A composite alloy that can replace vanadium-iron alloy and its production process and application

A composite alloy and vanadium slag technology, applied in the field of steelmaking, can solve the problems of inconsistent addition of vanadium slag, different particle size of vanadium slag, and increased difficulty in on-site operation, and achieves significant cost reduction, small equipment investment, and reduced cost. The effect of production costs

Active Publication Date: 2021-09-03
淄博淄翼金属材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the present inventors have found in actual production that the vanadium slag after crushing is directly subjected to vanadium alloying steelmaking, which has the following disadvantages: the vanadium slag after crushing is not sieved and selected, and belongs to rough processing products, and the vanadium content fluctuates greatly , the amount of vanadium slag added in each furnace steel smelting process is not uniform, which increases the difficulty of on-site operation; the particle size of vanadium slag is different, the impurity content is high, and the melting time is long after adding molten steel, so it is necessary to increase the argon blowing time for 1-2 minutes to promote uniform composition ; Due to the high impurity content of vanadium slag, the temperature drop of molten steel after adding to the ladle is large, which will inevitably increase the tapping temperature of the primary smelting furnace and increase the smelting cost

Method used

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  • A composite alloy that can replace vanadium-iron alloy and its production process and application
  • A composite alloy that can replace vanadium-iron alloy and its production process and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1 A composite alloy and its production process

[0034] The composite alloy includes the following raw materials and their mass percentages: 96.0Kg of vanadium slag, 2.0Kg of graphite, and 2.0Kg of organic binder; the particle size of the vanadium slag is 1.0mm; the mass percentage of each element in the vanadium slag is: vanadium 5.0% , carbon 0.2%, silicon 0.5%, phosphorus 0.05%, sulfur 0.05%, aluminum 5.0%, and the rest is iron. The particle size of the graphite is 1.0mm, and the mass percentages of the elements in the graphite are: carbon 98.5%, phosphorus 0.045%, sulfur 0.02%, and the balance is other components. The organic binder can be bisphenol A liquid epoxy resin.

[0035] The composite alloy production process comprises the steps of:

[0036] Collect vanadium slag and graphite waste materials, screen, test, and batch; the particle size of the vanadium slag is 1.0mm; the mass percentage of each element in the vanadium slag is: vanadium 5.0%, carbon ...

Embodiment 2

[0037] Example 2 A composite alloy and its production process

[0038]The composite alloy includes the following raw materials and their mass percentages: 93.0Kg of vanadium slag, 3.0Kg of graphite, and 4.0 Kg of organic binder; the particle size of the vanadium slag is 5.0mm; the mass percentage of each element in the vanadium slag is: vanadium 2.5% , carbon 0.1%, silicon 0.2%, phosphorus 0.02%, sulfur 0.02%, aluminum 2.0%, and the rest is iron. The particle size of graphite is 5.0mm, and the mass percentage of each element in the graphite is: carbon 99.5%, phosphorus 0.025%, sulfur 0.01%, and the balance is other components. The organic binder can be bisphenol A liquid epoxy resin.

[0039] The composite alloy production process comprises the steps of:

[0040] Collect vanadium slag and graphite waste materials, screen, test, and batch; the particle size of the vanadium slag is 5.0mm; the mass percentage of each element in the vanadium slag is: vanadium 2.5%, carbon 0.1%, ...

Embodiment 3

[0041] Example 3 A composite alloy and its production process

[0042] The composite alloy includes the following raw materials and their mass percentages: 95Kg of vanadium slag, 2.0Kg of graphite, 3.0Kg of organic binder; the particle size of the vanadium slag is 3mm; the mass percentage of each element in the vanadium slag is: 2.8% of vanadium, carbon 0.15%, silicon 0.5%, phosphorus 0.035%, sulfur 0.03%, aluminum 2.0, and the rest is iron. The particle size of the graphite is 2.0mm, and the mass percentages of the elements in the graphite are: carbon 99%, phosphorus 0.035%, sulfur 0.02%. The organic binder can be bisphenol A liquid epoxy resin.

[0043] The composite alloy production process comprises the steps of:

[0044] Collect vanadium slag and graphite waste materials, screen, test, and batch; the particle size of the vanadium slag is 3.0mm; the mass percentage of each element in the vanadium slag is: vanadium 2.8%, carbon 0.15%, silicon 0.5%, phosphorus 0.035%, sulf...

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Abstract

The invention belongs to the technical field of steelmaking and relates to the application of vanadium slag in replacing vanadium-iron alloy, in particular to a composite alloy which can replace vanadium-iron alloy and its production process and application. The composite alloy includes the following raw materials and their mass percentages: 93.0-96.0% of vanadium slag, 2.0-3.0% of graphite, and 2.0-4.0% of organic binder; the production process includes the following steps: collecting vanadium slag and graphite waste materials, Screening, testing, and batching; heating vanadium slag, graphite, and organic binder materials separately, mixing and stirring, briquetting, drying, and packaging; collection of vanadium and carbon elements during the pelletizing process of vanadium slag and carbon graphite The yield can reach 99%. The application of the composite alloy of the invention in steelmaking instead of vanadium ferroalloy. By adopting the composite alloy of the present invention to carry out vanadium alloying on molten steel during the tapping process of the converter, the recovery rate of alloy elements is high, and the recovery rate of vanadium can reach 93-96%.

Description

technical field [0001] The invention belongs to the technical field of steelmaking and relates to the application of vanadium slag in replacing vanadium-iron alloy, in particular to a composite alloy which can replace vanadium-iron alloy and its production process and application. Background technique [0002] Vanadium has an important application in steel smelting, mainly because vanadium steel has good casting performance; low soaking temperature can be used for vanadium steel, so as to make full use of energy; vanadium steel has low rolling load and high production yield; vanadium steel It has wear resistance and good toughness in welding heat-affected zone. [0003] The iron and steel industry has a large demand for vanadium ferroalloy, but vanadium ferroalloy is expensive, which greatly increases the production cost of vanadium steel. In addition, the vanadium content of ferro-vanadium alloys is generally about 50%, but the target content of vanadium components in some...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/242C22C33/04C21C5/28
CPCC21C5/28C22B1/2406C22B1/242C22C33/04Y02P10/20
Inventor 张玉明
Owner 淄博淄翼金属材料有限公司
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