In a mechanical coal-wash process a portion of the inorganic sulfur and ash material in the coal can be removed. A feed stream to the process consists of 73% coal, 11% ash, 11% sulfur and 5% water. The clean-coal side of the process consists of 88% coal,6% sulfur, 3% ash and 3% water. The refuse side consists of 32% sulfur with the remainder being ash coal and water. If 80metric tons/hour of clean coal is required, determine the feed rate necessary for the mined coaland composition of the refuse material.

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  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-

plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.