MTW European Type Trapezium Mill
Input size:30-50mm
Capacity: 3-50t/h
LM Vertical Roller Mill
Input size:38-65mm
Capacity: 13-70t/h
Raymond Mill
Input size:20-30mm
Capacity: 0.8-9.5t/h
Sand powder vertical mill
Input size:30-55mm
Capacity: 30-900t/h
LUM series superfine vertical roller grinding mill
Input size:10-20mm
Capacity: 5-18t/h
MW Micro Powder Mill
Input size:≤20mm
Capacity: 0.5-12t/h
LM Vertical Slag Mill
Input size:38-65mm
Capacity: 7-100t/h
LM Vertical Coal Mill
Input size:≤50mm
Capacity: 5-100t/h
TGM Trapezium Mill
Input size:25-40mm
Capacity: 3-36t/h
MB5X Pendulum Roller Grinding Mill
Input size:25-55mm
Capacity: 4-100t/h
Straight-Through Centrifugal Mill
Input size:30-40mm
Capacity: 15-45t/h
Sulfur content of Jincheng coal gangue
Estimate of sulfur, arsenic, mercury, fluorine emissions due to
2016年2月1日 We determined the sulfur, arsenic, mercury, and fluorine contents in these samples and calculated the average contents of the samples based on weight of coal reserves 2020年6月26日 The results suggested that coal gangue significantly influences soil S, pH and plant species after 8 years of natural recovery The CKfar plots contained relatively low soil Excess sulfur and Fe elements drive changes in soil and2021年3月15日 In this study, the effects of a reducing agent and desulfurizer on the properties of the CG reduction products were studied via deep reduction experiments The results show that Study on the factors affecting the deep reduction of coal gangue 2021年3月11日 In this study, the leaching and precipitation characteristics of heavy metals in lowsulfur coal gangue under different environmental conditions were simulated by indoor Characteristics of leaching of heavy metals from lowsulfur coal gangue
Opportunities, challenges and modification methods of coal gangue
2024年9月7日 They identified that coal gangue content is the primary driving factor influencing soil moisture and plant growth, whereas particle size is the main determinant affecting soil 2023年5月25日 Against the background of the carbon neutralization strategy, the treatment and utilization of coal gangue should focus on three aspects: its own carbonfree emissions; its carbon absorption effect and lowcarbon Lowcarbon utilization of coal gangue under the 2023年12月8日 In this study, the coal gangue dump at Gushuyuan Coal Mine in Jincheng City, Shanxi Province, China (referred to as the GSY coal gangue dump) was selected as the research subject The study included practical Detection of Spontaneous Combustion Areas of 2021年3月11日 The conclusions are as follows: higher heavy metal content in lowsulfur coal gangue is associated with greater, leaching of heavy metals; acidic conditions promote the Characteristics of leaching of heavy metals from lowsulfur coal gangue
Representative coal gangue in China: Physical and chemical
2024年2月1日 Based on the source and distribution of coal gangue (CG) in China, this study introduces the current situation of CG storage in China and the problems existing in the 2022年8月11日 release of heavy metals in lowsulfur coal gangue; and more precipitation is associated with better release of heavy metals from the lowsulfur coal gangue Keywords Coal gangue Leaching Heavy metal Leaching rate 1 Introduction Coal gangue is an industrial solid waste inevitably produced in coal mining and coal washing, and its emissionsCharacteristics of leaching of heavy metals from low 2024年9月20日 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 lowcarbon cementitious materials incorporating high volumes of calcined coal gangue (CCG) Improvement of strength and microstructure of lowcarbon 2024年2月1日 Coal is not only the most abundant fossil fuel on earth, but also an indispensable energy source in the industrial age According to the data of “2021 National Mineral Resources Reserve Statistics Table”, the cities with the most coal reserves in China's energy minerals are Inner Mongolia, Xinjiang, Shanxi, Hebei, Chongqing, Gansu, Shaanxi and other regionsRepresentative coal gangue in China: Physical and chemical
Pyrite Transformation and Sulfur Dioxide Release during Calcination
2014年8月11日 Calcination is a typical process associated with the utilization of coal gangue A concern of this procedure is the emission of sulfur dioxide (SO2)2020年11月1日 The formulation of the substrate was optimized using an orthogonal experiment with four factors: coal gangue (g)tosoil (g) ratio (1000:0, 750:250, 500:500), maize straw content (0, 25, and 50 g Study on the factors affecting the deep reduction of coal gangue 2021年3月15日 Coal gangue with a sulfur content >2 % (w/w) is commonly referred to as highsulfur coal gangue and is a vital sulfur deposit in nature (Zhao et al, 2021) After the Industrial Revolution, human mining activities resulted in the destruction of the rock structures of coal mining areas, causing considerable changes in the steady state of sulfur Study on the factors affecting the deep reduction of coal gangue 2024年9月7日 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, costeffective, high Opportunities, challenges and modification methods of coal gangue
(PDF) Microbial community structures and sulfur speciation
