钨在地壳中并不是一种稀有元素,甚至像铜一样丰富。目前,全世界至少有25个国家生产钨精矿。中国是产钨的头号大国,1986年,其产量及储量分别占世界总最的33%及35%。加拿大的钨储量居世界第二位,占19%,但其产量仅占世界总产量的3%。 Tungsten in the earth’s crust is not a rare element, even as rich as copper. At present, at least 25 countries around the world produce tungsten concentrates. China is the largest producer of tungsten in the country. In 1986, its output and reserves accounted for 33% and 35% of the world’s total respectively. Canada has the second largest tungsten reserves in the world, accounting for 19%, but its output only accounts for 3% of the world’s total output.