Determining the Degree of Removal of Copper From Slag

Bydałek, A. W.; Migas, Piotr; Wołczyński, W.; Biernat, S.; Jasińska, K.; Kwapisiński, P.

doi:10.1515/afe-2016-0081

Cited by 4 publications

(3 citation statements)

References 6 publications

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“…Additionally, the efficiency of the complex reagent ingredients (recently patented [13]) was also studied since the chemical usually used in the industrial conditions seems to promote an agglomeration and coagulation of droplets, mainly [11].…”

Section: Phenomenon Of the Droplet Self-cleaningmentioning

confidence: 99%

Archives of Metallurgy and Materials

Wołczyński¹,

Bydałek²,

Migas³

et al. 2018

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The post-processing slags containing about 0.8 wt.% of copper were subjected to the treatment of a complex reagent. The chemical composition of the complex reagent has been elaborated and patented in frame of the Grant No. PBS3/A5/45/2015. The slags had an industrial origin and were delivered by the Smelter and Refinery Plant, Głogów, as a product of the direct-to-blister technology performed in the flash furnace assisted by the arc furnace. An agglomeration of copper droplets suspended in the liquid slag, their coagulation, and deposition on the bottom of furnace were observed after the treatment this post-processing slag by the mentioned reagent. The treatment of the post-processing slags by the complex reagent was performed in the arc furnace equipped with some additional electrodes situated at the furnace bottom (additional, in comparison with the arc furnace usually applied in the Smelter and Refinery Plant, Głogów). The behaviour of the copper droplets in the liquid slag within the competition between buoyancy force and gravity was studied from the viewpoint of the required deposition of coagulated copper droplets. The applied complex reagent improves sufficiently the surface free energy of the copper droplets. In the result, the mechanical equilibrium between coagulated copper droplets and surrounding liquid slag is properly modified. Eventually, sufficiently large copper droplets are subjected to a settlement on the furnace bottom according to the requirements. The agglomeration and coagulation of the copper droplets were significantly improved by an optimized tilting of the upper electrodes and even by their rotation. Moreover, the settlement was substantially facilitated and improved by the employment of both upper and lower system of electrodes with the simultaneous substitution of the variable current by the direct current.

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Section: Phenomenon Of the Droplet Self-cleaningmentioning

confidence: 99%

Archives of Metallurgy and Materials

Wołczyński¹,

Bydałek²,

Migas³

et al. 2018

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“…droplets coagulation, [1]. The coagulation (preceded by the copper droplets agglomeration) is carried out during the second step of the slag treatment performed with the use of some reagents, [2]. Subsequently, sedimentation of sufficiently large droplets on the crucible / furnace bottom is expected, especially, when the application of the recently patented complex reagent, [3], would be applied, (Fig.…”

Section: Suspension Of Copper Droplets In Liquid Slagmentioning

confidence: 99%

Copper droplets agglomeration/coagulation in the conditions similar to industrial ones

Wołczyński¹,

Sypień²,

Tarasek³

et al. 2017

Archives of Metallurgy and Materials

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COPPER DROPLETS AGGLOMERATION / COAGULATION IN THE CONDITIONS SIMILAR TO INDUSTRIAL ONESThe studied copper droplets suspension in the liquid slag came from the direct-to-blister technology developed in the KGHM -Polska Miedź S.A. plants. A treatment by the stimulators and reagents was performed in the conditions delivered / ensured by the BOLMET S.A., Wiechlice. These conditions were similar to those usually applied to the industrial process. Particularly, this treatment was similar, to some extent, to that known for the electric arc-furnace technology employed in the Smelter and Refinery Plant, Głogów. An effectiveness of the newly developed and patented complex chemical / reagent for the copper removal from slag was tested during the treatment. The effect of the liquid slag stirring on the copper droplets self-cleaning was also analysed. The performed test confirmed the effectiveness of the studied complex reagent in agglomeration, coagulation and sedimentation of the copper droplets.

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“…According to different sources, the value of Young's module for tin bronzes varies between 0.96 -1.2E+5 MPa and density 7400 -8900 kg/m 3 depending on the content of tin and other elements. The parameters of: melt process (time, temperature), liquid metal treatment (deoxidation, modification) [2][3][4][5][6] and solidification kinetics significantly influence the density of tin bronzes because of their tendency to porosity [2]. Hence such a large range of density values one can observe.…”

Section: Introductionmentioning

confidence: 99%

Archives of Foundry Engineering

Bartocha¹,

Baron²,

Suchoń³

2018

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The most important feature of bells is their sound. Their clarity and beauty depend, first of all, on the bell's geometry -particularly the shape of its profile and the mechanical properties of alloy. Bells are the castings that work by emitting sound in as-cast state. Therefore all features that are created during melting, pouring, solidification and cooling processes will influence the bell's sound. The mechanical properties of bronze depend on the quality of alloy and microstructure which is created during solidification and depend on its kinetics. Hence, if the solidification parameters influence the alloy's properties, how could they influence the frequencies of bell`s tone? Taking into account alterable thickness of bell's wall and differences in microstructure, the alloy's properties in bell could be important. In the article authors present the investigations conducted to determine the influence of cooling kinetics on microstructure of bronze with 20 weight % tin contents.

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Determining the Degree of Removal of Copper From Slag

Cited by 4 publications

References 6 publications

Archives of Metallurgy and Materials

Archives of Metallurgy and Materials

Copper droplets agglomeration/coagulation in the conditions similar to industrial ones

Archives of Foundry Engineering

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