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
Lignite dehydration
A review of kinetic studies on evaporative dehydration of lignite
2022年12月1日 This paper can help to enhance the comprehensive understanding of lignite evaporative dehydration, and provide a theoretical basis for the development of green and 2021年5月1日 Lignite, a natural watercontaining nonrenewable energy source in the Xilingol league of Inner Mongolia, exhibited a good dehydration effect for moisture release from lignite Experimental study on the dehydration characteristics and 2021年5月5日 Hydrothermal dehydration (HTD) has been confirmed as an effective method to improve the quality of lignite for further utilization In this study, the effects of the changes in Effect of Hydrothermal Dehydration on the Slurry Ability of LigniteMicrowave has attracted much attention with respect to coal drying, especially improving the performance of lignite In this study, the characteristics of dehydration dynamics and changes A review of kinetic studies on evaporative dehydration of lignite
A review of kinetic studies on evaporative dehydration of lignite
2022年12月1日 Dehydration is a necessary link for lignite upgrading, and evaporative dehydration is one of the most effective dehydration technologies for lignite Kinetics, as a 2023年7月4日 In this paper, the uniaxial compression test of lignite with different dehydration times under normal temperature and humidity control conditions was carried out, and the Experimental investigation on acoustic emission and damage Kinetics, as a fundamental requirement of nearly all industrial activities and engineering research, plays a great role in lignite evaporative dehydration In this paper, the occurrence state of A review of kinetic studies on evaporative dehydration of ligniteBaiyinhua lignite was treated by hydrothermal treatment dewatering (HTD) The production characteristics of the gas, solid, and liquid were studied Results show that HTD is an effective means to decrease water content and waterholding Characteristics and Evolution Mechanism of Three
The kinetics and mechanism of lignite dehydration
The dehydration of a homogeneous cubic sample of ‘woody’ lignite at 290 K follows a modified contracting cube equation, d/d=(1 –)(1 –), in which is a constant, is the fraction of the sample Semantic Scholar extracted view of "A review of kinetic studies on evaporative dehydration of lignite" by Rui Han et al Skip to search form Skip to main content Skip to account menu Semantic Scholar's Logo 221,946,100 papers from all fields of science Sign A review of kinetic studies on evaporative dehydration of ligniteFor solving the problems of high energy consumption and high capacity of waterabsorption, microwave dehydration technology of lignite was studied in this paper A selfdeveloped microwave system was used for the experiment on dehydration of lignite from eastern Inner Mongolia It was proved that the condition of moisture migration was improved and microwave Dehydration and Upgrading of Lignite with Microwave2020年10月1日 Although fractures in the original state lignite are theoretically quite undeveloped, it is interesting that the lignite we see in surface coal mines is often highly fractured (Fig 1)Lowrank coal exhibits gellike properties [12], [13], [14], and even at room temperature, the lignite matrix will shrink due to dehydration, and a large number of fractures will be formed Experimental study on the change of reservoir characteristics of
Influence of Composition on Differential Evolution of
2024年1月4日 Drought and dehydration may cause extensive damage to lignite structures by initiating and spreading fractures In particular, the lignite slope in the openpit goaf undergoes alternate syneresis and expansion under the action of the droughtprecipitation cycles, resulting in continuous damage and degradation2021年5月11日 Insitu mining of lignite requires dehydration, pyrolysis, gasification, and other stages The injected fluid, dehydrated water, and pyrolysis products are transported in the developing pores and Effect of Hydrothermal Dehydration on the Slurry Ability of Lignite2023年7月4日 The lignite would undergo dehydration cracking at normal temperature, which has an important impact on the stability of coalrock slope in openpit mine In this paper, the uniaxial compression test of lignite with different dehydration times under normal temperature and humidity control conditions was carried out, and the mechanical parameters, deformation, AE Experimental investigation on acoustic emission and damage In this study,the moisture in a lignite was removed by lowtemperature drying method,and the state of mois ture in lignite,the chemical composition of lignite,the characteristics of surface pore structure and micromorphology during dehydration were studied by low field nuclear magnetic resonance, Fouriertransform infrared spectroscopy, physical adsorption and scanning Effect of dry dewatering on physicochemical structure and hydro
The Influence of Anionic Additives on the Microwave Dehydration
