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1.
从某石墨尾矿中回收绢云母的选矿试验   总被引:1,自引:0,他引:1  
某石墨尾矿中含有约6%的绢云母。为了给这些绢云母的综合回收提供依据,进行了相应选矿试验。试验根据原尾矿性质,首先采用沉砂口和溢流口直径均为2 mm的GSDF型50 mm水力旋流器,在0.2 MPa给矿压力和8%给矿浓度下脱除产率达53.41%的-19μm矿泥,使91.39%的绢云母富集到沉砂中,然后采用十二胺对绢云母含量提高到11.75%的沉砂进行1粗4精开路浮选,并在精选时用硫酸控制矿浆pH为3和添加适量水玻璃,最终获得了绢云母含量为85.11%、绢云母回收率为77.53%的绢云母精矿,该绢云母精矿满足橡胶填料要求。  相似文献   

2.
对浙江某萤石尾矿中锂的赋存状态开展详细的研究,并对锂的回收潜力进行评价。工艺矿物学研究表明,尾矿中的含锂矿物为铁锂云母、白云母和金云母,三类云母矿物中的平均锂含量分别为4.16%、0.47%和0.51%,其中62.82%分布于铁锂云母中,故要重点加强对铁锂云母的分选。但由于白云母、金云母与铁锂云母的浮游性能相似,在浮选过程中将一并进入到锂云母精矿,导致云母精矿Li2O品位偏低而无法得到合格的产品。但是可以采用强磁选法从云母精矿中分离出合格的铁锂云母精矿。也可以采用强磁选法处理给矿,将铁锂云母、褐铁矿和软锰矿分选到磁性产品中,然后用阳离子浮选法从磁性产品中浮选得到铁锂云母精矿。采用浮选—磁选法技术或和磁选—浮选法需通过选矿试验进一步确定。   相似文献   

3.
澳大利亚某进口锂辉石矿含有较多的矿泥,对浮选作业产生不利影响,试验采用水力沉降法、浮选法等不同方法对锂辉石矿进行预先脱泥,考察了不同方法的脱泥效果及对后续锂辉石浮选的影响。研究发现以十二烷基硫酸钠作为浮选药剂对锂辉石矿进行浮选脱泥取得了最佳的脱泥效果,脱除的矿泥量大、含锂品位低、矿泥中锂的损失小,脱泥后再浮选锂辉石,获得的锂辉石粗精矿品位有了很大程度的提高。预先脱泥后的锂辉石矿经过一次粗选两次精选三次扫选的浮选流程,可获得良好的选矿指标。闭路试验表明,该进口锂辉石矿原矿Li_2O含量为1.42%,经预先脱泥—浮选锂辉石选别流程处理后,获得的锂辉石精矿Li_2O品位为5.83%,Li_2O回收率为78.54%。  相似文献   

4.
某大理岩型石墨矿,其大鳞片石墨含量较高,可选性较好。为了高效利用该石墨矿资源,进行了石墨矿鳞片保护浮选工艺研究。实验结果表明,在粗磨磨矿细度为-0.075mm占45%的条件下,粗精矿四次再磨四次精选后筛分分级出+0.15mm精矿,-0.15mm产品经4次再磨5次精选后获得-0.15mm精矿。+0.15mm精矿产品固定碳含量91.39%,回收率27.37%,-0.15mm精矿产品固定碳含量94.06%,回收率63.57%,合计精矿总定碳回收率90.94%,该工艺流程可以有效保护大鳞片石墨。  相似文献   

5.
黑龙江萝北鳞片石墨浮选新工艺研究   总被引:3,自引:1,他引:2  
黑龙江萝北地区某细鳞片晶质石墨矿固定碳含量为13.27%,采用浮选工艺进行选别。结合工艺矿物学研究和粗选条件试验,采用阶段磨矿-阶段选别、分质分流流程,筛分获得+0.15mm大粒级高碳鳞片石墨精矿和-0.15mm粒级鳞片石墨,-0.15mm细粒级石墨经过再磨精选获得高碳石墨精矿。闭路试验获得的石墨精矿回收率为91.30%,固定碳含量为96.11%,石墨精矿中+0.15mm粒级石墨产率为16.08%。  相似文献   

