To obtain the nickel equivalent of the nodule ore, the recovered tonnages of nickel, cobalt, copper (for a three-metal recovery process) and manganese (for a four-metal recovery process) are multiplied by the price ratio of the recovered metal and nickel to obtain the nickel equivalents.
为获取结核矿的镍当量，用镍、钴、铜（三金属采集过程）和锰（四金属采集过程）的采集量吨位乘以采集的金属与镍之价格比，即得出镍当量。