Coal beneficiation

Coal is treated in processes called “beneficiation” to prepare a material that meets the certain requirements. These processes may result in low ash quantity and low sulphur content. They include the following: Sizing, controlled by a crushing and screening process ..

Environmental Impacts of Coal Burning

Coal burning generates millions of tonnes of wastes including fly ash, bottom ash, oxides of carbon, nitrogen and sulphur, Volatile Organic Compounds, mercury, uranium, thorium, arsenic, and other heavy metals. High sulphur coal can cause Acid Rain which may result in soil deterioration and ..

Fly Ash

When coal is burnt (e.g. in coal fed power plants), two types of ash is produced. One that falls in the bottom of the boiler is called bottom ash. Another is made of fine particles that are driven out along ..

Coal Tar

Coal Tar is the by-product of making coke or coal gas. It’s  a complex , highly viscous mixture of some 200 compounds including phenols, polycyclic aromatic hydrocarbons (PAHs), and heterocyclic compounds. Coal tar is generally used in: Inflammable material to ..

Coke

Coke is nearly pure carbon that is produced after diving off the volatile constituents of the coal. Natural Coke is formed when the coal seam is intersected by a volcanic intrusion, which heats it in absence of air. Artificial coke ..

Difference Between Peat, Lignite, Bituminous and Anthracite

Coal is primarily made of Carbon, Hydrogen, Oxygen, Nitrogen, Sulphur and varying quantities of aluminium, zirconium and many other minerals. In terms of increasing carbon content, hardness, heat content and decreasing moisture coal is of three types viz. Lignite, Bituminous ..

Government Policy in Cement Sector in India

Six industries viz. Aluminum, cement, fertilizer, iron and steel, glass, and paper are energy-intensive industries. Together they consumer 40% fuel in the manufacturing sector. All of them have a common problem of drastic power cuts, mainly due to shortage of ..

Environmental Concerns of Cement

The cement making process involves a lot of pollution and has been under the criticism for environment concerns. Under the Prevention and Control of Pollution (Uniform Consent Procedure) Rules, 1999, Cement has been classified as a RED industry, signifying heavy ..