A method for producing acid-soluble titanium slag powder by direct granulation

Abstract

The invention relates to a method for producing acid-dissolved titanium slag powder through a direct granulation method. According to the method, the acid-dissolved titanium slag powder is prepared by adopting a following granulation device, wherein the granulation device comprises a molten metal injection structure, a rotary granulation system, a cooling system and a water circulation system; the molten metal injection structure is used for injecting acid-dissolved titanium slag into the rotary granulation system; the rotary granulation system is used for granulating the acid-dissolved titanium slag; the cooling system is used for cooling particles produced in a granulation process; the water circulation system is used for collecting and recycling cooling water; and the acid-dissolved titanium slag particles obtained by adopting a preparation device are collected into an acid-dissolved titanium slag powder collector and are crushed through a ball mill to obtain titanium slag powder of which the particle size is less than 0.04mm and the proportion is more than 98%. Generation of a rutile phase can be inhibited as much as possible when the acid-dissolved titanium slag powder is produced by adopting the method, and the production efficiency is higher.

Description

technical field [0001] The invention relates to the technical field of metal particle preparation, in particular to a method for producing acid-soluble titanium slag powder by direct granulation. Background technique [0002] my country is rich in vanadium-titanium magnetite resources, mainly distributed in Panzhihua, Sichuan and Chengde, Hebei. Panxi is the most abundant area of ​​vanadium and titanium resources in China, and the prospective reserves of vanadium-titanium magnetite exceed 10 billion tons. Vanadium-titanium magnetite is processed to obtain iron concentrate and titanium concentrate. The titanium concentrate is reduced and smelted in an electric furnace to obtain semi-steel and titanium-rich slag. The titanium-rich slag is then subjected to sulfuric acid or chlorination to obtain titanium white. Other titanium products can be prepared as a basis. Due to the high content of MgO and CaO in Panzhihua titanium slag, it is difficult to use the chlorination method ...

AI Technical Summary

Problems solved by technology

However, the water spray quenching method not only consumes a large amount of water, but also does not recover the heat of the molten titanium slag at all.

In addition, in the subsequent production process, it is necessary to dehydrate and dry the titanium slag, which increases the production cost of acid-soluble titanium slag.

The atomization process using air as the cooling medium to produce titanium slag not only consumes a lot of power for the fan, but also easily forms a rutile phase during the production process, which is not conducive to acidolysis by sulfuric acid method

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