مواد اولیه، ورودی یا منابعی هستند که تولیدکنندگان برای تولید محصولات نهایی خود از آن‌ها بهره می‌برند؛ یا به بیان دیگر، این مواد، مانند شمش خام فلز یا مواد شیمیایی تصفیه نشده، فرآوری نشده‌اند و صنایع مختلف مواد در ...
To address these issues, this study proposes an improved method for detecting gangue and foreign matter in coal, utilizing a gangue selection robot with an enhanced YOLOv7 network model. The proposed approach entails the collection of coal, gangue, and foreign matter images using an industrial camera, which are then utilized …
When 30% gangue was used to substitute cement, the compressive strength of gangue-cement hardened paste at 28 days was 47.6 MPa, which was higher to 23.2 MPa than that of unirradiated gangue. View ...
Abstract. This chapter addresses the concept of gangue minerals, as an unavoidable company of ores, and comprises some introductory remarks to address the …
The gangue minerals of ore deposits formed at high temperatures differ from those deposited at lower temperatures. The principal ones are as follows: hydrothermal: apatite, garnet, mica, quartz, topaz, tourmaline ; epithermal: adularia, alunite, calcite, chalcedony, fluorite, opal, quartz. Ore in huge tonnages is mined and treated ...
In the early stage of gangue backfilling, beam structure damage directly occurs at the roof, and the layer is separated from the overlying rock. As the working face advances, the crack arch of the ...
The Influence of Gangue Particle size and Gangue Feeding Rate on the Suspended Bu er's Spring | 645 The following formula could be further obtained. D < (12321 / v ) 1 . 399 (7)
A. E. L. MLAKI ET AL.317 2. Experimental . 2.1. Materials . a) Agglomerates . Agglomerate samples were prior formed using castor oil as liquid hydrophobic phase and coal of particle size
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Définition de GANGUE. : Mot emprunté de l'Allemand. Roche à laquelle un métal minéral est attaché dans le sein de la terre. On dit : Une mine avec sa gangue. Un métal joint à sa gangue…
English Translation of "GANGUE" | The official Collins French-English Dictionary online. Over 100,000 English translations of French words and phrases.
Rib spalling is one of the main factors restricting the safe and efficient production of the fully mechanized mining face in gangue-bearing coal seams, and the gangue has significant influence on the occurrence of rib spalling. In this study, the instability process and mechanical mechanism of rib spalling in gangue-bearing coal …
Cette notion de gangue est, en fait, assez floue, car elle est étroitement subordonnée aux besoins de l'économie et à l'avance de la technologie ; ainsi, des minéraux actuellement sans valeur peuvent donner lieu à une exploitation rentable dans un avenir proche. D'autres minéraux, comme la fluorine, sont ici considérés comme gangue et ...
معنی gangue - معانی، کاربردها، تحلیل، بررسی تخصصی، جمله های نمونه، مترادف ها و متضادها و ... در دیکشنری آبادیس - برای مشاهده کلیک کنید
Coal gangue is a kind of industrial solid waste with serious ecological and environmental implications. Producing concrete with coal gangue aggregate is one of the green sustainable development requirements. This paper reviews the properties and preparation methods of Chinese gangue aggregate, studies the influence of gangue …
Keywords Coal gangue · Microbial community · Carbon source · Microbial remediation · Acid pollution Background Coal gangue accounts for approximately 10~30% of raw coal production and is solid waste generated during coal mining, washing, and processing (Hu et al. 2005). Acidication of coal gangue during storage releases many poisonous and
Emprunté de l' allemand Gang, « chemin », puis « filon ». 1. Enveloppe pierreuse ou terreuse d'un métal natif ou d'une gemme. La gangue d'un diamant. 2. biologie. Enveloppe conjonctive qui revêt certains organes. 3. pathologie. Tissu scléreux qui enveloppe un organe, un élément anatomique.
1. Introduction. The accumulation of coal gangue (gangue) has wasted lots of land resources [1], and the harmful components in gangue will migrate into soil after rain-washed [2].Moreover, gangue also encounters a serious spontaneous combustion problem which always resulting in a large amount of harmful gas emission [3, 4].Nowdays, the …
Gangue-based backfill cementitious materials (BCM) are widely applied due to their low CO2 footprint, while the application is restricted by gangue's low reactivity. In this study, dry chemical ...
Physical and chemical transformations of gangue materials during leaching of copper sulphides, and their influence on copper leaching kinetics T. Vargas F. Rojas +4 authors E. Widzyk-Capehart Materials Science, Chemistry
Based on the movement characteristics of overlying strata with gangue backfilling, the compression test of gangue is designed. The deformation characterristics of gangue is …
Abstract. Among coal mining-related wastes, coal gangue (CG) is the heterogeneous waste generated during the mineral processing or coal washing phase of …
Among coal mining-related wastes, coal gangue (CG) is the heterogeneous waste generated during the mineral processing or coal washing phase of coal mining. A thorough understanding of environmental concerns associated with the current model of CG utilization and potential future application is gaining paramount importance.
Synthesis and development of high-efficiency and low-cost adsorbents for treating of the wastewater containing heavy metal ions and/or dyes has been aroused worldwide attention in recent years. In this study, the coal gangue as the only supply of Si and Al was adopted to synthesize sodalite using hydrothermal method. Both the gangue …
The cemented coal gangue backfill (CGB) in coal mining is normally made of gangue (particle size of 0–15 mm), fly ash, cement, and water. In this study, the effects of the weight content (ranging from 20% to 60%) of fine gangue (0–5 mm) on the microscopic characteristics, resistivity, and compressive strength of CGB were investigated at 3 d ...
Research Key Highlights - Solutions containing NO 3-and Ca 2+ increased the depression of gangue as shown by lower gangue recoveries. - The concentrate grades were higher in solutions containing Ca 2+ and NO 3-compared to those which contained Na +, Cl −, and SO 4 2−. - Ca 2+ and NO 3-resulted in a less negative zeta potential compared to Na + …
Gangue. Gangue (n. f.) de l'allemand Gang, chemin ; mis figurativement pour filon : La gangue comprend généralement l'ensemble des roches et minéraux sans intérêt économique, qui entourent les minerais, ou les gemmes, dans leurs gisements. Les constituants de la gangue finiront sur la verse (ou halde ), et/ou dans les terrils.
Based on the oxide content of CG, CG can be divided into clay gangue (SiO 2 (40–70%), Al 2 O 3 (15–30%)), sandstone gangue (SiO 2 > 70%), aluminum gangue (Al 2 O 3 > …
Gangue. Gangue is the worthless substance that is left behind when minerals are processed. When minerals are collected, the ore that is wanted is found only in small amounts. Flotation is used to concentrate the ore. The ore floats while the gangue sinks to the bottom. Sometimes minerals thought of as gangue are later recovered and used.
Dictionnaire de l'Académie française, huitième édition (1932-1935) GANGUE. n. f. T. de Minéralogie. Substance pierreuse ou autre qui enveloppe les minéraux dans le sein de la terre. La gangue d'un diamant. Il se dit, par extension, en termes d' Anatomie, d'une Substance amorphe enveloppant un élément anatomique.
انواع مواد شیمیایی خطرناک. مواد شیمیایی که خطرناک هستند را می‌توان به چهار دسته کلی دسته‌بندی کرد: مواد خطرناکی که مستقیما می‌توانند با یا بدون واکنش شیمیایی قبلی باعث آسیب شوند. مواد حساس ...
The over-exploitation of resources caused by the increasing coal demand has resulted in a sharp increase in solid waste emissions mainly gangue, which has made the burden on the environment, economy, resources, and society of our country heavier. In order to achieve a balance between energy consumption and solid waste emission in …
This chapter discusses the methodology for characterisation and identification of the minerals defined and selected in Chap. 133 as common gangue minerals. As shown in the compilation presented (Table 134.1), the very low reflectance of most gangue minerals (either measured or reckoned by the Fresnel equation) distinguishes them …
To investigate the influence of gangue left in goafs on the low-temperature oxidation characteristics of coal, the variations of gas products and free radical …
In the context of extractive metallurgy, gangue minerals react and complex with lixiviants and targeted elements, and this not only results in the large consumption …
مواد شیمیایی مصنوعی، موادی هستند که توسط مردم ساخته شده‌اند. آن‌ها اغلب به عنوان مواد سنتزی نامیده می‌شوند. مواد شیمیایی طبیعی آنهایی هستند که در طبیعت یافت می‌شوند (تولید شده توسط گیاهان ...
In order to effectively utilize coal gangue and its calorific value (4180–12,540 kJ/kg), coal gangue was converted into energy-saved cement by activating at 800 °C with an integrated thermal ...
Cette gangue, qui appauvrit le minerai et que l'on cherche à rejeter, présente des formes très variées : elle peut être volatile ou solide, exprimée ou combinée, ferrifère ou stérile. L'utilisation du minerai de fer dépend étroitement de ces aspects. BARYTINE. Écrit par Yannick LOZAC'H; 1 677 mots; Elle est fréquente comme minéral de
Among the techniques for converting stacked coal gangue to reusable material, one of the most effective ways is to use coal gangue as a coarse aggregate in green concrete productions. The physical …
مواد شیمیایی خاص [۱] (به انگلیسی: Speciality chemicals) (همچنین مواد شیمیایی ویژه یا مواد شیمیایی اثرگذار نامیده می‌شود) محصولات شیمیایی خاصی هستند که طیف گسترده‌ای از اثرات را ارائه می‌دهند که بسیاری ...
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