Mine dust production and harm

In the process of coal mining, large-scale machinery and equipment are needed to cooperate with the operation, and the mechanical equipment will crush the coal mine and rock layer in the process of drilling, drilling and blasting, and driving the tunnel, and the coal mine and rock will be crushed into fine particles of solid floating in the air, that is, become dust. With the continuous expansion of the scale of mine mining, the level and efficiency of mechanized operations are getting higher and higher, and the content and concentration of dust are also getting higher and higher. When the concentration of coal mine dust is close to the explosion concentration, explosion accidents are easy to occur, posing a serious threat to personal and property safety. Therefore, coal mining enterprises must fundamentally control dust in the mining work. In order to provide a strong guarantee for the safety of mining personnel and property.

The deposition of dust in the process of coal mining will cause serious harm and adverse impact on mining equipment, personnel and the surrounding environment. Therefore, coal mining enterprises and related units should realize the harm of dust in order to carry out fundamental control. Dust will cause serious harm in three aspects: First of all, for the production equipment with high precision, the depth of dust will seriously affect the performance of the instrument and equipment, but also the loss of the instrument interior, reduce the service life; Secondly, too much coal dust can easily lead to coal dust explosion. In the process of work, if there is too much coal dust in the air, when it reaches a certain value, if it encounters a heat source, it will explode, and the explosion power is huge, which will cause great harm to the personal safety of the staff, and cause serious damage to the places around the mine, and cause serious adverse effects on the surrounding environment. Finally, in the environment where coal mine dust exists for a long time, the physical condition of the staff will be adversely affected. Some coal mining workers who work underground for a long time are prone to respiratory and lung diseases such as pneumoconiosis, mainly because of excessive dust in the process of work and inadequate protection work, resulting in excessive dust inhalation in the body and lung damage. Treating illness would put more of a financial burden on workers.

In the process of coal mining, according to the causes of dust and different places, dust can be divided into the following categories: in the process of coal mining and processing, the granular solid produced by external extrusion of coal is generally called coal dust; Construction equipment and materials in the process of coal mining wear or dust, which is called dust; Coal particles suspended in the air are generally called floating and sinking; Dust deposited on the ground or equipment surface due to large particles or gravity is called fallout. Coal mine dust generally has the following characteristics: dust dispersion is large, due to its contact with the air resulting in physical and chemical reaction between the surface and oxygen, dust is oxidized and decomposed, and the movement is intensified; The surface of coal mine dust will combine with air to form a thin air film during the floating process, which will protect the dust, reduce the combination probability of dust and water droplets, and prevent dust settlement. A large amount of dust generated in the process of coal mining will have its own electrical property, actively attached to the surface of the object, and it is not easy to be removed and cleaned up.

Xuzhou Botai Mine Safety Technology Co., LTD., aiming at the mine dust environment, combined with its many years of dust control experience, has successfully developed mining foam dust suppression technology, mining water mist efficiency enhancing dust removal technology, mining pneumatic wet port dust removal device, mining geomagnetic jet dust removal device, which has been widely used in the field of mine dust environment control, and has achieved very significant results.