2020年7月16日 DOI: 101021/acsenergyfuels0c01248 Corpus ID: ; The Influence of Anionic Additives on the Microwave Dehydration Process of Lignite @article{Ge2020TheIO, title={The Influence of Anionic Additives on the Microwave Dehydration Process of Lignite}, author={Lichao Ge and Xiaoyan Liu and Hongcui Feng and Huaqiang Chu and Chang Xu and DOI: 101016/jfuel2020 Corpus ID: ; Experimental study on the change of reservoir characteristics of different lithotypes of lignite after dehydration and improvement of seepage capacityExperimental study on the change of reservoir characteristics of 2021年11月1日 Process characteristics, dehydration kinetics, and moisture diffusion coefficient results showed that the higher the cationic valence, the weaker the promotion effect of additives on lignite Promotion effect of activated carbon, coal char and graphite on lignite 2021年4月1日 Process characteristics, dehydration kinetics, and moisture diffusion coefficient results showed that the higher the cationic valence, the weaker the promotion effect of additives on lignite Enhancement of lignite microwave dehydration by cationic
The Influence of Opencast Lignite Mining Dehydration on Plant
The Influence of Opencast Lignite Mining Dehydration on Plant Production—A Methodological Study Benedykt Pepli ń ski 1, * and Wawrzyniec Czubak 22020年10月1日 Dehydration can significantly improve the gas flow capacity in the lignite reservoir with originally low permeability Through nuclear magnetic resonance (NMR) tests, imaging experiments, and permeability tests, the changes in reservoir properties of different lithotypes of lignite during dehydration were comprehensively summarizedExperimental study on the change of reservoir characteristics of 2021年5月1日 22 Methods221 Thermogravimetric experiment The dehydration experiment of lignite in a nitrogen atmosphere (50 mL/min) was carried out with a thermogravimetric analyser (Netzsch STA 449) to investigate the weight loss characteristics of coal samples under different heating rates (5, 10, 20, 40, 80 and 100 °C/min)Experimental study on the dehydration characteristics and evolution of 2022年1月1日 The effects of anions and cations on the process of lignite dehydration have been previously studied by the authors [17], [18] Results showed that the additives accelerated the lignite microwave drying process and improved the physical and chemical properties of Promotion effect of activated carbon, coal char and graphite on lignite
Experimental study on the change of reservoir characteristics of
2020年10月1日 Xin et al (2020) used SEM, NMR, and XCT methods to investigate the changes in reservoir pores after lignite dehydration, which can partly reveal the pore connectivity of coal2022年12月1日 Dehydration is a necessary link for lignite upgrading, and evaporative dehydration is one of the most effective dehydration technologies for ligniteA review of kinetic studies on evaporative dehydration of lignite2021年4月1日 In contrast to these previous studies, ours investigated the use of chlorides, containing cations of varied and same valence, as additives during lignite microwave dehydration By comparing lignite microwave heating under different experimental conditions, as well as the physical and chemical property changes of solid products (SPs) and liquid Enhancement of lignite microwave dehydration by cationic 2020年7月6日 The dehydration rate of lignite is closely related to the thickness of the lignite bed in the reactor Additionally, the relative content of OCFGS on the surface of dehydrated lignite exhibits a The Influence of Anionic Additives on the Microwave Dehydration
Experimental study on the dehydration characteristics and
2021年5月1日 The structural characteristics of dehydrated lignite are crucial for the subsequent readsorption thermochemical conversion, but it is challenging in enhancing their relationship for dehydration Dehydration is a necessary link for lignite upgrading, and evaporative dehydration is one of the most effective dehydration technologies for lignite Kinetics, as a fundamental requirement of nearly all industrial activities and engineering research, plays a great role in lignite evaporative dehydration In this paper, the occurrence state of moisture in lignite and the process A review of kinetic studies on evaporative dehydration of lignite2021年5月1日 The dehydration of lignite is a process in which the pore size increases and the specific surface area gradually decreases, and the pore size is mainly 20–56 nm In a typical nonisothermal drying process of lignite reported by Slyusarskiy et al [20], Experimental study on the dehydration characteristics and 2022年4月15日 Dehydration of lignite primarily occurs in two stages, namely, removal of surface moisture and decrease in oxygencontaining functional groups and moisture stageAssessment of the moisture storage characteristics of lignite
Effect of moisture on dehydration and heat transfer characteristics
