1987年世界纯碱需求量为3020万吨,由36个国家的88家工厂提供。美国产量约为30%,占世界领先地位(表1)。1987年,美国的纯碱业颇为景气,无论国内市场还是出口市场,需求量都有所增长。继三年无增长后,1987年以4%的增长率增加到810万吨。而总的生产能力仍为920万吨而没有变化。目前的实际生产能力已接近870万吨,为 In 1987, the world’s soda ash demand was 30.2 million tons, which was provided by 88 factories in 36 countries. The U.S. production is about 30%, accounting for the world’s leading position (Table 1). In 1987, the soda industry in the United States was quite booming, and both the domestic market and the export market saw an increase in demand. After three years of no growth, it increased to 8.1 million tons in 1987 at a growth rate of 4%. The total production capacity is still 9.2 million tons and there is no change. The current actual production capacity is close to 8.7 million tons.