عناصر کمیاب و منابع آنها در روی زمین عناصر کمیاب زمین، عنصرهای ۵۸ تا ۷۱ جدول تناوبی را تشکیل می‌دهند...
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کانسارهاى افشان (پراکنده) و استوک ورک همراه با توده هاى نفوذى Disseminated and stock work deposits associated with plutonic intrusives...
قدمت استفاده از سنگریزه‌ها و خرده‌سنگ‌ها انسان از زمان‌های دور سنگریزه‌ها را جمع می‌کرد و از آنها ابزار می‌ساخت، او...
سنگ شکن موبایل امروزه کارشناسان دریافته‌اند که یکی از مهمترین عوامل در قیمت تمام شده کالا، هزینه حمل و نقل...
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Frame ID: G01 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 50x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features:Intergrowths of graphite crystals in Ceylon lump graphite High Resolution Image (300 dpi) |
| Description: The different colored areas are of natural graphite at different optical orientations. Note the nature of the crystal intergrowths. | |
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Frame ID: G02 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 50x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features: Coarse flake graphite High Resolution Image (300 dpi) |
| Description: The natural graphite flakes are seen in cross-section. They are isotropic except where strain has introduced anistropy. | |
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Frame ID: G03 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 50x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features: Coarse flake graphite High Resolution Image (300 dpi) |
| Description: The natural graphite flakes are seen in cross-section. They are isotropic except where strain has introduced anistropy. Note the well developed layering. | |
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Frame ID: G04 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 20x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features: Filler and binder phases in nuclear graphite High Resolution Image (300 dpi) |
| Description: This frame shows a typical pile grade moderator graphite. The large particle is filler phase needle coke set in a finer grained binder phase. The dark areas are pores. This graphite is anistropic. | |
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Frame ID: G05 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 20x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features: Filler coke in nuclear graphite High Resolution Image (300 dpi) |
| Description: This sample is a fine-grained moderator graphite with filler phase of spherical particles of Gilsocarbon (a carbon produced by heat treating gilsonite which is a naturally occurring solid hydrocarbon). The spherical shape of the gilsocarbon and the fine-grained binder phase give this graphite isotropic properties. | |
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Frame ID: G06 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 50x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features: Fine-grained nuclear graphite High Resolution Image (300 dpi) |
| Description: This frame shows a fine-grained sleeve graphite with isotropic properties due to the fine size of the filler coke. | |
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Frame ID: G07 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 50x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features: Filler coke in graphite crucible High Resolution Image (300 dpi) |
| Description: The large fragment in the center of the frame is needle coke as a filler phase set in a coarse- grained binder phase. This sample is typical of graphite used in laboratory crucibles. | |
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Frame ID: G08 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 50x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features: Fine-grained graphite High Resolution Image (300 dpi) |
| Description: This frame shows a very fine-grained sleeve graphite with isotropic properties due to the fine size of the filler coke. | |
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Frame ID: G09 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 5x air Polarizer: Out Analyzer: Out Retarder Plate:Out Filter: None Important Features:Graphite anode paste High Resolution Image (300 dpi) |
| Description: This frame shows two pellets of green anode paste. Note the large petroleum coke fragment in the core of each pellet surrounded by finer coke particles and pitch. | |
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Frame ID: G10 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 10x air Polarizer: Out Analyzer: Out Retarder Plate:Out Filter: None Important Features: Green anode paste High Resolution Image (300 dpi) |
| Description: This frame shows two pellets of green anode paste that have coalesced. Again, note the large petroleum coke fragment in the core of each pellet surrounded by finer coke particles and pitch. | |
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Frame ID: G11 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 10x air Polarizer: Out Analyzer: Out Retarder Plate:Out Filter: None Important Features:Graphite anode paste High Resolution Image (300 dpi) |
| Description: This frame shows two pellets of green anode paste that have coalesced. The large particle at the lower right is petroleum coke and the large particle at the top left is a recycled fragment of used anode material. Note the differences between these two fragments. | |
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Frame ID: G12 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 10x air Polarizer: Out Analyzer: Out Retarder Plate:Out Filter: None Important Features: Green anode paste High Resolution Image (300 dpi) |
| Description: This frame shows an area of green anode paste at the left and some sponge coke at the right. | |
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Frame ID: G13 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 10x air Polarizer: Out Analyzer: Out Retarder Plate:Out Filter: None Important Features:Graphite anode paste High Resolution Image (300 dpi) |
| Description: This frame shows two pellets of green anode paste that have coalesced. There is a large particle of petroleum coke at the left and an anode butt fragment on the right. The zone in the middle has an excess of void space due to a lack of pitch. Note the elongate shape of the voids. This area is a zone of weakness. | |
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Frame ID: G14 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 10x air Polarizer: Out Analyzer: Out Retarder Plate:Out Filter: None Important Features: Green anode paste High Resolution Image (300 dpi) |
| Description: This frame shows two pellets of green anode paste that have coalesced. There are large particles of petroleum coke at the left and right. The zone in the middle has an appropriate amount of void space that indicates that this mix has been properly pitched. | |
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Frame ID: G15 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 10x air Polarizer: Out Analyzer: Out Retarder Plate:Out Filter: None Important Features:Graphite anode paste High Resolution Image (300 dpi) |
| Description: This frame shows a typical green anode paste with petroleum coke fragments of various sizes, but an excessive amount of pitch. | |
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Frame ID: G16 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 10x air Polarizer: In Analyzer: In Retarder Plate:Out Filter: None Important Features: Green anode paste High Resolution Image (300 dpi) |
| Description: This frame is the same as B7, but with the polarizer and Analyzer in. Note how the change in optical conditions enhances the identification of the various phases present. | |
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Frame ID: G17 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 10x air Polarizer: Out Analyzer: Out Retarder Plate:Out Filter: None Important Features: Baked graphite anode High Resolution Image (300 dpi) |
| Description: This frame shows a typical baked anode with petroleum coke fragments at the top and bottom and carbonized pitch and finer coke fragments in the middle. | |
