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Intensive vanadium pentoxide production process

A technology of vanadium pentoxide and production process, which is applied in the field of intensive vanadium pentoxide production technology, can solve the problem of difficult to apply ore raw materials of different structures and properties, difficult recycling of waste water and waste residue, high loss of raw materials and high energy consumption, etc. problems, to achieve the effect of preventing sulfuric acid mist from escaping, improving resin utilization, and low cost

Inactive Publication Date: 2019-07-19
内乡县万鑫化冶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the above methods are roasted in flat kilns or rotary kilns, leached with carbonate and then extracted to extract vanadium. Not only is it difficult to apply to ore materials with different structures and properties, especially high-carbon or high-calcium stone coal mines, Low, raw material loss and energy consumption are large, and the waste water and waste residue generated at the same time are difficult to recycle, not green enough

Method used

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  • Intensive vanadium pentoxide production process
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Examples

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Effect test

Embodiment 1

[0037] An intensive vanadium pentoxide production process, comprising the following steps:

[0038] (1) Raw material pretreatment

[0039] Dry the vanadium ore until the moisture content is below 3%, and ball mill it to obtain vanadium ore powder with a fineness of 120 meshes. Add 3% lime powder and 12% vanadium ore powder to the vanadium ore powder after ball milling. The weight of water is stirred and mixed evenly and sent to the ball pressing machine to make pellets with a diameter of 4cm;

[0040] (2) Shaft kiln roasting

[0041] Put the above-prepared pellets into a vertical vanadium ore roasting furnace with a temperature of 850°C through a disc distributor, and roast them for 28 hours in an aerobic atmosphere to obtain clinker balls, and send the clinker balls into a vertical mill to grind them finely Sieve to obtain clinker powder with particle size ≤ 3mm;

[0042] (3) dilute acid leaching

[0043] Add water and concentrated sulfuric acid accounting for 1% of the a...

Embodiment 2

[0054] An intensive vanadium pentoxide production process, comprising the following steps:

[0055] (1) Raw material pretreatment

[0056] Dry the vanadium ore until the moisture content is below 3%, and ball mill it to obtain vanadium ore powder with a fineness of 140 mesh. Add 7% of the vanadium ore powder weight lime powder and 15% vanadium ore powder to the vanadium ore powder after ball milling The weight of water is stirred and mixed evenly and sent to the ball pressing machine to make pellets with a diameter of 5cm;

[0057] (2) Shaft kiln roasting

[0058] Put the above-prepared pellets into a vertical vanadium ore roasting furnace with a temperature of 900°C through a disc distributor, and roast them for 24 hours under an aerobic atmosphere to obtain clinker balls, and send the clinker balls into a vertical mill to grind finely Sieve to obtain clinker powder with particle size ≤ 3mm;

[0059] (3) dilute acid leaching

[0060] Add water and concentrated sulfuric ac...

Embodiment 3

[0071] An intensive vanadium pentoxide production process, comprising the following steps:

[0072] (1) Raw material pretreatment

[0073] Dry the vanadium ore until the moisture content is below 3%, and ball mill it to obtain vanadium ore powder with a fineness of 150 mesh. Add 10% lime powder and 20% vanadium ore powder to the vanadium ore powder after ball milling The weight of water is stirred and mixed evenly and sent to the ball pressing machine to make pellets with a diameter of 6cm;

[0074] (2) Shaft kiln roasting

[0075] Put the above-prepared pellets into a vertical vanadium ore roasting furnace at a temperature of 950°C through a disc feeder, and roast them for 20 hours under an aerobic atmosphere to obtain clinker balls, and send the clinker balls into a vertical mill for fine grinding Sieve to obtain clinker powder with particle size ≤ 3mm;

[0076] (3) dilute acid leaching

[0077] Add water and concentrated sulfuric acid accounting for 3% of the amount of ...

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Abstract

The invention relates to the technical field of metallurgy and discloses an intensive vanadium pentoxide production process. The production process comprises the following steps of (1), raw material pretreating; (2), vertical kiln roasting; (3), dilute acid leaching; (4), ion exchanging; (5), desorption transforming; (6), vanadium precipitating; (7), calcining deamination sheet. The intensive vanadium pentoxide production process has the advantages of being high in production efficiency, low in energy consumption, safe and stable, green and environment-friendly, wide in application range, andfree of harmful gases such as chlorine, hydrogen chloride, sulfur oxide in the vanadium preparation process., the waste residue which is roasted and leached does not contain sodium salt, the waste residue is rich in calcium and can be used as a building material, the waste water generated by the method can be recycled, the emission of industrial three wastes is greatly reduced, the post-treatmentcost is reduced, and the process is more energy-saving and environment-friendly; in addition, the roasting conversion rate of the vanadium in the production process is up to more than 89%, the leaching yield is up to more than 95%, the total recovery rate is up to more than 80%; the purity of the vanadium pentoxide is up to more than 99%.

Description

technical field [0001] The patent of the invention relates to the field of metallurgy technology, especially an intensive production process of vanadium pentoxide. Background technique [0002] Vanadium is an important non-ferrous metal with many excellent physical and chemical properties, so vanadium and its alloys have been widely used in metallurgy, petrochemical, national defense, aerospace, chemistry, medicine and many other fields. At present, in industrial production, vanadium-containing stone coal and vanadium slag are generally used as raw materials to extract vanadium, and the commonly used vanadium extraction methods mainly include: sodium roasting, calcium roasting, blank oxidation roasting and composite roasting, of which sodium roasting is due to Small investment, mature technology and simple operation have become the methods commonly used by vanadium enterprises at home and abroad. However, because sodium roasting usually needs to add sodium salt (soda, salt)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/24C22B1/02C22B3/08C22B3/42C22B3/44C22B34/22
CPCC22B1/02C22B1/24C22B3/08C22B3/42C22B3/44C22B34/22Y02P10/20
Inventor 张广林王思迅张振东王自臣
Owner 内乡县万鑫化冶有限公司
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