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separation anxiety: setting up efficient conveying and magnetic separation lines for c&d takes careful planning but minimal maintenance.

by:Maghard      2020-02-28
From Chaos
After studying a viable local Terminal Market, The recycler and its equipment provider must determine the most effective means to reach these products, designed to contain conveyor belts, dimensions-
Reduce equipment, size screens and magnets.
Magnets not only transfer valuable scrap metal from the flow of materials, but also help to create clean wood and aggregate products.
However, in order to reach the acceptable level of metal recovery and clean aggregate products, the way materials are presented to magnets is important, and the conveyor plays an indispensable role in this process.
While there doesn\'t seem to be anything worth considering with the conveyor, this pure diversity may start a head rotation of one person: the flat idler belt, apron, slot, vibrating feeder and slider bed are just a few.
Since they help to integrate the entire handling system, it makes sense to consider the advantages of each conveyor type.
How does the C & D recycler determine the system that provides them with the most effective separation of various materials?
They started at the end.
\"In determining the magnetic and separation requirements, customers must first understand the market in a specific geographic area,\" said Brian Sinram of Sherbrooke O . \". E. M. Ltd.
Sherbrooke of Quebec said.
\"Given his or her final product, the customer will determine the potential amount of recycling that he or she can achieve.
John O\'Neill, vice president of sales and marketing at McCloskey Brothers Manufacturing, based in Peterborough, Ontario, said that the line is usually for overs (Or large pieces)
It was screened out early in the process.
Then the home screen will be 10-or 12-inch-minus range.
The resulting material enters the manual picking station from the material.
The secondary screen can help remove the penalty section and leave relatively clean material for the sorter to pick, O\'Neal said.
The rest of the material will be delivered to the , which will transfer the black part of the airflow.
In some cases, copper, brass and scrap aluminum can also be recovered using vortex magnets, \"our differences in C & D systems are related to the breaking of the material, and these two lines are 10-
\"Inches are reduced and excessive,\" said Sinlan . \".
Sherbrooke used it to weld Z-
Pan Apron conveyor, which transports the material to the general screen of the moving finger.
Sinram said that this method helps to improve the sorting efficiency on the production line.
After the material is divided into two parts, Sinram said that when the under is transferred to the , optimal sorting and metal removal can be achieved by lifting the takeover to the sorting platform.
\"From there, unders are promoted to the second screening where multiple sizes can be automatically separated,\" he said . \".
Determining the size and type of the used for the C & D sorting line depends on many factors, such as the total handling capacity;
Belt width, angle, speed;
And the depth of burden.
The law of attraction is perhaps the most basic question that C & D recyclers have to consider when choosing magnets, is whether they want permanent magnets or electronic magnets.
Non-permanent
Magnets, may be a better option for C & D recyclers with portable or mobile settings, as they do not require power to operate.
However, for companies with fixed plants, electronic magnets may be a better option, as they usually offer stronger magnetism and more functionality than permanent magnets
Peterborough, Florida, says.
He said that the types of magnets that C & D recyclers can use include drum magnets, which are able to lift large pieces of black metal, head or tail pulleys from the flow of flowing materials, when other materials fall off, it can draw the material from the pile and keep it, super-band or cross-band magnets suspended above the conveyor line
\"In some applications, two magnets are installed for optimal sorting, which is called an automated system,\" Sinram said . \".
\"In general, drum magnets are used in waste yards.
Although it requires a slightly higher investment, it is well worth it because the drum is more efficient and maintenance-free.
Sinram added, \"At the moment, most of our customers are converting from existing overhead magnets to drum magnets, which leads to higher efficiency and faster return times.
After all, the C & D business tracks the scrap yard business on a large scale.
The rubber belt conveyor and vibrating feeder are most commonly used to show materials to magnets, Ciccotelli said.
\"They can hold various positions.
\"Normally, it can be a vibrating feeder, placed on a , with a proper height, or what we call it around 12,\" he said . \".
\"Or you can start the vibrating feeder at a low level around 6, which they call insufficient.
He said that the low temperature drum works better on medium size materials, while the high temperature drum works better on larger and longer materials.
Ciccotelli said: \"If we use rubber bands, they will be severely inadequate.
Ciccotelli said: \"Steinert makes stirring drum magnets, which means they have several poles opposite each other, which causes the material to flip and release the trapped dirt.
