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碎产品微裂纹的影响,测定不同粉碎方式在不同目标粒度的情况下矿石的Bond球磨功指数,研究不同粉碎方式对粉碎产品Bond球磨功指数的影响.研究结果表明:高压辊磨产品较传统破碎产品微裂纹更多,在0.9~3.2 mm粒级时,高压辊磨产品表面的微裂纹十分明显；高压辊磨产品较传统破碎产品的Bond球磨功指数低,随着目标粒度的减小,高压辊磨产品较传统破碎产品的Bond球磨功指数降低的幅度在逐渐减小；与传统碎磨产品相比,高压辊磨产品在磨矿细度(小于0.074 mm含量)小于60%时的节能效果更明显. 关键词:高压辊磨机；钼铜矿；微裂纹；Bond球磨功指数 中图分类号:TD 952 文献标志码:A 文章编......
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in Table 1, which show that the calculated structural parameters are in agreement with the experimental data. 3.2 Chemical bonding The Mulliken bond population is useful for evaluating the bonding... of [YO/LaO] block and the [ZnAs] block is ionic character; and the bond population shows the intra-block of Y-O/ La-O and Zn-As are covalent character. The chemical bondings in YZnAsO and LaZnAsO......
; Chemical composition of ZSnSb11Cu6 powders (mass fraction, %) 20钢熔点约为1500 ℃,而锡基巴氏合金固相点温度为240 ℃,液相点温度为370 ℃,因此在成形过程中所需激光能量较低.在熔覆第一层时,因熔覆层直接与20钢基体接触,熔覆工艺参数直接影响两种合金间的结合强度.且熔覆第一层时基体温度较低散热较快,熔池移动过后能够迅速凝固.在熔...]. Journal of Adhesion Science & Technology, 2017, 31(21): 2312-2322. [4] DIOUF P, JAVES A. Investigation of bond strength in centrifugal lining of Babbitt on cast iron[J]. Metallurgical......
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Chemical States of Lanthanum in Carbonized La2O3-Mo Thermionic Cathode Materials 周美玲1,张久兴1,王金淑1,左铁镛1,聂祚仁1,王亦曼1 (1.The Key Laboratory of Advanced Functional Materials, Ministry of Education China, School of Materials Science and Engineering, Beijing Polytechnic University, Beijing 100022, China) Abstract:The chemical reaction between lanthanum oxide and molybdenum carbide was studied......
资源与土木工程学院,辽宁 沈阳,110004) 摘要:对弓长岭磁铁矿石进行高压辊磨和颚式破碎,分析不同粉碎工艺对粉碎产品粒度特性的影响,测定不同粉碎方式在不同目标粒度下的 Bond 球磨功指数,研究颚式破碎和不同的高压辊磨机辊面压力对Bond球磨功指数的影响.研究结果表明:高压辊磨产品比颚式破碎产品细粒级质量分数高,高压辊磨辊面压力4.5 N/mm2和5.5 N/mm2产品的粒度分布更加均匀；在磨矿细度小于0.074 mm的质量分数为65%,高压辊磨产品在辊面压力为2.5,3.5,4.5,5.5和6.5 N/mm2下的Bond球磨功指数比颚式破碎产品分别降低11.36%,21.38%,15.62%,22.59%和27.49%,在磨矿细度小于0.074 mm的质量分数为40%,高压辊磨产品在辊面压力为2.5,3.5,4.5,5.5和6.5 N/mm2下的Bond球磨功指数比颚式破碎产品分别......
Rapid chemical vapor infiltration of C/C composites ZHANG Ming-yu(张明瑜)1, 2, WANG Li-ping(王丽平)3, HUANG Qi-zhong(黄启忠)2, CHAI Li-yuan(柴立元)1 1. School of Metallurgical Science... as diluent, C/C composites were fast fabricated by using a multi-physics field chemical vapor infiltration (MFCVI) process in a self-made furnace. A set of orthogonal experiments were carried out......
Preparation of diamond/Cu microchannel heat sink by chemical vapor depositionLIU Xue-zhang(刘学璋)1, LUO Hao(罗浩)2, SU Xu(苏栩)2, YU Zhi-ming(余志明)2(1. School of Materials and Mechanical Engineering... was tightly deposited by hot-filament chemical vapor deposition (HF-CVD). The nucleation and growth of diamond were investigated with micro-Raman spectroscope and field emission scanning electron microscope......
A Quantum Chemical Study on Hexanuclear Cluster Halides of Rare Earth Elements and Their Interstitial Compounds林梦海,张乾二摘 要:<正> The electronic... clusterskeleton bond in the system to reach structural stability.If embedded atom belongs to transition metal,bondingorbitals composed of that of interstitial atom and rare earth cluster take the place......
