Re: Layer Formation During Stacking
Dear Mr.Shanky,
Only by stacking you cannot get blending unless it is reclaimed by BARREL reclaimer.It is obvious that more the number, more the blending effiency.But machine will be costly. You have to compromise with no. of layers.For calculation & other knowledge please go through STACKING, BLENDING &RECLAIMING...By R. Wholbier.
Regards.
A.Banerjee ■
Re: Layer Formation During Stacking
Dear Mr. shanky,
Mr. Banerjee has already given information about the achieving blending in stock pile. Referring to your questions, I reply as below :
1) The first requirement to create blended material, is to form a stockpile. This stockpile formation can be chevron type, windrow type, cone shell type etc. Such formation will have number of layers of bulk material in the stockpile.
2) In order to get the blended material, the reclaimer being used should simultaneously reclaim material from all the layers. The reclaimer and its system, which cuts across all the layers at a time will have a maximum blending effect. The reclaimer which cuts across less number of layers at a time will have less effective blending. Blending effect is quantified by blending ratio in conjunction with batch size.
3) There are mathematical formula to calculate the possible blending effect. Refer to the book as mentioned by Mr. Banerjee. These formulas are very lengthy and involve lot of statistical considerations. The best blending effect can be achieved by machine like bridge type scraper reclaimer, barrel reclaimer, bucket wheel on bridge etc.
The achieving of higher blending efficiency demands more attention, more perfection and very systematic management of the stockpile, right from inflow of material to the outflow of material. So one opts for blending where it is needed and also the economic benefit verses extra cost in operation.
Regards,
Ishwar G Mulani.
Author of Book : Engineering Science and Application Design for Belt Conveyors.
Advisor / Consultant for Bulk Material Handling System & Issues.
Email : parimul@pn2.vsnl.net.in
Tel.: 0091 (0)20 25882916 ■
Layer formation during stacking
Dear Readers,
Normally when limestone stacking is taking place, invariably there is a mixture of quality of limestone that is stacked. Depending on the Travel speed of the stacker we decide on the number of layers that are likely to be formed.
Is there a formula to calculate the no of layers, Further with regard to blending we come across the ratio 10:1. Is this theoretically provable if so how?
I am a novice in the field of matl handling. Pls educate. ■