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随着社会的不断发展,工业化行业得到了很好的发展,但是与此同时伴随着工业化污水的排放已经严重影响到了人类的生活,冶金行业的废水排放量同样占据了总排放量的一部分。目前在冶金废水的深度处理过程中已经引入了反渗透膜技术,这种技术可以更加有效率的处理冶金过程中排出的废水,反渗透膜技术是采用了错流过滤技术,从而进行自动排污处理,因此可以对冶金废水进行更深程度的处理。本文就对反渗透膜技术在冶金废水深度处理中的应用做出分析,供参考。 相似文献
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以Al2(SO4)3和CO(NH2)2为原料,通过均匀沉淀法制备出前驱物Al(OH)3,并煅烧得到超细α-Al2O3粉体。研究CO(NH2)2和Al2(SO4)3的摩尔比、Al2(SO4)3起始摩尔浓度、反应温度、反应时间等对前驱物制备的影响。利用X射线衍射仪、扫描电镜、热重/差示扫描法(DTA/TGA)等多种现代分析检测技术对粉体的性能进行了表征。结果表明:在CO(NH2)2和Al2(SO4)3的摩尔比为10:1、Al2(SO4)3起始浓度为0.05mol/L、反应温度为90℃、反应时间为60min的条件下,能得到分散性能良好、粒径为2μm左右且粒度分布均匀的球形超细α-Al2O3粉体。 相似文献
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锌冶炼技术的整体水平是一个国家金属冶炼能力的重要标志。文章重点对锌冶炼技术的发展现状与动向进行了分析,以期能够提升我国锌冶炼技术水平,为工业现代化建设做出积极的贡献。 相似文献
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Ultrafine alumina power was obtained by calcining the precursor at 1 200 ℃ for 2 h, which was prepared by homogeneous precipitation method using aluminium salts and urea as raw materials. The effects of anions on the morphology, particle size, surface area and configuration of the precursors were studied. The results show that the reactions of urea with aluminium nitrate and aluminium chloride result in agglomerates gels with bad filtering performance, the morphology is fibrillar. Aluminium sulphate-urea reactions result in the direct formation of amorphous powders with good filtering performance, of which morphology are regular spherical particles with larger granularity and smaller surface area. The reaction of mutual compound of aluminium sulphate and aluminium nitrate with molar ratio of 40:60 with urea can produce precursor with good filtering performance, spherical morphology, and uniform granularity distribution in the particle size range of 2-3 μm. 相似文献