Coal quality analyzer, coal quality testing instruments use common sense

Coal test equipment experimental procedure→Coal quality test equipment test method Experimental procedure Sampling

Use a crusher to crush below 6 mm? → Take 10-12 g to make the water

Divide with a dichotomizer (or manually reduce)

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Drying coal samples with a blast oven

Made of coal sample less than 0.2 mm with a sealed sample preparation machine

Take 0.9~1.1g accurate to 0.0001g for ash (high temperature furnace project 2 fast ash)

Take 0.9~1.1g accurate to 0.0001g to do analysis of water (with blast drying box)

Take 0.9~1.1g accurate to 0.0001g as heat (heat meter)

Take 0.9~1.1g accurate to 0.0001g as volatile (use high-temperature furnace item 6 as volatile)

Take 50 mg to do full sulfur test method 1. All water (Mt)

Weigh 10 to 12 grams of coal sample of 6mm or less to 0.001g and put it into a blast drying oven that has been warmed up to 105 to 110 degrees beforehand. Anthracite is dried for 3 hours. After bituminous coal is dried for 2 hours, it is taken out and cooled in the air. After about 5 minutes, the desiccator was placed in a desiccator for 15 minutes and weighed (without the desiccator, the sample was cooled to room temperature).

Total water = (reduced part mass / sample weight) * 100

2. Analysis of water (Mad)

Weigh 1 g of coal sample below 0.2 mm to 0.0001 g accurately and put it into a blast drying oven that has been warmed up to 105~110 degrees beforehand. Anthracite is dried for 1.5 hours. After bituminous coal is dried for 1 hour, it is taken out and cooled in air. After 15 minutes in the desiccator, weigh it (no dryer, cool the sample to room temperature).

Analytical water = (reduced part mass / sample weight) * 100

3. Ash (Aad)

Turn on the furnace power, press "Options" key to "item" display "2", then press "start" and "silence", "program" shows "1" key instrument automatically warms up to 850 degrees "program" shows "2 "After the alarm, use a gray plate to weigh 0.2mm below 1g of coal sample to 0.0001g. Open the door and place the sample on the furnace door. Slowly push the sample into the high temperature zone in the center of the furnace. (Note! Do not detonate the coal sample. The chimney valve should be opened.) Then close the furnace door and press the "Trigger" button. The instrument automatically ends at 815 degrees and the temperature is 40 minutes. After the alarm is taken out, it is cooled in the air for about 5 minutes and put in the desiccator for 15 minutes. , cool the sample to room temperature).

Ash=(weight of residue in the petri dish/sample weight)*100

4. Vad

Turn on the oven power, press the "Options" key to display "Item" as "6", then press "Start" and "Silent", "Program" shows "1" key The instrument automatically warms up to 920 degrees "Program" shows "2 "After the alarm, use a volatile sample to weigh less than 0.2 mm. 1 g of coal sample is accurate to 0.0001 g. Open the door and place the sample on the furnace door. Place the sample in the high temperature zone in the hearth of the furnace. (Note! The chimney valve should be closed. The furnace temperature must be raised to 900 degrees within three minutes. Then close the furnace door and press the "trigger" button. The instrument will automatically warm to 900 degrees for 7 minutes. 6 minutes 30 seconds Alarm 7 minutes After the removal, after the removal is complete, it is cooled in the air for about 5 minutes and then placed in a desiccator for 15 minutes and then weighed (without the dryer, the sample is cooled to room temperature).

Volatile = (part weight reduced after burning/sample weight) *100-Mad