\"It gives you a cleaner scrap and a better recycling of black metal,\" he added . \".
However, Ciccotelli says that it is not advisable to stir the drum for heavy materials.
\"We tend to grab these items and bring them over so that the losses around them are reduced.
\"Harold bostade of Dings Magnetics, Milwaukee, Wis.
Said positioning the on the head pulley provides the best recovery.
\"The best way to show the material to the is to apply it online, and the hangs on the head pulley in the same direction as the material flows.
When the material falls off the end of the belt, it falls freely.
You have a lot of air gap and open material so that when the is suspended in the air and the metal is passed through the , it can easily reach the load, he said.
Because there is less material to prevent the from entering the burden, you can separate better, Bolstad said.
Bolstad says the cross-belt is at right angles to the direction of the flow before the head pulley.
He said it is more difficult for the to penetrate the depth of the burden in this position.
\"If the has to be outside 1 feet, then we need a stronger than 6 inch,\" Ciccotelli said . \".
\"Size is a function of distance.
Magnetic is a property that decreases with distance and heat.
\"In the case of a permanent , protecting the from excessive heat generated by friction, or from electricity in the case of a , is a key consideration.
Therefore, the motor manufacturer will conduct insulation or Anode Oxidation of its coils to protect the core of the .
\"Some manufacturing commercial liquids fill the shell gaps in order to help cool down,\" Ciccotelli said . \". \"We use an air-
\"In the case of cooling, because it is more friendly on site, because there are fewer leakage problems,\" he added . \".
Ciccotelli said that in terms of the depth of burden, most recyclers have a depth of burden of more than 12 inch.
Instead, he suggested that the depth in the range of 3 to 6 inch would be the best.
\"If it is 1 feet deep, a powerful will pick up the metal, but it will also capture a lot of dirt.
\"Some C & D recyclers also use vortex separators on production lines to separate non-ferrous metals such as copper, brass and aluminum.
Bolstad says these separators are usually located at the end of the processing system.
Ciccotelli said that the recovery of non-ferrous metals is often the most effective at a smaller particle size.
\"The Vortex separator will work at a fraction below 6 inch.
He added: \"The Vortex cannot effectively handle large pieces of brass or copper, such as pipe joints, because they are too heavy.
Sinram said that most C & D recyclers do not include vortex separators in their system configurations because the number of materials is not sufficient to justify additional investments in improving efficiency.
\"In addition, if we see that the depth of the load on the conveyor is usually about 10 inch, it may make the vortex separation inefficient,\" he added . \".
After deciding the right for their needs, the C & D recycler will be pleased to learn that keeping the running at its best performance has little maintenance.
Maintenance of Sinram for one\'s investment Sherbrooke recommends cleaning and checking the customer\'s conveyor lines and magnets every week.
He also advised them to respect the manufacturer\'s guidelines and to stock the necessary spare parts in order to avoid expensive or long downtime.
Bolstad recommends checking regularly for damaged or damaged parts of the so that the core is not damaged.
He also suggested setting a lubrication schedule for bearings.
\"If your electrical input is constant and the rectifier provides the appropriate input voltage to the , there is not much maintenance work to be done,\" he said of Ding\'s electromagnets.
\"Using an electronic , after so many hours of operation, you need to change the oil every two years or so,\" Bolstad added . \".
\"Because the permanent does not need cooling oil, you are just lubricating the bearing.
In addition to regular maintenance, C & D recyclers can also consider optional accessories such as anti-grinding covers, limit rings and armor bands by limiting scrap metal and preventing impact and wear, Ciccotelli said, help to improve the life of the .
\"We found that the wear cover and the limiting ring on the help to protect the from any core damage,\" he said . \".
\"This is very important because the core is the core of the drum and you don\'t want it to be infiltrated by magnetic materials that can be entered through worn-out materials --
Holes in the shell or shell.
Ciccotelli said that the magnetic dirt entering the through the holes on the housing could eventually cover the core and cancel the .
\"That\'s why most operators are losing magnets.
He added, \"The wear cover is a way to extend the life and prevent damage to the largest part of the investment.
It adds 10% to 15% of the cost of the , but simply by changing the worn-out part, the assets are almost always renewable.
\"The author is deputy editor-in-chief of construction and demolition recycling, can bee-
Post to dtoto @ gienet.
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