X射线荧光光谱法定量测定湿法磷酸

湿法磷酸样品经稀盐酸分解后,在X射线荧光光谱仪上采用液体样品杯直接测定其P2O5、Fe2O3、Al2O3、SO3含量。方法简便快速,测量线性范围宽,对稀磷酸和浓磷酸均能同时测定,测定结果与化学分析测定结果基本一致。     

X射线荧光光谱仪及其分析技术的发展

按照获得和分辨特征X射线荧光光谱的方式,X射线荧光光谱仪可以分为波长色散X射线荧光光谱仪（WDXRF）和能量色散X射线荧光光谱仪（EDXRF）两大类。依照这一分类,论述了X射线荧光光谱仪在设备装置和配套方法方面的新状况。X射线荧光光谱仪整机现在向着小型化、智能化、多功能方面发展,仪器各部件也随着研究的深入而得到了更进一步地改进,在这一基础上,仪器可分析元素的含量范围得到了拓展,方法也得到了丰富。目前,X荧光光谱仪开发了微区面分布的元素成像分析方法、高级次谱线分析方法、薄膜分析方法等新的方法,对这些新方法作以介绍,同时也对基本参数法（FP法）的新近发展作了说明。     

X射线荧光光谱法在生料检测中的应用

X射线荧光光谱仪分析具有制样简单、分析速度快、分析含量范围宽、重现性好、准确度高等优点,近年来,随着X射线荧光光谱分析技术的不断推广,利用X射线荧光光谱仪分析检测已成为水泥行业质量控制的主要手段.     

波长色散X射线荧光光谱法测定水样中的微量钼

建立了采用波长色散X射线荧光光谱仪测定水样中的微量钼的方法。测定结果表明测量单个样品仅需30 s,检出限为1.6μg/g,相对标准偏差为1.81%,加标回收率为97%~102.9%。方法快速、准确、环保,不受水样pH和共存离子的明显影响。     

利用X射线荧光光谱仪测定铬矿石中的Cr、Fe、Si、Al、Ca、Mg的含量

采用合适的溶剂,将铬矿石粉末样品熔融成适合X射线荧光光谱仪测量的玻璃片,消除样品的矿物效应和颗粒效应。选取标准样品,建立标准曲线,同时对元素间干扰效应进行校正,使用X射线荧光光谱仪对铬矿石中的Cr、Fe、Si、Al、Ca、Mg等待测元素进行测定。分析结果与标准值相吻合,分析方法具有快速、准确、环保等优点。     

腐植酸钠复合吸附剂的制备及其脱硫性能

采用浸渍法,制得腐植酸钠／氧化铝复合脱硫剂,研究其负载氨水前后的脱硫性能。利用傅里叶红外变换光谱仪、扫描电镜、X射线能谱仪、X射线衍射仪对吸附剂样品的表面成分和结构、晶相组成进行了分析。     

X射线荧光分析技术及相关标准介绍

1X射线荧光分析简介X射线荧光分析是以化学元素受到适当激发时放射出特征辐射的事实为依据的。根据荧光X射线的激发方式和分光方式的不同,相应的仪器被称为光谱仪和能谱仪。光谱仪采用X射线管激发,分光晶体分光,可对氟到铀之间的所有元素进行分析,仪器构造复杂,国内尚无法生产。能谱仪采用小功率X射线管、同位素源等激发,采用波高分析器分光,一般仅能对设定的10种左右的元素进行分析,国内已可进行批量生产,在水泥行业应用较广的有钙铁分析仪、硅铁铝钙四元素分析仪和硅铁铝钙镁硫钛钾钠多元素分析仪等。X射线荧光分析除具有一般的仪器分…     

