Coal relative density test - Database & Sql Blog Articles

The ratio of the mass of coal (excluding the pores of coal) to the mass of the same volume of water at a certain temperature (20 ° C). Generally measured by the density bottle method. The density of coal is generally the relative density including minerals. The relative density is related to the composition and content of minerals. The density increases with the increase of mineral content, and increases with the increase of metamorphism: Generally, the relative density of lignite is less than 1.3, that of bituminous coal is 1.3 to 1.4, and that of anthracite is 1.4 to 1.9. Pomade peat is usually lighter than humic coal and has a specific gravity of about 1.1. In humic coal, the density of different coal and rock components is also different. When the degree of metamorphism is the same, the density of silk coal is larger than that of mirror coal. True relative density is one of the important indicators for studying the properties of coal and calculating the average quality of coal seams.
The new generation 3H-2000TD series automatic true density analyzer launched by Bestech can accurately measure the true density of various materials. It has many technical patents and original test methods, making its application field wider than similar instruments. The result is more accurate and the analytical material has a wider volume range. The instrument is widely used in many research institutes and enterprises including China Aerospace Science and Technology Fourth Hospital, Shenyang Coal Science Institute, Huahai Group, Dow Chemical, etc., and has been well received by customers.