Design Of Transfer Point (Continued)
Design Of Transfer Point (Continued)
Design Of Transfer Point (Continued)
Design Of Transfer Point (Continued)
Design Of Transfer Point (Continued)
Design Of Transfer Point (Continued)
Design Of Transfer Point (Continued)
Design Of Transfer Point (Continued)
Design Of Transfer Point (Continued)
Design Of Transfer Point (Continued)
Design Of Transfer Point (Continued)
Design Of Transfer Point (Continued)
Transfer Point
From the photos, it appears that the impact rolls are incorrectly setup and the design for hard product impacting onto a belt conveyor would have harsh consequences for the covers & carcass of the belt. I had the same issue in the Philippines and I solved the issue with minimal cost by using a finger discharge 'Punch Plate Feeder'. The unit always carried a small amount on top of the plate (reducing impact) and the finger discharge regulated the fines onto the belt forming a bed before the larger & sharper flintstone and granite ores had a chance to contact the top covers. Because the simple feeder was only 200mm above the belt edge, the fall onto the belt reduced impact totally to almost zero. This had the effect of belt replacement with a lower grade of strength of durometer of cover material and belt top cover wear disappeared. Wear and tear of the belt reduction was from 4.5 - 5,000,000 tonnes back to 100,000,000 tonnes as would be expected from the multiply and steelcord conveyor belts. Impact rolls and impact stations were totally eliminated for the transfers.
The cost of the punch plate feeders that were site built from the scrap yard of the mine was 5 men for three days per unit along with associated oxy/acetalene and welding machines. The feeder was hung on 16 doubled up pieces of conveyor belt strapping as insulators. The motion travel up to 600mm and feeding at 2,000 t/hr copper slurry ore with 5% approximately maximum lump (>600mm - 1000mm) onto a 1050mm belt width conveyors.
The feeders of my design would fit in place of the impact station channel iron frames as shown in the photo.
I am a single person and have retired due to health reasons but if you you are interested in the idea, please send me some detailed measurements and I would draft the changes of my feeder design to suit your application. ■
Re: Design Of Transfer Point
It is pleasing to see a request for help accompanied by sketches, photographs and an acceptance that help in correcting the problem may need be paid for. ■
Re: Design Of Transfer Point
Tecmate's feeder sounds about right for the belt preservation.
Your crawler mounted monster is a bit of fiscal overkill.
Why have crawlers & then bury the machine with the end wall of the approach ramp? Semi-mobile:: my a..e! Were the drawings ever approved?
Why drop material down to the tail end of the first feeder & then haul it up a slope to drop it down onto a screen? Throw out the first feeder & drop the material onto an elliptical bar feeder (Wobbler) set up as a grizzly. That will take the emphasis off the vibrating screen.
What you do with the crawlers is another matter.
Nice thread though! ■
John Gateley johngateley@hotmail.com www.the-credible-bulk.com
Material Handling Designer
Dear Sir
attached please kindly find my CV. I can solved the problem and I can come to your plant. If you are interested please inform me.
Regards
Pourvash
href="mailto:p.pourvash@namvaran.com">p.pourvash@namvaran.com
href="mailto:p.pourvash@gmail.com">p.pourvash@gmail.com
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Design Of Transfer Point
A simple vibrating grizzly feeder would eliminate the fines before they reach the belt. At the same time add consistency
to the feed, something apron feeders cannot do, thereby reducing if not eliminating also the impact point totaly.
A technician is always available to visit and help you define the simplest and most cost effective solution.
Regards. ■
Re: Design Of Transfer Point
Moustapha
Please send pictures/drawings of the transfer point from the vibrating Grizzly oversize to conveyor belt. Are there any problems with first apron feeder being very steep?-mud flowing backwards or big lumps sliding backwards? What is the wear on your apron feeder? What is the wear on your belt currently? - you will have to change the belt to have better resitance to impact and cuts - class"M"?.
Why you have 2 apron feeders in the design, when 1 would be sufficient? Please have a look at my webpage for references/capability statement.
Cost of the rework would be determined after visit to mine site - myself or one of the engineers, cost of the visit will depend on how much of the information we could receive prior and maybe the need for the visit could be eliminated. The hopper will be down for several days - depending on the scope of work. I could offer several options/solution but it will have to be discussed to determine the one that would suit you best taking into account urgency, cost and the downtime.
Regards
Ziggy Gregory
[www.vibfem.com.au ■
Re: Design Of Transfer Point
We belive that Fairport Engineering Ltd could be of assistance in solving your transfer chute proble. I would refer you to our web site www.fairport.co.uk and if you would like to make contact we will quote rates for site visit etc. ■
Design of Transfer Point
Design of Transfer Point
Would you give us by return the best price and delay for these operations:
• Coming in our mine to visit our plant
• Re-designing a transfer point
• Evaluating the technological grade of wear of a conveyor belt
You have got to give a guaranty of lifetime of the belt with the new design of the transfer point.
You will send us your technical backgrounds.
ICS (Industries Chimiques du SENEGAL) have a phosphate mine in Thies (SENEGAL).
The raw ore contains edged lumps of flintstone. In the first step of treatment the 150 tons-trucks dump the raw ore into a hopper. Under this hopper, an apron feeder moves the ore into a vibrating screen. The cut size of the vibrating screen is 400mm.
The ore which contains moisture (up to 30%) and mud is very sticky. Particles less than 400 mm fall down on a second metallic apron feeder whose speed is variable. From time to time flintstone which is very hard break into sharp-edges pieces on the second apron feader. This second apron feeder discharges into the conveyor belt. All the equipments except the conveyor belt are on two crawlers (semi-mobile).
Height of discharge: 3m
Belt speed: up to 4,2m/s
Belt width: 1200mm
Belt characteristics: ST 2250 X 10 + 5
Length of conveyor: 6,5 km
At the loading point the belt is supported by three non rigid idlers fitted with impacts rings.
Please study the following photos and send us your questions, if any.
Moustapha FALL
Chef Dpartement Maintenance p.i
Direction du Site Minier
Tel.(221)939 50 30
Fax.(221)955 61 60
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tp-1 (JPG)
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