Metal deposits in the crust and seawater are abundant. As long as the technology of mining and beneficiation is improved and the performance of mining and beneficiation machinery is improved, the grade of ore that can be used economically can be reduced, and the metal waste can be fully recovered. Under the condition of sufficient energy supply, the resources of metal materials are not scarce. After coal, oil and natural gas are no longer widely used as fuels but mainly as raw materials for synthetic materials, the supply of non-metallic materials can also be guaranteed in the long run.
Metal deposits in the crust and seawater are abundant. As long as the technology of mining and beneficiation is improved and the performance of mining and beneficiation machinery is improved, the grade of ore that can be used economically can be reduced, and the metal waste can be fully recovered. Under the condition of sufficient energy supply, the resources of metal materials are not scarce. After coal, oil and natural gas are no longer widely used as fuels but mainly as raw materials for synthetic materials, the supply of non-metallic materials can also be guaranteed in the long run.
