The long-term supply of nickel to society was assessed with the WORLD7 model for the global nickel cycle, using new estimates of nickel reserves and resources, indicating that the best estimate of the ultimately recoverable resources for nickel is in the range of 650–720 million ton. This is significantly larger than earlier estimates. The extractable amounts were stratified by extraction cost and ore grade in the model, making them extractable only after price increases and cost reductions. The model simulated extraction, supply, ore grades, and market prices. The assessment predicts future scarcity and supply problems after 2100 for nickel. The model reconstructs observed extraction, supply and market prices for the period 1850–2020, and is used to simulate development for the period 2020–2200. The quality of nickel ore has decreased significantly from 1850 to 2020 and will continue to do so in the future according to the simulated predictions from the WORLD7 model. For nickel, extraction rates are suggested to reach their maximum value in 2050, and that most primary nickel resources will have been exhausted by 2130. After 2100, the supply per capita for nickel will decline towards exhaustion if business-as-usual is continuing. This will be manifested as reduced supply and increased prices. The peak year can be delayed by a maximum of 100 years if recycling rates are improved significantly and long before scarcity is visible.

利用对镍储量和资源的新估计，使用WORLD7模型对全球镍循环对社会的镍长期供应进行了评估，表明对镍最终可回收资源的最佳估计在650-720范围内。百万吨 这大大超过了先前的估计。模型中的可提取量通过提取成本和矿石品位进行分层，从而使其仅在价格上涨和成本降低后才可提取。该模型模拟了开采，供应，矿石品位和市场价格。该评估报告预测，到2100年以后镍将出现短缺和供应问题。该模型重建了1850–2020年期间观察到的开采，供应和市场价格，并用于模拟2020–2200年期间的发展。根据WORLD7模型的模拟预测，镍矿石的质量从1850年到2020年已经显着下降，并且将来还会继续下降。对于镍，建议提炼率在2050年达到最大值，到2130年，大多数主要镍资源将被耗尽。如果到2100年以后，如果照常营业，镍的人均供应量将趋于枯竭。这将表现为供应减少和价格上涨。如果回收率得到显着提高，并且在稀缺可见之前很长时间，则高峰年份最多可以延迟100年。到2130年，大多数初级镍资源将被用尽。如果到2100年以后，如果照常营业，镍的人均供应量将减少。这将表现为供应减少和价格上涨。如果回收率得到显着提高，并且在稀缺可见之前很长时间，则高峰年份最多可以延迟100年。到2130年，大多数初级镍资源将被用尽。如果到2100年以后，如果照常营业，镍的人均供应量将减少。这将表现为供应减少和价格上涨。如果回收率得到显着提高，并且在稀缺可见之前很长时间，则高峰年份最多可以延迟100年。