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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 is the largest output of industrial solid wastes in China The stockpiling of coal gangue is caused severe environmental impact for the ecological is important for resources conservation and environment protection to actively and comprehensively utilize of bulk quantity coal gangue
·Coal gangue as a subgrade filler is of great significance for the sustainable development of the economy society and environment Particle crushing tests were conducted on coal gangue coarse grained subgrade filler CGSF under uniaxial compression conditions and the relationships between load and displacement crushing strength failure pattern and
·Coal is an important energy material [1] and chemical raw material [2 3] for human beings which makes it mined in large quantities every the process of coal mining coal gangue is inevitably mixed into raw coal accounting for more than 10% [4] The vast majority of solid waste in China comes from coal mining [5] The main components of coal gangue are
·The accumulation of coal gangue poses significant environmental challenges due to its massive volume and low reactivity This study investigates the influence of calcium hydroxide Ca OH ₂ and gypsum on the mechanical properties hydration and pore structure of low carbon cementitious materials incorporating high volumes of calcined coal gangue CCG
·As the numerous industrial solid waste coal gangue caused serious environmental pollution in China while the it could be modified and reused as an effective adsorption material in environmental remediation In the current study the coal gangue was modified by environmentally friendly ball milling chemical modification method and used for
·To elucidate the effects of long term 20 years afforestation with different woody plant species on the soil microenvironment in coal gangue polymetallic contaminated areas This study analyzed the soil physicochemical properties soil enzyme activities soil ionophore bacterial community structure soil metabolite and their interaction relationships at different
Coal gangue which is abundant and often considered a waste material poses significant environmental challenges due to its disposal issues Utilizing coal gangue in cement production not only addresses the raw material shortage but also offers a sustainable solution for managing industrial waste
·Currently the main method of mine solid waste disposal and utilization is to apply gangue to underground filling For the grading characteristics of coal gangue in the hollow zone in underground
·Abstract Coal gangue as one of the largest industrial solid wastes in China brings about very serious environmental social and economic problems Comprehensive utilization of coal gangue is of importance to sustainable development of society and economy
Coal gangue a by product produced during the coal processing has a serious impact on the environment Using coal gangue as a fertilizer has been proven helpful in potentially reducing its environmental impact and improving its value In this study the formation mechanism and influencing factors of coal gangue based silicon fertilizer was studied using XRD and FT IR
·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
·Hence coal and gangue automatic recognition with high accuracy is very important for intelligent longwall top coal caving LTCC mining A novel approach of liquid intervention infrared detection is introduced to enhance the recognition accuracy when the exterior color of coal and gangue is similar
·The coal gangue mainly contains Al 2 O 3 and SiO 2 which can be used as aggregate [6] while a small amount of alkali metal oxides such as Na 2 O K 2 O CaO and Fe 2 O 3 can be used as modifier or flux [7] Based on this it can prepare porous foams based on aluminosilicates [8] [9] and doped modified asphalt [10] [11] In addition its application
·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 of a certain particle size was subjected to calcination treatment and the characteristics of coal gangue before and after calcination were analyzed A paste was prepared by replacing 30% of cement with 0 1 mm coal gangue and macroscopic mechanical properties and XRD TG DTG FTIR and SEM at the microscopic level were analyzed
·Coal gangue is a rock mixed with organic and inorganic compounds co deposited with coal during coal formation Usually in a thin layer and in the coal seam or in the top and bottom of the coal seam gangue is typical solid waste discharged when coal is excavated and washed in the production In China the total of accumulative stockpile of coal
·The coal industry is an important pillar industry of economic development in China with coal mining produced a lot of coal gangue which is occupied land and pollution of the environment and the production and life of coal producing areas have been seriously affected coal gangue has become a heavy burden restricting the sustainable development of coal
·Coal gangue is a mine waste generated during the mineral processing phase of coal production With the surge in demand for coal in thermal power steel and cement generation industries the rate of coal gangue generation has reached unprecedented heights With the realisation of potential threat posed by coal gangue researchers have made attempts to
·Process of filling goaf with coal gangue slurry The process of filling goaf with coal gangue slurry is shown in Fig the coal gangue is crushed by a multi stage crusher and enters
·Synthesis and development of high efficiency and low cost adsorbents for treating of the wastewater containing heavy metal ions and/or dyes has been aroused worldwide attention in recent years In this study the coal gangue as the only supply of Si and Al was adopted to synthesize sodalite using hydrothermal method Both the gangue and the
·Economic and social development has created a high demand for energy In China coal resources have long ranked first as the main energy source resulting in an annual coal mining output of up to 4 billion tons H Chen et al 2020 In the process of coal mining a large amount of solid waste is discharged in the form of coal gangue which accounts for
·However coal gangue CG is the by product during coal washing and mining which is one of the largest solid wastes with a global stockpile exceeding 35 billion tons and this stockpile still keeps growing with a speed of 350 million tons per year [10] [11] The vast accumulation CG not only occupies land but also leads to environmental
·China s total coal production in 2021 exceeded billion tons 52% of the world s total Coal gangue a solid waste of coal mining accounts for 15 20% of coal production when directly discharged on the ground surface as waste heaps it occupies large areas of land and cause environmental pollution This paper summarizes the existing gangue backfilling
<sec> Objective The primary objective of this study is to tackle the manifold challenges associated with identifying coal gangue during coal mining including but not limited to the inefficiencies high operational complexity and substantial costs inherent in traditional identification methods By integrating and refining advanced deep learning technologies
·Coal Gangue Solid Waste Comprehensive Utilization Physic Chemical Property Pollution 1 2 2 2 2 2 1 2 ：20151113
