Titanium dioxide and preparation method and production system thereof

The invention belongs to the technical field of metallurgical engineering, and discloses titanium dioxide as well as a preparation method and a production system.The preparation method comprises the following steps: step 1, carrying out leaching reaction on preparation raw materials and a sulfuric acid solution under the condition of blowing oxygen-containing gas, and collecting leachate; 2, blowing carbon dioxide into the leachate obtained in the step 1 for reaction, collecting precipitates after the reaction is finished, and calcining the precipitates to obtain titanium dioxide; the preparation raw material is any one of ilmenite, titanium-containing blast furnace slag and high titanium slag. The preparation method has the advantages of simple process, no need of additional impurity removal step, low production cost, high purity of the prepared product, and easy industrial production. 本发明属于冶金工程技术领域，公开了一种钛白粉及其制备方法与生产系统，其中制备方法包括如下步骤：步骤一、将制备原料与硫酸溶液在喷吹含氧气体的条件下进行浸出反应，收集浸出液；步骤二、向步骤一的浸出液中喷吹二氧化碳进行反应，反应结束后收集沉淀，将沉淀煅烧