Analysis of coal samples fed into the furnace
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Let’s all discuss how many times per day (24 hours) the moisture and fineness of the coal fed into the furnace should be tested Is it necessary to do so many tests? (Here, we conduct 2 tests per shift, which amounts to 6 tests per day.) ) For other indicators such as ash, volatile matter, sulfur content, fixed carbon, G value, Y value, etc., how many times per day (24 hours) should they be analyzed? (We conduct tests 1–2 times a day here.) And as for the sampling locations, where is sampling usually done? On the belt entering the coal tower, on the belts after the rammer and crusher? If it were up to me, we could just use a rammer – am I right?
If you have sufficient manpower, the more sampling attempts you make, the better. Additionally, it is not recommended to take samples from coal towers or ramming machines, as the coal in such towers experiences a phenomenon of segregation during settling; for example, when coal moves down from the tower, the larger particles tend to accumulate in certain areas. It is therefore better to take samples from the conveyor belt.
It is recommended to take samples from the belt instead
In our company, coal sampling for furnace loading is done at the belt conveyor head
Sampling is generally done from the belt, and it is sufficient to test each parameter once per shift
Samples are taken from the belt, with two measurements per shift.
It is appropriate to collect coal samples from the belt behind the crusher, at the fracture site. The G value and Y value can be measured once a day, while ash content, volatile matter, sulfur content, etc. can be measured once per shift.
It is taken from the belt; we obtain it after passing through the crusher. All parameters are tested once per shift, with additional tests conducted in special cases
Nuo Nuo asks: Are the coal consumption figures for each company accurate?
We take it from the belt behind the crusher, once per shift