Trommel screens are designed to separate a wide variety of materials by size such as compost, soil, sands, gravel, light aggregate and sludge. If you regularly use a grinder for mulch chippings and want to maximize productivity and minimize machine wear, consider adding a Vermeer trommel screen to your fleet.
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Here are a few ways that adding a trommel screen can improve efficiency on a mulch operation when paired with a horizontal grinder or tub grinder.
Operators who aim to create a quality mulch product are often needing to double grind to create more consistent chip sizes. An alternative to double grinding is to utilize a trommel screen on your jobsite.
When wood waste is put through a grinder, it creates small, dusty particles called fines. For a tree care company, the less fines that are in the finished mulch product, the better. Ted Dirkx, Recycling and Forestry sales manager is familiar with this challenge of producing less fines, especially when it comes to colored mulch. He says, “in the mulch industry 80% of it gets colored, and fines soak up excess color additive.” Having a substantial number of fines requires additional dye to complete the coloring process, which can increase costs. If you are not coloring mulch, fines will still soak up other types of moisture. This can add unnecessary weight to the final product, making it more expensive to transport.
Double grinding creates additional fines in the finished product. Using a trommel screen alongside a grinder can create a high-quality product with few fines, by minimizing the amount of chips that need to go through the double grinding process.
For any piece of equipment, minimizing wear on key machine components is crucial. By using a trommel screen to sort the different sizes of particles, you will no longer need to double grind the entire pile. Instead, separate the grindings through the trommel screen with the select screen size, and only double grind the oversize material that need it. This helps extend the longevity on highly wearable pieces such as hammers, screens, cutter tips and wear plates.
Dirkx knows that using a trommel is an additional step in the grinding process, which can be a hurdle for customers. He says, “it adds an extra step, but it is also decreasing the amount of material in the second grind, reducing grinder usage, and creating a high-quality end product for the customer.”
Primary ground material can often have non-wood waste material such as dirt, rocks and sand, especially with land clearing projects. Those abrasive materials can add wear on the grinder, but don’t worry — they can be screened by a trommel. Creating cleaner waste for a regrind is not only good for the finished product, but for the machine itself.
It may sound contradicting that adding an extra machine can help minimize certain costs on your jobsite, but there is a clear reason: fuel consumption.
Adding a trommel screen can reduce the amount of material needing to be reground, meaning less time running the machine, and using less fuel to create a high-quality finished product. A trommel screen uses significantly less fuel to operate than a grinder. A grinder uses 20 to 40 gallons per hour, versus a trommel using two to three gallons per hour.
Adding a trommel screen to your tree waste jobsite can maximize productivity and create an efficient jobsite, in more ways than one. To get a beautiful and high-quality mulch product while minimizing grinder usage, consider adding a trommel screen to your fleet.
For more information on Vermeer trommel screens, contact your local dealer.
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Efficiency and productivity are vital in the world of waste reduction—especially in the wood waste recycling market. To optimize your horizontal grinder’s performance and your operation overall, incorporating supporting equipment from a trusted manufacturer is key.
Let’s delve into three significant benefits your grinder can reap from a supporting trommel screen.
#1: Increase End Product Consistency
Integrating a trommel screen into your horizontal grinding operation presents a significant advantage by reducing the need for double grinding. Double grinding occurs when irregularly sized material passes through the grinder multiple times. This results in inconsistent material sizes, something that can be problematic for operations trying to meet the demanding size specifications of their industry.
By incorporating a trommel screen, operators can bypass this issue and achieve more consistent, uniform final end product sizes. The trommel screen acts as a highly effective size separator, sorting out overs that may require a second pass from similarly sized material that is ready for the next stage of processing or bagging.
This saves your operation time and ensures only oversized material needs to pass through the grinder again. The result is a more streamlined and efficient workflow that minimizes double grinding.
Minimize Fines
Rotochopper’s trommel screens can help minimize the inclusion of fine materials in your end product. The screen’s rotating drum effectively separates the ground material based on size. The sorted fines can be discarded or sold as a secondary product for use in compost, wood flour, or wood pulp production.
Consistent Color
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Like Rotochopper’s patented horizontal grinder screen change system, changing the screen on your trommel is quick and easy. For operators looking to produce high-quality colored landscaping mulch or playground chips with the MT 175, the screen can be swapped with a solid drum and paired with our colorizer system. The drum angle can also be hydraulically adjusted to ensure consistent color throughout your end product.
Adding a trommel screen to your horizontal grinding operation ultimately improves the overall quality of your end product and enhances the efficiency of your wood waste recycling operation.
#2: Minimize Equipment Wear and Tear
The trommel screen reduces the amount of wood waste that requires a second grind, which, in turn, minimizes the strain on your horizontal grinder’s components, including teeth, screens, and bearings. As a result, operators can reduce maintenance costs and downtime associated with frequent wear part replacements.
Rotochopper MT trommel screens are also completely compatible with our supporting technology, RotoLink®, which can help reduce wear on your trommel screen itself. The RotoLink remote monitoring system allows operators to access real-time telematics—any time from anywhere. With access to information on wear part lifespan, maintenance needs, and machine health, you can count on increased uptime, improved reliability, and a longer operational life for your equipment.
#3: Reduce Operational Costs
Incorporating supporting equipment like a trommel screen into your grinding business improves operational efficiency and offers significant cost-saving benefits. One of the primary cost-saving factors is the reduction in processing time.
The trommel screen effectively separates the desire-sized end product early, allowing some material to bypass the grinder and proceed directly to the next stage. This streamlined material flow minimizes the need for multiple passes and translates into substantial time savings, enabling you to process more material in less time and increase overall productivity.
Eliminate Inefficiencies
As previously mentioned, Rotochopper’s trommel screens are compatible with RotoLink. Along with maintenance needs, RotoLink can monitor production rates, uptime, and machine performance, allowing operators to spot and easily correct inefficiencies in their workflow.
The hydraulically foldable conveyors on the MT series trommel screens can also help reduce unnecessary material handling, further minimizing your operation’s labor or equipment costs.
Lower Fuel Costs
Using a trommel screen can lead to lower fuel consumption. By reducing the amount of unnecessary grinding, you optimize fuel efficiency and minimize energy waste. This lowers operational costs and contributes to a more sustainable and environmentally friendly operation.
Fines Reduction
The trommel screen’s reduction of fines lowers the weight of your end product, making it more cost-effective to bag and transport. If your operation is producing colored mulch, the exclusion of fines additionally reduces the amount of colorant needed, further cutting costs.
Reduced double grinding and reduced production of fine materials also result in less wear and tear on the grinder’s components, leading to decreased maintenance and replacement costs over time. These savings can positively impact your bottom line while you maintain high-quality output.
Optimize Your Grinding Operation With Rotochopper
Incorporating supporting equipment, specifically a trommel screen, into your grinder setup brings undeniable benefits to your wood waste recycling operation. If you’re interested in exploring how our MT series trommel screens can benefit your wood waste horizontal grinding operation, contact Rotochopper today.
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