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Mixture, method for recovering ferro-vanadium bag dedusting material, and vanadium extraction method

A bag dust removal and mixture technology, applied in the field of vanadium extraction, can solve the problems affecting the grade of ferrovanadium finished products, affecting the quality of ferrovanadium finished products, etc., and achieve the effect of smooth vanadium precipitation process of acid ammonium salt, and smooth recovery and filtration process.

Inactive Publication Date: 2013-08-21
PANZHIHUA IRON AND STEEL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the vanadium content in the ferro-vanadium cloth bag dust removal material is unstable and the material is light, it affects the grade of the finished product of ferrosanadium, and the dust removal material contains high elements such as Al, Mg, Mn, etc., so it affects the quality of the finished product of ferrosanadium
These have caused certain adverse effects on the production of ferrovanadium

Method used

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  • Mixture, method for recovering ferro-vanadium bag dedusting material, and vanadium extraction method
  • Mixture, method for recovering ferro-vanadium bag dedusting material, and vanadium extraction method
  • Mixture, method for recovering ferro-vanadium bag dedusting material, and vanadium extraction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Mix 100g iron-vanadium cloth bag dedusting material (see Table 1 for chemical composition), 1000g return slag (water content is 20.3% by weight, see Table 10 for specific composition), 1000g refined vanadium slag (see Table 2 for main chemical composition), and 150g sodium carbonate Put it into a crucible after uniformity, and in a muffle furnace at 800°C, use air as an oxidant, carry out sodium oxide roasting for 60 minutes to obtain clinker, the content of soluble vanadium in the clinker is 88.54% by weight, and the tail gas of the muffle furnace The oxygen content in the medium is 15% by weight. This clinker is carried out leaching (leaching three times, condition: water is leaching reagent, and water temperature is 90 ℃, the weight ratio of water and clinker is 1: 1, carries out suction filtration after each leaching, and the vacuum degree of suction filtration is 0.04MPa, the time for suction filtration is 5 minutes, and the leaching conditions of all the other emb...

Embodiment 2

[0053] 5 tons of vanadium-iron cloth bag dedusting material (see Table 3 for chemical composition) and 100 tons of return slag (water content is 20% by weight, and the specific composition is shown in Table 10) are mixed to obtain a mixture, and the mixture is separately sent into a multi-chamber roasting furnace (10 layer). Then 100 tons of refined vanadium slag (see Table 4 for the main chemical composition) and 24.5 tons of sodium carbonate are mixed evenly, and are sent into the multi-chamber roasting furnace from another entrance of the multi-chamber roasting furnace, and air is used as an oxidant to carry out sodium oxide roasting [The firing temperature and firing time of each layer in the multi-chamber roasting furnace: the first layer 300-330°C, the second layer 440-460°C, the third layer 550-570°C, the fourth layer 600-630°C, the fifth layer 680-700°C, 740-760°C for the sixth layer, 780-790°C for the seventh layer, 770-780°C for the eighth layer, 730-740°C for the ni...

Embodiment 3

[0055] Vanadium is extracted according to the method of Example 2, the difference is that the returned slag used is the returned slag with a water content of 18% by weight, the specific composition is shown in Table 10, and the soluble vanadium content in the obtained clinker is 90.21%, and the finally obtained V 2 o 3 Na in 2 O+K 2 O fluctuates between 0.2-0.5% by weight, with an average value of 0.37% by weight; S fluctuates between 0.01-0.03% by weight, with an average value of 0.02% by weight; it is a qualified product. The V 2 o 3 It is a high-quality raw material for smelting ferrovanadium. This result is equivalent to the effect of Example 2.

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Abstract

The invention provides a method for recovering ferro-vanadium bag dedusting material, and a mixture obtained by the method. The method includes mixing ferro-vanadium bag dedusting material with oxidizing-sodiumizing-calcining return slag. The invention also provides a vanadium extraction method, which includes mixing the mixture with refined vanadium slag and sodiumizing agent, and performing oxidizing-sodiumizing-calcining to obtain clinker; leaching the clinker with water to obtain leachate; removing phosphorus and silicon from the leachate to obtain a qualified solution; and performing vanadium precipitation to the qualified solution with acidic ammonium salt to obtain red vanadium. The method for recovering ferro-vanadium bag dedusting material effectively realizes recovery of the ferro-vanadium bag dedusting material, without effect on the quality of the oxidizing-sodiumizing-calcining return slag. The vanadium extraction method effectively realizes the recovery of the ferro-vanadium bag dedusting material.

Description

technical field [0001] The invention relates to a method for recycling iron-vanadium cloth bag dust removal material, a mixture obtained by the method for recycling iron vanadium cloth bag dust removal material and a method for extracting vanadium. Background technique [0002] When ferrovanadium is smelted, a large amount of vanadium-containing dust will be produced above the smelting furnace. The dust first enters the cyclone dust collector under the action of dust removal wind, and the material with a large specific gravity stays in the cyclone dust collector and becomes iron vanadium cyclone dust collector. The small material enters the bag filter along the central cyclone of the cyclone dust collector. Due to the barrier of the bag filter, the material stays at the bottom of the bag filter and becomes the vanadium iron bag filter material. The vanadium-iron bag filter material is discharged through the discharge screw at the bottom of the bag filter, and it is bagged (c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/02C22B34/22
CPCY02P10/20
Inventor 吴封刘丰强邓孝伯李千文谢辉蒲果
Owner PANZHIHUA IRON AND STEEL