Fine-grained object detection method using attention ...
Sorting gangue from raw coal is an essential concern in coal mining engineering. Prior to separation, the location and shape of the gangue should be extracted from the raw coal image.
Thermogravimetric analysis of the co-combustion of coal ...
respectively. Co-combustion can reduce the activation energy of coal gangue during the ini-tial and end stages. Therefore, co-combustion is helpful to improve the problems of low calo-rific value and refractory burnout of coal gangue. Introduction Coal gangue (CG) is a common industrial solid waste. An economical, reliable, and compre-
coal mining | Definition, History, Types, & Facts | Britannica
coal mining, extraction of coal deposits from the surface of Earth and from underground.. Coal is the most abundant fossil fuel on Earth. Its predominant use has always been for producing heat energy. It was the basic energy source that fueled the Industrial Revolution of the 18th and 19th centuries, and the industrial growth of that era in turn supported the large-scale exploitation of coal ...
coal gangue - Polish translation – Linguee
The gangue on surface (constituting about 20 to 25% of the extracted coal mass), old workings, and hydrogeological [...] conditions in the mining areas considerably change the natural landscape. mining.archives.pl
Environmental impact of gangue minerals in mine tailings
In mining, gangue (/ ɡ æ ŋ /) is the commercially worthless material that surrounds, or is closely mixed with, a wanted mineral in an ore deposit.It is thus distinct from overburden, which is the waste rock or materials overlying an ore or mineral body that are displaced during mining without being processed, and from tailings, which is rock already stripped of valuable minerals.
What Is Coal Gangue In Usa - arbeitsvertrag-stuttgart.de
Coal Gangue Dryer Coal Gangue Rotary Dryer Coal. Coal Gangue Dryer . Brief introduction of Coal gangue dryer. Coal gangue dryer is a type of industrial dryer employed to reduce or minimie the liquid moisture content of the material it is handling by bringing it into direct contact with a …
Gangue - Wikipedia
tailings: Residual gamma-radiation-rich, sandy waste remaining after extraction of uranium from mined ore.
Coal-Gangue Interface Detection Based on Ensemble ...
Abstract: To realize the unmanned automation of the full mechanized caving, the bottleneck problem of coal-gangue interface detection in top coal caving must be solved first. Targeting coal-gangue interface detection on fully mechanized mining face, an alternative scheme to detect coal-gangue interface based on vibration signal analysis of the tail boom support of the longwall mining …
Glossary of Mining Terms - SEC
Anthracite - A hard, black coal containing a high percentage of fixed carbon and a low percentage of volatile matter. Anticline - An arch or fold in layers of rock shaped like the crest of a wave. Apex - The top or terminal edge of a vein on surface or its nearest point to the surface. Ash - The inorganic residue remaining after ignition of coal.
What are the types of coal? - USGS
The biggest coal deposit by volume is the Powder River Basin in Wyoming and Montana, which the USGS estimated to have 1.07 trillion short tons of in-place coal resources, 162 billion short tons of recoverable coal resources, and 25 billion short tons of economic coal resources (also called reserves) in …
Gangue - definition of gangue by The Free Dictionary
Define gangue. gangue synonyms, gangue pronunciation, gangue translation, English dictionary definition of gangue. also gang n. Worthless rock or other material in which valuable minerals are found. American Heritage® Dictionary of the English Language, Fifth Edition....
On-Site Measurement on Compaction Characteristics of Coal ...
Gangue is the main backfilling material in solid backfilling mining, and its compaction characteristics determine the overburden control effect and surface subsidence. Under the action of compaction force and overburden pressure, the gangue will be broken, rotated and occluded, resulting in different compaction characteristics of gangue in the field and laboratory.
Gangue | Article about gangue by The Free Dictionary
The gangue backfilling GER (Figure 1 (b)) is an innovative mining technology based on gob-backfilled adaptive to multiple complex mining geological conditions without a coal pillar [1]. An Experimental Investigation on the Mechanical Properties of Gangue Concrete as a Roadside Support Body Material for Backfilling Gob-Side Entry Retaining.
Slag - definition of slag by The Free Dictionary
Define slag. slag synonyms, slag pronunciation, slag translation, English dictionary definition of slag. n. 1. ... cinder the fused material formed during the smelting or refining of metals by combining the flux with gangue, impurities in the metal, etc. It usually consists of a mixture of silicates with calcium, phosphorus, sulphur, etc ...
gangue | Encyclopedia
gangue That portion of an ore deposit which is of no commercial value but which cannot be avoided during mining; it is removed during processing as waste. Source for information on gangue: A Dictionary of Earth Sciences dictionary.
