过去20年,钽工业供需波动很大,其结果造成钽产品价格变化不定。与其它稀有金属工业的周期性变化相比,钽工业的不稳定性表现得尤为突出。主要原因是过去20年钽工业的需求水平从每年不足100万磅Ta_2O_5矿量,增加到现在的300万磅。而同一时期,廉价的副产原料锡渣的供应则从高峰时的每年80万磅Ta_2O_5,降到现在的50万磅Ta_2O_5。供求的巨大变化 Over the past two decades, tantalum industry has fluctuated greatly in terms of supply and demand, resulting in tantalum product prices fluctuating. The tantalum industry’s instability is particularly pronounced when compared to the cyclical changes in other rare metals industries. The main reason is that the demand level of the tantalum industry in the past 20 years has increased from less than 1 million pounds of Ta 2 O 5 per year to 3 million pounds now. During the same period, the supply of cheap by-product raw material dross decreased from 800,000 pounds of Ta 2 O 5 per year at peak to 500,000 pounds of Ta 2 O 5 now. Great changes in supply and demand