The Introduction of Coal Processing Properties

The adhesion of the technological properties of coal, including coal, heat, chemical activity and thermal stability.
(1) The adhesion of coal.
Coal caking coal particles heated to a temperature in the absence of air under the conditions of melting, bonded to the performance of the focus block. General Roca index, gelatinous layer index.
The Roca index is an indicator that reflects the bituminous caking. It is based on bituminous coal in the heating process, the size of the colloid bonded to other inert material capabilities for the identification of coal as the basis for the bond index level of the bond and to determine the coal grades.
Glial layer index refers to the coal particles heated to a temperature in the isolation of air conditions, organic matter, thermal decomposition, softening into the thickness of colloidal substances, usually its maximum thickness of the Y values.
Roca higher the index, the better the adhesion of the coal. Glial layer the higher the index, the better coking properties of coal.
The bonding properties of coal by the coal rank of the coal, coal and rock composition, degree of oxidation, ash and other various factors. Coal ranks the highest and lowest of the coal is generally no adhesion.
(2) The calorific value of coal.
The calorific value of coal is coal is an important indicator. It is the heat per unit mass of coal produced by incomplete combustion, MJ / kg. The heat was a regular variation with coal rank, generally the higher the coal rank, the higher the calorific value of coal.
(3) Coal chemical activity.
The chemical activity of the coal is coal under certain temperature and the ability to respond to water vapor, oxygen and other interactions, is an important indicator to evaluate the gasification of coal and power coal.
(4) The thermal stability of coal.
The thermal stability of the coal is coal in high temperature conditions to maintain the ability of the original block. It is also an important indicator to evaluate the gasification of coal and power coal.

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