仿真探讨磷矿组分对过磷酸钙生产的影响规律

过磷酸钙是我国传统的磷肥品种之一,采用工艺计算方法,仿真探讨了磷矿中主要组分氟磷酸钙、碳酸钙(镁)、三氧化铁(铝)和氟化钙对过磷酸钙生产指标的影响规律,结果表明:氟磷酸钙质量分数增大,过磷酸钙产品的质量指标(有效P2O5、游离磷酸P2O5、游离水等的质量分数)随之增大,产率和硫酸消耗定额也随之增大,磷矿消耗定额随之降低...

Simulative study on the influence of phosphate components on the production of calcium superphosphate

Calcium superphosphate(SSP)is one of the traditional phosphate fertilizers in China.In this paper,process computation method was used to simulate the influence of such main components contained in phosphate rock as calcium fluorophosphate,calcium(magnesium)carbonate,iron(aluminum)trioxide and calcium fluoride on the production of calcium superphosphate.The increase of calcium fluorophosphates content make it possible for the improvement on the quality(content of effective P 2O 5,free phosphoric acid P 2O 5 and free water)of calcium superphosphate product and for the increase of the production yield with higher consumption of sulfuric acid and lower consumption of phosphate rock.As the content of carbonates,sesquioxide and calcium fluoride was increasing,the effective P 2O 5 content in SSP product,P 2O 5 content in free phosphoric acid and the consumption of phosphate rock were decreasing,but the free water content,weight yield of product and sulfuric acid consumption were going up.The increase of the content of calcium fluorophosphates facilitated the SSP production.However among the above,the Al 2O 3 content had the most negative impact on the quality of SSP products,while the negative impact of CaCO 3 content was the least.