Research on Intellectualized Location of Coal Gangue Logistics Nodes

The coal gangue logistics system location nodes model is further established and the objective function is defined to identify the vital nodes based on the highest efficiency and the lowest cost

Effects of Coal Gangue Hill on Heavy Metal Pollution Characteristics

in order to understand the heavy metal pollution of a coal gangue hill in qufu city on the surrounding farmland soil and its effect on soil enzyme activity the contents of seven heavy metal elements cr pb hg zn cu ni and cd as well as the activities of catalase dehydrogenase sucrase invertase and urease were determined by sampling …

Coal Energy Information Administration EIA

Upcoming Releases Release days may change on weeks with Federal holidays Coal Markets 5 00 ET Monday Formerly Weekly NYMEX Coal Futures and Coal News Markets Weekly Coal Production 5 00 ET Thursday See all upcoming

Effect of Concentration and Suspension Agent HPMC on Hindawi

Cemented coal gangue fly ash backfill CGFB mixtures are utilized as the filling materials for backfilling the underground openings in coal mines The freshly prepared CGFB slurries are commonly transported into the gobs through a pipeline The mixture ratio of slurry concentration and suspending agent HPMC plays an essential role in transporting the slurry to goaf smoothly and efficiently

Coal Gangue Crusher Coal Gangue Production Line Dingli crusher

As a lower carbon content and harder material than coal material coal gangue is a dark gray stone produced with coal steam in the process of making coal It includes excavation of waste rock in roadway the waste rock produced from the roof floor and sandwich during the excavation and waste rock selected in the process of washing coal

Encyclopia of Geology PDF Sediment Deposition Geology

The variety of kerogen termed coal is of course a very important source of energy Less conspicu ously although equally important kerogen occurs in varying amounts in mudstones Originating as plant and animal detritus this disseminated kerogen is the mother of petroleum Figure 11

Remote Sensing Free Full Text Remote Sensing Monitoring of

After the regreening of the open pit mine dump vegetation usually needs to be managed and protected manually for several years before it reaches stability Due to the spontaneous combustion of coal gangue surface collapse and other reasons secondary damage may occur at any time Regreening monitoring plays a vital role in the restoration and reconstruction of the mining ecosystem and can

Using Chinese Coal Gangue as an Ecological Aggregate and Its

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 studi …

coalbed methane Translation into Chinese examples English Reverso

Article 55 Where a power grid enterprise in violation of the provisions of this Law refuses to buy the electricity which is generated by enterprises through the use of residual heat and residual pressure coalbed methane and fuels of low heat value such as gangue slurry and garbage the electricity regulatory authority of the State shall order it to rectify within a time limit if losses

Synthesis and characterization of low carbon cementitious

The results show that metakaolin was formed by the dehydroxylation of kaolinite in the coal gangue during calcination and the reaction was based on the Z L T three dimensional diffusion mechanism with an activation energy of kJ/mol Metakaolin with dissolution rates of %% and %% of activated alumina and silica

The comprehensive utilization of the coal gangue ResearchGate

The soil of three soil depths 0 10 10 20 and 20 30 cm from natural land and three waste dumps with primary succession ages of 5 R5 10 R10 and 20 R20 years in the Heidaigou

Coal Gangue Crusher/ Coal Gangue Crushing Plant Fote Machinery

Coal gangue crusher is widely used in the chemical electrical aluminum plant mining building materials beneficiation and other fields for crushing materials such as construction waste slag shale coal slag and coal gangue It is necessary to choose the index matching machine according to your production capacity feeding size and

Remote Sensing Free Full Text Using UAV and Field MDPI

Gangue piles are severe problem in coal producing countries The stock of coal gangue in China alone has reached 5 Gt with an average annual increase of Gt [ 1 ] The large accumulation of coal gangue occupies a large amount of land and causes serious environmental pollution

An efficient method for recognition of coal/gangue with thermal imaging

ABSTRACT The identification of coal/gangue plays an important role in improving resource utilization and reducing environmental pollution Since surface character of coal and gangue is closed to each other it is difficult to obtain satisfactory recognition results by traditional visible image analysis methods

COMPLEXE GANGUE MINERAI [1 record] TERMIUM Plus — Search TERMIUM Plus

Note The language you choose must correspond to the language of the term you have entered For example if you enter a French term choose an option under French

Preparation of coal gangue ceramsite high strength concrete and

Coal gangue CG is a type of industrial solid waste produced by the process of coal excavation and separation 1 2 3 Generally one ton of CG is discarded for every 10 tons of produced coal 4 5