6.
旋流-静态微泡浮选柱分选某金矿泥的半工业试验   总被引:1,自引:0,他引:1  
介绍了山东某金矿的原矿性质及洗矿矿泥中金的分布特点,对金在微细粒级明显富集的矿泥,应用旋流-静态微泡浮选柱组成的1粗1精闭路浮选半工业试验系统进行了矿泥分选研究,并在最佳工艺技术参数条件下进行了系统的稳定性研究,对平均金品位为2.21 g/t的矿泥,获得了平均金品位为98.98 g/t、回收率为88.15%的金精矿。试验指标明显优于用浮选机组成的分选系统的指标,表明旋流-静态微泡浮选柱对细粒及微细粒物料的分选具有显著的优越性。  相似文献   

7.
国外某石墨型钒矿中的钒富集在石墨尾矿中,含钒矿物为钒云母,为高效回收其中的钒,采用浮选工艺进行了选矿试验。结果表明,采用1粗1扫1精闭路浮选流程处理试样,获得的钒精矿V2O5品位为1.74%、钒回收率为81.81%的钒云母精矿,闭路试验的富集比为2.58。  相似文献   

8.
甘肃某石墨矿属于鳞片石墨矿石,原矿固定碳含量较低,为4.48%,石墨鳞片较小。对该地区细鳞片石墨矿进行选矿试验研究,得出适宜的粗选条件为:粗磨磨矿细度为-0.074mm占63.52%、浮选浓度为27%、煤油用量为640g/t、2#油用量为110g/t、生石灰用量为2500g/t(即矿浆pH=9),粗精矿采用五次再磨六次精选流程进行开路试验、闭路试验,最终获得石墨精矿固定碳含量为95.70%,回收率为71.78%的选别指标,为该地区石墨资源的开发利用提供了技术依据。  相似文献   

9.
针对江西某低品位锂辉石矿矿泥含量高、现场浮选指标差等问题,进行了选矿试验研究。结果表明:将450 g/t碳酸钠+300 g/t氢氧化钠加入磨机中,矿石磨细至-0.076 mm占70%,脱去-0.15 mm粒级矿泥,以碳酸钠、氢氧化钠、氯化钙作联合调整剂、改性油酸作捕收剂,经1粗3精1扫闭路浮选,可获得Li_2O品位为4.45%、回收率为74.17%的锂辉石精矿,精矿Li_2O品位较现场工艺提高了0.39个百分点,回收率提高了12.59个百分点;锂辉石浮选尾矿经弱磁选—高梯度强磁选除铁,获得了Fe_2O_3含量为0.18%的长石精矿。  相似文献   

10.
凝灰岩型氧化铜矿浮选过程中,矿泥对浮选过程产生严重影响。采用SEM-EDS对矿泥、浮选精矿和尾矿的形貌及矿物组成进行表征,测量矿泥比表面积,药剂吸附量,研究矿泥对捕收剂的吸附特性。结果表明:凝灰岩矿泥表面为鳞片、薄片状,比表面积大,对捕收剂吸附活性高。提高矿浆温度,取消起泡剂,氧化铜矿浮选效果得到改善。一粗两精三扫、中矿顺序返回的闭路流程能够获得品位21.40%、回收率86.25%的铜精矿。  相似文献   

11.
<正>Rare earth luminescent material is one of the most important application sectors of rare earths.China enjoys the exceptional advantage to develop rare earth luminescent material for its abundant rare earth resources.After several decades'endeavor,China's rare earth luminescent material industry,headed by rare earth phosphor for lamp and LED and high efficient rare earth energy-saving light source,has been gradually developed into a scale industry.China has become a major production base of rare earth phosphor for lamps and rare earth  相似文献   

