The latest technology of coal gangue utilization

The latest technology of coal gangue utilization

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

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

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 …

Experimental Investigation of Particle Size Alteration and the

This study examines the particle size and distribution of the main chemical components of gangue during the crushing process Coal mine gangue was chosen DOAJ is a unique and extensive index of diverse open access journals from around the world driven by a growing community committed to ensuring quality content is freely available

Synthesis and mechanical properties of mullite ceramics with coal

The International Journal of Applied Ceramic Technology publishes cutting edge applied research and development work focused on commercialization of engineered ceramics products and processes Abstract With coal gangue and high alumina refractory solid wastes as raw materials needle like mullite powder with an average diameter of about 1 μm

Discussions of Resource Utilization of Coal Gangue

The ways of using coal gangue in electricity generation chemical utilization and building material production are introduced and national coal gangue utilization status and development trend is analyzed in this paper Pointing out the main problems in present utilization of coal gangues suggestions on coal gangue resource utilization are given that provide reference for eliminating coal

Sustainability Free Full Text Utilization of Coal Gangue Aggregate

As a massive solid waste the high value added utilization of coal gangue has received more and more attention in China This study focuses on the utilization of coal gangue aggregate in railway engineering for coal transportation passage Coal gangue aggregate was employed as high grade railway subgrade filler andprepared concrete for roadbed drainage named coal gangue roadbed protecting

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

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

The Current Situation of Comprehensive Utilization of Coal Gangue in China

Coal gangue is a kind of solid waste with a low calorific value produced in the process of coal mining and washing According to statistics by the end of 2024 China s accumulated amount of

Eco friendly treatment of coal gangue for its utilization as

CG is a residue produced from the processing of coal mining and coal washing It has been estimated that CG accounts for about 10 15% of raw coal production Qureshi et al 2024 A large amount of CG was piled in wastelands over the last decades due to the rapid growth of the mining industry in China

Utilization of coal gangue as coarse aggregates in structural concrete

The mechanical behavior of coal gangue concrete is reduced by increasing the coal gangue replacement ratio A model is proposed for predicting the compressive strength of coal gangue concrete Some constants are proposed based on test results to predict the splitting tensile strength and elastic modulus of coal gangue concrete

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

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

Dri 121117215636 Phpapp02 PDF PDF Coal Nature

Free download as PDF File pdf Text File txt or view presentation slides online

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

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

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 …

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

Analysis of the vibration characteristics of tail beam of the hydraulic

To study the influence of the gangue content of coal gangue particles on the vibration signal of the tail beam under sliding condition this paper combines three dimensional 3D laser scanning technology with the finite element method establishes a finite element model of the real shape of coal gangue particles and the hydraulic support in top coal caving in LS DYNA analyzes the influence of

Using Chinese Coal Gangue as an Ecological Aggregate and Its

Affiliations 1 School of Civil Engineering and Communication North China University of Water Resources and Electric Power Zhengzhou 450045 China 2 State Key Laboratory of Eco Hydraulics in Northwest Arid Region Xi an University of Technology Xi an 710048 China PMID 35806620 PMCID PMC9267344 DOI /ma15134495

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

YOLOv5

The recognition precision of small target coal and gangue is low In order to solve this problem an improved YOLOv5 model is proposed and coal and gangue recognition is realized based on that model Data enhancement is carried out on the collected coal and gangue data to enrich the data set and improve the data utilization rate

Review of Coal Gangue Characteristics and Ecological Restoration

The action mechanism advantages and disadvantages and application scope of various ecological restoration technologies involved in the two modes are listed compared and analyzed which provides scientific reference for the restoration and treatment of other similar geological environments Export citation and abstract BibTeX RIS

Effects of Treated Cow Dung Addition on the Strength of Hindawi

It is of particular interest to use biomass as an alternative source of fuel in direct reduction ironmaking to ease the current reliance on fossil fuel energy The influence of cow dung addition on the strength of carbon bearing iron ore pellets composed of cow dung iron ore anthracite and bentonite was investigated the quality of green and dry pellet was evaluated based on FTIR analysis

Volume Table of Contents

Research on derivative mechanism for flying gangue under the different mining height of virtual simulation scientific experiment system for air conditioning pipe network based on virtual reality technology Qiang Luo Juncheng Yu

Mn/Ce Oxides Decorated Polyphenylene Sulfide Needle Punching Fibrous

Presently ammonia selective catalytic reduction NH 3 SCR technology is recognized as the most effective way to realize the removal of NO x existing in the fuel burning exhaust gas [ 8 ] NH 3 SCR technology takes NH 3 as the reducing agent to reduce toxic NO x to non toxic N 2 and H 2 O under the action of a catalyst [ 9 ]

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

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

Frontiers Recognition method of coal and gangue based on

With continuous development of image processing and artificial intelligence AI the visual separation technology with image recognition as the core is considered to be a potential separation method for coal and gangue Dou et al 2024 However there are certain limitations in using traditional visual methods to separate coal and gangue

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