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BACKGROUND OF THE INVENTION. I. Field of the Invention . The present invention relates to a process for treatment of anthracite coal. More particularly it relates to magnetic separation of previously processed anthracite coal from klinker type ash or cinders, which is an industrial waste product of pre 1960, anthracite treatment centers or coal breakers.
The coal is baked in an airless kiln, a quot;coke furnacequot; or quot;coking ovenquot;, at temperatures as high as 2,000 #176;C (3,600 #176;F) but usually around 1,0001,100 #176;C (1,8002,000 #176;F). This process vaporises or decomposes organic substances in the coal, driving off volatile products, including water, in the form of coalgas and coaltar.
Coal is a combustible sedimentary rock formed from ancient vegetation which has been consolidated between other rock strata and transformed by the combined effects of microbial action, pressure and heat over a considerable time period. This process is commonly called coalification.
#0183;#32;The final stage of coal production is the anthracite stage. During this stage, soft coal becomes hard coal. It takes on a certain luster and is formed due to intense pressure and high temperatures. Anthracite produces little smoke and is the coal most people are familiar with.
#0183;#32;Bituminous coal is used as an energy source in many parts of the world. The final stage of coal production is the anthracite stage. During this stage, soft coal becomes hard coal. It takes on a certain luster and is formed due to intense pressure and high temperatures. Anthracite produces little smoke and is the coal most people are familiar with.
Anthracite coal is a porous material containing, among other things, trapped gasses (principally methane) and water. When the particles are heated, these gases expand and stress the particles that can crack as these volatiles try to escape.
Anthracite is often referred to as quot;hard coalquot;; however this is a layman''s term and has little to do with the hardness of the rock. Coal forms from the accumulation of plant debris, usually in a swamp environment. When a plant dies and falls into the swamp, the standing water of the swamp protects it from decay.
To manufacture smokeless coal, firstly, the naturally occurring anthracite is ground down into powder before being reformed into briquettes of even form by combining the powder with a smokeless binding agent such as starch or molasses.
For instance, in Antarctica, large igneous sills intruded the coal measures and converted some of the existing bituminous coal to anthracite. Temperatures ranging from 170 to 250 #176;C (about 340 to 480 #176;F) are thought to be necessary for the formation of anthracite.
From the beginning as peat to the end of process which produces anthracite coal, coalificationis the result of many different factors that culminate for create the fossil fuel known as coal. The initial plant material, peat, will be subjected to pressure, heat, and decay which will
First lignite becomes subbituminous coal, then bituminous coal, and finally the highest quality anthracite coal. As these transformations occur, the amount of water and other compounds in the coal decreases and the coal becomes more dense. Along with this comes a higher carbon concentration.
Bituminous coal is used to generate electricity and is an important fuel and raw material for making coking coal or use in the iron and steel industry. Bituminous coal was produced in at least 19 states in 2019, but five states accounted for about 75% of total bituminous production: West ia (%), Pennsylvania (%), Illinois (%), Kentucky (%), and Indiana (%).
#0183;#32;Anthracite coal, mined from the planet''s oldest geological formations, has spent the longest time underground. The coal has been subjected to the most pressure and heat, making it the most compressed and hardest coal available. Hard coal contains greater potential to produce heat energy than softer, geologically quot;newerquot; coal.
Anthracite coal contains more carbon than bituminous coal and less sulfur making it more desirable Bituminous coal can be converted to anthracite with time. Normally swamp water does not have a higher oxygen concentration; therefore, microorganism density
Anthracite Wikipedia
It is a highhardness mineral coal of great carbon content. It is formed, like all mineral coals, by a slow process (millions of years) of plant transformation by effect of pressure and temperature. It is the last one on the scale of the Cobonus, and the one that more temperature and pressure needs to form.
Carbonization (coke making) Coke is the solid carbonaceous residue that remains after certain types of coal are heated to a high temperature out of contact with air. The process of heating coal in this manner is referred to as carbonization or coke making.
The process that creates coal varies slightly in different areas depending on the plants and conditions that are present, but the overall process is similar. There are two main phases in coal formation: peatificationand coalification. Bacterial activity is the main process that creates the
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