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A new generation of high-efficiency coarse and medium-fine crushers: CI5X series impact crushers
·In this paper a new preparation technology is developed to make high alumina coal gangue HACG auxiliary cementitious admixture by calcining HACG Ca OH 2 CH mixture HACG powders mixed with 20 wt % CH were calcined within a temperature range of 600 900 °C and the thermal transformation and mineral phase formation were analyzed The hydration
·Coal gangue is waste rock obtained from coal mining and processing China is a large coal resource country with a large quantity of coal gangue [1] On the one hand according to Chinese statistics 6 7 billion tons of coal gangue has accumulated over the years with an increasing rate of 200 million tons per year resulting in vast land occupation in mines severe
·Advance as shown in Fig 2 Coal gangue and y ash are mostly composed of SiO2 and Al2O3 and the content of other components was slightly dierent Large pieces of coal gangue were bro ken with the crusher; the four particle sizes required for the test were screened by a standard vibrating sieve and then mixed with dierent concentrations of
·Backfilling is widely used to control surface subsidence and stope stability to improve pillar recovery Furthermore it is also an effective way to process and dispose of mining waste such as coal gangue and tailings In this study the hydraulic mechanical properties of cemented paste backfill materials CPB were investigated Twenty eight cemented coal
·gangue、：n [] 。【gangue】、、 gangue composition has no impact on pellets「oxidation process but has markedly impact on roasting
·This study examines the particle size and distribution of the main chemical components of gangue during the crushing process Coal mine gangue was chosen as the research object and its particle size and chemical components at various crusher discharge settings were examined through screening grinding chemical composition testing and other
·The presence of pyrite poses a significant impediment to the comprehensive utilization of coal gangue which is a prevalent solid waste in industrial production However the current efficacy of jig separation for pyrite in fine grade coal gangue remains unsatisfactory To investigate the influence of particle size distribution on the jig separation of pyrite in fine grade
The zinc ore crusher is a machine that is designed to crush or break the zinc ore into smaller pieces The crusher can be used for both primary and secondary crushing of the zinc ore The primary crushing process is usually carried out using a jaw crusher while the secondary crushing is done using a cone crusher or impact crusher Zinc Ore Crusher
·The disposal and utilization of solid waste of coal gangue is one of the main problems in coal mining in China Injecting coal gangue into goaf in the form of slurry can effectively solve the
The PCZ heavy hammer crusher has a larger feed size ≤1 000 mm The discharge particle size is fine The capacity can reach 3 000 t/h which is three times that of the impact crusher making it an ideal choice for large scale crushing production lines
·About Centbro STM Henan Centbro Machinery STM Equipment Co Ltd sepecializes in the production and sales of mining machine and equipment Jaw Crusher Impact crushers Cone Crusher Sand making machines ball
·Therefore a specially designed jaw crusher was used to crush the coal gangue The mechanism was activated when the working face was advanced and the roof pressure was gradually applied to the backfill The stress meters were installed on the floor as shown in Figure 9 b Before the stress meters were installed the floor was cleaned and
·This paper provides an overview on the current status of power generation in China using coal gangue The government regulation towards the use of coal gangue for power generation is introduced
·Many researches on coal gangue are aimed at increasing its activity by many methods together such as thermal mechanical and chemical The methods are so complex that they are difficult to be adopted by some companies In this paper considering the low strength requirement of cement mortar the activity of coal gangue is more evidently shown by Ca OH 2
·To address the issues of complex algorithm models poor accuracy and low real time performance in the coal industry s coal gangue sorting a lightweight real time detection method called YOLOv8s GSC is proposed based on the characteristics of coal gangue This method incorporates the ghost module into the YOLOv8s backbone network to reduce the
·As a massive solid waste the high value added utilization of coal gangue has received more and more attention in China This study focuses on the utilization of coal gangue aggregate in railway engineering for coal transportation passage Coal gangue aggregate was employed as high grade railway subgrade filler andprepared concrete for roadbed drainage
·The results were applied in optimizing an industrial scale crushing system and two toothed roll crusher of a coal gangue fired power plant Investigations demonstrated that the PSD can improve the
Coal gangue The coal gangue CG used in this study is untreated raw coal gangue sourced from Lingshou County Hebei Province China Its appearance mostly presents as flakes or blocks of black gray rocks and the shape and size of CG vary then crushed and ground using a crusher particle size range 30 100 μm Subsequently the
·This research investigated the ability of the adaptive neuro fuzzy inference system ANFIS to simulate the effects of throw eccentric speed closed side setting and the size of the particle on crusher output and resolved that the model fostered was a suitable instrument for the onsite cone crusher assessment
·After being crushed with a jaw crusher sieved classified and blended coal gangue coarse aggregates S and R with 5 ∼ 20 mm of continuous gradation were obtained Natural gravel N was obtained from local quarries The two types of coal gangue coarse aggregates used in this study have different grain shapes densities and crushing
·This study investigates the fractal characteristics of the particle size and shape distribution of gangue powder in the "jaw crushing ball milling" process using mudstone gangue For this fractal theory laser particle size analyzer scanning electron microscope and other mesoscopic research methods were introduced This study has several main factors including
·The technology of cemented coal gangue fly ash backfill CGFB mixture of binder coal gangue fly ash water and additive if necessary is introduced and utilized in this mine to dispose both waste and gob The crusher used in the field is shown in Fig the chamber can move forward with the advance of the mining face and thereafter
