Comprehensive utilization technology of coal gangue

Comprehensive utilization technology of coal gangue

Preparation of SiC from acid‐leached coal gangue by ACerS

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 For the comprehensive utilization of coal gangue acid leached coal gangue was used as silicon source and part of carbon source low ash

Extraction of alumina from alumina rich coal gangue by a hydro chemical

For the present large scale utilization technologies of coal gangue are mainly characterized by low added value such as making cement and bricks power generation and paving roads [ 9 10 ] To realize high added value utilization of coal gangue numerous methods have been extensively studied [ 11 17 ]

Wuhai Xiangyi Coal Gangue Comprehensive Utilization Co Ltd

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Industrial development and prospect about comprehensive utilization of

China has made great progress in comprehensive utilization of coal gangue in the latest 40 years since the 1960—1970 s Circulating fluidized bed CFD power generation using coal gangue is at the advanced level of the world The equipment and technology of sintered brick manufactured from coal gangue have also reached the world s advanced level

Experimental Study on Physical Mechanical Properties of Hindawi

The treatment of expansive soil is always a difficult problem in engineering Using coal gangue fly ash and other solid waste to treat expansive soil has gradually become a new way of energy saving and environmental protection Most of the existing studies focus on using one or two kinds of admixtures to improve expansive soil but there are few studies on improving expansive soil with

Comprehensive Utilization of Resources SpringerLink

With the development of technology resource utilization improves and the technical bottleneck of complex ore is overcome continuously to produce construction bricks and strive not to increase coal gangue emissions and gradually digest the stock of coal gangue Finally the comprehensive utilization of tailings and coal gangue is

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

Comprehensive utilization method of coal gangue

The invention discloses a comprehensive utilization method of coal gangue The comprehensive utilization method of the coal gangue comprises the following steps separating alumina silica of coal gangue by adopting a baking crushing sulfuric acid leaching and centrifugal separation method thereby obtaining an aluminum salt Al2 SO4 3 solution and filter residues SiO2 adding slaked lime

Effects of constructing farmland with large amounts of iron tailings as

Hu et al 31 Duo and Hu 32 and Zhao et al 33 proposed a new technology of using Yellow River sediments as reconstructed soil material to mitigate coal mining induced subsidence

Comprehensive utilization of industrial by product gypsum

FGD gypsum comprehensive utilization technologies mainly include employed in the wallboard manufacture as cement retarders as a construction material for roads and as a soil ameliorant In China FGD gypsum is mainly utilized to produce wallboard and as cement retarders Among them the comprehensive utilization rate of coal gangue fly ash

Start bidding for the ecological control project of the Ordos Yellow

Environment Start bidding for the ecological control project of the Ordos Yellow River basin Seetao 2024 11 22 12 00 The scope of this bidding is to build two coal gangue treatment plants in the first phase with a total construction area of 400 mu The scope of this bidding is to build two coal gangue treatment plants in the first phase

CN1226190C Comprehensive utilization of coal gangue for producing

The present invention discloses a method of preparing aluminum oxide and electrolytic aluminium by the comprehensive utilization of coal gangue which has the technical scheme that the existing coal gangue power generation technology the electrolytic aluminum technology and the improved technology for preparing Al2O3 from fly ash are combined electricity produced by a gangue power plant is

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

Comprehensive Utilization of Coal Gangue Semantic Scholar

the coal gangue is the largest source of industrial solid waste in our country while it is also the second potential use of comprehensive utilization of coal gangue is not only the necessary of social needs but also an urgent requirement for the on the analysis of composition source and hazard of coal gangue the …

Study on Technologies and Countermeasures of Comprehensive Utilization

Abstract This article discusses a series of technologies of comprehensive utilization of coal resources and puts forward countermeasures of comprehensive utilization of coal are benefical for comprehensive utilization of coal resources and maximize economic and social interests of coal resources Access through your institution

Industrial development and prospect about comprehensive utilization of

Comprehensive utilization of coal gangue is of importance to sustainable development of society and economy China has made great progress in comprehensive utilization of

comprehensive utilization of coal

the comprehensive utilization engineering technology center of coal gangue coalseries kaolinite in the construction material industry declared by our company has passed the appraisal mr feng jianming chairman of the company was awarded the title of hohhot outstanding private entrepreneur in comprehensive utilization of oil shale and …

CN106583415B A kind of coal gangue component method of comprehensive

A kind of coal gangue component method of comprehensive utilization belong to gangue reutilization technology field solve the low value added technical problem that existing gangue gangue present in research application process is used as backfilling material solution are as follows gangue medium high carbon gangue and low carbon coal gangue after broken primary decarburization depth

comprehensive utilization technology of coal gangue In India

In addition the composition of coal gangue is closely associated with coal mining process At present the comprehensive utilization of coal gangue is mainly selected according to the carbon content and calorific value Coal gangue with a high carbon content >20% is commonly used for power generation and heating

Potentially useful elements Al Fe Ga Ge U in coal gangue a case

Since 1960s the comprehensive utilization of coal gangue has aroused great attention of many developed countries such as the USA and the UK which have issued the corresponding measures and the utilization of coal gangue in these countries reached more than 90% Doyle 1976 Edgar 1983

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

Utilization of Coal Gangue for Earthworks SpringerLink

Bulk utilization of CG can be accomplished by using them in various civil engineering applications More precisely its application in geotechnical engineering as a potential embankment or fill material can prove to be a prudent attempt However prior to its utilization clear understanding of geotechnical properties of CG becomes essential

Comprehensive Utilization of Coal Gangue Semantic Scholar

the coal gangue is a kind of solid wastes from coal mining and separating which is also a kind of grey black rock harder than coal characterized by low content of carbon and association with coal seams during coal impact of coal gangues on the environment has been expounded in the paper and the comprehensive utilization purposes …

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 …

Comprehensive utilization system and method of coal gangue

CN 112940783 A chemical patent summary

The Current Situation Research on Comprehensive Utilization of Coal Gangue

this paper summarizes the utilization of coal gangue in the preparation of chemical products such as alumina aluminum chloride and polyaluminum chloride new materials such as bricks cement raw materials ceramic materials molecular sieves ultra fine kaolin etc can also be used for comprehensive utilization of roads reclaimed fields …

The comprehensive utilization of the coal gangue ResearchGate

development and utilization of coal gangue not only can control the sources of pollution but also can turn the waste into valuable treasure and get enormous economic bene fits In

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

Currently new sorting technology of coal and gangue not merely focuses on the identification of coal and gangue but also emphasizes the fine identification of coal 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

Experimental Study on the Characteristics of Activated Coal Gangue and

Coal gangue based geopolymer CGGP is one of the hot spots existing in the recycling of coal gangue resources due to its good comprehensive mechanical properties However the coal gangue structure is stable and reactivity is poor so the coal gangue needs to be activated before utilization In this paper the microstructure changes of activated coal gangue by different mechanical and thermal

Discussion on comprehensive utilization of coal gangue

According to the quality and utilization ways of coal gangue the environmental problems and utilization status were total benefit of coal gangue utilization was estimated present national preferential policies about coal gangue s comprehensive utilization were expounded

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