Page 46 - Hub-4 Magazine Issue 70

Quarrying
McLanahan offers Ultra range for your challenges in the construction demolition and recycling industry
McLanahan has been in business for over 185 years and has been at the forefront of providing processing solutions for a variety of industries, including mineral processing, aggregate processing, agricultural and many others. In recent years, McLanahan has developed a full range of modular wet processing equipment to help with the challenges faced in construction demolition and recycling waste. This includes our Ultra Range – UltraWASH, UltraSCRUB and UltraSAND along with our range of Hydrosizers and Flat Bottom Classifiers. McLanahan is also one of only a few companies that designs and supplies a full range of water treatment and silt processing equipment.
UltraSAND Modular Sand Plants
With the greater separation efficiency of Hydrocyclones/SeparatorsTM, UltraSAND Modular Sand Plants are proven to provide a higher product yield compared to stand-alone processing equipment. Producers can achieve a much lower moisture content from the Dewatering Screen, depending on the characteristics of the sand.
UltraSCRUB Modular Scrubbing Plants
Capable of removing water-soluble materials from the toughest of clays, McLanahan UltraSCRUB
Modular Scrubbing Systems provide a flexible washing option for aggregate feeds. Arriving on- site in containerized modules, producers will benefit from the shorter lead times, quick setup
and ease of transportation offered by the UltraSCRUB.
UltraFINES Modular Fines Recovery Plants
UltraFINES Modular Fines Recovery Plants are a combination of a Sump, Pump, Hydrocyclones and a Dewatering
Screen in a module that is specifically designed to recover fine solids from a
wash plant effluent stream. The plant recovers material that is
conveyable and stackable. This plant is suitable for multiple industries, including sand, iron ore, coal recovery, ash, industrial sands, frac sand and more. UltraFINES modular plants recover fine solids to produce a stand-alone product and reduce the amount of solids reporting to the settling pond or downstream equipment.
UltraDRY Modular Dewatering Screens
The UltraDRY Modular Dewatering Screen is quick to set up and can be easily added onto any new or existing equipment. The slow travel speeds of material through the Dewatering Screen allow for longer sand retention, which allow for longer sand retention to yield a consistently drip-free product that is stackable and conveyable.
McLanahan’s Dewatering Screens use the highest G-force on the market, which enables them to handle the largest loads. An optional pump add-on can provide ideal water placement for a cleaner product while limiting water usage.
EcoPRESS Modular Filter Press Plants
EcoPRESS Modular Filter Press Plants provide the ability to optimize tailings management with the recovery of clean, reusable process water. The EcoPRESS can address many typical issues associated with fine material processing, including full slurry ponds/tailings dams, high material handling equipment repair costs, limited expansion capabilities, environmental permit restrictions, high waste material handling costs and limited water availability.
EcoCYCLE Modular Elevated Thickener Plants
EcoCYCLE Modular Elevated Thickener Plants provide a compact and modular solution for water recycling and sludge handling. EcoCYCLE plants come complete with motor, Pump, floc dosing station, control panel and control cabin.
The biggest challenges that the construction demolition and recycling industry face today can vary from country to country depending on a variety of factors, including local legislation and incentives. In short, many businesses are typically driven by economic incentives; therefore, recycling needs to be more
cost effective than sending the material to a landfill.
Other issues associated with the construction demolition and recycling industry are a set of acceptable quality standards for recycled material and its potential uses, e.g., load-bearing concrete. This could be assisted in the upstream sorting process by ensuring a more homogeneous material, such as separating materials like brick and concrete where possible before being processed. An element of this would include design. Many buildings and structures being demolished today were designed and built decades ago when a recycling plan would have not been in the criteria. The subject of older buildings and structures leads on to another factor to be considered, which is contamination and classification of hazardous substances. Asbestos was commonly used in construction throughout most of the 20th century, and dealing with it still causes challenges to this day.
While a lot of the material processed within the construction demolition and recycling industry can now be repurposed, one of the main challenges that remains is what to do with the silt that is removed at the end of the process. This is often a true waste material, but many companies continue to search for other uses for this material.
| p46 |
www.hub-4.com Sept-Oct 21 - Issue 70