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:A 文章编号:1672-7207(2018)06-1325-08 Influence of operation parameters on thermal characteristics of roasting shaft furnace for direct extracting vanadium GAO..., China) Abstract: Based on the local thermodynamic non-equilibrium model, the three-dimensional stable-state gas-solid heat transfer model of roasting shaft furnace for compact extracting vanadium......
and Bioengineering, Central South University, Changsha 410083, China) Abstract: The effects of adding ratio of boron-containing magnetite on Brazilian hematite green balls quality, preheating and roasting behaviors and metallurgical properties of product pellets were studied. The results show that the drop strength and thermal shock temperature of green balls increase, and the preheating and roasting......
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黄梅褐铁矿悬浮闪速磁化焙烧试验研究张汉泉1,余永富1,彭泽友2,陈雯2(1.湖北省武汉市武汉理工大学资源与环境工程学院2.长沙矿冶研究院,湖南长沙 410012)摘 要:以湖北黄梅褐铁矿为主要原料,研究焙烧气氛,温度和固气比等操作条件对褐铁矿焙烧指标的影响.研究结果表明:在一氧化碳含量(体积分数)3.50%左右,反应炉温度800~950℃,固气比0.5~0.8kg/m3条件下,通过闪速磁化焙烧得到的焙烧矿,品位在33%左右,可选性良好,采用简单的选矿流程,可得到较好的选矿指标,铁精矿品位达到60.67%,回收率......
提高含砷金精矿二段焙烧-氰化工艺金浸出率的试验研究薛光1,王永新2,薛元昕3(1.山东省烟台市人民武装警察部队黄金第七支队2.河北怀来宏达矿业有限公司3.烟台职业学院)摘 要:在试验研究基础上,提出了一种提高含砷金精矿二段焙烧-氰化浸出工艺金浸出率方法.试验结果表明,含砷金精矿经一段焙烧(450~500℃)除砷后,加入一定量的添加剂SR,再进行二段焙烧(630~650℃),然后经稀硫酸除铜后进行氰化浸出,可使金的氰化浸出率提高4.65%.该方法可获得较好的经济效益和社会效益.关键词:含砷金精矿； ......
treatment of COPR and tannery sludge by roasting process at low temperature LI Xiao-bin, QI Tian-gui, ZHOU Qiu-sheng, LI Bin, PENG Zhi-hong, LIU Gui-hua, XU Wen-bin (School of Metallurgical Science... monoxide and alkanes released from tannery sludge with the roasting temperature above 400 ℃; roasting temperature, retention time and mass ratio (pm) of COPR to tannery sludge play a significant role......
;Chemical composition of roasting cyanide tailings (mass fraction,%) 图1 焙烧氰化尾渣的XRD谱 Fig. 1 XRD pattern of roasting cyanide tailings 图2 焙烧氰化尾渣的粒度组成分析 Fig. 2 Particle size distribution analysis of roasting cyanide tailings 表2 焦粉的干燥基工业分析结果 Table 2 Drying proximate quality analysis of coke powders (mass fraction,%) 1.2 磁化焙烧条件实验 焙烧氰化尾渣的磁化焙烧于CD-1400X型马弗炉中完成,将30 g......
高温焙烧-磁选联合处理包钢含锌粉尘的研究王春龙1,张建良1,刘征建1,胡正文1,林祥海1,苏步新1(1.北京市北京科技大学 冶金与生态工程学院)摘 要:对转底炉处理含锌粉尘进行了实验室研究,通过设计正交试验考察了焙烧温度,焙烧时间及配煤量对含锌粉尘脱锌率,金属化率,磁选精矿产率以及铁回收率的影响.试验结果表明最佳工艺参数为:焙烧温度1 350℃,焙烧时间25min,配煤量6%.在此条件下的脱锌率和金属化率分别高达99.29%和99.68%,精矿产率为46.57%,铁回收率为95.46%.对经过最优方案焙烧并磁选......
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