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Method of preparing vanadium-containing clinker by using TiCl4 refined tailings

A technology of vanadium clinker and tailings, which is applied in the field of recycling titanium tetrachloride refined tailings, can solve the problems of environmental pollution and waste of resources, and achieve the effects of high yield, low production cost and wide application conditions

Active Publication Date: 2014-07-09
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only causes a great waste of resources, but also pollutes the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] Water-soluble vanadium-containing clinker was produced by using titanium tetrachloride refined tailings as raw materials in a 200L muffle furnace. The composition of titanium tetrachloride refined tailings contains 4% V by weight percentage 2 o 5 , 22% aluminum, 40% chlorine and 5% titanium.

[0019] The specific steps in this example are: (1) immerse 300kg of refined tailings in 3000kg of tap water, and then use a plate and frame for solid-liquid separation after 2 hours. The mass percentage of chlorine in the solid obtained from solid-liquid separation is 2.5%; (2) Mix the separated solid with 51kg of soda ash evenly; (3) Send the mixed material into a 200L muffle furnace for roasting, the roasting temperature is 780°C, the roasting time is 2.5h, and the muffle furnace presses 2Nm 3 / h into the air; (4) naturally cool the roasted material to room temperature, and simply crush it to obtain 200kg of water-soluble vanadium-containing clinker. After testing, the prepar...

example 2

[0022] In this example, the composition of the titanium tetrachloride refining tailings contained 7% by weight of V 2 o 5 , 18% aluminum, 30% chlorine and 4% titanium.

[0023] The specific steps of this example are: (1) immerse 300kg of refined tailings in 3300kg of tap water, and use a plate and frame for solid-liquid separation after 2.5 hours. The mass percentage of chlorine in the solid obtained from solid-liquid separation is 2.1%; (2) Mix the separated solid with 50kg of sodium hydroxide evenly; (3) Send the mixed material into the muffle furnace for roasting, the roasting temperature is 840±10°C, the roasting time is 2h, and the muffle furnace presses 2.5Nm 3 / h into the air; (4) naturally cool the calcined material to room temperature, and simply crush it to obtain 250kg of water-soluble vanadium-containing clinker. After testing, the prepared water-soluble vanadium-containing clinker contains 8.1% V by weight percentage. 2 o 5 . After calculation, in this exampl...

example 3

[0025] In this example, the composition of the titanium tetrachloride refining tailings contains 12% by weight of V 2 o 5 , 16% aluminum, 25% chlorine and 6% titanium.

[0026] The specific steps in this example are: (1) immerse 300kg of refined tailings in 4000kg of tap water, and use a plate frame for solid-liquid separation after 3 hours. The mass percentage of chlorine in the solid obtained from solid-liquid separation is 1.2%; (2) Mix the separated solid with 53kg sodium chloride evenly; (3) send the mixed material into the muffle furnace for roasting, the roasting temperature is 880±10°C, the roasting time is 2h, and the muffle furnace presses 1.8Nm 3 / h into the air; (4) naturally cool the calcined material to room temperature, and simply crush it to obtain 270kg of water-soluble vanadium-containing clinker. After testing, the prepared water-soluble vanadium-containing clinker contains 12% V by weight percentage. 2 o 5 . After calculation, in this example, the reco...

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PUM

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Abstract

The invention provides a method of preparing a vanadium-containing clinker by using TiCl4 refined tailings. The method comprises the steps of carrying out water soaking treatment on the titanium tetrachloride refined tailings, controlling the mass ratio of water and the titanium tetrachloride refined tailings no less than 10:1, and then carrying out solid-liquid separation; uniformly mixing a solid obtained after solid-liquid separation and a sodium-containing additive according to the mass ratio of 100:(17-21), wherein the sodium-containing additive comprises alkali or slat of sodium; and roasting a mixture of the solid and the sodium slat in the air environment at the temperature of 780-900 DEG C, and cooling to obtain the water-soluble vanadium-containing clinker. The method has the advantages that the method and procedure are simpler, subsequent water soaking and vanadium precipitating devices does not need to be established, the investment is little, and the production cost is low; with the adoption of the process, the vanadium yield is high (for example, the vanadium yield can reach above 90 percent), the quality of the prepared vanadium-containing clinker is high, and the application condition is wide; and the titanium tetrachloride refined tailings with the characteristic of high pollution can be effectively utilized.

Description

technical field [0001] The invention relates to the technical field of recovery and utilization of titanium tetrachloride refined tailings, in particular to a 4 A method for producing water-soluble vanadium-containing clinker by refining tailings. Background technique [0002] Generally speaking, there is a process for preparing titanium tetrachloride for both the sponge titanium production process (for example, the kroll method) and the chloride titanium dioxide production process. In the process of preparing titanium tetrachloride, vanadium element is VOCl 3 and other forms as impurities into the crude titanium tetrachloride, and then into the aluminum vanadium chloride mud during the refining process, and separated from titanium tetrachloride; at high temperature, the TiCl in the vanadium-containing mud is evaporated 4 , and finally the refined tailings with high vanadium content remain. [0003] For titanium tetrachloride refined tailings, vanadium can be extracted by...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B34/22
CPCY02P10/20
Inventor 李良陆平张玉杰杜明李冬勤刘森林杨仰军
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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