Temat: wet milling - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Synthesis of nano-structured duplex and ferritic stainless steel powders by dry milling and its comparison with wet milling
Autorzy:: Shashanka, R.
Uzun, Orhan
Chaira, D.
Powiązania:: https://bibliotekanauki.pl/articles/356573.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: powder metallurgy
dry milling
wet milling
planetary milling
stainless steel
sintering
Opis:: In the present paper, elemental Fe, Cr and Ni powders were used to fabricate nano-structured duplex and ferritic stainless steel powders by using high energy planetary ball milling. We have studied the effect of milling atmosphere like wet (toluene) and dry (argon) milling of elemental Fe-18Cr-13Ni (duplex) and Fe-17Cr-1Ni (ferritic) powders for 10 h in a dual drive planetary mill. Stearic acid of 1wt.% was added during milling to avoid agglomeration. The dry and wet milled duplex and ferritic stainless steel powders were characterized by XRD, SEM and particle size analysis techniques. We have found that both the milling atmospheres have great influence in controlling the final particle morphology, size and phase evolution during milling. It was reported that dry milling is more effective in reducing particle size than the wet milling. The Nelson-Riley method of extrapolation was used to calculate the precise lattice parameter and Williamson-Hall method was used to calculate the crystallite size and lattice strain of both the stainless steel milled in argon atmosphere. Dry milled duplex and ferritic stainless steel were then consolidated by conventional sintering method at 1100, 1200 and 1300°C temperatures under argon atmosphere for 1 hour.
Źródło:: Archives of Metallurgy and Materials; 2020, 65, 1; 5-14
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Mechano-chemical conversion of celestite in highly concentrated sodium carbonate media
Autorzy:: Sezer, Raşit
Arslan, Cüneyt
Powiązania:: https://bibliotekanauki.pl/articles/109788.pdf
Data publikacji:: 2019
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: celestite
wet milling
direct conversion
response surface methodology
strontium carbonate
Opis:: An effect of high-energy ball milling on the mechano-chemical conversion of celestite to strontium carbonate (SrCO3) was studied. A celestite ore was ground by a planetary ball mill in a highly concentrated sodium carbonate (Na2CO3) solution. The experimental study was carried out to determine the effects of milling time (15, 30, and 45 min) and Na2CO3 concentration (1, 1.25, and 1.5 M) on the particle size and SrCO3 percentage of the product. A celestite/ball weight ratio was selected as 1/10 and the volume of carbonate solution was calculated for the stoichiometric amount of sulfate in celestite, as constant. After filtering, washing and drying the precipitated SrCO3 sludge was analyzed by XRD, SEM-EDS. Powders were leached in HCl solution and analyzed by AAS in order to determine the SrCO3 amount in the product. A response surface methodology was applied via the Box-Behnken method for the results of particle size and SrCO3 percentage. Regression model coefficients were 98.61 and 98.14%, which were the results of compatibility as experimentally obtained and predicted by the model, respectively. The maximum amount of SrCO3, 96.84% and the minimum particle size, 10.297 μm were obtained with the maximum values of the parameters, 45 min, 1.5 M Na2CO3, and 450 rpm.
Źródło:: Physicochemical Problems of Mineral Processing; 2019, 55, 2; 324-335
1643-1049
2084-4735
Pojawia się w:: Physicochemical Problems of Mineral Processing
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: The effect of mechanical disintegration on whe straw biodegradability of wheat straw
Wpływ mechanicznej dezintegracji na biodegradowalność słomy pszennej
Autorzy:: Krátký, L.
Jirout, T.
Powiązania:: https://bibliotekanauki.pl/articles/2072636.pdf
Data publikacji:: 2013
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: biogas yield
energy requirement
MACERATOR
wet milling
wheat straw
wydajność biogazu
zapotrzebowanie energii
mielenie mokre
słoma pszeniczna
Opis:: Present-day operating biogas plants are based on the treatment of lignocellulosic biomass presented in such materials as agriculture and forestry wastes, municipal solid waste, waste paper, wood and herbaceous energy crops. The biodegradability of untreated substrates is generally very low because of physical and chemical barriers caused by structure of lignocelulosic biomass. Therefore, pretreatment of biomass is an essential step in order to increase biomass digestibility. This paper is devoted to the mechanical disintegration of straw by the newly developed prototype of mill named MACERATOR. Its effectiveness is evaluated by the energy requirement for disintegration of wheat straw, by changes in particle sizes and also by biogj tests.
Obecnie, czynne biogazownie opierają się na obróbce masy lignocelulozowej, która zawarta jest w takich materiałach jak: rolnicze i leśne odpady, stałe odpady komunalne, zużyty papier, drewno i rośliny energetyczne. Biodegradowalność nieprzerobionych substratów ogólnie jest bardzo niska ze względu na ﬁzyczne i chemiczne bariery, spowodowane przez strukturę masy lignocelulozowej. Dlatego też obróbka biomasy jest istotnym etapem podniesienia jej fermentowalności. Artykuł ten poświęcony jest mechanicznej dezintegracji słomy pszennej za pomocą nowo utworzonego prototypu młyna o nazwie MACERATOR. Jego efektywność jest oceniana na podstawie zapotrzebowania energetycznego na dezintegrację słomy pszennej poprzez zmiany wymiaru cząstek i testów na wydajność biogazu.
Źródło:: Inżynieria i Aparatura Chemiczna; 2013, 3; 202--203
0368-0827
Pojawia się w:: Inżynieria i Aparatura Chemiczna
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 4.

Tytuł:: Synthesis And Electrochemical Characteristics Of Mechanically Alloyed Anode Materials SnS2 For Li/SnS2 Cells
Synteza mechaniczna i charakterystyka elektrochemiczna materiałów anodowych SnS2 dla ogniw Li/SnS2
Autorzy:: Hong, J. H.
Liu, X. J.
Park, D. K.
Kim, K. W.
Ahn, H. J.
Ahn, I. S.
Powiązania:: https://bibliotekanauki.pl/articles/356903.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: MA
Li/SnS2 cell
PCA
wet milling process and electrochemical characteristics
ogniwa Li/SnS2
charakterystyka elektromechaniczna
Opis:: With the increasing demand for efficient and economic energy storage, tin disulfide (SnS₂), as one of the most attractive anode candidates for the next generation high-energy rechargeable Li-ion battery, have been paid more and more attention because of its high theoretical energy density and cost effectiveness. In this study, a new, simple and effective process, mechanical alloying (MA), has been developed for preparing fine anode material tin disulfides, in which ammonium chloride (AC), referred to as process control agents (PCAs), were used to prevent excessive cold-welding and accelerate the synthesis rates to some extent. Meanwhile, in order to decrease the mean size of SnS₂ powder particles and improve the contact areas between the active materials, wet milling process was also conducted with normal hexane (NH) as a solvent PCA. The prepared powders were both characterized by X-ray diffraction, Field emission-scanning electron microscopeand particle size analyzer. Finally, electrochemical measurements for Li/SnS₂ cells were takenat room temperature, using a two-electrode cell assembled in an argon-filled glove box and the electrolyte of 1M LiPF₆ in a mixture of ethylene carbonate(EC)/dimethylcarbonate (DMC)/ethylene methyl carbonate (EMC) (volume ratio of 1:1:1).
Źródło:: Archives of Metallurgy and Materials; 2015, 60, 2B; 1191-1194
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "wet milling" wg kryterium: Temat

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język