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Method for synchronously separating iron, vanadium and manganese in vanadium extracting tailings

A technology for extracting vanadium tailings and synchronizing separation is applied in the field of metallurgy, which can solve problems such as separation of metals such as iron and vanadium not involved, and achieve the effects of improving resource utilization rate, high metal recovery rate and less waste.

Active Publication Date: 2015-11-04
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

However, the separation of metals such as iron and vanadium has not yet been involved

Method used

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  • Method for synchronously separating iron, vanadium and manganese in vanadium extracting tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] A treatment method for extracting vanadium tailings, the concrete steps are:

[0061] a) Agglomeration: adding 20% ​​sodium carbonate, 8% coal powder and 1% bentonite to the vanadium extraction tailings to make pellets;

[0062] b) Reduction: Dry the above-mentioned green balls and carry out reduction roasting, the roasting temperature is 1100°C, and the roasting time is 60 minutes;

[0063] c) Grinding and leaching: take out the above-mentioned roasted ore for water quenching, place the obtained pulp in a wet ball mill for ball milling and leaching while it is hot, control the concentration of the pulp to 15-30%, the leaching temperature is 70°C, and the leaching time is 60 minutes;

[0064] d) Separation: filter and separate the above pulp to obtain vanadium leaching solution and leaching slag, and magnetically separate the leaching slag to obtain iron concentrate and tailings, with a magnetic field strength of 0.1-0.3T.

Embodiment 2

[0066] A treatment method for extracting vanadium tailings, the concrete steps are:

[0067] a) Agglomeration: adding 15% sodium hydroxide, 8% coal powder and 2% bentonite to the vanadium extraction tailings to make pellets;

[0068] b) Reduction: Dry the above-mentioned green balls and carry out reduction roasting, the roasting temperature is 1150°C, and the roasting time is 50 minutes;

[0069] c) Grinding and leaching: take out the above-mentioned roasted ore for water quenching, place the obtained pulp in a wet ball mill for ball milling and leaching while it is still hot, control the concentration of the pulp to 15-30%, the leaching temperature is 90°C, and the leaching time is 40 minutes;

[0070] d) Same as step d) of Example 1.

Embodiment 3

[0072] A treatment method for extracting vanadium tailings, the concrete steps are:

[0073] a) Agglomeration: adding 30% sodium sulfate, 10% coal powder and 0.5% bentonite to the vanadium extraction tailings to make pellets;

[0074] b) Reduction: Dry the above-mentioned green balls and carry out reduction roasting, the roasting temperature is 1200°C, and the roasting time is 45 minutes;

[0075] c) Grinding and leaching: take out the above-mentioned roasted ore for water quenching, place the obtained pulp in a wet ball mill for ball milling and leaching while it is still hot, control the concentration of the pulp to 15-30%, the leaching temperature is 65°C, and the leaching time is 55 minutes;

[0076] d) Same as step d) of Example 1.

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Abstract

The invention discloses a method for synchronously separating iron, vanadium and manganese in vanadium extracting tailings. According to the method, the vanadium can be converted into soluble vanadate in the iron reduction process by adding sodium salt, and in other words, vanadium conversion and iron reduction are performed at the same time. Calcined ore is processed through water quenching, not only can heat of the calcined ore be fully utilized to reach needed leaching temperature, but also crushing and ore grinding loads can be reduced, and electric consumption is reduced. Then, the vanium enters a solution through ore grinding leaching; the iron and the manganese are separated through weak magnetic separation according to magnetic differences, and therefore the iron, the vanadium and the manganese can be synchronously separated. The method has the beneficial effects of being simple in technology, low in energy consumption and high in metal recovery rate; the vanadium extracting tailings can be efficiently utilized; and the method plays an important role in increasing the resource utilization rate of vanadium titano-magnetite.

Description

technical field [0001] The invention belongs to the field of metallurgy, and in particular relates to a method for synchronously separating iron, vanadium and manganese from vanadium extraction tailings. Background technique [0002] Vanadium-titanium magnetite is an important mineral resource in my country, and it is the main raw material for the production of vanadium-titanium materials in China. At present, blast furnace smelting is the main utilization method of vanadium-titanium magnetite. This method allows vanadium to enter molten iron to be oxidized and blown to form vanadium slag for vanadium extraction. [0003] The slag containing vanadium oxide obtained from vanadium-containing iron concentrate through wet vanadium extraction is called vanadium slag, and the residue after vanadium extraction from vanadium slag is called vanadium extraction tailings. Because the vanadium content in vanadium slag is relatively low, and the addition of additives when extracting van...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B1/02C22B34/22C22B47/00
CPCY02P10/20
Inventor 曾冠武郝建璋黎建明文永才
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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