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最近几年,硫酸曾一度涨库滞销,这主要是大量进口复合化肥,使国产磷肥产量急剧下降所致。我国生产磷肥所需硫酸量,约占全国酸产量的一半以上。磷肥生产的兴衰直接影响硫酸的生产与销售。如1986年磷肥产量增加50万吨,硫酸的销售情况明显好转,开始由长线变成短线。今年磷肥生产计划比1986年大约增加23%以上,而硫酸产量只增加4.8%,这就是今年全国硫酸供应出现紧张的根本原因。
In recent years, sulfuric acid was once upside slow sales, which is mainly a large number of imports of compound fertilizers, resulting in a sharp decline in domestic phosphate fertilizer production. The amount of sulfuric acid needed to produce phosphate fertilizer in China accounts for more than half of the national acid output. The rise and fall of phosphate fertilizer production directly affects the production and sales of sulfuric acid. Such as the increase in phosphate fertilizer production in 1986 500,000 tons, sulfuric acid sales improved significantly, began to change from long-term to short-term. This year’s phosphate fertilizer production plan than in 1986 increased by about 23%, while the sulfuric acid production increased by only 4.8%, which is the root cause of this year’s national sulfuric acid supply tension.