Crushed rock equipment use of clean - 1 views

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  #1 betsy stone on 12 Aug 14

   

  The selection of coal for industrial purposes is dictated by the economy of operation, and there are many instances where coal having high ash or sulphur contents has to be decided upon because it will meet the demands of economic operation which must in any case conform to the requirement: maximum output with minimum cost.Sulphur may occur in coal in different forms and combinations.For example,crushed stone machine supplier it may occur as pyritic sulphur, in the form of veins in the coal; it may occur as sulphate sulphur, in the form of calcium sulphate and other combinations; and it may occur as organic sulphur, forming an integral part of the coal.
  
  Various processes are being practiced for cleaning the coal at the mine. The coal may be ground and the dust may be separated afterwards, whereby pyritic sulphur is to some extent removed from the coal. Various washing and dry cleaning processes are being employed for removing the sulphur contents. Such mechanical processes are to some extent successful in removing pyritic and sulphate sulphur as well as other impurities. In case of organic sulphur which forms an integral part of the coal, these processes are practically ineffective. The value of cleaning the coal is, furthermore,crushed rock equipment for sale doubtful since the cleaning process increases the price of the coal while the saving which might be effected by the use of clean coal is problematic. Raw coal containing sulphur, when fired, will produce flue gases containing sulphur dioxide and sulphur trioxide.
  
  There are several systems in vogue which attack the problem of smoke nuisance by treating the flue gases with the aim of removing these obnoxious substances from the flue gases in order to avoid annoyance and detriment when the gases are liberated into the atmosphere.One system employs centrifugal separators for removing the dust and ash particles, but does not attack the problem of removing the sulphur dioxide from the gases. This latter problem, however, is a more insidious one than the problem of ash removal, since it harbors greater potential dangers.Other systems use electrostatic devices for separating the ash contents from the flue gases.These, as the first mentioned system, leave the problem of removal of sulphur dioxide generally untouched.

   

  <div class="cArrow"> </div><div class="cContentInner">The selection of coal for industrial purposes is dictated by the economy of operation, and there are many instances where coal having high ash or sulphur contents has to be decided upon because it will meet the demands of economic operation which must in any case conform to the requirement: maximum output with minimum cost.Sulphur may occur in coal in different forms and combinations.For example,<a rel="nofollow" href="http://www.sellercrusher.com/solutions/crushed-stone-machine-supplier.html">crushed stone machine supplier </a>it may occur as pyritic sulphur, in the form of veins in the coal; it may occur as sulphate sulphur, in the form of calcium sulphate and other combinations; and it may occur as organic sulphur, forming an integral part of the coal. <br /> <br /> Various processes are being practiced for cleaning the coal at the mine. The coal may be ground and the dust may be separated afterwards, whereby pyritic sulphur is to some extent removed from the coal. Various washing and dry cleaning processes are being employed for removing the sulphur contents. Such mechanical processes are to some extent successful in removing pyritic and sulphate sulphur as well as other impurities. In case of organic sulphur which forms an integral part of the coal, these processes are practically ineffective. The value of cleaning the coal is, furthermore,<a rel="nofollow" href="http://www.sellercrusher.com/solutions/crushed-rock-equipment-for-sale.html">crushed rock equipment for sale</a> doubtful since the cleaning process increases the price of the coal while the saving which might be effected by the use of clean coal is problematic. Raw coal containing sulphur, when fired, will produce flue gases containing sulphur dioxide and sulphur trioxide. <br /> <br /> There are several systems in vogue which attack the problem of smoke nuisance by treating the flue gases with the aim of removing these obnoxious substances from the flue gases in order to avoid annoyance and detriment when the gases are liberated into the atmosphere.One system employs centrifugal separators for removing the dust and ash particles, but does not attack the problem of removing the sulphur dioxide from the gases. This latter problem, however, is a more insidious one than the problem of ash removal, since it harbors greater potential dangers.Other systems use electrostatic devices for separating the ash contents from the flue gases.These, as the first mentioned system, leave the problem of removal of sulphur dioxide generally untouched.</div>

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