2016年6月15日 Dehydration of lignite primarily occurs in two stages, namely, removal of surface moisture and decrease in oxygencontaining functional groups and moisture stage Moisture on the lignite surface could be removed at temperatures below 100 °C2021年3月30日 DOI: 103390/EN Corpus ID: ; The Influence of Opencast Lignite Mining Dehydration on Plant Production—A Methodological Study @article{Pepliski2021TheIO, title={The Influence of Opencast Lignite Mining Dehydration on Plant Production—A Methodological Study}, author={Benedykt Pepliński and Wawrzyniec Czubak}, The Influence of Opencast Lignite Mining Dehydration on Plant 2018年4月15日 Process characteristics, dehydration kinetics, and moisture diffusion coefficient results showed that the higher the cationic valence, the weaker the promotion effect of additives on lignite Improving physicochemical properties of upgraded Indonesian lignite The dehydration of a homogeneous cubic sample of ‘woody’ lignite at ca 290 K follows a modified contracting cube equation, dp/dt=k(1 –α)2/3(1 –β), in which k is a constant, α is the fraction of the sample dehydrated and β is the ratio of the vapour pressure of water at time t compared to its saturated value The rate depends on the competitive evaporation and condensation of water The kinetics and mechanism of lignite dehydration
Enhancement of microwave absorbents on quality of microwave
Taking lignite semicoke and activated carbon as microwave absorber,using microwave drying equipment,the experimental study of Xilin lignite on microwave drying and dehydration is carried out,and the effects of microwave absorber on lignite mois ture dehydration in The dehydration process of lignite was well fitted by the logarithmic model For the solid products, as the promotion effect on the dehydration process of lignite increased, the structure tended to be stable, the content of harmful gas released by combustion was reduced, and the surface hydrophobicity was enhanced[citation report] Properties of Upgraded Shengli Lignite and Its 8、Enhancement of lignite microwave dehydration by cationic additives,FUEL,,电气与动力工程学院党委、电气与动力工程学院 9、Promotion effect of activated carbon,coal char and graphite on lignite microwave dehydration process,JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,新能源学院 Hohai University2021年3月30日 Lignite is widely used in the generation of electricity and is considered to be an abundant resource World reserves of lowrank coals (LRCs) such as lignite amount to 200–280 billion Mg (Gt) and account for 20–25% of global coal reserves [1–4] With this background, the utilization of lignite for energy production is expected to remain a The Influence of Opencast Lignite Mining Dehydration on Plant
Drying characteristics and kinetics analyses for Yimin lignite at
2020年2月20日 This review paper is very beneficial to the lignite upgrading processing industry as it contributes to an indepth understanding of the lignite evaporative dehydration process, and helps to 2015年7月9日 Dehydration of lignite in advance can improve the quality of the coal, reduce the transportation cost, and increase the thermal boiler efficiency [2][3][4][5] Comparison of Drying Methods on Physical and Chemical Study on the Feasibility of Recycling Condensate Water of Lignite by Microwave Dehydration Treatment Huixiang Tang Zhengwen Huang Mingzhou Shen Zhi Hua Wang Junhu Zhou K Cen Environmental Science, Engineering 2014; As a lowrank coal, the high moisture content of lignite need to be dehydrated and refined before combustionLignite resources and utilization outlook in ChinaHesas, The effects of a microwave heating method on the production of activated carbon from agricultural waste: a review, J Anal Appl Pyrolysis, № 100, с 1Promotion effect of activated carbon, coal char and graphite on lignite
The Influence of Opencast Lignite Mining Dehydration on Plant
2021年3月30日 Location of coal deposits and cones of depression in the district of Konin as of 1996 Source: Map from [113] Map legend: 1lignite opencast mines and a level of the drainage of coal bed; 2 2023年7月4日 The lignite would undergo dehydration cracking at normal temperature, which has an important impact on the stability of coalrock slope in openpit mineExperimental investigation on acoustic emission and damage to dehydration cracking in different ligniterelated engineering geological fields, is discussed in this paper KEY WORDS: Lignite reservoir, Lithotype, Lowrank coal, Pore–fracture system, Erlian Basin, Dehydration INTRODUCTION Lignite is prone to cracking after it undergoes weathering in openair environments The instabilityInfluence of Composition on Differential Evolution of 2017年12月15日 When the temperature reached 140 °C, the dehydration of lignite at different heating rates were nearly equal The dehydration of coal samples decreased with the increase of heating rate at same temperature In addition, the initial drying rate of lignite was low, which rose as the temperature increased ThisDrying, readsorption characteristics, and combustion kinetics
Experimental study and energy analysis on microwaveassisted lignite
2019年1月21日 The results indicated that lignite microwave drying was divided into three stages: incubation stage, highefficient dehydration stage, and deep dehydration stage It was in agreement with the