Key Aquiclude Strata Reconstruction and Fluid–Solid ...
Coal gangue, a significant waste product of coal processing and washing, accounts for about 10 ~ 25% of raw coal production (Wang et al. 2012). Over 50 billion t of coal gangue has accumulated in about 2600 gangue dumps in China: the dumps cover an area of 15,000 hm 2 with an annual growth rate of about 3.0 ~ 3.5 billion t/a.
Gangue | definition of gangue by Medical dictionary
tailings: Residual gamma-radiation-rich, sandy waste remaining after extraction of uranium from mined ore.
Micro‐pore structure characteristics and macro‐mechanical ...
1 Introduction. Coal gangue is the solid waste generated in the coal mine production process, including excavation gangue generated during rock roadway excavation, gangue extracted from rock interlayer in the roof, floor, and coal seam during coal mining, and wash gangue discharged from coal preparation plant [].The gangue produced in coal mining and washing is generally called …
Gangue financial definition of gangue
The coal production of China now ranks top in the world, and so there is the biggest coal gangue yield. Hydrothermal synthesis of SBA-15 using sodium silicate derived from coal gangue ores are complex assemblages of mineral phases, some being economically valuable and others being considered as uneconomic, gangue material or even as penalties.
Introduction to Mineral Processing or Beneficiation
Most rock deposits contain metals or minerals, but when the concentration of valuable minerals or metals is too low to justify mining, it is considered a waste or gangue material. Within an ore body, valuable minerals are surrounded by gangue and it is the primary function of mineral processing, to liberate and concentrate those valuable minerals.
gangue_gangue - iChaCha
In mining, gangue (pronounced "gang") is the commercially worthless material that surrounds, or is closely mixed with, a wanted mineral in an ore deposit. It is thus distinct from overburden, which is the waste rock or materials overlying an ore or mineral body …
waste rock (mining), gangue (worthless minerals mixed in ...
Translation for: 'waste rock (mining), gangue (worthless minerals mixed in with coal or ore)' in English->Chinese dictionary. Search over 14 million words and phrases in more than 490 language pairs.
what are ore and gangue mineral in coal mine
what are ore and gangue mineral in coal mine. Gangue - Wikipedia. In mining, gangue (/ ɡ æ ŋ /) is the commercially worthless material that surrounds, or is closely mixed with, a wanted mineral in an ore deposit.It is thus distinct from overburden, which is the waste rock or materials overlying an ore or mineral body that are displaced during mining without being processed, and from ...
Identification Method of Coal and Coal Gangue Based on ...
To solve the problems of the difficult feature extraction, poor feature credibility and low recognition accuracy of coal and gangue, this paper utilizes the difference in the dielectric properties of coal and gangue and in combination with a support vector machine (SVM) to propose a recognition method based on the dielectric characteristics of coal and gangue. The influence rule of the edge ...
Controlling water temperature for efficient coal/gangue ...
Coal and gangue (black-gray solid wastes in coal) recognition is vital to avoid waste of resources and pollution of the environment during the coal production. Considering their color/temperature is very close to each other, the traditional visible image and infrared image analyzing method is hard to obtain satisfied recognition efficiency.
black coal gangue australia
Black Coal Gangue Australia caesarmachineryblack coal gangue australia knowledgecloudin. The effect of Na2CO3 additive on the activation of coal gangue for alumina extraction was investigated The discussion on the action mechanisms was performed by Coal Mineral Fact Sheets Australian Mines Atlas of shale siltstone or sandstone dirt bands or partings constitute a coal seam charcoal ...
What is galvanization? - Chemistry Question
Definition. Galvanization is the process of applying a protective layer of zinc on a metal. It is a very common method of preventing the rusting of iron. This can be done by dipping the metal to be protected in hot, molten zinc or by the process of electroplating.
gangue_gangue_gangue_
35. coal gangue -- -- - . 36. dolomitic gangue -- -- - [] 37. (4) Storing coal, coal gangue, coal cinder, coal ash, sandstone, lime soil or other materials in densely inhabited areas without taking any measures for fire and dust prevention.
Mining Terms - kau
Gangue: Non-valuable minerals which are associated with the valuable minerals. The ore is made up of both of these. The ore is made up of both of these. Hanging Wall: The wall rock on the upper side of an inclined vein or bedded deposit.