2019年8月1日 The microbial community structures, sulfur speciation, and their correlations in soil samples in and around Xiangtan Liejiaqiao Coal Gangue Dump in Hunan province south of China were analyzed with 2024年7月23日 release of pollutants from highsulfur coal gangue Highsulfur coal gangue was continuously immersed in a proline solution and in deionized water (as a control treatment) for 540 days The results showed that the coal gangue in the control treatment was oxidized and generated leachate with poor water qualities, ie, the leachate exhibited Effects of a proline solution cover on the geochemical 2023年12月8日 The 9# coal gangue is of a relatively small quantity, with a total stacking capacity of 2 million tons per month Most of the coalwashinginduced gangue, whose sulfur content is high (23% on average), is accumulated in the western gangue dumpDetection of Spontaneous Combustion Areas of Coal Gangue 2018年9月1日 The types of PAHs released during the high temperature stage of spontaneous combustion were up to 9 The release amount of PAHs generally increased with the rising of the volatile content, sulfur content, carbon content, fixed carbon content and calorific value of coal and gangue, but decreased with the rising of ash contentCharacteristics of polycyclic aromatic hydrocarbon release
Lowcarbon utilization of coal gangue under the
2023年5月25日 The carbon content of coal gangue, as a type of carboncontaining solid waste, varies greatly and tendency of coal gangue and found that the internal threshold conditions for the spontaneous combustion 2020年1月23日 Limestone (CaCO3), which could promote sulfur fixation, was added to coal gangue during roasting in a circulating fluidized bed (CFB) boiler CaO and CaSO4 were the main Cabearing minerals while Sulfur Conversion of Mixed Coal and Gangue 2022年10月28日 Critical metallic elements in coal gangue have great utilization potential, especially due to the current shortage of these metals This paper focused on examining the feasibility of physical separation (screening and floatsink tests) and calcination treatment for the enrichment of critical elements (Li, Ga, and rare earth elements plus yttrium (REY)) from coal The Effect of Physical Separation and Calcination on 2021年3月11日 Coal gangue is the main pollution source of mining areas When coal gangue is stacked and recycled, the heavy metal elements contained in it are released by natural weathering and leaching, which causes damage to the surrounding ecological environment In this study, the leaching and precipitation characteristics of heavy metals in lowsulfur coal gangue Characteristics of leaching of heavy metals from lowsulfur coal gangue
Cocombustion and emission characteristics of coal gangue
2015年2月18日 The reuse of coal gangue for energy recovery is developing rapidly in China, due to its advantage in achieving both economic and environmental benefits Lowquality 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, lowquality coal and their blends 2024年8月10日 Coal gangue (CG) is a solid waste generated during coal mining, washing and processing, accounting for 15–20% of coal production It is considered one of the largest industrial solid wastes in terms of discharge and accumulation amounts (Wu et al, 2017)As the world's largest coal producer, China had accumulated over 7 billion tons of coal gangue by 2022 Simultaneous nutrients activation and pollutants removal of coal gangue 2023年8月26日 Similarly, due to mining in the coal mining area, 16 coal gangue dumps were formed around the Tiefa mining area and had a great impact on the mining environment [35] Since some coal gangueQuantitative Inversion of Fixed Carbon Content in Coal DOI: 101016/jfuel2020 Corpus ID: ; Study on the factors affecting the deep reduction of coal gangue containing high contents of iron and sulfur @article{Zhao2020StudyOT, title={Study on the factors affecting the deep reduction of coal gangue containing high contents of iron and sulfur}, author={Hongyu Zhao and Yanli Chen and Xuqin Duan}, journal={Fuel}, Study on the factors affecting the deep reduction of coal gangue
Enhancing the carbon content of coal gangue for
2024年5月1日 Coal gangue contains a substantial amount of carbonaceous shale and siltstone and is rich in trace elements essential for plant growth The nitrogen, phosphorus, potassium, and silicon contents in coal gangue are comparable to those found in soil Furthermore, the organic matter content in coal gangue is 2–10 times higher than that in soil2024年7月19日 The carbon and sulfur contents in the studied coal gangue are determined by a carbon and sulfur analyzer (NCS, CS2800G) Gallium in the coal gangue samples was determined by inductively coupled plasma mass spectrometer (ICPMS, Thermo Scientific, iCAP RQ), and pulse counting mode (three points a peak) was performed during the whole analytical Study on the Occurrence of Gallium in GalliumEnriched Coal Gangue 2024年8月30日 Medium and high sulfur coal gangue (MHSCG) presents challenges for safe application on civil engineering building materials due to the high content of unstable pyrite, of which the acidic oxidation products are against alkali cementitious materialsFor better utilization of MHSCG, in this research, the carbonateinducing bacterium Sporosarcina Pasteurii with its Influence of carbonateinducing bacteria on desulfurization 2023年8月12日 Although coal gangue is a coal mining and processing byproduct, there is still some organic matter in it Therefore, the calcination method can be used to enrich the criticaland Recovery of Critical Elements from Coal Gangue
Sulfur Conversion of Mixed Coal and Gangue during
