After a calorific value measurement, it was found that there was an unburned coal sample in the combustion vessel. What is the reason for this?Usage, technical parameters, types, structural diagrams, methods, principles, images, manufacturers, drawings, videos, market trends, usage, purpose, production, drawings, ingredients, specifications, structures, functions, operations, mines, mines, laboratories, testing laboratories

After a calorific value measurement, it was found that there was an unburned coal sample in the combustion vessel. What is the reason for this?

Possible reasons are:

(1) Insufficient oxygenation pressure or oxygen bomb leakage;

(2) The coal quality is too poor and the volatile content is too low;

(3) The oxygen filling speed is too fast or the position of the combustion vessel is not correct, causing the sample to splash out;

(4) The ignition wire is buried deeper into the coal powder;

(5) The moisture content of the sample is too high or the coal powder is too coarse.