Dust piled material is divided into two categories: one is static dusting material yard surface; the other is in the process of stacker-reclaimer and other dynamic dusting. The former and the material surface moisture, wind speed and other closely related, the latter mainly with the job gap, associated with handling strength. When the power bulk yard, only external wind speed reaches a certain intensity, the wind makes the windrow surface of the particles migrate upward generated is sufficient to overcome the friction and other external forces hinder the particles migrate gravity particles themselves and between particles, particles left stacking surface and raised, this time the wind speed is called the starting wind speed. According to the experimental study of open-air windrow diffusion of dust, material piled relationship between the amount of dust and wind speed as follows: Q = a (V-V0) Where: Q ............... .. Stockyard dusting rate Winds V0 ............... V ............... .. dusting Winds a .................. and dust particle size distribution related coefficient n .................. index (n> 1.2);. From the formula can Q material piled seen the amount of dust and poor wind speed (v-v0) high power is proportional. Because, reduce feed yard actual wind speed is to reduce the amount of dusting the most effective way. Can also be seen from the above equation, the amount of dust piled material Q becomes small, the main approach is to reduce the "V-V0" difference. Set wind and dust mesh The goal is to V smaller, wet dust suppression purpose is to V0 becomes large, so as to achieve the purpose of reducing Q. So the open-air yard, the use of wind and dust mesh and humidifying dust suppression from the two main technical measures to reduce the quantity of dust. Harsh wind environment have an impact on people's life and production. By installing Wind Dust Network in place, can reduce the wind speed within a certain range, improve the wind environment, improve environmental quality, people's production and life to create a more favorable micro-climate. The kinds of flexible type a folding Wind Dust Network single network: the width of 2-5 meters factory, machine infinite width, length unlimited extension. Double Net: Factory 2-5 meters width, machine infinite width, length unlimited extension. Type two folding steel Wind Dust Network single peak (monomer) forming between 250mm-500mm width, peak height of 50mm-100mm, length within 6 meters can be processed. Bimodal fold forming between 400mm-600mm width, peak height of 50mm-100mm, length of 6 meters can be processed. Three peaks forming folding width of 810mm, 825mm, 860mm, 900mm, etc., peak height 50mm-80mm, length within 6 meters can be processed. Plate thickness 0.5mm-1.5mm. Wind Dust Network not be more than 6.15 m length of the longest (the longer the net long steel farther away, the worse the wind), peak height 7.5cm wind best, this is the wind tunnel test results of the National Academy of Sciences in conclusion. Due to the different parts of their geographic environment, different weather conditions, it should also be used to different specifications of wind and dust walls to achieve the effect of wind and dust effectively. Subject to design professionals, to ensure the wind and dust wall of the safety and environmental effects.