2020年1月23日 The construction of a power plant using a 660 MWe supercritical circulating fluidized bed (CFB) boiler with cocombustion of coal and gangue has been proposed in China Therefore, this study simulated the distribution law and transformation mechanism of sulfurcontaining phases using three lowcalorific samples of gangue and coal mixtures under 2023年12月1日 Coal gangue, characterized by high ash content and low heating value, is an undesired but inevitable byproduct of coal mining [[1], [2], [3]]Based on the fuel flexibility advantage of circulating fluidized bed combustion (CFBC) technology and increasing demand for electricity, coal gangue is widely used in CFBC power plants for power generation in some Air and oxyfuel combustion characteristics of coal gangue 2024年3月1日 Coal gangue is a solid waste generated during coal mining and washing, accounting for 15–30% of raw coal production (Li and Wang, 2019)Coal gangue with a sulfur content of more than 2% is referred to as highsulfur gangue (Wang et al, 2023a, Wang et al, 2023b)Highsulfur gangue is highly polluting because of its high concentration of iron sulfide Effects of Setaria viridis on heavy metal enrichment tolerance 2018年2月26日 Batch experiments were conducted to comparatively evaluate the inhibition effects and mechanisms of a lowconcentration (1%) proline solution cover on the release of pollutants from highsulfur coal gangue Highsulfur coal gangue was continuously immersed in a proline solution and in deionized water (as a control treatment) for 540 days The results Effects of a proline solution cover on the geochemical and
Trace Elements in Coal Gangue: A Review IntechOpen
2017年12月20日 Coal gangue is one of the largest industrial residues It has high ash content, low carbonaceous content, and heating value Meanwhile, it has some trace elements Large quantities of coal gangue cause serious environmental problems by polluting the air, water, and soil as well as occupying a tremendous amount of land Now, coal gangue utilization is a 2023年1月15日 Coal gangue (HSCG) is the darkgray rock produced during coal mining and washing process, and its production is about 10%–15% of coal mining, which depends on the geology and mining conditions (Zhu et al, 2020; Bai et al, 2022)Due to the utilization of coal resources in the world lead to the accumulation of HSCG also increased year by year (Zhang Release characteristics of heavy metals in highsulfur coal gangue 2024年8月30日 1 Introduction In China, coal economy, as a supportive industry, has an irreplaceable role in economic development, production and living However, in the coal mining production process, coal gangue accounts for 15–20 % of the raw coal but cannot be used like coal due to its low calorific value and low combustion efficiency [1]Generally, coal gangue is Influence of carbonateinducing bacteria on desulfurization 2022年8月11日 release of heavy metals in lowsulfur coal gangue; and more precipitation is associated with better release of heavy metals from the lowsulfur coal gangue Keywords Coal gangue Leaching Heavy metal Leaching rate 1 Introduction Coal gangue is an industrial solid waste inevitably produced in coal mining and coal washing, and its emissionsCharacteristics of leaching of heavy metals from low
Improvement of strength and microstructure of lowcarbon
2024年9月20日 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 lowcarbon cementitious materials incorporating high volumes of calcined coal gangue (CCG) 2024年2月1日 Coal is not only the most abundant fossil fuel on earth, but also an indispensable energy source in the industrial age According to the data of “2021 National Mineral Resources Reserve Statistics Table”, the cities with the most coal reserves in China's energy minerals are Inner Mongolia, Xinjiang, Shanxi, Hebei, Chongqing, Gansu, Shaanxi and other regionsRepresentative coal gangue in China: Physical and chemical 2014年8月11日 Calcination is a typical process associated with the utilization of coal gangue A concern of this procedure is the emission of sulfur dioxide (SO2)Pyrite Transformation and Sulfur Dioxide Release during Calcination 2020年11月1日 The formulation of the substrate was optimized using an orthogonal experiment with four factors: coal gangue (g)tosoil (g) ratio (1000:0, 750:250, 500:500), maize straw content (0, 25, and 50 g Study on the factors affecting the deep reduction of coal gangue
Study on the factors affecting the deep reduction of coal gangue
2021年3月15日 Coal gangue with a sulfur content >2 % (w/w) is commonly referred to as highsulfur coal gangue and is a vital sulfur deposit in nature (Zhao et al, 2021) After the Industrial Revolution, human mining activities resulted in the destruction of the rock structures of coal mining areas, causing considerable changes in the steady state of sulfur 2024年9月7日 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, costeffective, high Opportunities, challenges and modification methods of coal gangue 2019年8月1日 The microbial community structures, sulfur speciation, and their correlations in soil samples in and around Xiangtan Liejiaqiao Coal Gangue Dump in Hunan province south of China were analyzed with (PDF) Microbial community structures and sulfur speciation 2024年7月23日 release of pollutants from highsulfur coal gangue Highsulfur coal gangue was continuously immersed in a proline solution and in deionized water (as a control treatment) for 540 days The results showed that the coal gangue in the control treatment was oxidized and generated leachate with poor water qualities, ie, the leachate exhibited Effects of a proline solution cover on the geochemical
Detection of Spontaneous Combustion Areas of Coal Gangue
2023年12月8日 The 9# coal gangue is of a relatively small quantity, with a total stacking capacity of 2 million tons per month Most of the coalwashinginduced gangue, whose sulfur content is high (23% on average), is accumulated in the western gangue dump