Kiln Network: dust of everyday life and industrial production often come into contact with a substance, ventilation and dust from industrial research perspective, the dust is in a certain period of time to the solid particles suspended in the air. Are suspended in a gas medium, solid or liquid particles in space system often referred to as aerosols, wherein the gas medium is continuous dispersion of the solid or liquid particles are dispersed. While suspended in a gas medium in a variety of solid particles of different habits of address, for example: dust, dirt, dust, smoke,,,,, etc., but among them there is no strict scientific definition and clear boundaries, a unified opinion, in the absence of special circumstances described, this book suspended in the gas medium referred to as solid particles of dust. General industrial dust generation 1) of the solid material in the production process for mechanical crushing, grinding,,,,,, dust is generated. For example, various mines and construction sites, the use of rock drilling tools, rock crushing and grinding by impact after drilling into a tiny dust particles escaping from the borehole, filled the air; Another example is the ore placed on the species crusher crushed into granular materials of different specifications, in the crushing stage screening process also has a large number of tiny particles escape from the gap of the machine, are the source of environmental pollution. 2) metal smelting or heating the material, because of the physical and chemical processes sublimation or vapor in the air condenses and forms fine oxide or particles. Such as steel-making process, the oxygen furnace smelting produce large amounts of oxide dust; Another example is the melting of lead or lead smelting, there are lots of tiny lead vapor evaporated from the surface of molten lead in the air condenses into lead oxide oxidation particles, which is commonly referred to as lead fume. 3) or incomplete combustion of organic material is burned, the effluent contains a large number of tiny particles and smoke. Such as coal, oil and combustion of organic materials such as plant Ye, because of the lack of oxygen, or other causes of not fully burn the effluent with the flue gas, in addition to containing fine carbon particles, but also incomplete combustion mixed with free carbon black (ie soot), thereby forming a black smoke; mine blast, in addition to a large amount of mineral dust outside, accompanied by incomplete combustion of explosive fumes.Light Expanded Clay Aggregate (LECA) 4) in the powder material mixing, running, screening, packaging and discharging the production process, a large gap between the dust escaping from the device. Aluminum production process, for example, the transfer from the storage tank powdered alumina feed tank to the electrolytic cell, the electrolytic cell from the feed tank to add alumina and fluoride salts, the cell processing operation processes, have a lot of oxidation aluminum and fluoride dust to escape. The various kinds of dust having a particle size range varies with the generation conditions. For example, various high temperature smelting furnace and the combustion process, due to physical and chemical changes in the formation of particles (including soot and smoke), generally higher than the mechanical processing or powder material generated in the production process is much more fine dust . The former can be less than 1 micron (1 micron = 10-6 m), which is more than 1 micron or even hundreds of microns. The above article by Henan YuFeng Heavy Machinery finishing release, reproduced, please indicate the source!