Match game: specifying the proper shredding procedure is critical for recyclers to tap into desired end markets.[ILLUSTRATION OMITTED]
What goes in and what comes out--those are critical and equal considerations when recyclers of C&D materials are in the market for shredding shred
1. A long irregular strip that is cut or torn off.
2. A small amount; a particle: not a shred of evidence.
Recyclers who handle C&D debris handle a wide variety of materials, and the shredding equipment that will best fit their needs can range widely.
With the exception of recyclers who are focused on aggregates, shingles shingles: see herpes zoster.
or herpes zoster
Acute viral skin and nerve infection. Groups of small blisters appear along certain nerve segments, most often on the back, sometimes after a dull ache at the site; pain becomes or drywall, the majority of remaining recyclers are either dedicated to recycling wood and green waste, or they handle a mixed stream of which wood makes up the greatest percentage.
Recyclers handling a clean, uncontaminated stream of wood or land-clearing debris will likely go with a high-speed horizontal or tub grinder Grinder
A slang term for a person who works in the investment industry and makes small amounts of money at a time on small investments, over and over again.
Notes: to accomplish their goals.
But wood to be shredded also comes in as part of mixed and contaminated contaminated,
v 1. made radioactive by the addition of small quantities of radioactive material.
2. made contaminated by adding infective or radiographic materials.
3. an infective surface or object. streams. And the end markets desired can call for very different results, meaning that both recyclers and the vendors who serve them may need to explore using a slow-speed primary shredder as part of their configuration.
THE IN TRAY
When asked what recyclers and their suppliers should be considering when in the market for a slow-speed or primary shredder, equipment vendors are quick to remark that defining and characterizing the feedstock feed·stock
Raw material required for an industrial process.
Noun 1. feedstock - the raw material that is required for some industrial process
raw material, staple - material suitable for manufacture or use or finishing is critical.
"What needs shredding--and why?" are the key questions a supplier should ask, says Terri Ward of SSI (1) See server-side include and single-system image.
(2) (Small-Scale Integration) Less than 100 transistors on a chip. See MSI, LSI, VLSI and ULSI.
1. (electronics) SSI - small scale integration.
2. Shredding Systems, Wilsonville, Ore. The company uses the "What needs shredding?" question in its marketing materials, and Ward says it is in fact where the conversation should start.
"The point is, the more we understand about the 'big picture,' the more likely we are to identify the right shredder for the joiner join·er
1. A carpenter, especially a cabinetmaker.
2. Informal A person given to joining groups, organizations, or causes. even if a shredder is an appropriate solution for the buyer," Ward remarks.
Morbark Inc., Winn, Mich., sells predominantly high-speed grinders and tree chippers, but this decade it has also introduced the Predator series of slow-speed, high-torque primary shredders. "The plus of the slow-speed units is that they can handle a larger amount of contamination," remarks Doug Weedmark, international sales representative for Morbark.
Establishing that potential customers are dealing with a mixed or contaminated incoming stream is what can steer a conversation toward primary shredders, says Weedmark. "That's the first thing we're going to ask, since it can help determine whether they need a high-speed or a slow-speed machine," he remarks.
Slow-speed shredders are also commonly referred to as primary shredders because they are often deployed as the first of several processing steps in a mixed C&D operation. That is a process that can often include primary shredding followed by sorting, screening and another shredding or grinding step.
Steve Stoker of Badger Shredding Products Inc., Sturgeon Bay Sturgeon Bay is an arm of the Bay of Green Bay extending southeastward approximately 10 miles into the Door Peninsula at the city of Sturgeon Bay, located approximately halfway up the Door Peninsula. The bay is connected to Lake Michigan by the Sturgeon Bay Ship Canal. , Wis., says the machines his company makes are designed to tackle tough streams such as heavily-reinforced concrete, railroad ties and thick tree stumps and trunks.
In terms of fitting into a mixed C&D scenario, the machines can definitely be considered primary units, says Stoker. "Our machine is not a finish machine, it is the primary machine that will pretty much take anything that is fed to it," he comments.
Weima America Inc., Fort Mill, S.C., makes single-shaft and four-shaft shredders that can handle bulky wood waste or mixed materials. The company's Vikki Van Dam van Dam (Dutch for "of the dam") may refer to:
Not just the condition of the incoming material but how much is expected each day is part of the picture, notes Todd Dunderdale of Komptech USA Inc., Erie, Colo. "It is also important to know the volume, since each type of shredder has a number of different model sizes for desired throughputs," he comments.
END OF DAYS
At the same time recyclers are receiving inbound shipments of scrap wood or mixed C&D materials, they are also trying to make a clean end product that they can ship to a buyer at the end of the day.
Determining what type or types of products will be created and marketed also fits into the shopping process, say equipment suppliers.
"The customer's goal is to size his material [for a given market]," notes Weedmark. "That's important to the customer."
In tandem Adv. 1. in tandem - one behind the other; "ride tandem on a bicycle built for two"; "riding horses down the path in tandem"
tandem with knowing the feedstock, "End products also drive shredder selection," says Ward. "For example, you wouldn't typically use a shredder configured for coarse, primary volume reduction before a sort line to generate a three-inch-minus fuel product," she notes. "Likewise, a wood grinder shouldn't be used for primary reduction of mixed C&D containing metal and concrete."
