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A kind of production method of low-titanium phosphorus ferroalloy

A production method and ferroalloy technology, which is applied in the production field of high-purity phosphorus ferroalloy, can solve the problems of high labor intensity of manual slag removal, power consumption, ammonia pollution, etc., and achieve the effect of excellent product quality, saving production cost, and loose raw material quality requirements

Active Publication Date: 2022-03-18
湖南创大钒钨有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Similarly, the use of medium frequency induction melting also requires power consumption and high cost
In addition, manual slag removal is labor-intensive, and blowing nitrogen and ammonia pollutes the environment

Method used

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  • A kind of production method of low-titanium phosphorus ferroalloy
  • A kind of production method of low-titanium phosphorus ferroalloy
  • A kind of production method of low-titanium phosphorus ferroalloy

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Effect test

Embodiment 1

[0038] A self-made silicon blown self-melting furnace (the inner diameter of the furnace hall is 4.8 meters, the height is 5 meters, and the depth of the furnace pool is 1 meter) is used as the smelting furnace. The ferrophosphorus raw material is broken into particles with a diameter of 1-80 mm. The ferrophosphorus raw material: a non-standard yellow phosphorus by-product ferrophosphorus including high-titanium ferrophosphorus is used as a raw material, and the P content of the element composition is 24.35wt% and The content of Fe is 74wt%, and the contents of other impurity elements are shown in Table 1, which are respectively between 0.5-4wt%. According to the highest value of impurity elements, 4% of the total amount of ferrophosphorus raw material is added as bentonite slag-type catalyst and impurity element adsorbent to obtain the mixture. Add firewood and coke to the smelting furnace to ignite, and blow air from small to large to preheat the furnace. When the temperatur...

Embodiment 2

[0041] A self-made silicon blown self-melting furnace (the inner diameter of the furnace hall is 4.8 meters, the height is 5 meters, and the depth of the furnace pool is 1 meter) is used as the smelting furnace. Crushing ferrophosphorus raw materials into particles with a diameter of 1-80 mm, and batching: non-standard (high titanium) ferrophosphorus 55-70wt%, phosphate rock 20-30wt%, phosphorus-containing waste residue 10-25wt%; The post-element composition P content is 24.9wt%, Fe content is 74.5wt%, and other impurity elements are shown in Table 1, the lowest is 0.5wt%, and the highest content is 7wt%. In addition, bentonite slag-type catalytic and impurity element adsorbents with a total amount of 7 wt% of ferrophosphorus raw materials are added. After mixing the ferrophosphorus raw material and bentonite, a mixed material is obtained. Connect to the first furnace, reserve one-third of the liquid body at the bottom of the furnace, and evenly introduce the ferrophosphorus ...

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Abstract

The invention relates to a production method of a low-titanium ferrophosphorus alloy, which comprises crushing ferrophosphorus raw materials to obtain granular materials with a particle size of 1-80mm; mixing bentonite into the granular materials to obtain a mixture; Fill the pool with the first batch of mixture when the furnace is put into the furnace, and ignite it so that the loaded mixture is converted into a melt, and then stop the ignition; blow air into the melt in the melt, and at the same time, continuously and evenly inject air into the molten pool Add the mixture until the melt depth is 80-95% of the total depth of the molten pool; continue blowing air into the melt for 10-30 minutes, draw out part of the melt, cast ingots, and obtain high-purity and high-quality phosphorus-iron alloy. The invention does not need electric energy and external energy fuel, and can realize wind energy self-melting of solid ferro-phosphorus charge to smelt high-purity ferro-phosphorus alloy, and the quality of the obtained ferro-phosphorus alloy is obviously better than the existing standard or technology.

Description

technical field [0001] The invention relates to a production method of phosphorus-iron alloy, in particular to a production method of high-purity (low titanium) phosphorus-iron alloy. Background technique [0002] In general, phosphorus is a harmful element in steel products, causing cold brittleness. However, adding an appropriate amount of phosphorus to some special steel products can improve the unique properties of steel. Phosphorus is widely used in rolls, internal combustion engine cylinder liners, engine rollers and large castings in the form of phosphorus-iron alloys to increase the corrosion resistance and wear resistance of mechanical parts. [0003] Ferrophosphorus alloy (hereinafter referred to as "ferrophosphorus") is used as an additive for smelting special steel, which can remove gas in special steel, selectively oxidize, decarburize, remove non-metallic inclusions, refine grains, and improve electromagnetic induction. With the development of modern industry...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C35/00C22C33/06
CPCC22C35/005C22C33/06
Inventor 阳云徕胡玉贵
Owner 湖南创大钒钨有限公司