Method for producing magnesium oxide and co-producing methanol through hydrogenation refining of magnesium carbonate

The invention provides a method for producing magnesium oxide and co-producing methanol by hydrogenation reduction refining of magnesium carbonate. The method comprises the following steps: (1) carrying out reduction refining on magnesium carbonate under the conditions of green hydrogen atmosphere and different roasting temperatures to produce magnesium oxide; and (2) converting carbon resources in carbonate into methane and carbon monoxide through reduction refining, and producing high value-added chemicals such as methanol and the like with excessive hydrogen under mild conditions. According to the method, emission reduction of carbon dioxide in the magnesium carbonate pyrolysis process can be realized, the decomposition temperature of magnesium carbonate is reduced, production energy consumption is reduced, novel'green 'magnesium oxide with a low carbon background is obtained, carbon resources in magnesium carbonate can be converted into high-added-value chemicals such as methanol, and the method has a wid