Concrete plant owners and operators know the issues of dust collection. From the original startup permitting and paperwork related to the dust produced at concrete plants through the ongoing maintenance and replacement of dust filters and equipment years after you have experienced business, dust collection and suppression is an essential part of the system. The laws and rules regarding dust collection and suppression requirements vary town by town, county by county and even state by state. Additionally you may have various agencies that you might want to manage including local zoning authorities, DNR, EPA and others depending in your location. Fortunately the apparatus employed for collecting and suppressing dust related to concrete plants has continued to improve and is currently very effective.
Dust collection and suppression should be considered at a number of different areas of the concrete plant. Some owners will put equipment to gather and control dust in most area where it may be created. Others owners will simply put the collection equipment where it is completely required. Many owners use more dust collection equipment then required because they wish to be green, appease opponents, or for other reasons. Ultimately your decision on what sort of dust collection equipment you’ll need is dependant on that which you are trying to accomplish and what sort of concrete plant you have.
At the minimum concrete plants can be bought standard with a dust vent on the cement silos, usually a number of per compartment. When cement is delivered in a bulk tanker it is pneumatically blown from the tanker into the silo. A silo being filled by way of a bulk tanker minus the venting system standard of all silos looks as though the silo is on fire. Cement, fly-ash and slag (the most frequent materials in silos at concrete plants) are aerated commodities atomizzazione polveri. Which means when air is introduced into the material it becomes lighter and flows easier. When these materials are pumped into the silo’s from the tanker the dust collector keeps the materials from flowing into the surroundings looking like a thick smoke. In the event of silo dust collectors they really provide operators with a price savings as it keeps them from losing massive amount materials being delivered.
Another common place for dust collection equipment is where in fact the materials discharge into the mixer. Precast and product plants will commonly have a dust collection system integrated using their plant mixers. Ready mix plants frequently have a dust collection system that helps contain and control the dust around where in fact the truck connects with the plant. Other areas that are often designed with dust collectors include weighing hoppers such as a cement batcher. Some locations are even forced to control the dust from trucks on gravel drives and areas using water trucks to help keep the area moist and dust in order as trucks travel through.
Obviously understanding the areas on and around your concrete plant that are problem areas for dust creation as well us knowing what the environmental and zoning requirements related to dust are among the most crucial factors in selecting dust collectors and suppression equipment. Another important factor is developing the strategy for controlling the dust. Some plants work with a different dust collector for every single area they have to control. Central dust collectors may also be available that use ducting systems to gather dust from multiple areas and vent it to an individual centralized dust system. Some concrete plants use a variety of systems. There isn’t necessarily the right or wrong system, it is simply selecting the proper system for your application.