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Wyszukujesz frazę "droplets solidification" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Solidification Mechanism of the D-Gun Sprayed Fe-Al Particles
Autorzy:
Wołczyński, W.
Senderowski, C.
Fikus, B.
Panas, A. J.
Powiązania:
https://bibliotekanauki.pl/articles/351306.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
spraying
rapid solidification
Fe-Al droplets
solidification model
Opis:
The detonation gas spraying method is used to study solidification of the Fe-40Al particles after the D-gun spraying and settled on the water surface. The solidification is divided into two stages. First, the particle solid shell forms during the particle contact with the surrounding air / gas. Usually, the remaining liquid particle core is dispersed into many droplets of different diameter. A single Fe-Al particle is described as a body subjected to a rotation and finally to a centrifugal force leading to segregation of iron and aluminum. The mentioned liquid droplets are treated as some spheres rotated freely / chaotically inside the solid shell of the particle and also are subjected to the centrifugal force. The centrifugal force, and first of all, the impact of the particles onto the water surface promote a tendency for making punctures in the particles shell. The droplets try to desert / abandon the mother-particles through these punctures. Some experimental evidences for this phenomenon are delivered. It is concluded that the intensity of the mentioned phenomenon depends on a given droplet momentum. The droplets solidify rapidly during their settlement onto the water surface at the second stage of the process under consideration. A model for the solidification mechanism is delivered.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 4; 2391-2397
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sedimentation of Copper Droplets after their Coagulation and Growth. Laboratory Scale
Autorzy:
Wołczyński, W.
Bydałek, A. W.
Powiązania:
https://bibliotekanauki.pl/articles/382005.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
innovative foundry technologies
innovative materials
product development
copper droplets suspension
droplets coagulation
droplets solidification
innowacyjne technologie odlewnicze
innowacyjne materiały
rozwój produktów
drobinki miedzi
koagulacja
krzepnięcie
Opis:
The suspension of copper droplets in the slag is considered. The copper/slug suspension is delivered as the product from the direct-to-blister process which is applied in the KGHM – Polska Miedź (Polish Copper) S.A. factory. The droplets / slag suspension was treated by a special set of reagents (patented by the authors) to improve the coagulation process. On the other hand, the observations are made to estimate if the melting / reduction process in the furnace is sufficiently effective to avoid a remaining of carbon in the copper droplets. The coagulation process was carried out in the crucible (laboratory scale). However, conditions imposed to the coagulation / solidification process in the laboratory scale were to some extent similar to those applied usually in the industry when the suspension is subjected to the analogous treatment in the electric arc-furnace. Some suggestions are formulated how to improve the industrial direct-to-blister process.
Źródło:
Archives of Foundry Engineering; 2016, 16, 1; 95-98
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Complex Reagent Efficiency in Reduction of Copper from the Slags in Conditions of the Smelter & Refinery Plant - Głogów
Autorzy:
Wołczyński, W.
Migas, P.
Bydałek, A. W.
Najman, K.
Senderowski, C.
Kwapisiński, P.
Powiązania:
https://bibliotekanauki.pl/articles/382620.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
solidification process
copper droplets
complex reagent
slag
thermo-chemical treatment
krzepnięcie
miedź
odczynniki
żużel
obróbka cieplno-chemiczna
Opis:
The copper droplets contained in the post-processing liquid slag are subjected to the treatment by the complex reagent. The complex reagent has been recently elaborated and patented in frame of the Grant No. PBS3/A5/45/2015. In particular, the complex reagent is dedicated to the post-processing slags coming from the Smelter and Refinery Plant, Głogów, as a product of the direct-to-blister technology performed in the flash furnace. The recently patented complex reagent effectively assists not only in agglomeration, and coagulation but also in the deposition of the copper droplets at the bottom of crucible / furnace as well. The treatment of the post-processing slags by the complex reagent was performed in the BOLMET S.A. Company as in the industrial conditions which were similar to those usually applied in the KGHM – Polish Copper (Smelter and Refinery Plant, Głogów). The competition between buoyancy force and gravity is 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. Finally, sufficiently large copper droplets are subjected to a settlement on the crucible / furnace bottom according to the requirements.
Źródło:
Archives of Foundry Engineering; 2018, 18, 3; 86-90
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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