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Converting Weight in a Time

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    Converting Weight in a Time

    I am working on a spreadsheet for work that would help out alot. I operate kilns and these kilns use a preheater that strokes rock into them at a timed interval. Sometimes we need to throttle these kilns back a little. The feed strokes into the kiln on a seconds timer that we set. The rams push 425 pounds into the kiln everytime they stroke.

    So what I am trying to figure out, I want to input our target for tons per day that we want the kiln to produce. So for example I input 500 tons per day. I then need a formula to output in seconds how often the feed needs to stroke in the kiln. I have the math I just cannot manipulate excel to work with me on this.

    Example on the math: At 425 pounds per stroke and at 30 seconds a stroke the kiln gets 850 pounds of rock a minute, that's 51,000 pounds an hour, 1,224,000 pounds per day, divide that by 2000 and it shows 612 tons per day. Basically I need to figure out how to do this formula backwards to get the seconds from the tons not the tons from the seconds. I am sure I am just having a brain fart.

    Any input would be great thanks.

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    Re: Converting Weight in a Time

    Here you go, i think this should work.

    The formula is: =(Target Tons*lbs per ton(2000))/(Seconds per day/Seconds per Stroke)

    In my attached spreadsheet it's: =(E2*B4)/(B6/B3)

    Hope that helps.
    Attached Files Attached Files
    Last edited by LouisTh; 12-09-2019 at 05:29 PM.

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    Re: Converting Weight in a Time

    Sorry for off-topic interjection:

    Although there is no official rule regarding this behaviour, we request that wherever possible both the question AND the answer be provided in substantive detail here within the thread. An attached workbook is an excellent aid for posing a question and offering a solution, but solely doing that with no in thread explanation makes it difficult for researchers to understand or consider the Q & A of this thread without downloading what may be a pointless doc to them, if they can do that at all. Doing that also hides the content from search engines so others may never benefit from this.
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    Re: Converting Weight in a Time

    Apologies if i stepped out of bounds.
    Last edited by AliGW; 12-09-2019 at 05:19 PM. Reason: Please don’t quote unnecessarily.

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    Re: Converting Weight in a Time

    Thanks for adding the detail.
    Last edited by AliGW; 12-09-2019 at 05:30 PM.

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    Re: Converting Weight in a Time

    I think this is the math you are looking for

    500 ton * 2000 = 1,000,000 Lb / 425 per stroke = 2352,94 strokes
    and 1/2353 strokes is once every 36.72 seconds for 24 hr production
    the last stroke in this case is 0,94*425=400lbs to get to 500t exactly

    Edit: to clarify, a 24 hours = 1 day in excel equals numericvalue 1 that is why dividing 1 by the number of strokes gives the outcome of seconds interval

    see also attachment
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    Last edited by Roel Jongman; 12-09-2019 at 05:50 PM.

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    Re: Converting Weight in a Time

    Thank you both for the help, exactly what I needed.

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