Iron alloy additive containing low titanium and phosphorus and use method of iron alloy additive

A low-titanium ferrophosphorus and additive technology, applied in the field of ferroalloy production, can solve the problems of high cost, large fluctuations in phosphorus content, high impurity content, etc., and achieve the effect of moderate particle size and rich element content

Inactive Publication Date: 2015-04-29
徐广哲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are two ways to produce ferrophosphorus: one is to produce ferrophosphorus mainly, and phosphorus is a by-product; the other is to produce yellow phosphorus mainly, and ferrophosphorus is a byproduct. Most of the foreign countries produce in this way, so The capacity of the electric furnace used is 10,000KV·A, and most of the ferrophosphorus in my country has been produce...

Method used

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  • Iron alloy additive containing low titanium and phosphorus and use method of iron alloy additive
  • Iron alloy additive containing low titanium and phosphorus and use method of iron alloy additive
  • Iron alloy additive containing low titanium and phosphorus and use method of iron alloy additive

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Embodiment 1

[0035] The preparation method of low-titanium phosphorus ferroalloy additive of the present invention:

[0036] (1) Selection of raw materials:

[0037] Phosphate rock: phosphorus pentoxide ≥ 22%

[0038] Coke: carbon ≥ 70%

[0039] Dolomite: calcium oxide ≥ 20%

[0040] Silica: silicon dioxide ≥ 90%

[0041] Serpentine: Magnesium oxide ≥ 31%

[0042] (2) The above-mentioned raw materials are put into a blast furnace of 50 cubic meters or 100 cubic meters in proportion, melted at a high temperature of 1550°C and undergo a chemical reduction reaction, and the molten material of the reaction product is discharged from the slag port of the blast furnace;

[0043] (3) Spray the melt flow with a water flow of 0.5MPa to break it into fine particles, and the product phosphorus

[0044] Due to its high specific gravity, ferroalloys are precipitated at the bottom of the blast furnace.

Embodiment 2

[0046] A kind of low-titanium phosphorus iron alloy additive, its component content is as follows:

[0047]

Embodiment 3

[0049] A kind of low-titanium phosphorus iron alloy additive, its component content is as follows:

[0050]

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Abstract

The invention discloses an iron alloy additive containing low titanium and phosphorus and a preparation method of the iron alloy additive. The iron alloy additive is specially designed for production of high-grade non-oriented and oriented silicon steel. The special iron alloy additive containing low titanium and phosphorus comprises 21%-25% of P, 0-0.08% of Cr, 0-3.0% of Si, 0-0.8% of C, 0-0.04% of S, 0-2.0% of Mn, 0-0.05% of Ti, 0-0.2% of V, 0-0.2% of Nb and 0-5% of screen underflow. The iron alloy additive containing low titanium and phosphorus has the characteristics of rich elements, lower content and moderate granularity, the impurity content in the steelmaking process can be effectively controlled, and particularly, the iron alloy additive has important function on enhancing steel strength and hardness during high-grade silicon steel production.

Description

technical field [0001] The invention belongs to the technical field of ferroalloy production, and in particular relates to a low-titanium phosphorus ferroalloy additive used in the smelting and reduction process of special steel and its application method. Background technique [0002] Silicon steel is known as the "handicraft" in steel products. It has the characteristics of small iron loss, low coercive force, high magnetic permeability and magnetic induction, and is widely used in electronic power industry and military industry. Silicon steel sheet is divided into oriented silicon steel and non-oriented silicon steel. In terms of chemical composition control, the methods are different. Oriented silicon steel has extremely strict requirements on the content of conventional elements, and at the same time, it is necessary to strictly control the beneficial inclusion elements added to obtain grain orientation. High, directional high magnetic induction, low iron loss grain-ori...

Claims

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Application Information

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IPC IPC(8): C22C38/00C22C38/02C22C38/04C22C38/12C22C38/14C22C38/18C22C38/24C22C38/26C22C38/28C22C38/34C22C38/38C21C7/00C21C7/06
Inventor 徐广哲
Owner 徐广哲
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