Method for automatic thermogravimetric volatile analysis of coal and coke
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United States of America Patent
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Apr 23, 2019
Grant Date -
Oct 25, 2018
app pub date -
Apr 24, 2017
filing date -
Apr 24, 2017
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Abstract
An automatic method for thermogravimetric analysis of multiple samples of coal or coke for volatile matter in a thermogravimetric analyzer of the type including an auto-loading delivery system, a furnace, a movable platform within said furnace, an external balance and an internal balance for measuring the weights of sample holders, lids and samples before and after treatment in the furnace. Coal or coke samples are placed in the sample holders and weighed in the external balance and are auto-loaded into the furnace at 950° C. All sample holders are weighed sequentially on the internal balance at exactly 7 minutes from introduction time with space time 14-20 seconds in between them and the weight of the sample holder prior to being placed in the furnace is compared with the weight of the sample holder after it has been treated in the furnace to determine the amount of volatile material.
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