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通过过滤理论分析,确定了正确的过滤操作方式,工业生产结果表明:过滤方法能够去除硅酸钠--炭渣颗粒溶液中粒度不一、比重较小的炭渣颗粒,得到透明的水玻璃溶液。 相似文献
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为了解不同浓度Na OH溶液处理镨黄表面对其粒径的影响。配制了不同浓度的Na OH溶液对镨黄进行处理并用无水乙醇淋洗过滤,运用分光光度计,激光粒度仪分别对其滤液和滤渣进行分析;对不同浓度Na OH溶液处理后镨黄进行纯水分散,对照未处理的镨黄,用显微镜和自然沉降实验进行分析。结果:过滤处理后滤液分层,但无水乙醇与Na OH溶液混合物为透明不分层;其中30%Na OH处理的滤液中小颗粒最多,10%Na OH处理的滤液中小颗粒最少;激光粒度仪测量干燥滤渣时,颗粒大小顺序为:原镨黄10%Na OH镨黄20%Na OH镨黄30%Na OH镨黄。200倍的显微镜下观察到纯水中的粒径大小为:原镨黄10%Na OH处理镨黄20%Na OH处理镨黄30%,水中的完全沉降时间和沉淀表面层白色深浅顺序为10%Na OH镨黄20%Na OH镨黄30%Na OH镨黄。结果表明:Na OH处理过的镨黄在无水乙醇中的相容性大于水中且阻碍乙醇和水的互溶;浓度高的Na OH溶液处理镨黄,过滤后滤液中小颗粒量越多,滤渣的小颗粒量越少,但滤渣干燥后颗粒的平均粒径越大,而在纯水中的颗粒越小,沉降时间越长,完全沉淀后沉淀表面白色越深。 相似文献
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使用低温炭化-高温活化两步工艺处理典型的医药废盐,成功回收了无机盐和活性炭材料。低温炭化阶段将废盐中的有机物转变为不溶性残余炭渣,通过简单的溶解、过滤即可实现无机盐与有机物的分离;残余炭渣作为炭前体经过活化可得到活性炭材料。使用原子荧光光谱法、气相色谱-质谱联用法对废盐成分进行分析,采用Friedman法和Starink法计算废盐焚烧的活化能,通过管式炉模拟试验对废盐低温炭化条件进行优化,最后采用氢氧化钾浸渍法活化残余炭渣以制备活性炭。结果表明,废盐中溶解性有机碳在空气气氛、350 ℃、60 min条件下去除率达到99.98%,得到的无机盐产品符合GB/T 6009—2014《工业无水硫酸钠》Ⅲ类要求。残余炭渣经活化所得活性炭对亚甲基蓝的吸附容量达到762.86 mg/g。 相似文献
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硅藻土是当代照相明胶生产的后处理工序中愈来愈广泛使用的一种过滤剂。它的功能是除去明胶中的非胶朊蛋白和其它有色有机质。明胶工业生产的实践表明:有的硅藻土过滤性能优良,而有的硅藻土则效果很差。本工作收集了广泛使用的几个典型的硅藻土样品,对比了它们的过滤性能并用电镜和X射线特征能谱(EDAX)对这些样品的形貌,晶态及组成进行了初步研究,指出了硅藻土的过滤性能的好坏与其形貌、晶态密切相关。 相似文献
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《分离科学与技术》2012,47(17):2700-2706
The performance of classical families of hydrocyclones (Bradley, Rietema, and Demco) has been compared with a novel equipment, the filtering of hydrocyclones. In the filtering of hydrocyclones, the conical section is replaced by a conical filtering wall producing another liquid stream leaving the equipment besides underflow and overflow streams. In the present paper, the influence of the filtering conical wall in the classical geometries was analyzed by experimental and CFD studies. The results showed that the replacement of the conical section of hydrocyclones built with classical geometries by a filtering cone have significantly changed their performance. In general, the separation performance and the capacity can be enhanced with the filtering hydrocyclones. 相似文献
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照相明胶后处理用硅藻土的电子显微术的研究 总被引:1,自引:1,他引:0
硅藻土是当代照相明胶大生产后处理工序中愈来愈广泛使用的一种过滤剂,它的功能是除去明胶中的非胶原蛋白和其它有色有机质。明胶工业生产的实践表明,有的硅藻土过滤性能优良,而有的硅藻土则效果很差。本工作收集了广泛使用的几个典型的硅藻土样品,对比了它们的过滤性能,并用电镜和X射线特征能谱(EDAX)对这些样品的形貌、晶态及组成进行了初步研究,指出了硅藻土的过滤性能的好坏与其形貌、晶态密切相关。 相似文献
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通过对配方料泥浆、高岭土泥浆、粘土泥浆分别添加MgCl2,以提高泥浆的粘度及电导率,从而导致压滤速度提高的描述。探讨了泥浆压滤速度的机理及规律。实验表明加入适量的MgCl2会改变泥浆中粘土颗粒的排列方式,使得压滤过程中最初形成的一层滤饼较疏松,便于滤水的顺利排出。 相似文献
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V. I. Solov’ev E. S. Lukin V. I. Naumov A. V. Solov’ev 《Refractories and Industrial Ceramics》1998,39(9-10):353-355
Various practical methods for fabricating filtering glass ceramic materials using powders of special crystallizable glass are considered together with the special features of their structure formation. The advantages and disadvantages of the presented variants are described. It is shown that the use of pyroceram components under specific conditions determines the high performance parameters of filtering materials. 相似文献
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料浆脱水是湿磨干烧的关键工艺,其脱水方法一般有过滤法,喷浆法和混合法三种,其中过滤法包括真空过滤和加压过滤两种,在国外都有应用,国内则大都用前者。南京院在皖维公司1000t/d生产线和白马山厂850t/d生产经上则采用了厢式压滤脱水法,文中就这两种过滤法的过滤工艺特点及其选择进行了分析和探讨。 相似文献
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《Diamond and Related Materials》1999,8(7):1183-1192
Filtered cathodic vacuum arc (FCVA) deposition has been found to be a reliable technique for the production of high quality tetrahedral amorphous carbon films (ta-C). These coatings can be used as protective coatings for different applications ranging from cutting tools to human hip joint prosthesis. The FCVA technique is widely used in different laboratories around the world with somewhat different technical implementations. A serious disadvantage in the FCVA technique is the graphite particles that are emitted from the solid graphite cathode during the arc-discharge. A variety of different techniques exist to diminish their production and transport. However, some of the magnetic filtering designs that are used to reduce the macroparticle transport into the substrate do not work well with high melting point cathode materials such as graphite. Although the influence of graphite particles for the ta-C coating performance in some applications is controversial, many applications demand that the produced ta-C film is practically particle-free. This is especially important in corrosion resistance, electrical and optical applications. In this paper an introduction to different FCVA devices is presented. Different magnetic filtering designs together with control techniques for macroparticle generation have been reviewed and their advantages and disadvantages in the plasma transport and particle filtering efficiency have been discussed. 相似文献