X射线荧光光谱标准添加法测定磷矿、磷肥中Mn、Cu、Zn、Mo、Pb等微量元素

本文研究了X射线荧光光谱标准添加法 ,并成功地应用于磷矿、重过磷酸钙肥料中的Mn、Cu、Zn、Mo、Pb等微量元素的测定。解决了X射线荧光光谱标准比较法 ,对测定非金属磷矿和磷肥中的微量元素难以得到大量标准样品的问题。该方法测定过程简便、快速、测定结果准确。并且扩大了X射线荧光光谱仪的测定范围。将标准添加法用于测定磷肥生产中的原料和产品 ,为生产上了解和掌握原料、产品中的多种微量成份提供了检测依据。     

X射线荧光光谱法分析精对苯二甲酸装置钴、锰催化剂混合液中的钴和锰

采用X射线荧光光谱法测定精对苯二甲酸装置钴，锰催化剂混合液中的钴和锰，对X射线荧光光谱仪的校正过程进行了研究，对方法的准确度和重复性及基体不同时测试结果的变化情况进行了考察。     

进口含铬物料的固体废物属性鉴别研究

通过对一例进口含铬样品的研究,综合样品的外观及物理、化学等特性,并通过利用X射线荧光光谱仪进行元素分析和X射线衍射仪进行物相分析,确定样品里含有的主要物相为Fe(Cr,Al)_2O_4,并且其他元素组成含量也与铝铬铁矿相似,符合天然矿石的特性,由此判断样品为铝铬铁矿,不属于固体废物。     

陶瓷抛光污泥的烘干分级及其细粉作混凝土掺和料的研究

本文在介绍了已用于工业生产的陶瓷抛光污泥立式烘干分级系统的基础上,将陶瓷抛光污泥细粉用于混凝土掺和料,研究了其对水泥胶砂强度、混凝土工作性能以及强度的影响。试验结果表明:陶瓷抛光污泥细粉可替代部分传统矿物掺和料应用于混凝土材料,既在一定程度上解决了混凝土矿物掺合料供应匮乏的问题,又实现了陶瓷抛光污泥的大规模处理和利用。     

铜及其合金化学抛光新工艺

研制出一种铜及其合金化学抛光新工艺。在传统的硫酸抛光液中加入一种淡绿色的粉末晶体。介绍了该抛光液的配制,研究了温度、基体材料对抛光效果的影响。结果表明,该工艺抛光速度快、腐蚀性代、无黄烟、环境污染小、成本低。     

抛光粉制备工艺的研究

本文针对抛光粉制备工艺的发展历史、制备方法和应用领域进行了综合述评。并对抛光粉制备工艺中彭响因素提出了自己的见解。     

高温烧结刚玉SG抛光微粉的研制

本文关键在于突破磨料具行业传统的刚玉微粉制造工艺，作者采用了将氧化铝粉高温烧结，利用沉降法制取ＳＧ微粉有关工艺方法，并最终取得预期的理想效果，研制的微粉具有单特度高，自锐性好，磨削抛光效率高，研磨抛光效果明显优于棕刚玉微粉，完全可以达到白刚玉微粉的性能。     

Technology for high-alumina mortar in the Belokamensk Refractory Plant

Materials proposed for the production of a high-alumina mortar are investigated, namely, waste of melting of secondary aluminum, polishing powder of normal electrocorundum, and sintered corundum. A technology for the production of high-alumina mortars of three compositions has been developed for these materials. An experimental industrial batch of mortar composed of ShKN chamotte, polishing powder of normal electrocorundum, and DN2 clay has been manufactured and tested with a positive result. Production of the mortar has been introduced in the Belokamensk Refractory Plant.Translated from Ogneupory, No. 1, pp. 27 – 28, January, 1996.     