12.
正June 1~10,2014Rare earth market remained weak.Quoted price of rare earth products was similar to that in May.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,polishing powder and ceramic industries remained inactive.Demand from downstream industry was soft.Consumers purchased on their needs.Suppliers had strong intention to sell.Prices of rare earth products  相似文献   

13.
正1.Status of rare earth polishing powder Rare earth polishing powder with high content of cerium oxide began to replace iron oxide for glass polishing and became one of the key materials in glass polishing process since 1940.Compared with traditional iron oxide,rare earth polishing powder has many advantages,such as fast polishing rate,high polishing quality and long service life.It can achieve good surface quality and improve operation conditions.For example,in lens polishing,the polishing work that cerium  相似文献   

14.
<正>Chinese rare earth-related listed companies have published their 2013 annual reports.It can be understood from their reports that production and operation activities of Chinese rare earth-related companies were still heavily affected by macro economy and industrial policies.They basically followed the steps of national economy.In 2013,world economy recovered slowly but the economy  相似文献   

15.
正Pyrometallurgy Laboratory of Baotou Research Institute of Rare Earths had independently developed a new preparation technology of rare earth alloy for NdFeB.The alloy can remarkably enhance the coercivity of NdFeB magnet but also evidently reduce the production cost of the magnet.The new master alloy was prepared in the kA pilot-scale electrolytic cell by the independent technology.The rare earth master alloy can be used as the raw material for NdFeB.Compared  相似文献   

16.
文奇 《中州煤炭》2018,(6):175-178
高效节能矿用防爆对旋主要通风机的叶片是主要通风机运行的关键部件,叶片在运行时不断受到气流的作用力,从而使叶片产生振动,当叶片振动的频率与叶片的固有频率接近时,容易产生共振从而导致叶片的断裂。一旦叶片断裂时,对主要通风机的安全运行产生致命的影响,从而导致矿山、化工等企业发生重大事故,将会产生不可估量的损失。基于有限元分析软件ANSYS,对高效节能矿用防爆轴流对旋主要通风机叶片进行模态分析及产生对应的六阶模态频率,对主要通风机叶片的运行频率、固有频率及产生的共振问题进行了原理分析,并且解决了叶片频率共振的问题,从而为主要通风机叶片结构设计提供理论依据,并对主要通风机叶片的安全运行提供保障。  相似文献   

17.
正September 1-10,2014 Affected by the National Day holiday,rare earth transaction was stagnant and the market showed a weak steady state.As there was no good news for downstream market,some products with flat demand would likely rally slightly for some time to  相似文献   

18.
<正>Market status and future trend of NiMH battery1.Global market of small NiMH battery Global market size of small NiMH batteries declined year on year since 2011.The trend will continue to 2018,at the rate of 5%to 10%annually.Demand for small NiMH batteries will be stable gradually.Many electrical apparatuses are powered by the built-in lithium battery today,which is the main reason for the shrunk market of small NiMH batteries.But,for some products,small NiMH  相似文献   

19.
<正>Developing ecological lighting source The world is facing the big problem of energy shortage today and the contradiction between economy development and environmental protection is worsened.Therefore,people are more likely to choose an ecological light source that is more energy efficient and environmental friendly.The choice provides great opportunity for the development of rare earth optical material industry in China.The concept of green lighting positions rare earth luminescent material as a leading player in illumination market.The light source of both rare earth luminescent lamp and LED lamp is ecological and energy saving.This is why  相似文献   

20.
正Galaxy Magnet announced its financial results for the first half of 2014 on August 14.For the first six months ended on 30 June 2014,Galaxy Magnet achieved operation income of RMB 182.3 million,up8.40% over the same period of 2013,and the net profit attributable to the shareholders of the listed company of 34.02 million yuan,increasing 35.49% over the same period of last year.Stable performance increase was led by development of new customers and application market of magnets.  相似文献   

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