Method for accurately measuring evaporated mass in coal

Abstract

The invention discloses a method capable of accurately measuring the volatile mass in coal. A crucible for volatile matter and a crucible frame are selected; a pyrometer and a temperature regulating device are selected; a crucible frame clamp and an analytical balance are selected; Type or lever type cake press machine; use a stopwatch and dryer; use a porcelain crucible with a cover that has been burned at a temperature of 900 °C to a constant quality, weigh the air-dried coal sample, and then gently shake the crucible to flatten the coal sample , placed on the crucible rack, lignite and long-flame coal should be pre-pressed cakes, and cut into small pieces of about 3mm, pre-heat the muffle furnace to about 920 ° C, open the furnace door, and quickly put the crucible on the shelf Send it into the constant temperature zone and close the furnace door, heat accurately for 7 minutes, take out the crucible from the furnace, cool it in the air for about 5 minutes, move it into a desiccator to cool to room temperature, weigh it; calculate the result. The method can greatly improve the detection accuracy, and improve the detection efficiency, so that the detected coal can meet the expected requirements when used.

Description

technical field [0001] The invention relates to a method, in particular to a method capable of accurately measuring the volatile mass in coal. Background technique [0002] Coal is a solid combustible mineral that was gradually formed by ancient plants buried underground through complex biochemical and physicochemical changes. It is a kind of solid combustible organic rock, which is mainly formed by biochemical action of plant remains, and then transformed by geological action after burial, commonly known as coal. Coal is known as black gold and the food of industry. It has been one of the main energy sources used by the human world since the eighteenth century. Coal is a layer of extremely thick black humus accumulated on the ground from the branches, leaves and rhizomes of plants for millions of years. Due to the changes in the earth's crust, it is continuously buried in the ground, isolated from the air for a long time, and under high temperature and pressure. After a s...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the low efficiency and large error of the above-mentioned existing detection method, which leads to the problem that the coal cannot meet the expected requirements in the subsequent use, and designs a method that can accurately measure the volatile mass in the coal. The method can The accuracy of detection is greatly improved, and the detection efficiency is improved, so that the coal after detection can meet the expected requirements when used, and the problem that the existing detection methods are low in efficiency and large in error causes the coal to fail to meet the expected requirements in subsequent use

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