Preparation of a coal surface for contact angle measurements

Coal specimens of different ranks were polished using silicon carbide abrasive papers (with a grit from #60 to #1200) and alumina powder of varying size (from 5 to 0.05 μm). The coal surface roughness and contamination (by alumina powder) were examined with both scanning electron microscopy and atomic force microscopy. The water advancing and receding contact angles were measured on such surfaces by varying the bubble size, using the captive-bubble technique. It was found that silicon carbide paper abraded all components of the coal surface, i.e. both organic and inorganic matter, to a similar depth. The roughness of the coal surface due to polishing with silicon carbide abrasive papers affected the contact angle hysteresis and the contact angle vs. bubble size relationship. Polishing of coal specimens with alumina powder reduced the microroughness of the coal surface but produced rough features at the macro level and caused mineral inclusions rising above the smooth organic matter. This phenomenon results from the heterogeneity of coal specimens consisting of minerals and macerals with different hardness values. The roughness at the macro level was easily distinguishable and had a significant impact on the measured contact angles when the coal surface was polished with coarse alumina powders, 5 and 1 μm in diameter. The effect of surface roughness on the advancing and receding water contact angles was significantly reduced (if not completely eliminated) when the coal surface was polished with a fibrous cloth (CHEMOMET) in the final step, after having been polished with 0.05 (0.06) μm alumina powder. Microscopic observation of the coal surfaces revealed that an appropriate ultrasonic treatment (8-10 min in an ultrasonic bath filled with water) and mechanical cleaning (polishing with a CHEMOMET cloth) of coal samples were required to remove the alumina particles left on the surface due to the previous polishing procedure. An improved methodology for coal surface preparation, prior to contact angle measurements, as proposed in this paper, includes polishing with a series of abrasive papers and 0.05 (0.06) μm alumina powder, polishing and cleaning with a fibrous cloth (e.g. CHEMOMET), and, finally, an extended cleaning in an ultrasonic bath filled with water.     

粉末涂料涂层的脱除处理

介绍了粉末涂料涂层的脱除处理方法(如机械打磨、高温烧烤和化学溶剂浸涂清除等),以及几种典型脱塑剂的配方及使用方法.     

Parameter optimization of ultrasonic vibration polishing K9 optical glass based on ultrasonic atomization

To further improve the surface finish and processing efficiency of optical components, ultrasonic vibration technology is frequently combined with conventional processing and the process parameters that play a critical role in this composite processing are identified. This research proposes an ultrasonic vibration polishing method based on ultrasonic atomization (UA-UVP). The polishing performance of K9 optical glass is increased by ultrasonic atomization (UA) assisted by polishing solvent for ultrasonic vibration polishing (UVP). Orthogonal experiments are used to study the effects and variation laws of the flow rate of ultrasonic atomization (Q), the gap distance between the polishing tool and workpiece (G), ultrasonic electro spindle speed (W), abrasive particle size (D) and ultrasonic amplitude (A) on surface roughness (SR) and material removal rate (MRR), respectively. When these two polishing characteristics are considered together, the optimization of polishing parameters becomes complicated. Therefore, the principal component analysis (PCA) and grey relational analysis (GRA) methods were employed to the optimal experimental combination as Q:18 ml/min, G: 5 μm, W: 4000 r/min, D: 0.5 μm, A: 8 μm. The experimental results showed that Ra and MRR were measured as 10.466 nm and 0.473*10^8 μm³/min, respectively. Compared with the best experimental combination of orthogonal experiments, the improvement rates of SR and MRR were 26.65% and 25.80%, respectively. Overall, the application of ultrasonic vibration technology contributes to enhancing the uniform distribution of polished abrasive particles and improving the polishing characteristics.     

磨制煤岩粉煤光片的新方法

对现有煤岩粉煤光片磨制方法进行了回顾，对磨制中存在的问题进行了分析，在此基础上提出粉煤光片磨制的新方法。新磨制方法与传统磨制方法相比磨制步骤简化，整体磨制时间缩短；适用性更广，对于不同硬度的煤，其磨制效果均较好。因此，新方法是一种快速、经济、效果理想的粉煤光片磨制方法。     

基于傅立叶谱与小波分析的抛光机磨头故障诊断研究

以陶瓷抛光机的关键工作部件-磨头及其驱动系统为研究对象，对其振动信号进行了采集并运用FFT频谱分析和小波分析的方法，准确地提取了磨头的故障特征频率，找出了磨头出现异常振动的原因，提出了控制措施。