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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.
·Frias et al [63] further integrated thermal and chemical activation through calcinating coal gangue with ZnO As one of chemical activator for clay mineral ZnO has the duality function of strengthening and inhibiting hydration process On the one hand adding ZnO favors disaggregation of phyllosilicate aggregates and formation of long fiber
·Coal gangue hill a significant anthropogenic interference can cause various forms of land degradation The promoting effect of coal gangue on soil qualities has also been discovered However few studies investigated the soil properties and microbiome of prolonged gangue hills Here we investigated soil microbial communities and chemical properties in a
·In particular when adding 1000 g of coal gangue the chemical properties organic matter total N total P total K available N available P of the planting substrate improved significantly This finding might be because coal gangue contains more organic carbon and weathering nutrients than soil Tripathi et al 2016
·In order to effectively utilize coal gangue and its calorific value 4180 12 540 kJ/kg coal gangue was converted into energy saved cement by activating at 800 °C with an integrated thermal and chemical activation with XRD and NMR indicates that improved pozzolanic reactivity for coal gangue contributes to the mineral phase change
·It indicates that the chemical reactions between coal gangue and different biomass during the pyrolysis process directly affect the physicochemical properties element composition specific surface area and porosity of biochar
·Therefore the interactions between water and coal gangue includes physical and chemical interactions which have the potential to change the microstructure and mineral composition of coal gangue
·The acid pollution produced from coal gangue piles is a global environmental problem Terminal technologies such as neutralization precipitation adsorption ion exchange membrane technology biological treatment and electrochemistry have been developed for acid mine drainage AMD treatment These technologies for treating pollutants with low
·Corresponding Author Yun Zou [email protected] School of Chemistry and Chemical Engineering Guangxi University Nanning P R China Correspondence to Y Zou School of Chemistry and Chemical Engineering Guangxi University Nanning 530004 P R China E mail [email protected]; or Z Chen Guangdong Key Lab of Water and Air Pollution
·The chemical composition of coal gangue varies across regions which may affect the generalizability of the findings Additionally the long term performance and durability of the materials under different environmental conditions were not extensively studied Future research should explore the use of coal gangue from various sources conduct
·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 %
·With the continual advancement of coal resource development the comprehensive utilization of coal gangue as a by product encounters certain constraints A substantial amount of untreated coal gangue is openly stored particularly acidic gangue exposed to rainfall The leaching effect of acidic solutions containing heavy metal ions and other
DOI / Corpus ID 93276171; Improvement on pozzolanic reactivity of coal gangue by integrated thermal and chemical activation article{Li2013ImprovementOP title={Improvement on pozzolanic reactivity of coal gangue by integrated thermal and chemical activation} author={Yu Li and Yuan Yao and Xiaoming Liu and Heng hu Sun and Wen Ni}
·Abstract Coal gangue CG which is mainly generated during coal excavation mining and coal washing is an industrial solid waste that is recognized as an environmental pollutant College of Materials Science and Chemical Engineering Harbin Engineering University Harbin China Key Laboratory of Superlight Materials and Surface
·The chemical composition of coal gangue and other mature admixtures such as slag and fly ash were analyzed by XRF Table 2 illustrates the results The three admixtures are similar in chemical composition and have more silicon and aluminum oxides; thus coal gangue has potential activity which is worthy of excitation and research The coal
·Abstract A cultivating indoor experiment was conducted to study the effect of high sulfur coal gangue on chemical indices pH EC ESP and exchangeable Na of soda saline soil four kinds of fineness and four kinds of applying rates were used The
·coal gangue based silicon fertilizer and its reliability veri ed thereby providing a theoretical basis for use of coal gangue based silicon fertilizer in agriculture Materials and methods Materials Coal gangue The coal gangue used in the experiment comes from the Shendong mining area in Inner Mongolia China with an ash content of %
·Coal gangue a waste produced during coal mining has been regarded as the largest source of industrial waste in China It is estimated that the production of 1 t coal generates t coal gangue [1] and the total stockpile of coal gangue exceeds 6 billion tons in China [2] [3] The coal gangue not only occupies agricultural land in large areas but triggers
·All the CGs in the figure are dried in an oven at 60 °C and ground CG1 is Hebei coal gangue which comes from a coal gangue processing plant in Xingtai Hebei Province It is brownish black powder after drying and grinding CG2 is Shanxi coal gangue from Shanxi Geology Group Co Ltd
·For high added value utilization of alumina rich coal gangue ARCG a mild hydro chemical process was investigated to extract alumina The influences of NaOH concentration mass ratio of alkali to gangue reaction temperature and reaction time were systematically studied An alumina extraction rate of % was achieved at the condition of
When corn stalk powder alone was added the oxides of the corn stalk ash participated in the chemical reaction involving coal gangue forming nepheline K Na K 3Al4Si4O16 and other silicates with available Si content of % When coal gangue CaCO3 and corn stalk powder were mixed and calcined the available Si content was as high as 22
·Coal gangue is a solid waste discharged during coal mining which not only occupies large land resources but also brings about certain risks to the environment The alumina and silica minerals in coal gangue are the major resources and difficult to separate from each other which hinders the resource utilization of coal gangue The catalytic effect of various
·Co combustion is a technology that enables the simultaneous and efficient utilization of biomass and coal gangue CG Nevertheless the factors that affect the combustibility of co pyrolytic char
·Coal gangue is one of the industrial solid wastes that may harm the human body through the ecosystem for a long time Using coal gangue in geopolymer preparation can effectively reduce cement output and meet the sustainability requirements In this paper the physical and chemical characteristics including the heavy metal content of coal gangue from
·alumina extraction coal gangue hydro chemical process phase transformation Author for correspondence Changsheng Shi e mail northinstitute This article has been edited by the Royal Society of Chemistry including the commissioning peer review process and editorial aspects up to the
·Equations 1 3 show the kaolinite calcined chemical reaction Coal gangue has a low temperature activation zone between 500 °C and 800 °C [39 57 58 59 60] and it has the highest activity when the calcination temperature is 700 750 °C As the continuous temperature increased mullite appeared at 1000 °C and it has no hydration and
·Therefore this study systematically investigated the basic physical and chemical properties of coal gangue and municipal sludge samples the ecological environment safety risk of heavy metals and
Download scientific diagram Chemical composition of Coal Gangue 1 4 % from publication Study on the Effectiveness of Sulfate Reducing Bacteria Combined with Coal Gangue in Repairing Acid