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Frame ID: G18 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 10x air Polarizer: In Analyzer: In Retarder Plate:Out Filter: None Important Features: Baked graphite anode High Resolution Image (300 dpi) |
| Description: This frame is the same as C1, but with the polarizer and Analyzer in. Note how the change in optical conditions enhances the identification of the various phases present. | |
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Frame ID: G19 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 10x air Polarizer: Out Analyzer: Out Retarder Plate:Out Filter: None Important Features: Baked graphite anode High Resolution Image (300 dpi) |
| Description: This frame shows a typical baked anode with petroleum coke fragments but with an excess of pore space due to lack of pitch. | |
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Frame ID: G20 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 10x air Polarizer: In Analyzer: In Retarder Plate:Out Filter: None Important Features: Baked graphite anode High Resolution Image (300 dpi) |
| Description: This frame shows a typical baked anode with petroleum coke fragments but with an excess of pore space due to lack of pitch. Note how the change in optical conditions enhances the identification of the various phases present. | |
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Frame ID: G21 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 25x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features: Baked graphite anode High Resolution Image (300 dpi) |
| Description: This frame shows a typical baked anode with petroleum coke fragments (some needle coke) but with an excess of pore space due to lack of pitch. | |
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Frame ID: G22 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 25x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features: Baked graphite anode High Resolution Image (300 dpi) |
| Description: This frame shows a typical baked anode with petroleum coke fragments. Note the good bonding of the coke fragments on the left and the poor bonding on the right. | |
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Frame ID: G23 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 25x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features: Baked graphite anode High Resolution Image (300 dpi) |
| Description: This frame shows a typical baked anode with medium sized petroleum coke fragments. | |
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Frame ID: G24 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 25x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features: Baked graphite anode High Resolution Image (300 dpi) |
| Description: This frame shows a typical baked anode with petroleum coke fragments. Note the good bonding of the coke fragments. | |
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Frame ID: G25 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 25x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features: Baked graphite electrode High Resolution Image (300 dpi) |
| Description: This frame shows a typical baked electrode with petroleum coke fragments. | |
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Frame ID: G26 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 25x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features: Baked graphite electrode High Resolution Image (300 dpi) |
| Description: This frame shows a typical baked electrode with large fragments of needle coke. | |
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Frame ID: G27 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 25x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features: Baked graphite electrode High Resolution Image (300 dpi) |
| Description: This frame shows a typical baked electrode with petroleum coke fragments. Note the good bonding of the coke particles. | |
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Frame ID: G28 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 25x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features: Baked graphite electrode High Resolution Image (300 dpi) |
| Description: This frame shows a typical baked electrode with petroleum coke fragments. Note the good bonding of the coke particles. | |
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Frame ID: G29 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 25x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features: Baked graphite electrode High Resolution Image (300 dpi) |
| Description: This frame shows a baked electrode with petroleum coke fragments with excessive pore space due to insufficient binder pitch. | |
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Frame ID: G30 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 25x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features: Baked graphite electrode High Resolution Image (300 dpi) |
| Description: This frame shows a baked electrode with petroleum coke fragments at the top and a graphatized recycled electrode fragment at the bottom. | |
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Frame ID: G31 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 25x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features: Baked graphite electrode High Resolution Image (300 dpi) |
| Description: This frame shows a typical baked electrode with petroleum coke fragments (large pieces of needle coke). Note the parallel cracks along the long axis of the coke particles and the good bonding on the end of the same particles. | |
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Frame ID: G32 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 25x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features: Baked graphite electrode High Resolution Image (300 dpi) |
| Description: This frame shows a baked electrode with petroleum coke fragments that are well bonded. | |
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Frame ID: G33 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 25x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features:Graphatized graphite electrode High Resolution Image (300 dpi) |
| Description: This frame shows a typical graphatized electrode with petroleum coke fragments and anthracite (large pink fragment). The small yellow spots on the anthracite are vapor deposited carbon. | |
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Frame ID: G34 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 25x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features:Graphatized graphite electrode High Resolution Image (300 dpi) |
| Description: This frame shows a typical graphatized electrode with petroleum coke fragments and anthracite (green fragment). | |
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Frame ID: G35 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 25x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features:Graphatized graphite electrode High Resolution Image (300 dpi) |
| Description: This frame shows a typical graphatized electrode with petroleum coke fragments and anthracite (green fragment). | |
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Frame ID: G36 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 25x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features:Graphatized graphite electrode High Resolution Image (300 dpi) |
| Description: This frame shows a working face of a graphatized electrode. The needle-like crystals are silicon carbide and the hexagonal crystals are quartz. | |
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Frame ID: G37 Sample ID:Graphite Magnification:As given Illuminator:Vertical Objective: 25x oil Polarizer: In Analyzer: In Retarder Plate:In Filter: None Important Features:Graphatized graphite electrode High Resolution Image (300 dpi) |
| Description: This frame shows a graphatized electrode with anthracite (pink fragments). The yellow spots are vapor deposited carbon | |
عاشق شروع کردن هستم، هنر من جنگیدن برای آرزوهام هست؛ دنبال این هستم که درک درستی از زندگی پیدا کنم و ازش لذت ببرم برای همین بیشترین سرمایه‌گذاری رو روی خودم می‌کنم.
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