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coal tar pitch |
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solid black |
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pitch can be used as raw material for coking pitch coke making electrode boning agent in electrode and aluminum industry |
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a black solid at a certain temperature ,it will be solidified into a brittle solid with shell-like fracture. It will melt in a certain range of melting points ,but it has no definite melting point .Soft pitch has no thermal effect when solidified |
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ÀÌÁ¦Ç°¿¡ ´ëÇØ µî·ÏµÈ ÆǸž÷ü°¡ ¾ø½À´Ï´Ù. |
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