Purification and impurity removal plan for titanium iron tailings

Purification and impurity removal plan for titanium iron tailings

Ferrotitanium tailing is a by-product of ferrotitanium ore, which is mainly composed of titanium dioxide, iron, silicon, aluminum and other components. Due to its high content of harmful elements and impurities, it poses certain risks to the environment and human health. Therefore, the purification and impurity removal of titanium iron tailings is particularly important. This article will introduce a purification and impurity removal scheme for titanium iron tailings, in order to provide some reference for workers in related fields.

1、 Properties of titanium iron tailings

Titanium iron tailings are a very fine powder like substance, mainly composed of elements such as titanium dioxide, iron, silicon, and aluminum. Among them, titanium dioxide is the highest content element in titanium iron tailings, generally reaching over 80%. In addition, ferrotitanium tailings also contain a certain amount of harmful elements and impurities, such as heavy metals, Radioactive element, fluoride, etc.

2、 Purification and impurity removal plan for titanium iron tailings

1. Physical methods

Physical method is a common method for purifying and removing impurities from titanium iron tailings. The basic principle is to use different physical methods for separation based on the differences in the physical properties of various elements and impurities in titanium iron tailings. The commonly used physical methods include magnetic separation, gravity separation, screening, etc.

(1) Magnetic separation method

Magnetic separation method is a method of separating iron from titanium iron tailings using magnetic substances. The basic principle is to mix titanium iron tailings with magnetic substances, and through the action of a magnetic field, the magnetic substances adsorb the iron in the titanium iron tailings, thereby achieving separation. This method is easy to operate and has good separation effect, but it has poor separation effect for other elements and impurities.

(2) Reselection method

Gravity separation is a method of separation by using the difference of material density. The basic principle is to mix titanium iron tailings with heavy liquid and separate them through centrifugation or oscillation. This method is suitable for the separation of elements and impurities with different densities in titanium iron tailings, such as iron and titanium.

(3) sieving method

The screening method is a method of separation using a sieve. The basic principle is to screen titanium iron tailings through screens of different particle sizes, in order to separate particles of different particle sizes. This method is suitable for situations where titanium iron tailings contain elements and impurities of different particle sizes.

2. Chemical methods

Chemical method is a method of separation that utilizes chemical reactions. The basic principle is to achieve separation by chemically changing the elements and impurities in titanium iron tailings through chemical reactions. The commonly used chemical methods include leaching, dissolution, reduction, etc.

(1) Leaching method

Leaching method is a method of separating titanium iron tailings by soaking them in an acidic or alkaline solution to dissolve certain elements and impurities. This method is suitable for the separation of soluble elements and impurities in titanium iron tailings, such as aluminum, silicon, and other elements.

(2) Dissolution method

Dissolution method is a method of separating titanium iron tailings by dissolving them in acidic or alkaline solutions to dissolve certain elements and impurities. This method is suitable for the separation of soluble elements and impurities in titanium iron tailings, such as fluoride.

(3) Reduction method

Reduction method is a method of separating certain elements and impurities in titanium iron tailings by reducing them to their original state using a reducing agent. This method is suitable for the separation of reducible elements and impurities in titanium iron tailings, such as iron.

III. Summary

In summary, the purification and impurity removal of titanium iron tailings is a very important task. In addition to the physical and chemical methods introduced above, there are also other methods that can be used for the purification and impurity removal of titanium iron tailings, such as microbial methods, electrochemical methods, etc. Different methods are suitable for different situations and need to be selected based on specific circumstances. I hope this article can provide some reference for workers in related fields.

Purification and impurity removal plan for titanium iron tailings