Chlorination methods applied to recover refractory metals from tin slags

Brocchi, E. A.; Moura, F.

doi:10.1016/j.mineng.2007.08.011

Cited by 77 publications

(39 citation statements)

References 1 publication

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“…Both oxides minerals have chemical properties similarities [6]. Due to the tantalum low availability, I have done many researches to recovery tantalum from tin slags [7][8][9][10][11][12][13][14]. Table 1 shows sources of tin slags complete with their tantalum and niobium oxides.…”

Section: Introductionmentioning

confidence: 99%

Upgrading tantalum and niobium oxides content in Bangka tin slag with double leaching

Soedarsono

Permana

Hutauruk

et al. 2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. Tantalum has become one of the 14 types of critical materials where the level of its availability is assumed as the midterm critical metal. Benefits of the element tantalum in the electronics field increased the deficit balance of supply / demand, as more variations of electronic products developed. The tantalum experts calculated the level of availability until 2020. Base on the previous studies, tin slag is a secondary source of tantalum and niobium. This study uses tin slag from Bangka, Indonesia, abbreviated, Bangka Tin Slag (BTS). BTS was roasted, water quenched and sieved, abbreviated BTS-RQS.BTS was roasted, water quenched and sieved, abbreviated BTS-RQS.BTSgiven sample code BTS-R700QS, while roasted at 800C given sample code BTS-R800QS.A variable leaching experiment on BTS-R700QS was solvent concentration variable and on BTS-R800QS was time variable. The entire residue was characterized by X-Ray Fluorescence (XRF), and the optimum results are on the BTS-R800QS leaching into 5 M NaOH for 20 min followed by 5M HCl for 50 min, with content of Ta2O5 and Nb2O51.56% and 1.11%, respectively. The result of XRF measurement showed was the increasing of TNO content due to the increasing solvent concentration and time of acid leaching. The discussion of thermodynamics this study used was HSC Chemistry 6 as a supporting data.

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Section: Introductionmentioning

confidence: 99%

Upgrading tantalum and niobium oxides content in Bangka tin slag with double leaching

Soedarsono

Permana

Hutauruk

et al. 2018

IOP Conf. Ser.: Mater. Sci. Eng.

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“…Also, the nonferrous metal content in pyrite cinder must be very low because it is hard to remove the nonferrous metals by sintering and pelletizing. According to the literature, [10][11][12][13] high temperature chloridizing roasting technology has been successfully applied to recover iron and valuable nonferrous metals but mainly focused on the processing high iron grade pyrite cinder.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Prereduced Pellets by Pyrite Cinder Containing Nonferrous Metals with High Temperature Chloridizing-reduction Roasting Technology

2014

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Pyrite cinder contains considerable amount of nonferrous metals and the iron grade of pyrite cinder is low for blast furnace burden, so processing the pyrite cinder has become a significant issue for the utilization of valuable resources and environmental protection. In this study, a technique with high temperature chloridizing-reduction roasting is presented in aim to remove nonferrous metals from iron and produce blast furnace burden with high quality. The effects of chloridizing temperature and time, chlorinating agent dosage, reduction temperature and time are investigated. The optimum process parameters are determined as follows: chloridizing at 1 125°C for 10 min, CaCl2 dosage of 2% and reduction at 1 100°C and the coal/cinder ratio of 2.5 for 40 min. Under these conditions, the compressive strength of prereduced pellets is 1147N per pellet, the metallization degree is 84.53% and the removal rates of Cu, Pb and Zn are 37.87%, 99.31% and 80.20%, respectively.

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“…In Europe, for example, during 2008 1.3 million tons of ferrous slag were excavated from heaps to fulfill building purposes such as road construction (Bialucha et al, 2011). The research focus has been on composition studies (Richardson et al, 1994;Gorai et al, 2002) and methods on a laboratory scale for extracting the metals from slag (Wilson et al, 2006;Brocchi and Moura, 2007).…”

Section: Subtype 4: Slag Miningmentioning

confidence: 99%

An integrated review of concepts and initiatives for mining the technosphere: towards a new taxonomy

Johansson

Krook

Eklund

et al. 2013

Journal of Cleaner Production

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Stocks of finite resources in the technosphere continue to grow due to human activity, at the expense of decreasing in-ground deposits. Human activity, in other words, is changing the prerequisites for mineral extraction. For that reason, mining will probably have to adapt accordingly, with more emphasis on exploitation of previously extracted minerals.This study reviews the prevailing concepts for mining the technosphere as well as actual efforts to do so, the objectives for mining, the scale of the initiatives, and what makes them different from other reuse and recycling concepts. Prevailing concepts such as "urban mining," however, are inadequate guides to the complexity of the technosphere, as these concepts are inconsistently defined and disorganized, often overlapping when it comes to which stocks they address. This review of these efforts and their potential is therefore organized around a new taxonomy based on the umbrella concept technospheric mining, defined as the extraction of technospheric stocks of minerals that have been excluded from ongoing anthropogenic material flows.An analysis on the basis of this taxonomy shows that the prevailing mining initiatives are generally scattered and often driven by environmental factors, in which metal recovery is viewed as an additional source of revenue. However, development of technology, specialized actors and new business models and policy instruments, could lead to technospheric mining operations becoming a profit-driven business.

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Chlorination methods applied to recover refractory metals from tin slags

Cited by 77 publications

References 1 publication

Upgrading tantalum and niobium oxides content in Bangka tin slag with double leaching

Upgrading tantalum and niobium oxides content in Bangka tin slag with double leaching

Preparation of Prereduced Pellets by Pyrite Cinder Containing Nonferrous Metals with High Temperature Chloridizing-reduction Roasting Technology

An integrated review of concepts and initiatives for mining the technosphere: towards a new taxonomy

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