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据有关专家预测,世界无氯钾肥的消耗量将以每年4％-5％的速度递增。据农业部最近对我国钾肥需求预测,按氮、磷、钾施肥比例1:0.5:0.25计算,到2000年我国需钾肥460万吨,届时我国无氯钾肥的消费量将占钾肥消费总量的11％～15％,无氯钾肥的需求量将达70万吨。无氯钾肥的主要品种是硫酸钾和硝酸钾。硫酸钾是优质无氯钾肥和复合肥的添加剂,其施用效果优于氯化钾。目前我国每年生产硫酸钾不足10万吨,进口50万吨,还有少量硝酸钾进口。从产品质量上看,硝酸钾优于硫酸钾,但从原料上分析,生产硫酸钾所需原料比生产硝酸钾原料容易获取。在
According to the prediction of relevant experts, the consumption of chlorine-free potash in the world will increase at a rate of 4%-5% per year. According to the Ministry of Agriculture’s recent forecast of potash fertilizer demand in China, the ratio of nitrogen, phosphorus and potassium fertilizers is calculated at 1:0.5:0.25. By the year 2000, China will need 4.6 million tons of potash fertilizer. By that time, the consumption of chlorine-free potash fertilizer in China will account for the total consumption of potash fertilizer. From 11% to 15%, the demand for chlorine-free potash will reach 700,000 tons. The main varieties of chlorine-free potash are potassium sulfate and potassium nitrate. Potassium sulphate is an additive of high-quality chlorine-free potash and compound fertilizer, and its application effect is better than that of potassium chloride. At present, China produces less than 100,000 tons of potassium sulfate per year, imports 500,000 tons, and a small amount of potassium nitrate imports. From a product quality point of view, potassium nitrate is better than potassium sulfate, but from the analysis of raw materials, raw materials required for the production of potassium sulfate are easier to obtain than raw materials for the production of potassium nitrate. in