METHODS OF SUPPRESSION OF DUST EMISSION
Publication Date: 2003-May-16
The IP.com Prior Art Database
Abstract The present concept relates to methods for suppressing dust emission during the mining process. These processes include first preparing an aqueous solution including a surfactant then applying the mixture to the material from which the dust emissions are desired to be suppressed, including directly to the blasting location, to the material that results from the blasting, both immediately following the blasting and also during the transportation of the material.
 One problem that occurs during the mining process is during the transportation of material from the mine face. After the material has been blasted and is being loaded onto trucks for removal a large amount of dust is generated. The dust that is released into the atmosphere creates a multitude of problems.
 The dust causes a decrease in visibility at the site, which itself results in a variety of problems. These include an increase in the risk of accidents. To avoid such accidents, work must stop to allow for the dust to settle and visibility to improve. The work stoppage increases the time required for loading the trucks, resulting in an inefficient process.
 Dust in the atmosphere around the mines also poses health risks to the mine operators. Inhalation of dust particles may result in a variety of illnesses, particularly respiratory illnesses. These include asthma, pneumoconiosis, silicosis, berylliosis, baritosis, siderosis, stannosis, and lung cancer.
 Suppressing dust emissions will provide a more efficient mining process and will help prevent the dust associated lung disorders with which workers may be afflicted. Therefore, there is a need to provide a method of suppressing dust emissions, particularly during mining operations.
 The present concept provides methods of suppressing the dust emissions during mining processes, thereby improving the efficiency of the processes as well as reducing the amount of dust to which the mine operators are exposed. The method includes a variety of different processes which may be used individually or in combination with one or both of the other processes.
 One aspect provides a method for suppressing dust emissions during a mining operation. This method includes applying a surfactant composition to a location where explosive charges will be placed and allowing the composition to filter into the location. In general, holes will be drilled into a blast site for placement of the explosive charges and the surfactant composition is poured into and around the holes to moisten the area prior to detonation of the charges.
 Another aspect provides a method of suppressing dust emission during a mining process subsequent to blasting a location. A surfactant composition is applied to blasted material and allowed to filter into and moisten the blasted material.
 A further aspect provides a method of suppressing dust emission during mining operations that includes applying a surfactant composition to blasted material while the material is being transported. The may be accomplished by providing a shovel with a spraying means to spray the surfactant composition over the material as it is...