Study on a Sink and Float Test of a Lead-Zinc Ore from Yunnan

2014 ◽  
Vol 1073-1076 ◽  
pp. 2149-2152
Author(s):  
Wen Juan Zhao ◽  
Sheng Jian
Keyword(s):  
Specific Gravity ◽  
Light Product ◽  
Lead Recovery ◽  
Dense Media ◽  
Lead Zinc ◽  
Dense Media Separation

The paper analyses problems of a lead-zinc ore from Yunnan with a sink and float test. In the paper, we explored the possibility of pre-discarding about the ore by dense-media process. Dense liquids with the specific gravity of 2.6, 2.7 and 2.8 were used in the test, respectively. -12mm crudes were taken into the test. Finally, it revealed that pre-discarding by dense-media separation can be used in the ore. 2.7 was taken as the best specific gravity of separation. 12~1mm was used as the optimal fraction of pre-discarding by dense-media separation. Pre-discarding rate was 45.53%. The light product with a lead grade of 0.29% and a lead recovery of 4.29% was pre-discarded in which the grade and recovery of zinc were 0.22 and 5.84, respectively.

Experimental Research on Rough Flotation of Lead in Bainiuchang Lead-Zinc Mines

2014 ◽  
Vol 926-930 ◽  
pp. 108-110
Author(s):  
Qi Fu Zhang ◽  
Zhuo Yue Lan ◽  
Xing Ke Shang
Keyword(s):  
Experimental Research ◽  
Recovery Rate ◽  
Zinc Sulfate ◽  
Zinc Sulphide ◽  
Sodium Hexametaphosphate ◽  
Sulphide Ore ◽  
Lead Recovery ◽  
Lead Zinc ◽  
Flotation Performance ◽  
Plant Practice

Containing Pb (1.09% ) and Zn (1.97%),the lead-zinc sulphide ore of Bainiuchang mine is a refractory resource in Yunnan Mengzi. The flotation performance of lead is ineffective in plant practice. This research is carried out to enhance the rough flotation performance of lead. With the dosage of lime and zinc sulfate as depressors, sodium hexametaphosphate as dispersant, and ethyl thio carbamate and MA as combined collector, the grinding fineness of 85% , a lead concentrate with lead grade of 17.68%, lead recovery rate of 75.59%, and zinc grade of 7.16% was obtained. The performance of rough flotation of lead is improved.

Dense-media separation as a more efficient pollen extraction method for use with organic sediment/deposit samples: comparison with the conventional method

Boreas ◽  
2008 ◽  
Vol 27 (1) ◽  
pp. 15-24 ◽  
Author(s):  
TAKESHI NAKAGAWA ◽  
ELISABETTA BRUGIAPAGLIA ◽  
GUNNAR DIGERFELDT ◽  
MAURICE REILLE ◽  
JACQUES-LOUIS DE BEAULIEU ◽  
...  
Keyword(s):  
Conventional Method ◽  
Extraction Method ◽  
Organic Sediment ◽  
Dense Media ◽  
Dense Media Separation ◽  
Sediment Deposit

Pb–Zn mine tailings reprocessing using centrifugal dense media separation

2019 ◽  
Vol 131 ◽  
pp. 28-37 ◽  
Author(s):  
A. Khalil ◽  
R. Argane ◽  
M. Benzaazoua ◽  
H. Bouzahzah ◽  
Y. Taha ◽  
...  
Keyword(s):  
Mine Tailings ◽  
Dense Media ◽  
Dense Media Separation

scholarly journals The Recovery and Concentration of Spodumene Using Dense Media Separation

Minerals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 649
Author(s):  
Charlotte E. Gibson ◽  
Massoud Aghamirian ◽  
Tassos Grammatikopoulos ◽  
Darren L. Smith ◽  
Lindsay Bottomer
Keyword(s):  
Sensitivity Analysis ◽  
Potential Role ◽  
Hard Rock ◽  
Dense Media ◽  
Original Mass ◽  
Electric Vehicle Adoption ◽  
Concentrate Grade ◽  
Expected Increase ◽  
Dense Media Separation

