scholarly journals Influence of Lead Nitrate on Sulfurizing Flotation of a Copper-Cobalt Oxide Ore

2021 ◽  
Vol 18 (10) ◽  
Author(s):  
Meschack Mukunga MUANDA ◽  
Pele Pascal Daniel OMALANGA
Keyword(s):  
Cobalt Oxide ◽  
Sodium Silicate ◽  
Froth Flotation ◽  
Lead Nitrate ◽  
Valuable Metals

Copper-cobalt oxide ores contain several minerals that are economically treatable by concentration techniques. The most used technique is froth flotation in which selective reagents are used to recover more valuables. It is, therefore, important to examine the optimal doses of those reagents while investigating the behaviors of minerals at the same time. This study explored the influence of lead nitrate Pb(NO3)2 on the froth flotation of oxide ore to increase valuable metals recoveries. Four factors were investigated including Pb(NO3)2 dosage, its conditioning, its addition dose in the 2nd fraction, and sulfidiser dosage. Other parameters were kept constant. The optimum was found at 25 g/t of Pb(NO3)2, conditioning together with sodium silicate (Na2SiO3) for 5 min, the addition of 5 g/t of Pb(NO3)2 in the 2nd fraction, and 3,000 g/t of sulfidiser.  Recoveries in concentrates were 79.51 % Copper (Cu) and 60.27 % Cobalt (Co), with grades of 9.49 and 0.67 %, respectively. The conclusion was that the use of Pb(NO3)2 can considerably improve copper and cobalt recoveries.

Experimental Study on Floatation of Scheelite Ore of Jiangxi

2013 ◽  
Vol 868 ◽  
pp. 429-432 ◽  
Author(s):  
Dan Dan Wu ◽  
Shu Ming Wen ◽  
Jing Yang ◽  
Jiu Shuai Deng ◽  
Jian Liu
Keyword(s):  
Experimental Study ◽  
Sodium Silicate ◽  
Sodium Carbonate ◽  
Lead Nitrate ◽  
High Quality ◽  
Flotation Process ◽  
And Tungsten

In this study, according to the characteristics of scheelite in run-of-mine, the scheelite was concentrated by adopting the full flotation process with sodium carbonate as regulator agent, sodium silicate as inhibitor for gangue minerals, lead nitrate as activator and ZL pharmacy as collector. 6.15% of the coarse scheelite concentration with tungsten recovery of 96.18% was obtained from the raw ores with grade of 0.86%. The concentration of rough tungsten by heating, by which the high-quality scheelite with tungsten of 62.31% and tungsten concentrate recovery of 93.53% was obtained.

scholarly journals Integrating Flotation and Pyrometallurgy for Recovering Graphite and Valuable Metals from Battery Scrap

Metals ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 680 ◽  
Author(s):  
Ronja Ruismäki ◽  
Tommi Rinne ◽  
Anna Dańczak ◽  
Pekka Taskinen ◽  
Rodrigo Serna-Guerrero ◽  
...  
Keyword(s):  
Froth Flotation ◽  
Lithium Ion ◽  
Inert Atmosphere ◽  
Cleaning Process ◽  
Experimental Conditions ◽  
Rapid Reduction ◽  
Slag Cleaning ◽  
Novel Approach ◽  
Valuable Metals ◽  
Battery Scrap

Since the current volumes of collected end-of-life lithium ion batteries (LIBs) are low, one option to increase the feasibility of their recycling is to feed them to existing metals production processes. This work presents a novel approach to integrate froth flotation as a mechanical treatment to optimize the recovery of valuable metals from LIB scrap and minimize their loss in the nickel slag cleaning process. Additionally, the conventional reducing agent in slag cleaning, namely coke, is replaced with graphite contained in the LIB waste flotation products. Using proper conditioning procedures, froth flotation was able to recover up to 81.3% Co in active materials from a Cu-Al rich feed stream. A selected froth product was used as feed for nickel slag cleaning process, and the recovery of metals from a slag (80%)–froth fraction (20%) mixture was investigated in an inert atmosphere at 1350 °C and 1400 °C at varying reduction times. The experimental conditions in combination with the graphite allowed for a very rapid reduction. After 5 min reduction time, the valuable metals Co, Ni, and Cu were found to be distributed to the iron rich metal alloy, while the remaining fraction of Mn and Al present in the froth fraction was deported in the slag.

scholarly journals Flotation Studies on Scheelite Concentrate of Chitral, NWFP, Pakistan

1970 ◽  
Vol 46 (1) ◽  
pp. 123-126 ◽  
Author(s):  
KR Kazmi ◽  
MA Bhatti ◽  
A Mehmood ◽  
MS Anwar ◽  
ST Sheikh
Keyword(s):  
Oleic Acid ◽  
Key Words ◽  
Sodium Silicate ◽  
Froth Flotation ◽  
Pulp Density ◽  
High Quality ◽  
Scheelite Concentrate ◽  
Flotation Technique ◽  
Tungsten Metal ◽  
Optimum Grade

A scheelite concentrate, containing 32% WO3, obtained from an indigenous tungsten ore of Chitral, NWFP, Pakistan, has been beneficiated by froth flotation technique to produce high quality tungsten concentrate assaying 64.8% WO3 with 84.47% recovery. This paper presents results on the optimization of flotation parameters like pH, pulp density and reagents. The optimum grade and recovery have been obtained at a feed size of 80 % passing 74 μm, pulp pH of 10.5, pulp solids 25%, oleic acid 0.30 kg/t, polyglycol 0.02 kg/t and sodium silicate 0.125 kg/t of the feed. The obtained tungsten concentrate meets the specifications required to produce tungsten metal and tungsten based chemicals. Key words: Scheelite Concentrate; Beneficiation; Flotation; Grade; Recovery DOI: http://dx.doi.org/10.3329/bjsir.v46i1.8115 Bangladesh J. Sci. Ind. Res. 46(1), 123-126, 2011

Recovery of valuable metals from WPCB fines by centrifugal gravity separation and froth flotation

2021 ◽  
Author(s):  
Nazlım İlkyaz Dinç ◽  
Alper Umut Tosun ◽  
Esra Baştürkcü ◽  
Mustafa Özer ◽  
Fırat Burat
Keyword(s):  
Froth Flotation ◽  
Gravity Separation ◽  
Valuable Metals

Electrochemical and photoelectrochemical water splitting with a CoOx catalyst prepared by flame assisted deposition

2020 ◽  
Vol 49 (3) ◽  
pp. 588-592 ◽  
Author(s):  
Fusheng Li ◽  
Ziqi Zhao ◽  
Hao Yang ◽  
Dinghua Zhou ◽  
Yilong Zhao ◽  
...  
Keyword(s):  
Cobalt Oxide ◽  
Water Splitting ◽  
Water Oxidation ◽  
Oxide Catalyst ◽  
Photoelectrochemical Water Splitting ◽  
Deposition Method ◽  
Photoelectrochemical Water Oxidation

A cobalt oxide catalyst prepared by a flame-assisted deposition method on the surface of FTO and hematite for electrochemical and photoelectrochemical water oxidation, respectively.

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