Study of the technology of heat pipe on prevention wildfire

The experimental results show that the HP can accelerate the heat release in coal gangue pile. The coal temperature could be controlled at 59.6 ˚ C with HP in 7 h and the highest cooling value is 39.4 % with HP in 150 h, which can effectively cool the temperatures of high temperature zones.

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Paecilomyces Sp. | Scientific.Net

A BJKD1 strain isolated from coal gangue piles was identified as a member of the Paecilomyces sp., which can tolerate to 3200 mg/L Cd2+. Favorable condition for BJKD1 growth was at pH 4.0-9.0. The presence of heavy metals, such as 36 mmol/L Cd2+, 1 mmol/L Cu2+, 80 mmol/L Zn2+, 7 mmol/L Ni2+ and 100 mmol/L Mn2+, retarded the growth of BJKD1

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The Environmental Geochemistry of Trace Elements and

The properties of coal gangue. The main chemical compositions of coal gangue are SiO 2, Al 2 O 3, Fe 2 O 3, and CaO, which occupies 58, 24, 7 and 5 wt.%, respectively.According to the basic requirements for brick materials reported by Raut et al 22, these coal gangue accumulated in Huainan Coalfield is a suitable raw materials for brick making.

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Capstan Winch Models | Capstan and Winch Modles Wiki

2019/08/20 · Capstan Winch Models include winch and capstan classification by Excellent Winch Factory, help you choose a correct type of winch for your business. Common types of winch in coal mine Right here in this winch factory blog post, we provide you some capstan winch models for …

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China Climate Change Partnership Framework

coal-gangue brick sector as firstly, a way to reduce the sector’s greenhouse gas emissions and hence reduce its impact in terms of climate change, while at the same helping coal-gangue brick enterprises to reduce operational costs by reducing their energy bills, and hence increase their profits.

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PDF Microsoft Word - Ppr2015.0303-RongkunPan.doc

When Coal gangue hill was piled up in the open air, and weathered into finer particles, it Especially, the coal gangue happened spontaneous combustion or explosion frequently, it had caused massive

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APES Ch. 14 Flashcards | Quizlet

a pile of gangue, pile of the waste part of the ore. open pit mining. a type of surface mining, used mostly to mine coal on mountainous terrain, shovel cuts a

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Chinese power plant explosion kills 21 - World Socialist Web

2016/08/15 · The power plant uses coal gangue, also known as low-calorific coal, which is a waste product from the mining and processing of coal. Although coal gangue has …

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Soil characterization and differential patterns of heavy

coal gangue piles is 36 m. In some regions where the slopes are greater than the natural repose angle, collapse and soil erosion frequently occur. Coal gangue is piled layer by layer with the age of the deposits piling years ranging from more than 40 years at the bottom to only 8 years on the surface. The natural vegetation on the

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Gangue - Wikipedia

In mining, gangue (/ ɡ æ ŋ /) is the commercially worthless material that surrounds, or is closely mixed with, a wanted mineral in an ore deposit. It is thus distinct from overburden , which is the waste rock or materials overlying an ore or mineral body that are displaced during mining without being processed, and from tailings , which is rock already stripped of valuable minerals.

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Study on the E Bacteria Combined with Coal Gangue in

Preliminary test results show that the spontaneous combustion coal gangue of Gaode coal mine in Fuxin has a certain adsorption e ect on Fe and Mn in AMD, and the removal e ect is as follows: SRB combined with spontaneous combustion coal gangue > NaOH modified spontaneous combustion coal gangue > unmodified spontaneous combustion coal gangue [24].

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Assessment of heavy metal in coal gangue: distribution

In the process of excavation and utilization of the coal gangue hill, gangue at different weathering degree was exposed to the environment, which can be harmful to the surroundings. In order to find the law of heavy metal release and to

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Enrichment of heavy metals in coal gangue by puff balls and

Coal gangue is the solid waste in coal production and preparation. The coal gangue yield is 10%–30% of the raw coal. According to incomplete statistics, the annual gangue discharge is 1.5×108–2.0×108 tons in China (Su et al

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Characterization of Heavy Metals from Coal Gangue | SpringerLink

Coal gangue, a residue obtained during the coal mining process, accounts for 10–15% of raw coal produced. Usually, this coal gangue is transported and stacked loosely in the nearby areas. Long term piling up of this mine waste can volatilize large amounts of potentially toxic heavy metals which have the ability to infiltrate surrounding

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Effects of soil properties on vegetation restoration in coal-gangue pile

Vegetation restoration of coal-gangue pile is the most important part of the mine reclamation, and is one of the hotspots in studies of degradation ecosystem and restoration ecology.

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Coal 'trash' turned into treasured material

2020/12/31 · A by-product of the coal mining industry, coal gangue has long been a major pollutant. In Huainan, a city of East China's Anhui province that serves as a primary coal production base, coal gangue

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Reclaiming Subsidized Land: An Evaluation of Coal Gangue Interlayers

Soil and coal gangue water content in different interlayered soil profiles are shown in Figure 7. With This indicated coal gangue has poor water holding capacity creating a hydrological discontinuity.

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PDF) Coal/Gangue Recognition Using Convolutional Neural

2020/04/24 · Recognition and separation of Coal/Gangue are important phases in the coal industries for many aspects. This paper addressed the topic of Coal/Gangue recognition and built a …

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PAPER OPEN ACCESS Thermogravimetric analysis of

gangue is now mixed with petroleum coke.Coal gangue is industrial solid waste that is washed out during coal washing [6-7], which has low calorific value, low volatile …

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Release characteristics of heavy metals from coal gangue

Keywords: Coal gangue, Heavy metal, Leaching simulation, Release rate 1. INTRODUCTION Coal gangue is an inevitable byproduct in the process of coal mining. With the development of the coal mining industry in recent years, the heavy-metal pollution from the coal gangue is paid more and more attention (Zhang et al., 2009; Sun, 2005; Sun et al

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