预混工艺对钛矿酸解的影响  

Effect of Premixing Process on Acidolysis of Ilmenite Concentrate

作　　者：吴健春[1] 王斌[1] 陈新红[1] 

机构地区：[1]攀钢集团研究院有限公司,钒钛资源综合利用国家重点实验室,四川攀枝花617000

出　　处：《钢铁钒钛》2013年第6期17-20,共4页Iron Steel Vanadium Titanium

摘　　要：以硫酸法钛白酸解工序产生的难浸取固相物为研究对象,对其结构和成分进行了深入分析,经实验室验证得出:酸矿混合不均匀,酸解反应不完全是产生大量酸解难浸取固相物的主要原因。以某钛白粉厂酸解预混工艺为例,进一步分析影响预混效果的因素,并提出解决措施,通过调整配酸方式,降低了硫酸温度,彻底解决了该厂酸解率低和酸解固相物居高不下的难题,使该厂酸解率达到96%,酸解锅壁上的残余固相物体积从30 m3下降到3 m3以下。To reduce the insolvable solid-phase object emerged during acidolysis of sulfate process route for titanium pigment production, the structures and compositions of the object are analyzed. It can be concluded through laboratory experiments that insufficient mixing of sulfuric acid and ilmenite concen- trates and incomplete acidolysis reaction are main reasons for forming the solid-phase object which is diffi- cult to be leached during acidolysis. Through taking the premixing process for acidolysis in a certain tita- nium pigment plant as an example, the factors that affect the premixing effects are further analyzed and solutions are proposed. By adjusting the preparation of sulfuric acid and reducing the temperature of sul- furic acid, the problems including low leaching rate and large volume of residual solid-phase object are completely solved with the leaching rate reaching 96% and the volume of solid-phase object on the wall of aeidolysis pot reducing from 30 m3 to less than 3 m3.

关 键 词：硫酸法钛白 预混工艺 酸解 固相物 

分 类 号：TF823[冶金工程—有色金属冶金] TF044