Fundamental studies on pyrometallurgical processing with a focus on iron making systems

2021 ◽  
Author(s):  
◽  
Siyu Cheng
Keyword(s):  
Pyrometallurgical Processing

Reduction of iron oxides during the pyrometallurgical processing of red mud

2013 ◽  
Vol 2013 (1) ◽  
pp. 33-37 ◽  
Author(s):  
N. A. Raspopov ◽  
V. P. Korneev ◽  
V. V. Averin ◽  
Yu. A. Lainer ◽  
D. V. Zinoveev ◽  
...  
Keyword(s):  
Iron Oxides ◽  
Red Mud ◽  
Reduction Of Iron ◽  
Pyrometallurgical Processing

Recovery of waste printed circuit boards through pyrometallurgical processing: A review

2017 ◽  
Vol 126 ◽  
pp. 209-218 ◽  
Author(s):  
Huaidong Wang ◽  
Shuhao Zhang ◽  
Bin Li ◽  
De’an Pan ◽  
Yufeng Wu ◽  
...  
Keyword(s):  
Printed Circuit Boards ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Waste Printed Circuit Boards ◽  
Pyrometallurgical Processing

scholarly journals Li-Distribution in Compounds of the Li2O-MgO-Al2O3-SiO2-CaO System—A First Survey

Metals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1633
Author(s):  
Thomas Schirmer ◽  
Hao Qiu ◽  
Haojie Li ◽  
Daniel Goldmann ◽  
Michael Fischlschweiger
Keyword(s):  
Efficient Solutions ◽  
High Tech ◽  
Compound System ◽  
X Ray Diffraction ◽  
Critical Elements ◽  
System A ◽  
Novel Approach ◽  
Li Ion ◽  
Mechanical Separation ◽  
Pyrometallurgical Processing

The recovery of critical elements in recycling processes of complex high-tech products is often limited when applying only mechanical separation methods. A possible route is the pyrometallurgical processing that allows transferring of important critical elements into an alloy melt. Chemical rather ignoble elements will report in slag or dust. Valuable ignoble elements such as lithium should be recovered out of that material stream. A novel approach to accomplish this is enrichment in engineered artificial minerals (EnAM). An application with a high potential for resource efficient solutions is the pyrometallurgical processing of Li ion batteries. Starting from comparatively simple slag compositions such as the Li-Al-Si-Ca-O system, the next level of complexity is reached when adding Mg, derived from slag builders or other sources. Every additional component will change the distribution of Li between the compounds generated in the slag. Investigations with powder X-Ray diffraction (PXRD) and electron probe microanalysis (EPMA) of solidified melt of the five-compound system Li2O-MgO-Al2O3- SiO2-CaO reveal that Li can occur in various compounds from beginning to the end of the crystallization. Among these compounds are Li1−x(Al1−xSix)O2, Li1−xMgy(Al)(Al3/2y+xSi2−x−3/2y)O6, solid solutions of Mg1−(3/2y)Al2+yO4/LiAl5O8 and Ca-alumosilicate (melilite). There are indications of segregation processes of Al-rich and Si(Ca)-rich melts. The experimental results were compared with solidification curves via thermodynamic calculations of the systems MgO-Al2O3 and Li2O-SiO2-Al2O3.

scholarly journals Geometallurgical Characterization of Non-Ferrous Historical Slag in Western Tasmania: Identifying Reprocessing Options

Minerals ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 415 ◽  
Author(s):  
Parbhakar-Fox ◽  
Gilmour ◽  
Fox ◽  
Olin
Keyword(s):  
Inductively Coupled Plasma ◽  
Acid Leaching ◽  
Smelting Process ◽  
Inductively Coupled ◽  
Static Testing ◽  
Mineral Phases ◽  
Guideline Values ◽  
Plasma Mass Spectrometry ◽  
Available Technology ◽  
Pyrometallurgical Processing

Pyrometallurgical processing of ore from the Zeehan mineral field was performed intermittently between 1896 and 1948, primarily recovering Pb, Ag and Cu. While Zn recovery was attempted at the time, it was unsuccessful using the available technology. Consequently, Zn reported to the slag during the smelting process. Today, the former smelter site consists of two large slag piles (North and South). Using a range of techniques (including X-ray diffractometry, scanning electron microscopy, laser ablation inductively coupled plasma mass spectrometry, and static testing) the geometallurgical and geo-environmental properties of these slag materials (n = 280) were determined. The South and North piles contain on average 15% and 11% Zn, respectively. A range of complex mineral phases were identified, and are dominated by glass, silicates (i.e., monticellite–kirschsteinite and hardystonite), oxides (gahnite and hercynite) and minor sulfides (sphalerite and wurtzite). Microtextural examinations defined nine mineral phases (Glass A, Silicates A to D, Oxides A and B, Sulfides A and B). Zn was concentrated in Sulfide A (26%), Glass A (24%) and the Silicates (43%), while Pb was concentrated in Oxide B (76%), with Sulfide B host to the highest Ag (45%) and Cu (65%). Considering this, recovery of Zn using conventional hydrometallurgical processes (i.e., sulfuric acid leaching) is suitable, however the application of unconventional biohydrometallurgical techniques could be explored, as well re-smelting. These slag materials are classified geo-environmentally as potentially acid forming, with leachate concentrations of Zn, Pb consistently above ANZECC (2000) aquatic ecosystem 80% protection guideline values, and, for the majority of samples, exceedances of Cu, Ni and Cd were also measured. Considering these findings, reprocessing of these historic slags for Zn extraction may provide an economically feasible management option for rehabilitating this historical site.

