The latest technology of coal gangue utilization

The latest technology of coal gangue utilization

Study on Calcination Catalysis and the Desilication Mechanism for Coal

Coal gangue is a solid waste discharged during coal mining which not only occupies large land resources but also brings about certain risks to the environment The alumina and silica minerals in coal gangue are the major resources and difficult to separate from each other which hinders the resource utilization of coal gangue

Buy artificial intelligence sorting machine China artificial

Beneficiation process and technology of various iron ores How phosphate ore is enriched by beneficiation How to remove iron from potassium feldspar and the beneficiation process and flow Industrial solid waste coal gangue intelligent sorting change it into treasure Photoelectric sorting help to enrich gold grade enhance economic mining

Modiﬁcation of waste coal gangue and its application in the removal of

We developed a new calcination method to convert coal gangue CG a common waste generated from coal production process into a modified form which could be used as an adsorbent to remove Mn 2 from aqueous solution Sodium tetraborate Na2B4O7·10H2O was added into the CG calcination process as …

The Sustainable Utilization of Coal Gangue in ResearchGate

The comprehensive utilization of coal gangue is a severe problem that many countries and regions confront Extracting strategic metals from coal gangue and adequately treating the residue

Study on coal and gangue recognition method based on the combination of

The comprehensive recognition accuracy of coal and gangue with particle size of 5 100 mm reached % Consequently this paper provides a new technical approach for coal and gangue identification KEYWORDS X ray transmission X ray diffraction coal and gangue identification small particle size PSO SVM Disclosure statement

A data expansion strategy for improving coal gangue detection

With the development of machine vision and deep learning the intelligent visual based coal gangue separation technology has gradually attracted the attention of enterprises and researchers Coal gangue detection models based on deep learning rely on a large number of CG 1 images for training which is time consuming and laborious to acquire

Preparation and decarburization characteristics of SiO2 Al2O3 composite

The more K 2 CO 3 is loaded the less the corresponding active sites on the surface of the carrier When the loading is 30% the maximum CO 2 adsorption capacity is mmol·g 1 Excess K 2 CO 3 will plug the pore structure destroy the diffusion of CO 2 and reduce the diffusion and utilization efficiency

coal gangue Latest Research Papers ScienceGate

Spontaneous Combustion Of Coal In order to solve the problem of the spontaneous combustion of coal gangue a coal gangue fire extinguishing material of gel foam was developed The foaming agent was screened by the Waring blender method with varying foam amounts and the superabsorbent foam stabilizer was synthesized by free radical polymerization

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

Experimental Investigation of the Effects of the Gangue Hindawi

to be specific large gangues were artificially crushed to the fragments with a size range of 200 300 mm so that the gangue fragments can smoothly pass through the inlet of the crusher next small gangues passed through the square hole sieves for step by step screening so as to obtain small gangues with different size ranges 0 5 mm 5 10 mm …

Environmentally friendly utilization of coal gangue as aggregates for

this proposed technology enjoys three benefits 1 cga shotcrete used for the construction of coal mine tunnel underground is free from freeze thaw threatens due to the relatively stable temperatures in tunnels 2 the durability issue of cga shotcrete is concerned less than traditional concrete since that its service life on working face is …

Study on The Preparation Technology of Poly Silicate Aluminum Ferric

[1] Sun C B Zhang J S and Cao Z 2024 Resource Utilization ways of coal gangue and its development Multipurpose Util Miner Resour 12 1 12 Google Scholar [2] Lin M 2024 Comprehensive utilization of coal gangue Shanghai Build Mater 4 29 31 Google Scholar [3] Wang R G and Wang L M 2024 Preparation of polymeric aluminum chloride from coal gangue and its application on wastewater treatment

Hierarchical separating and grading method of coal gangue

The present disclosure provides a hierarchical separating and grading method of coal gangue and belongs to the technical field of coal gangue treatment and resource utilization According to differences in the composition and properties of coal gangue especially differences in Hardgrove grindability index HGI the present disclosure performs hierarchical crushing and screening to separate

Krishna Mohan Dwivedi Quality Assurance Quality Control LinkedIn

The new type cement grinding units adopt pre grinding technology The cement grinding units not only reduce the particles of feeding materials but also help to produce cracks and flaws

Utilization of coal gangue for preparing high‐silica porous materials

However the preparation of porous materials with coal gangue is an effective method of resource utilization Mesoporous silica and meso microporous ZSM 5 were prepared with alkali melting activation acid leaching and hydrothermal synthesis respectively

