酸化マグネシウムとカルシウムアナミドとの反応

概要

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To make reference to the reducing power of calcium cyanamide under reduced pressure, the reduction of magnesium oxide by calcium cyanamide has been investigated.　The summary obtained as follows :　(1) The temperature has an important effect upon this reaction. The main reaction between 1100 and 1200℃ takes place by the following equation.　CaCN_2 + MgO -> Mg + CaO + C + N_2　At 1200 ～ 1250℃ the following reaction must be postulated theoritically,　2CaCN_2 + MgO -> Mg + CaO + CaC_2 + 2N_2　But according to our experiments, the pyrolysis of calcium cyanamide predominates above reaction.　(2) The yield of magnesium per unit charge shows a maximum at CaCN_2/MgO = 1.25 ～ 1.5 (mol ratio) below 1250℃.　(3) The addition of calcium fluoride about l0% (weight) increases the yield of magnesium　(4) Calcium cyanamide as a reducing reagent gives a higher yield of magnesium than calcium carbide.
山形大学の論文
1966-01-14