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Mobile crushers can also be called mobile crushing plants, mobile crushers, etc. It is an inevitable product of high-tech crushing technology in the new era, and its main features are that it can be operated mobilely, can walk freely, and is more convenient for transitions, ensuring that the equipment While the production is safe, the work process is more reliable.
·Coal gangue separation technology using dense medium fluidized bed is a hot topic in the past decade but involves very complex gas solid flow The separation of coal gangue based on the ray method will use X ray or gamma ray and the radiation generated is harmful to the human body
·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
·For coal and gangue intelligent sorting processes for separation the use of coal and gangue mineral components with different fundamental differences and the study of different properties of minerals and coal with different scales and density regarding the gray value change law are presented The results show that the gray value of single minerals and mixed
·A large amount of coal gangue buildup may be a potential fire hazard associated with the heat released by microorganisms accumulating to the point of spontaneous combustion in the presence of unburned coal pyrite FeS 2 and gangue is likely to cause large scale fire and blast disasters and produce a significant amount of toxic emissions
·Coal gangue CG which accounts for about 10 20 % of coal output is a kind of solid waste generated during the coal mining and washing processes According to Fig 2 the annual output of CG in China fluctuates between 600 800 million tons with a utilization rate hovering around 70 %
·The use of coal gangue in geopolymerization reduces the environmental disturbance associated with its disposal The production of coal gangue based geopolymer typically emits fewer greenhouse gases compared to traditional stabilizers such as cement and lime thus mitigating climate change impacts Coal gangue based geopolymer reduces the
·Currently there is a need to build and enhance the multi component gradient use model of coal gangue Therefore the complete exploitation of coal gangue is a critical issue for promoting green coal mining extending the coal industry chain building a resource and ecologically friendly society and realizing the transition of the economic
·Global rise in greenhouse gas emissions GHG is triggered mainly due to the consumption of fossil fuels for power generation and domestic usage Among the fossil fuels coal is a primary contributor to global GHG with substantial emissions generated during its mining and combustion process Coal gangue a residue produced during the coal mining process has
·To make a comprehensive use of coal gangue it is proposed to use this solid waste instead of fine aggregate to prepare gangue concrete pile for pile net composite foundation The influences from substitution ratio of fine coal gangue aggregate upon the mechanical parameters of concrete were analyzed through laboratory test and the lab scale model test
·Coal gangue has become one of the industrial wastes with the largest annual discharge and accumulated stock in China 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
·Coal mining generates coal gangue CG whose poses considerable ecological challenges Therefore using CG in the preparation of electromagnetic wave EMW absorbing materials has emerged as a promising approach for its high value utilization In this study CG was dried and then ball milled The microscopic morphology element composition
·These chemical and mineral properties similar to natural aggregates NA make it possible to use coal gangue as aggregate to prepare concrete [10] The C15 ∼ C40 concrete can be prepared by using coal gangue aggregate CGA instead of NA [11] Due to the difference of coal forming conditions and coal mining conditions the structure of coal
·The persistent reliance on coal has resulted in the accumulation of substantial coal gangue a globally recognized problematic solid waste with environmental risks Given the coal gangue properties and global land degradation severity the resourceful utilization of coal gangue as soil conditioners is believed to be a universally applicable cost effective high
·Quantitative analysis of the whole rock minerals of coal gangue was conducted using a Nippon Nikkei ultima 4 X ray diffractometer and the test results are shown in Fig to the
·Then the technology to use coal gangue as filler in railway subgrade was put forward based on a real engineering application with the Jingang coal carrying railway special line Field tests
·ABSTRACT A greenhouse pot experiment was conducted to investigate the effect of application of coal gangue CG at different rates 0 5 10 20 and 50% and inoculation with two arbuscular mycorrhizal AM fungi Glomus intraradices and Glomus mosseae as mediating plant adaptation to soil amended with CG on the nutrient content of forage
·Using coal gangue CG as raw material a new type of all solid waste based 13 X molecular sieve material was controllably prepared by alkali fusion hydrothermal method The synthetic molecular sieve was used as a solid adsorbent to treat Cd2 containing wastewater and its adsorption behavior on Cd2 in aqueous solution was studied and
·Recent research has established coal gangue CG utilization a mining waste generated during the mineral processing stage of coal mining as a fill material in earthworks Further the earlier researchers have also identified the environmental benefits of reduced carbon emissions attainable through its utilization in earthworks However the
·The reuse of coal gangue for energy recovery is developing rapidly in China due to its advantage in achieving both economic and environmental benefits Low quality coal is often added to elevate the calorific value of the fuel In this paper the combustion characteristics as well as pollutant emissions SO2 and NO of coal gangue low quality coal and their blends
·With the development of China s coal industry coal gangue has become one of the most extensive solid collection of soil from other places for land reclamation has become a commonly used technology for ecological restoration of coal mining areas in China The purpose of this study was to use coal gangue as a new type of planting substrate
·Industrial solid waste coal gangue CG is used as the research object and the mechanical activation water washing pretreatment method was used to explore the feasibility of carbon removal by water washing and the improvement and microscopic mechanism of the treatment process on the cementitious activity of CG The mechanism and effect of
Moreover coal gangue was a byproduct of the coal mining and washing processes accounting for approximately 10 % 25 % of the total raw coal production [[9] [10] [11]] Its carbon content was relatively low and its hardness was higher than that of coal [12] According to the data of China Resources Comprehensive Utilization the production amount of coal gangue in 2021
·Coal gangue was a byproduct which was generated during the mining and washing of coal It accounted for approximately 10% 15% of the total coal production [5] Coal gangue was one of the largest industrial residues and its accumulation was related to coal mining activities [6 7] Traditional methods of handling coal gangue usually involved backfilling and
·The use of activated cement paste and coal gangue as partial replacements for ordinary Portland cement may result in a decrease in fluidity which further decreases after calcination However calcination activation promotes strength development [27]