The size of wood to be marketed is critical, says Gert Semler of shredder manufacturer Hammel New York New York, state, United States
New York, Middle Atlantic state of the United States. It is bordered by Vermont, Massachusetts, Connecticut, and the Atlantic Ocean (E), New Jersey and Pennsylvania (S), Lakes Erie and Ontario and the Canadian province of LLC (Logical Link Control) See "LANs" under data link protocol.
LLC - Logical Link Control , Holtsville, N.Y. "If a small product, let's say less than 4 inches, is the goal, most people do not realize it is more cost-effective to use two steps rather than trying to do it in one step," says Semler.
The task of taking mixed materials of widely ranging sizes and hardness and converting them to saleable sale·a·ble
Variant of salable.
saleable or US salable
fit for selling or capable of being sold
saleability or US
products is what often leads to the need for recyclers to deploy both a primary shredder and a subsequent grinder.
"Whether a single shredder or multiple shredders are required for an operation depends [upon] materials mix, recycling system design and desired end products," says Ward. "More and more prospective buyers understand very well that one machine can rarely do everything."
Stoker says slow-speed, high-torque machines are commonly used in tandem with other units, and can be deployed at some demolition jobsites to reduce material before it is hauled offsite. "If you have a structure that has been demolished, you could pretty much feed the whole house to our machine," he remarks.
From there, the resulting product can be hauled more affordable either to a landfill or to a mixed C&D facility for further processing, he notes.
Many recyclers will deploy a shredder and a grinder together as part of one process at the same facility. "One instance may be if the customer requires an end product smaller than 1/2-inch," says Van Dam.
Ward states that combining to units is common, but sometimes a primary unit alone will suffice. "For a fully integrated C&D recycler, the reality is usually a combination of low-speed and high-speed equipment for maximum efficiency," she comments. "That said, we do have customers who use a single, low-speed shredder in combination with a screen and magnet to generate acceptable end products."
She summarizes, "Selecting the right shredder and positioning it properly takes good coordination between shredder manufacturers, prospective buyers, and complementary equipment suppliers."
Makers of slow-speed, high-torque shredders gravitate grav·i·tate
intr.v. grav·i·tat·ed, grav·i·tat·ing, grav·i·tates
1. To move in response to the force of gravity.
2. To move downward.
3. toward choosing tough-sounding names that convey just how solid their machines really are.
Among the candidates for the Tough Guy Award is Continental Biomass Industries (CBI CBI
cumulative book index
CBI Confederation of British Industry
CBI n abbr (= Confederation of British Industry) → C.E.O.E. ), Newton, N.H., which markets the Annihilator an·ni·hi·late
v. an·ni·hi·lat·ed, an·ni·hi·lat·ing, an·ni·hi·lates
a. To destroy completely: The naval force was annihilated during the attack. line of primary shredders.
The Annihilator, which was also initially marketed as "The Mother of All Shredders," is designed to handle more than 100 tons per hour of "the most contaminated, commingled waste streams you can throw at it," according to according to
1. As stated or indicated by; on the authority of: according to historians.
2. In keeping with: according to instructions.
3. the company.
CBI touts the model's "extreme throughput and outstanding durability processing C&D, bulky waste Bulky waste or bulky refuse is a technical term taken from waste management to describe waste types that are too large to be accepted by the regular waste collection. It is usually picked up regularly in many countries from the streets or pavements of the area. , and municipal solid waste “Municipal waste” redirects here. For other uses, see Municipal waste (disambiguation).
Municipal solid waste (MSW) is a waste type that includes predominantly household waste (domestic waste) with sometimes the addition of commercial wastes collected by a ."
Annihilator features include a 6-inch forged steel, 20,000 pound rotor and an 8-feet by 10-feet feed opening with extended sides to provide wide open loading of large volumes of material.
Those who are interested in seeing just what the Annihilator can do to material to earn its name can see clips on the company's Web site or request a DVD DVD: see digital versatile disc.
in full digital video disc or digital versatile disc
Type of optical disc. The DVD represents the second generation of compact-disc (CD) technology. through the CBI site at www.cbi-inc.com.
Stoking a Market
Vecoplan LLC, Archdale, N.C., has been selling several of its shredder units as part of Refuse Derived Fuel Systems. Recently, the company completed the installation of its 50th such system at a major cement manufacturer in the southern United States The Southern United States—commonly referred to as the American South, Dixie, or simply the South—constitutes a large distinctive region in the southeastern and south-central United States. . (See news item on page 24 of the Sept./Oct. 2007 issue of Construction & Demolition Recycling.)
A Vecoplan RG62U shredder is the heart of these specially-marketed systems. The shredder is used to reduce post-industrial plastic and wood scrap for use as a fuel.
With 50 RDF (Resource Description Framework) A recommendation from the W3C for creating meta-data structures that define data on the Web. RDF is designed to provide a method for classification of data on Web sites in order to improve searching and navigation (see Semantic Web). systems now installed in cement plants around the world, Vecoplan has become a leading vendor of this technology, according to the company.
The Refuse Derived Fuel Systems also include "complete conveying and material handling systems; screening and separation technologies; and ... fuel mixing, storage, and delivery systems," according to Vecoplan.
More information on Vecoplan's full line of industrial shredders and size reduction equipment can be obtained by contacting the company at info@VecoplanLLC.com.
The author is editor in chief of Construction & Demolition Recycling magazine and can be contacted at email@example.com.