The disorderly accumulation of coal gangue not only occupies a large amount of land resources and causes natural disasters but also pollutes the surrounding ecological environment which in turn affects human health and normal production and life
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Abstract The identification of coal and gangue plays an important role in improving resource utilization and reducing environmental pollution Due to the reason that the surface character of coal and gangue is closed to each other it is difficult to obtain a satisfied recognition result in an efficient manner by using the traditional visible image analyzing method
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How to solve this environment pollution and effectively utilize the coal gangue is a main subject and difficult problem faced at present In this paper we performed a comprehensive analysis of the development about comprehensive utilization of coal gangue and provided a basis for the research of coal gangue and environmental protection
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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
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According to the calorific value 1 000 m3 of methane can be equivalent to 1 t of standard coal Due to the high thermal efficiency of the former the actual 250 m3 methane can replace 1 t of standard coal China s coalbed methane resources are abundant and the amount of gas emitted by coal mining is only 6 billion m3 per year Coal gangue
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The Current Situation of Comprehensive Utilization of Coal Gangue in China Abstract Coal gangue is one of the largest industrial solid wastes in China the comprehensive utilization of coal gangue has important social economic and environmental benefits In this paper the coal gangue and comprehensive utilization have been discussed in detail
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The wastes exclude stones stripped or dug from mining gangue and acid or alkaline waste stones not included Output Value of Products Made from Utilization of Waste Gas Waste Water and Industrial Solid Wastes refers to the value of products calculated at current prices made by industrial enterprises using recovered waste water waste gas
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Orthogonal experiments of iron leaching by acids reveal that the maximal iron leaching rate and product calcined whiteness of the coal gangue are % and % respectively For that of the slag of CFB they are % and % while for that of the washed fly ash they are % and %
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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
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Comprehensive development and utilization of coal gangue in the western region DOI link for Comprehensive development and utilization of coal gangue in the western region Comprehensive development and utilization of coal gangue in the western region book
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comprehensive utilization about CG and CBM is broad The co combustion studies about gangue and coal washing mud or biomass in fluidized bed are widely studied 11However this research is mainly focused on the mixture of lean calorific value solid fuels the co combustion of lean calorific value
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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 …
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The comprehensive utilization of mineral resources is an extension of comprehensive exploration evaluation and development Comprehensive prospecting exploration evaluation and development are the basis for developing and utilizing associated resources Comprehensive evaluation and exploration should be adopted for associated resources
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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
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Coal Gangue Suspended Roller Sand Machine In Spain 2024 6 11 · Coal Gangue Suspended Roller Sand Machine In Spain 1 introduction coal gangue is a type of solid waste produced in the coal mining and washing processes the global coal mining industry produces approximately 350 million tons of inactive gangue each year and the accumulated coal gangue in china alone amounts to 60 billion tons in
Get PriceThe conventional convolution operation mainly consists of the following two steps 1 applying a regular grid R R is the size and expansion of the receptive field in the standard convolution for sampling on the input feature map and 2 performing weighting operations as shown in the following formula [ 21 ]
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the application relates to a comprehensive utilization system and method of coal gangue which relates to the technical field of solid waste resource utilization and comprises a separation subsystem a coal gangue separation subsystem and a coal gangue separation subsystem wherein the separation subsystem is used for crushing and screening raw …
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therefore the main objective of this paper is to provide a comprehensive literature review of coal gangue utilization in building material production energy generation soil improvement and other high added applications analyze the worldwide dynamics of the studies on coal gangue utilization and identify the potential environmental risks in …
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Coal cities are an essential impetus for economic development and urbanization processes in China However a series of environmental issues provoked by resource exploitation cause the environmental sustainability of coal cities to face enormous challenges Therefore on the basis of the time series data of Yulin City from 1996 to 2024 this paper explores the nexus between socioeconomic
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Abstract The amount of coal gangue a by product of coal mining and washing is rapidly increasing with the growing trend of energy consumption The accumulated coal gangue without appropriate utilization has resulted in a squander of resources waste disposal and environmental pollution issues Over the past few decades there has been wide
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The invention relates to a comprehensive and integrated utilization method of coal gangue and relates to the technical field of application of coal gangue The method comprises the following steps 1 preparing a sulphoaluminate cementing material from coal gangue desulfurized gypsum aluminum ash and electroslag stone 2 preparing light high strength ceramsite by using coal gangue and
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In the article comparative laboratory strength tests of three point and four point wooden cribs models are presented In the case of cribs with a triangular cross section the notches made at an angle of 60 degrees were used for the first time The individual beams of the three point and four point cribs were stacked horizontally and connected to each other by means of a quick drying adhesive
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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 …
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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
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Coal gangue belongs to solid waste What equipment is used in the production line of comprehensive utilization of coal gangue As a manufacturer HCMilling Guilin Hongcheng has rich experience in flour production and manufacturing and also provides tailor made selection scheme to meet the project production The new generation of vertical roller mill is a special grinding mill for solid
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Carbonization is an effective way to achieve the comprehensive utilization of coal However the in situ variation of graphite like microcrystals the basic structure of coal macromolecules with heating and cooling during carbonization has not been fully characterized so far Anthracite is a type of humic coal with the highest degree of coalification and its structure change can be monitored
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For comprehensive utilization of the coal gangue from different locations coal gangues were calcined at temperatures of 800°C 900°C and 1 000°C for 2 h respectively and then blended in cement with a replacement level of 10% 20% 30% and 40% by weight to fabricate the blended cement mortars
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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
Get PriceThe invention discloses a comprehensive utilization method of coal gangue relating to the technical field of coal gasification On the premise of effectively and comprehensively utilizing the coal gangue the method can avoid slag formation in the gasification technique ensure the continuous and stable operation of the gasification process and widen the coal type applicability of the
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This article briefly introduces the compose and harm of coal gangue and integrates with the characteristics of coal gangue s chemic component of Pingdingshan Coal Mine and analyzes the comprehensive utilization of the coal gangue approach then carries out the comprehensive utilization of the coal gangue No Paper Link Available Save to Library
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