Influencing of soil Mercury and Methyl Mercury by Coal Mining Activities

Strong squanders for example fly debris and coal gangue created in the drawn out coal mining and coal burning cycle are heaped on the dirt surface which not just possesses soil assets and prompts the nonstop decrease of the accessible arable land yet additionally builds the contamination hazard of weighty metals like Hg in the climate

Release characteristics of heavy metals in high sulfur coal gangue

Coal gangue HS CG is the dark gray rock produced during coal mining and washing process and its production is about 10% 15% of coal mining which depends on the geology and mining conditions Zhu et al 2024 Bai et al 2024 Due to the utilization of coal resources in the world lead to the accumulation of HS CG also increased year by year Zhang et al 2024

Coal Gangue Sorting System—HXS Intelligent Dry Type Separator News

Coal gangue identification flowchart Technical features ※ Wide processing size range It can handle 30 600mm raw coal The upper limit of separation is 600mm and the lower limit is 30mm ※ High separation accuracy The rate of gangue removing is over 95% the rate of coal in gangue is less than 2% and the separation effect is significant

Effects of Underground Coal Mining on Soil Spatial Water Content

The impact of coal mining subsidence on surface ecology involves the influence of several ecological elements such as water soil and vegetation which is systematic and complex Given the unclear understanding of the synergistic change patterns of the water soil vegetation ecological elements in the influence of coal mining in the west this paper investigates the impact of coal mining

Study on condition analysis and temperature prediction of coal

We analyzed the oxygen absorption in the pores of coal and the tendency of its own water content for spontaneous combustion of coal The model experiment was carried out and the correlation between different gas concentrations and coal temperature produced during spontaneous combustion of mixed coal samples was analyzed

Coal gangue cement synthesized at low temperature

： The production process flow and technical parameters of coal gangue cement synthesized at low temperature are mineral forming mechanism and main properties are studied and its performance features are study proves that the cement grade of coal gangue cement synthesized at low temperature can reach normal Portland cement grade and it has character of

Physicochemical Problems of Mineral Processing nr 41 2024

Formation of hydrogen peroxide H2O2 an oxidizing agent stronger than oxygen by sulphide minerals during grinding was investigated It was found that pyrite FeS2 chalcopyrite CuFeS2 sphalerite Zn Fe S and galena PbS which are the most abundant sulphide minerals on Earth generated H2O2 in pulp liquid during wet grinding in the presence or devoid of dissolved oxygen in water and

The results showed the following 1 Optimized formulation could be achieved at coal gangue powder slag fly ash ratio of 5 4 1 M sodium silicate modulus % sodium silicate and 5% Na 2 O The LCGGM possesses clean production high fluidity fast setting low bleeding rate high compressive strength and seepage pressure providing

Micromachines Free Full Text YOLOv4 Tiny Based Coal Gangue Image

Nowadays most of the deep learning coal gangue identification methods need to be performed on high performance CPU or GPU hardware devices which are inconvenient to use in complex underground coal mine environments due to their high power consumption huge size and significant heat generation Aiming to resolve these problems this paper proposes a coal gangue identification method based on

Molecules Free Full Text Synthesis of Porous Material from Coal

Coal gasification technology is an important part of the clean and efficient utilization of coal resources The residue produced in the process of coal gasification includes fine slag GFS and coarse slag GCS GCS is produced in the slag discharge mouth of the gasifier GFS is mainly produced in the dust removal device of syngas [ 3 4 ]

Mixture Ratio Design Optimization of Coal Gangue Based Hindawi

A green concrete new type of coal gangue based geopolymer concrete was prepared Coal gangue geopolymer concrete contains many mineral admixtures and alkaline activators the concrete mixture ratio design has always been a complex problem The framework of the mix design optimization by the proposed method is established in this work The paper aims to minimize the economic cost under the

Electromagnetic wave forward modeling of coal gangue mixed model in top

The automatic control of top coal caving is of great significance to realize intelligent coal mining In the process of top coal caving a coal gangue mixed area containing coal gangue and air is formed at the tail beam of the hydraulic support which has different electromagnetic parameters different volumes and different shapes

Effects of Coal Gangue Hill on Heavy Metal Pollution Characteristics

In order to understand the heavy metal pollution of a coal gangue hill in Qufu city on the surrounding farmland soil and its effect on soil enzyme activity the contents of seven heavy metal elements Cr Pb Hg Zn Cu Ni and Cd as well as the activities of catalase dehydrogenase sucrase invertase and urease were determined by sampling points around the coal gangue hill

Coal gangue interface detection based on Hilbert spectral analysis of

Coal gangue interface detection during top coal caving mining is a challenging problem This paper proposes a new empirical approach to detect the coal gangue interface based on vibration signal analysis of the tail boom support of the longwall mining machine