A kind of titanium-containing red mud composite binder and preparation method thereof

Abstract

The invention relates to a titaniferous red mud compound binder and a preparation method thereof. The titaniferous red mud compound binder is prepared by selecting, drying, crushing and uniformly mixing waste red mud of aluminium manufactures and fine ash of converters of iron and steel plants according to a ratio of (65%-95%):(5%-35%). The prepared titaniferous red mud compound binder is mainly used for granulating titanium and iron-containing concentrate, has the characteristics of good binding effect, low price, high iron and titanium contents and the like, and can partially or completely be used for substituting for conventional organic binders and inorganic binders to produce titanium and iron-containing concentrate pellets. Compared with the organic binder which is used for completely producing the titanium and iron-containing concentrate pellets, the compound binder is greatly lowered in production cost, and iron and titanium elements in the red mud and fine ash of the converters can be effectively recycled. Compared with the inorganic binder which is used in the whole process, the compound binder is improved in pellet grade.

Description

technical field [0001] The invention relates to the technical fields of chemical industry and metallurgy industry, in particular, the invention relates to a titanium-containing red mud composite binder and a preparation method thereof. Background technique [0002] With the development of the iron and steel industry, people have been able to process titanium-containing iron fine powder through the melting process, so that the titanium and iron elements in the ore can be effectively recovered. The current process of treating ferro-titanium fine powder is generally the first process of mixing, that is, mixing ferro-titanium fine powder, flux, binder, etc., and the binder is an indispensable and important part of the process. It should have good ball forming ability so that the pellets made have good performance. At present, the binders that have been used mainly include inorganic binders, such as bentonite, water glass, slaked lime, cement, clay, etc.; organic binders, such a...

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Problems solved by technology

[0003] The inorganic binder is mainly bentonite. Although the price of bentonite is low, the main composition of bentonite is SiO 2 and Al 2 o 3 , using bentonite as a binder to produce pellets will have adverse effects such as decreased total iron TFe content of finished pellets, increased flux addition, increased slag, decreased recovery of useful elements, increased production energy consumption, and decreased productivity.

Although the organic binder has almost no impact on the quality of the final pellets, it is often prohibitive for manufacturers because of its high price (generally ten times or more the price of bentonite)

[0004] In order to ensure full recovery of titanium and iron in ferrotitanium-containing fine powder, manufacturers often use organic binders, and to achieve the same quality green balls, the amount of organic binders is often more than that of inorganic binders. , sometimes even 2 to 3 times the amount of the inorganic binder, which puts a lot of pressure on the production cost and also leads to a reduction in production capacity

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