In coming years, global lithium production is expected to increase as the result of widespread electric vehicle adoption. To meet the expected increase in demand, lithium must be sourced from both brine and hard-rock deposits. Heavy liquid separation (HLS) and dense media separation (DMS) tests were conducted on the pegmatites from Hidden Lake, NWT, Canada to demonstrate the potential role of this technology in the concentration of spodumene (LiAlSi2O6) from hard-rock sources. A continuously operated DMS circuit test, conducted on +840 µm material, produced a concentrate grading 6.11% Li2O with ~50% lithium recovery. The circuit rejected 50% of the original mass to tailings, with only 8% lithium losses. Sensitivity analysis showed that minor changes (+/−0.05) in the DMS-specific gravity cut point resulted in significant changes to the mass rejected and to the concentrate grade produced; this may limit the feasibility and operability of the downstream grinding and flotation circuits. The results demonstrate the potential for DMS in the concentration of spodumene from the Hidden Lake pegmatites, and by extension, the potential for DMS in the concentration of spodumene from other hard-rock occurrences.

A Novel Combined Flowsheet of Beneficiation and Acid Leaching under High Pressure for Complex Lead-Zinc Ores

2010 ◽  
Vol 92 ◽  
pp. 13-21
Author(s):  
Han Ping Zhang ◽  
Xiao Li Wang ◽  
Xu Ming Wang ◽  
Sheng Jian ◽  
Qun Zhao
Keyword(s):  
High Pressure ◽  
Acid Leaching ◽  
Zinc Recovery ◽  
Selective Flotation ◽  
Lead And Zinc ◽  
Lead Recovery ◽  
Lead Zinc ◽  
Tail Water ◽  
The Cost ◽  
Zinc Concentrate

The run-of-mine of complex lead-zinc ores in Yunnan contains 3.26% lead and 2.54% zinc. When traditional selective flotation flowsheet was adopted, 3.77% yield and 61.92% grade of lead concentrate as well as 5.65% yield and 38.67% grade of zinc concentrate were achieved. Simultaneously, 72.39％ lead recovery and 3.83% zinc grade in lead concentrate as well as 80.64% zinc recovery and 6.39% lead grade in zinc concentrate were obtained. Lead concentrate and zinc concentrate obtained from selective flotation contain each other severely, resulting in low recovery of lead and zinc and severe loss of metal, which influences subsequent smelting flowsheet. In addition, due to requirement of large amount of depressant and activator while separating lead and zinc in the process of mineral processing, the cost is very high and the compositions of tail water which can not be recycled by the plant are very complicated. For the combined flowsheet of beneficiation and metallurgy, bulk flotation flowsheet was adopted. Therefore, 11.22% yield of combined lead and zinc concentrate with 25.55% lead grade, 18.33% zinc grade and 86.36% lead recovery were obtained. Gravity separation technology was utilized to separate combined concentrate of lead and zinc. After selecting out part of high quality lead concentrate, the remaining combined concentrate of lead and zinc was treated by acid leaching under high pressure. The final leaching efficiency of zinc was able to reach 97%. The new combined flowsheet has lots of advantages such as shorter flowsheet of beneficiation, simpler reagents, more direct reuse of backwater and higher recovery of metals.

Experimental Study on Flotation Process Conditions of Lead-Zinc Ore

2012 ◽  
Vol 454 ◽  
pp. 183-188
Author(s):  
Ming Ming Li ◽  
Qi Dong Zhang
Keyword(s):  
Experimental Study ◽  
Experimental Studies ◽  
Process Conditions ◽  
Good Separation ◽  
Zinc Recovery ◽  
Flotation Process ◽  
Lead Recovery ◽  
Lead Zinc ◽  
Concentrate Grade ◽  
Zinc Concentrate

On the basis of analyzing sample properties of lead-zinc ore, the optimum experimental condition combination was obtained from systematic experimental studies of the conditions. The experimental condition combination was validated by the full process closed-circuit experiment, which showed that the good separation indexes on lead grade of 59.78% in lead concentrates, the lead recovery of 87.50%, and zinc concentrate grade of 56.33%, the zinc recovery of 93.60%, and sulfur concentrate contained 0.50% of lead, 0.47% of zinc.

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