Preparation of high-purity lead oxide from spent lead paste by low temperature burning and hydrometallurgical processing with ammonium acetate solution

RSC Advances ◽  
2016 ◽  
Vol 6 (25) ◽  
pp. 21148-21155 ◽  
Author(s):  
Cheng Ma ◽  
Yuehong Shu ◽  
Hongyu Chen
Keyword(s):  
Low Temperature ◽  
Lead Oxide ◽  
Ammonium Acetate ◽  
Lead Dioxide ◽  
Lead Sulfate ◽  
Acetate Solution ◽  
Lead Acid Battery ◽  
Hydrometallurgical Processing ◽  
Sulfate Lead ◽  
Main Components

Lead sulfate, lead dioxide and lead oxide are the main components of lead paste in a spent lead-acid battery.

Investigation of Flotation Separation of Elemental Sulfur and Sulfides from Lead Sulfate from Low-Temperature Leaching of Lead Concentrates

2020 ◽  
Vol 989 ◽  
pp. 537-542
Author(s):  
Kirill A. Karimov ◽  
Aleksei V. Kritskii ◽  
Sergey E. Polygalov
Keyword(s):  
Low Temperature ◽  
Filter Cake ◽  
Elemental Sulfur ◽  
Lead Sulfate ◽  
Raw Material ◽  
Granulation Process ◽  
Flotation Concentrate ◽  
Autoclave Leaching ◽  
Sulfate Lead ◽  
Concentrate Yield

Monometallic ore that is mostly lead found in nature is extremely rare. The main natural raw material for the lead production is sulfide polymetallic ores. In this study the filter cake processing after the low-temperature autoclave leaching of the lead concentrate to produce a sulphide concentrate and lead tailings was investigated The study of component separation was carried out using the methods of mathematical planning of the second order experiment. The following optimal costs of reagents, g/t: 140-200 potassium xanthate, 70-100 foaming agent, 100 copper sulfate; the concentrate yield is 41-43 %; it is extracted to, %: 95 Fe, 49 Cu, 96 Zn, 98 S0, 18-19 Pb. At flotation 18,7% of lead goes into flotation concentrate and 80.5% is lead sulfate. The rectification of the obtained concentrate by flotation did not give acceptable results, since the yield of the foam product in all experiments was 93-96%. For the separation of lead sulphate from sulphur-sulfide concentrate was used in the granulation of sulfur in the following conditions: t = 145 °C, Po2 = 0,0-0,5 MPa, τ = 60 to 120 min. In the granulation process of the flotation concentrate is a division of lead sulfate and elemental sulfur, the sulfate lead content in sulphur-sulfide phase is decreased from 28.44 % to 3.5 %, its recovery in a sulfate filter cake has reached 90.6 %

Synthesis, structure, optical and electrochemical properties of the lead sulfate-lead dioxide-lead glasses and vitroceramics

2015 ◽  
Vol 274 ◽  
pp. 111-118 ◽  
Author(s):  
S. Rada ◽  
L. Rus ◽  
M. Rada ◽  
E. Culea ◽  
N. Aldea ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Lead Dioxide ◽  
Lead Sulfate ◽  
Sulfate Lead

Conversion of tetrabasic lead sulfate to lead dioxide in lead/acid battery plates

1992 ◽  
Vol 38 (1-2) ◽  
pp. 87-102 ◽  
Author(s):  
L.T. Lam ◽  
A.M. Vecchio-Sadus ◽  
H. Ozgun ◽  
D.A.J. Rand
Keyword(s):  
Lead Dioxide ◽  
Lead Sulfate ◽  
Lead Acid Battery ◽  
Lead Acid

Pulsed-current formation of tetrabasic lead sulfate in cured lead/acid battery plates

1993 ◽  
Vol 42 (1-2) ◽  
pp. 55-70 ◽  
Author(s):  
L.T. Lam ◽  
H. Ozgun ◽  
L.M.D. Cranswick ◽  
D.A.J. Rand
Keyword(s):  
Lead Sulfate ◽  
Pulsed Current ◽  
Lead Acid Battery ◽  
Lead Acid

The Study of the Melting of Waelz Oxide with an Increase in the Temperature of the Calcination Process

2021 ◽  
Vol 316 ◽  
pp. 705-710
Author(s):  
A.G. Ryazanov ◽  
A.V. Senin ◽  
V.D. Nasonov
Keyword(s):  
Partial Melting ◽  
Gas Phase ◽  
Lead Oxide ◽  
Elevated Temperatures ◽  
Lead Sulfate ◽  
Raw Material ◽  
Chemical Transformations ◽  
Calcination Process ◽  
Waelz Oxide ◽  
Negative Effect

Waelz-oxide is a raw material for the production of metallic zinc. Waelz-oxide contains impurities of zinc and lead chlorides and fluorides. Halides have a negative effect on the process of zinc electrolysis. Halides have a relatively low boiling point; therefore, they are removed into the gas phase by calcining Waelz-oxide at 800–850 °С. To intensify the process, calcination is sometimes carried out at elevated temperatures of 1100–1250 °С. However, an increase in temperature leads to partial melting and granulation of the calcined product. In the present work, the chemical and phase composition of the initial and calcined Waelz-oxide was studied. Thermodynamic modeling of phase and chemical transformations of Waelz-oxide components during heating has been performed. Experiments on calcination of Waelz-oxide in laboratory conditions at temperatures of 600–1250 °C were carried out. It was found that partial melting and granulation of Waelz-oxide is the result of the formation of fusible eutectics containing lead oxide. Lead oxide is formed as a result of decomposition of lead sulfate when heated above 1100 °C. A similar effect is not observed at a standard calcination temperature of 850 °C.

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