【摘要】 湿法氟化盐工艺中的制盐部分工艺,因是在高温下氢氟酸与氢氧化铝反应,合成的三水合氟化铝经2步或3步煅烧脱水得无水氟化铝,致使氢氟酸损失大,转化率低,产品质量差,环境污染严重。在小试、中试的基础上,提出低温中和、一步煅烧新的改进工艺,较好地解决了现行工艺中存在的问题,提高了产品竞争力。更多还原

【Abstract】 Due to the reaction between HF acid and Al（OH）₃ under the circumstance of high temperature,(AlF₃·3H₂O) combined by the reaction,through two or three steps of calcining and dehydrating,is turned into anhydrous AlF₃,and this,as a result,causes big loss of HF acid,low rate of transformation,bad quality of products, and severe environmental pollution.The new improving technique--"neutralization with low temperature,and one-step calcining"based on lab.experiments and pilot experiments, preferably solves the problem in the existing process,and meanwhile it also increases the competitive ability of the product.更多还原