Utilization of coal gangue as coarse aggregates in structural concrete

Most of the related researches focus on the material properties of coal gangue concrete It is expected that the performance of concrete filled steel tubular stubs with CGC is better than that of reinforced concrete stubs with CGC In this paper coal gangue is utilized as a replacement of coarse aggregates in different types of structural stubs

A New Comprehensive Utilization Method for Coal Gangue Preparing Alite

A New Comprehensive Utilization Method for Coal Gangue Preparing Alite Sulphoaluminate Cement Abstract Coal gangue is a kind of solid waste which is discharged from coal mining and coal washing Dumped gangues do not only take a large land occupation but also pollute air and water

Discussions of Resource Utilization of Coal Gangue

Materials Science Engineering 2024 ABSTRACT Utilizing the difference in hardness coal and gangue can be separated by the impact crush technology for utilization underground The influence of hardness and impact velocity on the… 17 References SHOWING 1 4 OF 4 REFERENCES Problems and Suggestions on Coal gangue Utilization [J Coal Engineering 2024

CN103861725A Sorting and treatment process for coal gangue all

The invention relates to a sorting and treatment process for coal gangue all resource utilization The sorting and treatment process for coal gangue all resource utilization comprises coal and pyrite gravity sorting and coal and ash grinding flotation and specifically comprises the following steps primarily crushing raw ores and performing sorting by using a trapezoidal washbox I to obtain

Assessment of the External Costs of Life Cycle of Coal The Case Study

Coal mining activities produce a large amount of solid waste most of which is gangue The ratio of gangue to coal during coal extraction is about 13% using current technology The total coal production in SW China was million tons in 2024 The shadow price of gangue was USD /t

What is the new coal gangue grinding mill Quora

It has the advantages of increasing production and reducing consumption scientific principle high grinding efficiency small floor area low noise simple maintenance and more wear resistance It is a special equipment for solid waste projects such as coal gangue water slag and slag Its advantages are as follows Ful Continue Reading Edith Lee

Research on the fine identification of coal types and gangue based on X

Therefore this paper takes the main coal types including one third coking coal gas coal and gangue in Huainan coalfield as the research object and proposes a method to identify coal types and gangue The ADXRD patterns and EDXRD patterns of the samples were obtained through X ray diffractometer and EDXRD test platform respectively

coal gangue fired brick production technology

Gangue Brick Making Machine technology and large coal gangue utilization is the production of building materials It includes using gangue as sintered brick Gangue Utilization Methods Inquiry new large coal gangue brick tunnel kiln production line of about 50 70 For gangue brick cogeneration technology

PDF A Novel Devolatilization Technique of Pre reduction of Iron Ore

A Novel Devolatilization Technique of Pre reduction of Iron Ore Using Lean Grade Coal × Close Log In Log in with Facebook Log in with Google or Email Password Remember me on this computer or reset password Enter the email address you signed up with and we ll email you a reset link

Research of Comprehensive Utilization of Coal Gangue

mostly by different processing methods the reuse of the coal gangue is used as input material for traditional constructing material cement and new building material such as

The Sustainable Utilization of Coal Gangue in Geotechnical and

Abstract 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

Effects of Mineral Additives on Biochar Formation Carbon Retention

Biochar is being recognized as a promising tool for long term carbon sequestration and biochar with high carbon retention and strong stability is supposed to be explored for that purpose In this study three minerals including kaolin calcite CaCO3 and calcium dihydrogen phosphate [Ca H2PO4 2] were added to rice straw feedstock at the ratio of 20% w/w for biochar formation through

｜《》20204～6

LI Zhen WANG Junzhang SHEN Liming et of the physical and chemical composition of coal gangue on its resource utilization[J] Clean Coal Technology 2024 26 4 34 44 5 ：；；；；

Experimental study on the physico mechanical properties and

It can also reduce the waste of coal gangue resources realize the comprehensive utilization of coal gangue and promote the effective treatment process of coal gangue This article prepared the coal gangue foam concrete by mixing cement CG FA and foam The performance of coal gangue foam concrete and its influencing mechanism was studied

Utilization of coal gangue for the production of brick

Coal gangue an industrial solid waste discarded from coal mining and processing was used as the sole raw material to prepare brick The coal gangue was crushed homogenized milled and then pressed into green compacts The dried compacts were sintered at different temperatures for 2 h

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