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1.
针对云南某硫化铅锌矿,方铅矿嵌布粒度细、黄铁矿含量高的特点,进行了工艺矿物学与浮选回收技术研究。采用铅硫混浮-混合粗精矿再磨-铅硫分选-锌硫分选选矿回收工艺,基于全流程主要条件试验确定最佳工艺技术条件。实验室全流程闭路试验获得了Pb品位65.52%,Pb回收率87.51%,含锌3.89%的铅精矿;锌1,锌2合计Zn品位54.74%,Zn回收率95.02%的锌精矿及Fe品位42.02%,Fe回收率78.26%硫精矿。目的矿物方铅矿、闪锌矿和黄铁矿均得到良好回收。  相似文献   

2.
某难选锌铁硫矿选矿试验研究   总被引:2,自引:2,他引:0  
对某难选锌铁硫矿石的性质进行了研究,通过反复条件实验,采用"先浮后磁,先硫后锌"工艺流程,选择了合理的药剂,取得较好的选矿指标.闭路试验可获得Zn品位43.73%、回收率86.73%、含S 32.03%的锌精矿,Fe品位65.89%、回收率44.84%的铁精矿和S品位45.59%、回收率37.79%的硫精矿.各有价矿物得到有效回收.  相似文献   

3.
曹洋  王润  段金刚  付亚峰  李闯  杨晓峰 《金属矿山》2021,50(10):100-107
黑龙江某锌铁矿石由于矿物组成复杂,且毒砂等含砷矿物含量较高而难以有效回收利用。针对该锌 铁矿的矿物组成及粒度嵌布特征,开展了优先浮选闪锌矿、浮选尾矿进行磁选回收磁铁矿的工艺流程试验。结果 表明:在磨矿细度为-0.074 mm 占 75% 条件下,以硫酸铜为活化剂、亚硫酸钠为抑制剂、硫氨酯为捕收剂,经过 1 粗 3 精 2 扫的闭路浮选工艺流程,可以获得 Zn 品位 47.45%、Zn 回收率 94.31%、As 品位 0.13% 的锌精矿,同时获得 Fe 品 位 31.84% 的锌浮选尾矿;将锌浮选尾矿在磁选粗选磁场强度 79.6 kA/m 条件下经过 1 次磁选粗选,粗精矿再磨至细 度-0.038 mm 占 85%,经磁场强度条件下 55.7 kA/m 二次磁选,可以获得 Fe 品位 67.54%、Fe 回收率 50.81%、As 品位 0.06%、S 品位 0.28% 的铁精矿。试验结果可为复杂难选锌铁矿石的有效回收利用提供依据。  相似文献   

4.
为提高吉林某铜锌硫化矿选矿指标,进行了选矿试验研究。采用"铜锌优先浮选-铜粗精矿再磨-铜中矿部分集中返回"的工艺流程,配合使用高效铜捕收剂YK-0和强力锌组合抑制剂ZnSO_4+YK-5,获得了Cu品位28.65%、回收率93.49%的铜精矿和Zn品位48.82%、回收率84.60%的锌精矿。根据试验结果对现场流程进行改造,与改造前相比,铜精矿Cu品位提高6.59个百分点,含Zn降低5.64个百分点;锌精矿Zn回收率提高15.19个百分点,经济效益显著。  相似文献   

5.
江西尖峰坡难选锡石硫化矿选矿工艺的研究   总被引:1,自引:0,他引:1       下载免费PDF全文
江西尖峰坡锡石多金属硫化矿具有锡石结晶粒度细及硫化矿可浮性差异小等特点,采用"优先脱硫浮锌-浮选尾矿重选选锡"的工艺流程进行选别,在原矿品位Zn 0.87%,Sn 0.70%的情况下,获得了锌品位44.56%、回收率69.10%的锌精矿,锡品位54.38%、回收率53.03%的高品位锡精矿及锡品位6.54%、回收率1.25%的低品位锡精矿,锡总回收率为54.28%,锌和锡均得到有效回收.  相似文献   

6.
唐义胜 《矿冶工程》2020,40(3):68-71
对某地复杂铅锌锡多金属矿进行了选矿工艺试验研究。采用磁选-优先浮铅-锌硫混浮-锌硫分离-重选收锡联合工艺流程,获得了铅精矿Pb品位47.23%、Sb品位12.98%、Ag品位1345.12 g/t,Pb回收率87.74%、Sb回收率89.53%、Ag回收率76.57%; 锌精矿Zn品位47.73%、Zn回收率77.20%; 锡精矿Sn品位56.27%,Sn回收率62.01%。该工艺可为研究同类型矿提供参考依据。  相似文献   

