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the softening-melting properties of sinter. Key words: magnetic separation tail slags; sintering; fluxes; metallurgical properties 钢渣是在钢铁生产过程中由造渣材料,冶炼反应物,侵蚀脱落的炉体和补炉材料,金属炉料带入的杂质和为调整钢渣性质而特意加入的造渣材料所组成的渣体,是钢......
铝合金熔体净化的研究 陆在平1,杨晓华1,张淑婷1,王磊1 (1.北京矿冶研究总院金属材料所,北京,100044) 摘要:论述了国内外铝合金熔体净化工艺和净化剂的研究现状,并简要介绍了我国铝合金净化的行业现状,指出现有工艺应用和研究的不足.提出了铝熔体提高净化效果的主要途径及发展方向为:在设备方面,应努力实现国产化,提高普及率,从而提高我国铝合金行业的整体净化水平;在铝熔体净化剂的发展方面,集净化,覆盖,精炼于一体的多功能绿色新型无污染熔剂及净化机理的研究是今后的努力方向. 关键词:铝合金; 熔体; 熔剂; 净化; aluminum alloy; melting body; fluxes; purification; [全文内容正在添加中] ......
simulations 表1 混合熔剂的离子数量 Table 1 Ions number of mixture fluxes 2.2 熔剂与Al2O3润湿性的分子动力学模拟结果 图3所示为等摩尔NaCl-KCl熔剂及添加NaF,Na3AlF6和AlF3后与Al2O3的润湿行为模拟结果,可以看出,等摩尔NaCl-KCl熔剂及添加NaF,Na3AlF6后均能与... of Al chips by salt fluxes 图3 等摩尔NaCl-KCl熔剂添加氟化物后与Al2O3的润湿行为 Fig. 3 Wetting behaviors between Al2O3 and equimolar NaCl-KCl fluxes 图4 熔融熔剂与Al2O3润湿后的高宽比 Fig. 4 Height-width ratio......
特殊组分对低氟保护渣凝固温度和结晶性能的影响 何生平1,王谦1,解丹1,王平1 (1.重庆大学材料科学与工程学院,重庆,400044) 摘要:氟含量过高的连铸保护渣不仅加剧伸入式水口的侵蚀,而且对连铸操作环境带来危害,为了降低保护渣中过高的氟含量,需要开发低氟或无氟保护渣.为避免保护渣中氟含量降低后性能指标的恶化,需要寻求氟化物的替代组分以协调保护渣各项冶金功能的正常发挥.为此,以高氟保护渣为参照点,设计了4组低氟连铸结晶器保护渣渣样.通过检测这些渣样的熔点,粘度,转折温度,结晶温度和结晶率,分析和比较实验数据发现,在不同碱度下,B2O3,Li2O,Cr2O3,TiO2均能部分替代渣中的......
, Dalian 116024, China) Abstract: The behavior of nine kinds of familiar fluxes including oxide, chloride, fluoride in the AC-TIG and variable polarity plasma arc(VPPA) welding of magnesium were studied under the condition of different welding currents and arc stiffness. The results show that in the magnesium AC-TIG welding, the fluxes as TiO2, Cr2O3, AlF3, NiCl2, CdCl2, ZnCl2, MgCl2 all increase......
salt synthesis method with the eutectic mixtures of KNO3-NaNO3 or KCl-NaCl as the fluxes. The as-prepared samples were investigated by means of X-ray powder diffraction (XRD), scanning electron.... Furthermore, different special morphologies of products were obtained in terms of different fluxes. In the fluorescence spectra, not only did the products present common excitation band at 254 nm, which......
salt synthesis method with the eutectic mixtures of KNO3-NaNO3 or KCl-NaCl as the fluxes. The as-prepared samples were investigated by means of X-ray powder diffraction (XRD), scanning electron.... Furthermore, different special morphologies of products were obtained in terms of different fluxes. In the fluorescence spectra, not only did the products present common excitation band at 254 nm, which......
thermal plasma reactor. Red mud was properly mixed with fluxes and graphite (fixed carbon, 99%) as a reductant as per stoichiometric requirement. The effect of various process parameters like a reductant, fluxes and smelting time on iron recovery was studied and optimized. An optimum condition for the maximum recovery of iron was obtained. A new thermal plasma process applicable to direct iron making......
210009,China摘 要:A novel 1064 nm laser stealth absorbent of Sm2O2S was prepared by flux method.The effects of different calcining temperatures and fluxes... temperature increasing.Compared with other samarium compounds,the reflectivity at 1064 nm of Sm2O2S was the lowest.Different fluxes had great impact on the phase composition,particle morphology......