pub Date : 1900-01-01 DOI: 10.5040/9781501315602.ch-011

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ASTM and ISO Seam Classifications ASTM和ISO接缝分类

Apparel Production Terms and Processes Pub Date : 1900-01-01 DOI: 10.5040/9781501315602.ch-022

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The Global Scope of Apparel Production 服装生产的全球范围

Apparel Production Terms and Processes Pub Date : 1900-01-01 DOI: 10.5040/9781501315602.ch-001

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Thread Specifications 螺纹规格

Apparel Production Terms and Processes Pub Date : 1900-01-01 DOI: 10.5040/9781501315602.ch-008

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ASTM and ISO Stitch Classifications ASTM和ISO缝合分类

Apparel Production Terms and Processes Pub Date : 1900-01-01 DOI: 10.5040/9781501315602.ch-021

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Apparel Product Categories 服装产品类别

Apparel Production Terms and Processes Pub Date : 1900-01-01 DOI: 10.5040/9781501315602.ch-004

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Brand Categories and Price Point Classifications for Mass-Produced Apparel 批量生产服装的品牌分类和价格点分类

Apparel Production Terms and Processes Pub Date : 1900-01-01 DOI: 10.5040/9781501315602.ch-003

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Product Specifications 产品规格

Apparel Production Terms and Processes Pub Date : 1900-01-01 DOI: 10.5040/9781501315602.ch-024

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