7.
针对某高炭高硫铅锌矿石,采用优先浮铅—锌硫混浮—锌硫分离的浮选工艺和新型的捕收剂OZ,通过闭路试验,获得了铅精矿Pb品位50.43%,Pb回收率83.65%;锌精矿Zn品位51.76%,Zn回收率90.22%;硫精矿S品位47.82%,S回收率66.49%的试验结果。  相似文献   

8.
某高泥低品位铅锌银硫矿含Pb0.78%、Zn1.36%、Ag9.92g/t、S2.51%。在磨矿细度-0.074mm 65%条件下,采用铅优先浮选—锌硫混浮—锌硫分离选矿工艺流程处理该矿物,可分别获得铅品位63.62%、回收率88.41%的铅精矿,锌品位55.24%、回收率88.14%的锌精矿,硫品位39.78%、回收率61.15%的硫精矿,银主要富集于铅精矿中,银的回收率为53.98%。  相似文献   

9.
酒钢镜铁山V矿体铁矿石采出TFe品位23%左右,多年来受选矿工艺技术水平及经济条件制约,一直未得到合理利用。现场采用单一强磁预选工艺,入选矿石TFe品位得到较为明显的提高,但尾矿TFe品位偏高,铁损失较大。为进一步提高预选效果,对该矿进行智能预选与强磁预选联合抛废试验研究。结果表明:①对于TFe品位为23.92%、粒度范围为15~45 mm粒级样,适宜的抛废率为16.31%,此时TFe品位为26.53%、回收率92.83%。抛废率为13.20%和20.39%的稳定试验结果与条件试验结果基本一致,表明智能预选试验数据可靠。②A1粒级样(30~45 mm)粗选适宜的筒体表面线速度为0.70 m/s,此时精矿TFe品位为29.03%、回收率70.91%;A2粒级样(15~30 mm)粗选适宜的筒体表面线速度为0.85 m/s,此时精矿TFe品位为30.03%、回收率78.09%。③粒度为30~45 mm的智能预选精矿通过强磁干式预选,可抛除作业产率为15.04%、TFe作业回收率为8.29%的尾矿,精矿TFe品位提升了2.04个百分点;粒度为15~30 mm的智能预选精矿通过强磁干式预选,可抛除作业产率为10.97%、TFe作业回收率为5.79%的尾矿,精矿TFe品位提升了1.54个百分点。粒度为30~45 mm的智能预选精矿的强磁干式预选效果更好。④采用智能预选—强磁干式预选(1粗1扫)工艺进行联合抛废处理15~45 mm粒级矿样,可抛除总产率为24.12%、TFe回收率为11.95%的尾矿,精矿TFe品位提升了3.85个百分点,预选效果较好。  相似文献   

10.
铜锌硫化矿粗磨后混合浮选具有回收率高和成本低的优势,但混合精矿面临铜锌硫分离的难题。云南思茅地区的铜锌硫混合粗精矿,其细度为-74μm含量75%;Cu,2.56%;Zn,5.23%;S,37.21%。采用混合粗精矿再磨-分步降硫-铜锌分离工艺,研究了再磨细度、药剂用量等因素对铜、锌矿物和硫矿物分离效果的影响。当粗精矿再磨细度为-38μm含量90%时,闭路试验获得品位和回收率均较高的铜精矿、锌精矿和硫精矿产品,铜精矿含Cu 20.42%,Cu回收率82.47%;锌精矿含Zn 45.07%,Zn回收率83.88%;硫精矿含S 38.40%,S回收率81.78%。说明对混合精矿先分步脱硫,再铜锌分离可实现各矿物较彻底的分离。本研究可为混合粗精矿的高效浮选分离提供一定的参考。  相似文献   

11.
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   

12.
<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   

13.
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   

14.
<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   

15.
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   

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>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   

18.
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   

19.
<正>China has rich rare earth resources.Output of rare earth and steel in China ranks the top first in the world.However,there is still certain distance between the steel produced in China and developed countries from the point of varieties and quality.China still has to import some types of steel.Improving the quality should be emphasiZed in future development of steel industry in China.Rare earth can be used to upgrade traditional steel  相似文献   

20.
正November 21~30,2014Due to weak demand from downstream industries,transactions of rare earth in Chinese domestic market were inactive.It was difficult to sell any rare earth products except for dysprosium oxide and terbium oxide.Suppliers lost confidence in recent market.Demand for rare earth products was soft.Consumers continued to take a wait-and-see attitude.Rare earth export market remained slow.  相似文献   

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