The diffusion and flow laws of coal gangue slurry under the same inclination angle were summarized, and the field test of fluidization filling in the caving areas was conducted. The results show that: (1) The water-to-gangue ratio was the main controlling factor for the conveying performance of coal gangue slurry. The extensibility, slump, and ...
The cemented coal gangue backfill (CGB) in coal mining is normally made of gangue (particle size of 0–15 mm), fly ash, cement, and water. In this study, the effects of the weight content (ranging from 20% to 60%) of fine gangue (0–5 mm) on the microscopic characteristics, resistivity, and compressive strength of CGB were investigated at 3 d …
Gangue, produced from coal mining and washing process, is a serious threat to the ground environment. Gangue backfilling mining method can solve this …
This chapter discusses the methodology for characterisation and identification of the minerals defined and selected in Chap. 133 as common gangue minerals. As shown in the compilation presented (Table 134.1), the very low reflectance of most gangue minerals (either measured or reckoned by the Fresnel equation) distinguishes them …
The earliest known use of the noun gangue is in the early 1700s. OED's earliest evidence for gangue is from 1712, in a translation by John Browne, surgeon, et al. gangue is a borrowing from French.
However, a significant strength loss (~33.6%) was recorded upon further increase of the replacement ratio to 45%. In comparison with blended cement prepared with higher [25,37, 38], the later ...
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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 does not affect gangue activation. ...
In this study, the effects of the weight content (ranging from 20% to 60%) of fine gangue (0–5 mm) on the microscopic characteristics, resistivity, and compressive strength of …
معنی gangue - معانی، کاربردها، تحلیل، بررسی تخصصی، جمله های نمونه، مترادف ها و متضادها و ... در دیکشنری آبادیس - برای مشاهده کلیک کنید
This paper provides a low-cost and highly reliable method for coal and gangue classification as well as facilitating the automation of coal and gangue …
Coal gangue is a by-product of coal mining and characterized by the low heating value. The circulating fluidized bed combustion (CFBC) is perhaps the most effective ways to utilize coal gangue [1,2,3].However, the drawbacks of difficult ignition and instable flame limit utilization of coal gangue [4, 5].Weathered coal, as a low grade coal, …
This chapter discusses the methodology for characterisation and identification of the minerals defined and selected in Chap. 133 as common gangue minerals.
gangue, the force on the gangue will increase linearly until it equals to the gravity of overlying strata in water-conducting zone. The axial load is increased to 100 kN by 0.5kN/s loading rate. ...
gangue mixing ratio in coal seams with a simple structure, but also accommodate complex structure coal msaes 32,34. In order to achieve the objective of real-time and accurate recognition of the ...
2.2 Experiment. The chemical composition measured by Bruker S8 TIGER XRF analysis; the mineralogical composition measured via Bruker D8 ADVANCE XRD analysis; thermal analysis conducted with Mettler Toledo analyzer in a temperature range of 30–1000 °C at a heating rate of 10 °C/min and N 2 or O 2 atmosphere.. Mortar strength …
The most common gangue minerals have been selected in Table 133.1, identifying them with the same symbols (abbreviations) as in Annex 1.3 (Gangue). As Table 133.1 shows, most of the gangue species are classified in only two of the Berzelius classes, namely (in approximate order of decreasing abundance and noting the main …
Sensors 2023, 23, 5140 3 of 19 frame was less affected by the size of the ground truth bounding box, resulting in im-proved robustness of the model. Unlike l2 loss, DIoU loss directly minimized ...
The low-cycled repeated loading experiment was carried out for gangue aggregate concrete middle joints with coal gangue aggregate replacement rates 0, 30%, 50%, 70%, .
To investigate the influence of gangue left in goafs on the low-temperature oxidation characteristics of coal, the variations of gas products and free radical …
When 30% gangue was used to substitute cement, the compressive strength of gangue-cement hardened paste at 28 days was 47.6 MPa, which was higher to 23.2 MPa than that of unirradiated gangue. View ...
The cemented coal gangue backfill (CGB) in coal mining is normally made of gangue (particle size of 0-15 mm), fly ash, cement, and water. In this study, the effects of the weight content (ranging ...
Gangue-based backfill cementitious materials (BCM) are widely applied due to their low CO2 footprint, while the application is restricted by gangue's low reactivity. In this study, dry chemical ...
مشاهده محصولات قابل تامین . معرفی تولید مواد شیمیایی. تولید مواد شیمیایی که اغلب به عنوان ستون فقرات صنایع مختلف از آن یاد می شود، شامل تبدیل مواد خام به مجموعه وسیعی از محصولات ضروری است. این محصولات از داروها و کودها ...
"gangue" published on by null. The Oxford Biblical Studies Online and Oxford Islamic Studies Online have retired. Content you previously purchased on Oxford Biblical Studies Online or Oxford Islamic Studies Online has now moved to Oxford Reference, Oxford Handbooks Online, Oxford Scholarship Online, or What Everyone Needs to Know®. For …
raw gangue were kaolinite, and a small amount of carbon-based compounds and metakaolin were almost the only phase in calcined gangue. After thermal treatment and depending on the temperature, it showed very high reactivity especially com-bined with limestone. The strength property of limestone calcined gangue cement
This chapter addresses the concept of gangue minerals, as an unavoidable company of ores, and comprises some introductory remarks to address the difficult …
The diffusion and flow laws of coal gangue slurry under the same inclination angle were summarized, and the field test of fluidization filling in the caving areas was conducted. The results show ...
Downloadable! Coal gangue-based geopolymer (CGGP) is one of the hot spots existing in the recycling of coal gangue resources due to its good comprehensive mechanical properties. However, the coal gangue structure is stable and reactivity is poor, so the coal gangue needs to be activated before utilization. In this paper, the microstructure …
