Acidic full-vanadium-titanium pellets and preparation method thereof

A technology of pelletizing and vanadium-titanium magnetite concentrate, which is applied in the field of metallurgy to achieve the effects of wide application range, reduced coke ratio, and improved technical and economic indicators
CN102220486AInactive Publication Date: 2011-10-19PANZHIHUA IRON AND STEEL +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PANZHIHUA IRON AND STEEL
Publication Date
2011-10-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method for acidic full-vanadium-titanium pellets using high-titanium vanadium-titanium magnetite. The method comprises the following steps of: proportioning, mixing, drying, wet-milling, pelletizing, drying, preheating, baking, cooling, screening and like. The raw materials for the pellets provided by the invention mainly comprise full-vanadium-titanium magnetite concentrate, the ratio of which can be up to 100%, a small amount of a binder is mixed for pelletizing and baking is carried out to prepare the finished product pellets. Using the method provided by the invention to prepare the acidic full-vanadium-titanium pellets has wide range of raw materials, especially solves the difficulty in the pellet manufacture from vanadium-titanium magnetite concentrate and lowers the manufacture cost of the pellets by using single full-vanadium-titanium magnetite concentrate to process pellets, and the technical and economic indexes such as utilization coefficient and coke ratio of the blast furnace using the acidic full-vanadium-titanium pellets for smelting are improved.
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Description

technical field

[0001] The invention belongs to the technical field of metallurgy, and in particular relates to an acidic all-vanadium-titanium pellet and a method for preparing the acidic all-vanadium-titanium pellet by using high-titanium full-vanadium-titanium magnetite concentrate. Background technique

[0002] Pellets have good mechanical strength and metallurgical properties, and have become an important high-quality metallurgical charge. At present, the more commonly used charge structure is "high alkalinity sinter + acidic oxidation pellets". Industrial tests have shown that with the increase of the proportion of pellets, the alkalinity of sintered ore is correspondingly increased to 2.4-2.5. The sinter production shows that when the sinter basicity exceeds 2.4, the sinter finished product has a finer grain size and lower strength, which has a great impact on blast furnace smelting. Therefore, the basicity requirements for acid pellets are strictly limited, and the...

Claims

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