Complex Pyrometallurgical Processing of Silicate Raw Material and Technogenic Waste into Market Products

2018 ◽  
Vol 22 (12) ◽  
pp. 14-18
Author(s):  
V.F. Pavlov ◽  
V.F. Shabanov
Keyword(s):  
Amorphous Material ◽  
Bottom Ash ◽  
Metallic Phase ◽  
Raw Material ◽  
Low Grade ◽  
New Approach ◽  
Near Ir ◽  
Technogenic Waste ◽  
Processing Facility ◽  
Pyrometallurgical Processing

A new approach to solving the problem of complex nonwaste processing of bottom ash waste (BAW) of low-grade metallic and nonmetallic feeds has been set forth. The solution is based on deep recreative melting of various burden materials with dividing the flux into a metallic phase and a silicate part that virtually does not contain any metal oxides. It has been shown that, depending on the method of producing the flux, various materials are generated: a foamed X-ray amorphous material (foamed silicate) with a stable formulation, a fine mineral fiber or spheres depending on technological modes. It follows from this work that the obtained foamed material is a semiproduct used as a fill insulation, a raw material for manufacturing foam ceramics and optically transparent glasses in the visible and near-IR ranges, and a sorbent for collection of oil products. On the basis of the experimental data, an industrial waste processing facility has been developed.

scholarly journals Biomining – Biotechnological Systems for the Extraction and Recovery of Metals from Secondary Sources

2018 ◽  
Vol 20 (4) ◽  
pp. 737-742 ◽  
Keyword(s):  
Large Scale ◽  
Low Cost ◽  
Biological Systems ◽  
Bottom Ash ◽  
Precious Metals ◽  
Small Scale ◽  
Secondary Sources ◽  
Hydrometallurgical Processing ◽  
Pre Treatment ◽  
Pyrometallurgical Processing

<p>Biomining is the common term used to define processes that utilize biological systems to facilitate the extraction of metals from ores. Nowadays, a biomining concept can be defined as a two stage combined biological systems (1st stage bioleaching and 2nd stage biosorption) in order to perform the extraction and recovery of the metals from secondary sources such as industrial and mining waste, waste electrical and electronic equipment (WEEE), bottom ash and end of life vehicles. Overwhelming demand and limited sources of metals have resulted in searching new sources so that attentions have been shifted from mining process towards recycling of secondary resources for the recovery of metals. There are several metallurgical processes for metal recovery from the secondary sources such as pyrometallurgical processing, hydrometallurgical and bio/hydrometal-lurgical processing. Biomining processes are estimated to be relatively low-cost, environmentally friendly and suitable for both large scale as well as small scale applications under the bio/hydrometallurgical processing. Thus, the process involves physical separation (pre-treatment) and biomining (bioleaching and biosorption) and hydrometallurgical processes for recovery of base metals, rare earth elements (REEs) and precious metals from e-waste was evaluated.</p>

scholarly journals “Zero-Waste”: A Sustainable Approach on Pyrometallurgical Processing of Manganese Nodule Slags

Minerals ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 544 ◽  
Author(s):  
Marcus Sommerfeld ◽  
David Friedmann ◽  
Thomas Kuhn ◽  
Bernd Friedrich
Keyword(s):  
Manganese Nodule ◽  
Extraction Process ◽  
Metallic Phase ◽  
Manganese Nodules ◽  
Critical Metals ◽  
Zero Waste ◽  
Federal Institute ◽  
Valuable Metals ◽  
Pyrometallurgical Processing ◽  
Cobalt Copper

A continuously growing demand for valuable non-ferrous metals and therefore an increase in their prices at the metal exchanges makes it necessary and profitable to investigate alternative metal resources. Polymetallic deep-sea nodules contain cobalt, copper, manganese, molybdenum and nickel, and are highly abundant on the sea floor. Developing a metallurgical process to recover the metal content from manganese nodules can close the predicted supply gap of critical metals like cobalt. This paper investigated a potential extraction process for valuable metals from manganese nodules supplied by the German Federal Institute for Geosciences and Natural Resources. The samples originated from the German license area of the Clarion-Clipperton Zone in the Pacific Ocean. Due to a low concentration of valuable metals in nodules, a pyrometallurgical enrichment step was carried out to separate cobalt, copper, molybdenum and nickel in a metallic phase. The manganese was discarded in the slag and recovered in a second smelting step as ferromanganese. To aid the experiments, FactSageTM was used for thermodynamic modeling of the smelting steps. To increase metal yields and to alter the composition of the metal alloys, different fluxes were investigated. The final slag after two reduction steps were heavy-metal free and a utilization as a mineral product was desired to ensure a zero-waste process.

scholarly journals Promising deposits of complex iron ore raw materials of Urals and its processing new technologies

2018 ◽  
Vol 56 ◽  
pp. 03002
Author(s):  
Sergei Kornilkov ◽  
Andrei Dmitriev ◽  
Aleksei Pelevin
Keyword(s):  
Iron Ore ◽  
New Technologies ◽  
Raw Materials ◽  
Pyrometallurgical Processing ◽  
Degree Of Extraction ◽  
Titanium Vanadium

There have been provided general geological and metallurgical characteristics of some complex iron ore raw materials of Urals, which contain not only iron but also titanium, vanadium, chrome, and nickel. There has been provided the description of such deposits. It is shown that the degree of extraction of certain products is determined by the choice of extraction, benefication, pyrometallurgical processing procedures.

Pyrometallurgical Processing of Desulphurization Slags

2018 ◽  
pp. 127-135
Author(s):  
Christoph Pichler ◽  
Jürgen Antrekowitsch ◽  
Karl Pilz
Keyword(s):  
Pyrometallurgical Processing
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