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Vanadium-silicon-manganese alloy and method for producing vanadium-silicon-manganese alloy by scrapped vanadium slag

A technology of silicomanganese alloy and vanadium slag, which is applied in the field of vanadium slag treatment, can solve the problems of time-consuming and laborious, the waste vanadium slag cannot be extracted by wet method, and the increase of production cost of vanadium slag deep processing, so as to achieve convenient operation and simple process Effect

Inactive Publication Date: 2018-08-24
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

[0004] Waste-free vanadium slag is a mixed vanadium slag with 50% iron content and 50% vanadium slag. Waste-free vanadium slag cannot be used for vanadium extraction by wet process, so there is no effective treatment method at present, and it is often used in production It is returned to the previous process for recycling and used as a coolant for vanadium extraction in the converter, which is not only time-consuming and laborious, but also further increases the production cost of vanadium slag deep processing
At present, there is no method that can effectively treat the waste vanadium slag and recover the valuable elements in the vanadium slag to meet the needs of steelmaking

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The embodiment of the present invention provides a vanadium-silicon-manganese alloy, the specific preparation method of which is as follows:

[0031] Add 200kg of iron blocks to the 1t induction furnace for the absolute waste vanadium slag and melt it together for pretreatment. 2 o 5 The content of the vanadium slag is 10wt%, and then the vanadium slag is crushed and melted to form a vanadium slag raw material of less than 100mm, and then according to the composition requirements of the vanadium silicon-manganese alloy, the reasonable proportion of the vanadium slag raw material and aluminum is calculated according to the ratio of aluminum (particle size 1-50mm) 1.04 Matching and mixing operation, then gradually add 1000kg of prepared raw materials into 1t electric arc furnace for alloying operation, when the reduction temperature in the furnace is 1550-1950°C, keep the temperature in the molten state for 1 hour for reduction reaction, and then dump Take out 1 / 3 of the...

Embodiment 2

[0034]The embodiment of the present invention provides a vanadium-silicon-manganese alloy, the specific preparation method of which is as follows:

[0035] First, add 400kg of iron blocks to the 2t induction furnace and melt the vanadium slag together for pretreatment. The furnace is energized and kept at a constant temperature in the range of 1550-1650°C to make the vanadium slag V 2 o 5 The content of the vanadium slag is 20wt%, and then the vanadium slag is broken and melted to form a vanadium slag raw material below 100mm, and then according to the composition requirements of the vanadium silicon-manganese alloy, the reasonable proportion of the vanadium slag raw material and aluminum is calculated according to the ratio of aluminum (particle size 1-50mm) 1.1 Matching and mixing operation, then gradually add 3000kg of prepared raw materials into 3t electric arc furnace for alloying operation. When the reduction temperature in the furnace is 1550 ~ 1950 ℃, the reduction re...

Embodiment 3

[0038] The embodiment of the present invention provides a vanadium-silicon-manganese alloy, the specific preparation method of which is as follows:

[0039] First, add 600kg of iron blocks to the 3t induction furnace to melt the vanadium slag together for pretreatment. The furnace is energized and kept at a constant temperature in the range of 1550-1650°C to make the vanadium slag V 2 o 5 The content of vanadium slag is 30wt%, and the vanadium slag raw material below 100mm is formed after crushing. Then, according to the composition requirements of vanadium silicon-manganese alloy, the reasonable proportion of vanadium slag raw material and aluminum is calculated according to the ratio of aluminum (particle size 1-50mm) 1.1, and mixed. After that, 5000kg of prepared raw materials will be gradually added into a 5t electric arc furnace for alloying operation. When the reduction temperature in the furnace is 1550-1950°C, the reduction reaction will be carried out at a constant te...

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PUM

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Abstract

The invention discloses a vanadium-silicon-manganese alloy and a method for producing the vanadium-silicon-manganese alloy by scrapped vanadium slag, and relates to the technical field of vanadium slag treatment. The method for producing the vanadium-silicon-manganese alloy by the scrapped vanadium slag comprises the following steps that the scrapped vanadium slag and iron are subjected to melt separation pretreatment to obtain melt-separated vanadium slag, and the content of V2O5 in the melt-separated vanadium slag is 10%-30% by weight; and according to the composition requirements of the vanadium-silicon-manganese alloy, the melt-separated vanadium slag is mixed according to an aluminum coefficient of 1.04-1.50, and then alloying reduction operation is performed to obtain the vanadium-silicon-manganese alloy with the vanadium content of 20%-30% by weight. The method for producing the vanadium-silicon-manganese alloy by the scrapped vanadium slag is simple in process and convenient tooperate, the alloying effect of the vanadium slag is remarkable and valuable elements in the vanadium slag are reasonably recovered, and at the same time, the alloying cost of the steelmaking production can be reduced and the quality of the vanadium-silicon-manganese alloy is ensured. In addition, the invention relates to the vanadium-silicon-manganese alloy prepared by the method for producing the vanadium-silicon-manganese alloy by the scrapped vanadium slag.

Description

technical field [0001] The invention relates to the technical field of vanadium slag treatment, and in particular to a vanadium-silicon-manganese alloy and a method for producing vanadium-silicon-manganese alloy from waste-free vanadium slag. Background technique [0002] Vanadium is an important alloying element. Vanadium-containing steel has excellent properties such as high strength, high toughness, and good wear resistance, so it is widely used in machinery, automobiles, shipbuilding, railways, aviation, bridges, electronic technology, and national defense. In industries such as industry, its consumption accounts for about 85% of vanadium consumption. In addition, about 10% of vanadium is used to produce titanium alloys required by the aerospace industry. Vanadium can be used as a stabilizer and strengthening agent in titanium alloys to make titanium The alloy has good ductility and plasticity, and vanadium can also be used as a catalyst and colorant in the chemical indu...

Claims

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Application Information

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IPC IPC(8): C22C30/00C22C38/04C22C38/12C22C38/02C22C33/04C22C1/02
CPCC22C30/00C22C1/02C22C33/04C22C38/02C22C38/04C22C38/12
Inventor 戈文荪龚洪君梁新腾曾建华
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP