Fisher Industries recognizes the value of conservation and preservation. That is way we have implemented a number of "green" strategies in order to aid in sustaining our environment. Below are a few examples:
Water and fuel conservation are both important factors when it comes to environmental and economic stewardship. The use of the Fisher Air Separator supports the conservancy of both these valuable resources. Its ability to "dry" process materials can eliminate the need for a traditional wash plant and significantly reduce the amount of sludge generated. Asphalt producers are able to reduce fuel costs, as the material is already dry upon entering an asphalt drum, meaning less time and energy is needed to manufacture asphalt.
Another benefit quarries are seeing when using a Fisher Air Separator, is the production of a second saleable product. Dry fines from limestone, granite, and sand & gravel applications have been sold as aglime, mineral fillers for fertilizer, concrete filler, composite shingles, and pipe bedding. What was once washed away and rendered into non-saleable sludge is now being turned into valuable and useful products.
Use of the Fisher Air Separator has become award-winning. Recently, Southern Quarries of Adelaide, South Australia has been awarded the Cement, Concrete, & Aggregates Australia (CCAA) Health & Safety Extractive – Environmental Innovation Award. This award is presented to the quarry operation achieving the best overall environmental innovation performance, considering its location, size, and age. Southern Quarries was chosen for this award for its "environmentally sustainable" way to produce quality manufactured sand considering such determining factors as air quality, and water & waste management.
Fisher Industries is the leading supplier of rubberized asphalt in the Phoenix metropolitan market. More durable and skid-resistant than conventional asphalt, rubberized asphalt uses "crumb rubber" – ground used tires that would otherwise be discarded or take up space in landfills. In addition to being an ideal means of recycling tires, rubberized asphalt has the benefit of being smoother and quieter, thus reducing noise pollution as well.
Approximately 1,500 tires are used for every lane-mile of rubberized paving. Using old discarded tires in our roads promotes a sustainable highway system. Roads topped with rubberized asphalt maintain their durability and long-term performance. In some instances, these surfaces can be virtually maintenance free for up to 18 years. Learn more about rubberized asphalt at the Arizona DOT website.
Warm Mix Asphalt (WMA) is a pavement technology that is gaining popularity in the paving industry. WMA allows for significantly lower mixing and placement temperatures than that of a conventional Hot Mix Asphalt (HMA). With the asphalt mixture being mixed at lower temperatures, fuel and energy consumption is significantly reduced resulting in fewer greenhouse gas emissions during production.
Another benefit of WMA is that the amount of recycled asphalt paving (RAP) in the asphalt mixture can be increased. The more RAP that is utilized, the less liquid asphalt is needed. Liquid asphalt is by far the most expensive component of asphalt mixtures. The ability to increase the amount of RAP used results in a decrease in production costs.