Available on demand until November 28, 2024. Learn more REGISTER. View more. Every piece of equipment that transports or processes coal creates some level of particulate matter. Having a strategy ...Web

The two main uses of coal are for power generation and steel production. In order to yield the highest thermal and financial benefits when shipping direct, the coal is often crushed to 2" x 0 to maximize the haulage capacity of trucks and trains. It is then transported to power plants and steel plants with minimal loss of volume.Web

@article{osti_269241, title = {Relationships between coal properties and respirable dust generation potential}, author = {Srikanth, R and Zhao, R and Ramani, R V}, abstractNote = {A two-part study was conducted to understand the factors affecting respirable dust generation potential or dustiness of coal seams. In the first part, the …Web

Airborne dust generation is one of the byproducts of coal mining, processing, and handling. The amount of airborne total dust (ATD, respirable size and larger) and airborne …Web

sequence and delay timing on dust generation during blasting in the surface coal mines. 1.0 INTRODUCTION Dust is produced in all rock-breaking processes and the quantity of potentially airborne dustWeb

Coal crushing equipment of coal handling plant system in the thermal power plant is very important for Plant efficiency improvement. Keywords: ... large Coal into smaller Coals, gravel, or rock dust. crushers are machines which use a metal surface to break or compress materials. Mining operations use crushers, commonlyWeb

Mechanical external forces (for example coal cutting by a shearer) lead to the crushing of coal, which causes the covalent bond rupture in the coal molecular structure and the generation of a large number of free radicals. This statement stems from the theory of free radical reaction in CSC (Li, 1996; Li et al., 2016).Web

From the perspective of the physical and chemical properties of dust in mines, the wettability of copper mine blasting dust is mainly controlled by particle size and pore structure (Jin et al. 2021).A molecular dynamics simulation study indicated that larger coal dust particle has higher wettability (Zhang et al. 2021).A novel chemical composite …Web

Air pollution, especially particulate matter has been a cause of detrimental health effects including increased mortality and morbidity (Kim et al., 2015).Coal crushing is done for reducing the size aggregates of coal for transportation after mining is an integral auxiliary system of the coal industry (Zhang and Mao, 2017), but this process attributes …Web

The generation of coal dust around conveyer systems and transfer points is a problem for operators of coal mines, coal plants and similar facilities. Coal dust is a contributor to lung disease and ...Web

Disadvantages: Not ideal for high moisture coal (exceeding 10%), easy to clog, not fine discharging particle size, dust pollution 6. Mobile coal crusher Compared with the above fixed coal crusher types, the mobile crusher (also called the mobile crushing station) can move freely and can be easily moved around harsh sites or work sites.Web

Homogeneous sample incombustible fractions were used to estimate the mass of coal dust in mixtures with rock dust. The coal dust mass estimation method was applied to airborne dust samples acquired in an underground coal mine downwind of a scrubber. The weighing procedures and coal dust mass estimation methods are described in what follows.Web

Dust is the major air pollutant in opencast coal mining areas (CMRI 1998; Vallack and Shillito 1998).Singh has reported haul roads to produce 0.25–0.70 kg of dust per kilometer travel of a dumper.Ghose and Majee reported a total generation of 9.4 t dust per day as a result of whole mining operation in an opencast mine of Jharia Coalfields, of …Web

The major aim of this research is to de- velop a fundamental understanding, based on the most up-to-date scientific principles of fracture mechanics, of how fine fragments of coal (respirable dust) are generated during a fracture process. The present knowledge of the basic mechanics of this process is meager at best.Web

Coal mining and processing involve multiple dust generation processes including coal cutting, transport, crushing and milling etc. Coal dust is one of the main sources of health hazard for the coal workers. Exposure of coal dusts can be prevented through administrative controls and engineering controls. Ineffective control of coal dust …Web

Using a Pin Mixer to De-dust Coal. One of the most common methods of dealing with substantial amounts of coal dust is through the use of a pin mixer. Pin mixers provide a quick and cost-effective solution to coal dust, suppressing dust by mixing it with a binder (or simply just water) at high speeds in order to form small granules in a process ...Web

Coal mining and processing involve multiple dust generation processes including coal cutting, transport, crushing and milling etc. Coal dust is one of the main sources of health hazard for the coal workers. Exposure of coal dusts can be prevented through administrative controls and engineering controls.Web

The impact crushing dust generation method, which attributes coal dust generation to a single variable, i.e. energy, avoids the interference terms such as the conical pick angle, depth and rotating dust in the cutting process and can well reflect the …Web

To reveal the influence of pore structure of coal on the characteristics of coal dust generation during roadheader cutting, a self-developed coal cutting system was …Web

This research was conducted to identify the facets of airborne respirable dust liberation from the coal product. Laboratory crushing experiments were conducted on a range of low to …Web

The impact crushing dust generation method, which attributes coal dust generation to a single variable, i.e. energy, avoids the interference terms such as the …Web

Airborne dust generation is one of the byproducts of coal mining, processing, and handling. The amount of airborne total dust (ATD, respirable size and larger) and airborne respirable dust (ARD) …Web

or crushing process yields total and respirable dust generation rates that increase with coal rank. It is important to note that these results were measurements of dust in the product and not measurements of airborne dust. In the mining and roll crush- ing of coal there is much less regrinding (Organiscak and Page 1998; Ramani et al. 1987).Web

Zhang et al. found that the airflow velocity distribution, the dust migration trajectory, and the influence of airflow on dust diffusion when cutting coal with downwind differs from those when ...Web

Laboratory crushing experiments were conducted on a range of low- to high-volatile bituminous coals to investigate the various factors influencing airborne respirable dust (ARD) generation. This research was conducted to identify the principles of ARD liberation from the coal product.Web

The layer of coal plays a substantial role in dust generation; the thicker the coal seam causes higher RCMD concentration. ... the thinner coal seam leads to more crushing of the surrounding ...Web

Airborne dust generation is one of the byproducts of coal mining, processing, and handling. The amount of airborne total dust (ATD, respirable size and larger) and …Web

improving coal mine dust suppression. described by their inherent moist fuel ratio (MFR ö (fixed Prior research has identified several relationships between carbon ÷ volatile matter) ÷ inherent moisture), also produced coal rank and dust generation. Laboratory coal comminution more airborne dust [Page et al. 1993]. Although the generalWeb

However, wetting agent addition alone did not lower the dust generation rate from coal. For a given moisture content, the wetting agent influenced the particle size distribution of dust generated during impact crushing differently between types of coal. For the three coal types investigated, wetting agent addition reduced the concentration of ...Web

Coal is a prime source of energy for India and it will continue to maintain its lead for the foreseeable future. Dust is an accepted fact for almost every operation in coal mining. Many processes can be pinpointed as contributions to dust generation like drilling, blasting, haul roads, coal cutting byWeb