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冶金部推广使用金属橡胶磁性衬板冶金部生产协调司目前在本钢歪头山铁矿召开了金属橡胶磁性衬板推广会。金属橡胶磁性衬板是球磨机的换代产品。目前,我国球磨机大多使用锰钢衬板,其寿命只有6~8个月。因此,消耗大、成本高,而且更换困难。金属橡胶磁性衬板的寿命可延... 相似文献
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磁性衬板在黄金选矿厂的应用 总被引:2,自引:0,他引:2
磁性衬板在黄金选矿厂的应用刘志亮(张家口金矿)1引言磁性衬板是一种新型材料,安装在磨机筒体内壁上,借助磁力在衬板工作面吸附一层磁性物质,形成保护层,减少衬板工作面与运动介质和物料的直接接触,从而减轻磨损、延长衬板使用寿命。目前有橡胶磁性衬板和金属磁性... 相似文献
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磁性衬板是一种新型的球磨机衬板,应用于含磁性矿的矿石磨矿时,由于在衬板工作面能吸附一层磁性物质,可形成保护膜,减少衬板工作面与运动的介质和物料直接接触,从而可达到延长衬板寿命的目的。本文主要就磁性衬板的研究概况、特性及应用情况进行了阐述。 相似文献
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金属磁性衬板的发展与应用研究 总被引:1,自引:0,他引:1
阐述了磁性衬板的发展,并介绍了磁性衬板的结构和工作机理。通过对国内磁性衬板应用厂家的考察、调研后,分析判断在 3600×6000mm球磨机上应用的可行性。 相似文献
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总结了磁性衬板在梅山选矿厂的试验情况,对试验中的问题进行了分析和改进。并对磁性衬板与高锰钢衬板性能、特点和使用效果进行了比较,最后对磁性衬板在梅山选矿厂的应用前景进行了探讨。 相似文献
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介绍了一种以"预压磁取向"法为基础制造塑料-锶铁氧体复合材料密封条(以下简称塑料磁条)的新工艺,并探索了工艺因素对制品磁性能的影响。本工艺具有产品质量好、操作简单、节能及经济效益显著的优点。 相似文献
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高岭土中的铁杂质严重影响高岭土产品品质,杂质中铁一般以磁铁矿、赤铁矿等弱磁性矿石为主.常规磁选机产生的场强不足,很难将高岭土中的弱磁性铁杂质分离出来.当采用磁场强度非常高的超导磁选机,能很好去除矿石中的各种弱磁性铁杂质,进而提高高岭土产品品质,提高企业的技术经济效益.试验研究表明,超导磁选高岭土中铁含量从1.04 %降至0.53 %,煅烧白度提高到85.6,可达到搪瓷工业TT-0级标准. 相似文献
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本文了三种生产磁鼓方法的工艺过程,并对其制件的组织、性能、废品情况进行了比较与讨论。 相似文献
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E. K. Yakubailik V. I. Kilin I. M. Ganzhenko M. V. Chizhik S. V. Kilin 《Steel in Translation》2014,44(2):113-116
Wet separation of the primary Siberian iron-ore concentrates processed at Abagursk enrichment facility (OAO Evrazruda) is studied in the laboratory. Nine samples of concentrates (?0.07 mm class) from magnetite ore and weakly oxidized ore are subjected to wet magnetic analysis in a field of 80 kA/m. The basic magnetic characteristics of the initial concentrates and the products obtained on separation are measured. The yield of magnetic product is greatest for magnetite ores: more than 68% (Abakan), as compared to 43–45% for weakly oxidized ore. Thus, the yield of magnetic product falls with decrease in magnetite content in the initial material. The following practical recommendations are offered: (1) it is expedient to enrich weakly oxidized ore after mixing with magnetite ore, so as to reduce the loss of iron with the tailings; (2) the magnetic systems of PBM 90/250 separators must be reconstructed, with the introduction of stronger magnets. 相似文献
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Gas chromatographic analysis of the products of reaction of diazomethane with tolbutamide and chlorpropamide indicates the formation of three compounds in both cases. As expected, N-methylation (at sulfonamide nitrogen) is the predominant reaction; minor amounts of O-methylated product are also observed. The third product in both cases is the N-methylsulfonamide formed by decomposition of the N-methylated sulfonylurea during gas chromatography. Electron impact and chemulfonylurea during gas chromatography. Electron impact and chemical ionization mass spectrometric analysis, as well as 1H nuclear magnetic resonance examination of samples collected from gas chromatography, confirm the structural assignments. Additionally, proton magnetic resonance analysis of the crude reaction products established that N-methylsulfonamides are not formed in the course of the diazomethane reaction and that the O-methylated derivatives are true products of the reaction. The use of a paramagnetic shift reagent allowed direct estimation of the ratios of N- to O-methylation, and the demonstration that these ratios are not vitiated during gas chromatographic analysis. 相似文献
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铁锰元素是长石矿物的主要杂质,致使长石灼烧产品出现斑点,降低产品等级.针对江西某钽铌尾矿中铁锰暗色矿物影响长石产品质量这一问题,进行除杂试验研究,研究表明,采用“高梯度磁选除杂-旋流器脱泥-螺旋溜槽回收”工艺得到粗粒长石产品,采用“分级溢流集中经旋流器脱泥浓缩-高梯度强磁选”工艺得到细粒长石产品,长石总回收率≥93 %,选矿尾矿总排放量仅8 %,实现了钽铌矿尾矿中长石资源综合回收利用. 相似文献