ask:
Friends want to do their own measurement of graphite product index, mainly need to measure fixed carbon, ash content and volatiles. Now just bought ceramic fiber muffle furnace , but the specific operation process and the origin of the data is not very clear , urgently to be resolved. So which friend knows the hope of this technology can guide, the more detailed the better. Thank you!
answer:
Ash content: A sample was weighed 1.0000g square crucible placed in a muffle furnace (to be placed without the temperature rose to 800 ℃ other again when timing) baked at 800 deg.] C for 1 hour and placed in a desiccator removed Medium cooling, weighing, calculation: ash % = (weight after baking - weight of å©åŸš) ÷ 1.0000g × 100% volatile: Weigh 1.0000g of sample in a lid with a lid, raise the temperature of the muffle furnace to At 900 ° C, put it in, accurately bake for 7 min, take it out and put it in a desiccator to cool, weigh it, calculate: volatile matter % = (1.0000g + å©åŸš weight - weight after baking) ÷ 1.0000g × 100% water : Weigh 1.0000g sample in a covered crucible, bake in an oven (temperature 120-150 ° C) for 1.5 hours, take it out and put it in a desiccator to cool, weigh, calculate: internal water % = (1.0000g + å©åŸš weight - Weight after baking) ÷1.0000g×100% fixed carbon% = 100% - ash - volatiles - internal water The above information is for reference only, I hope to help you.
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