Unlock instant, AI-driven research and patent intelligence for your innovation.

High-purity ferrosilicon powder and preparing method thereof

A ferrosilicon powder and high-purity technology, which is applied in the field of high-purity ferrosilicon powder and its preparation, achieves the effect of simple preparation method and improved economic benefits

Inactive Publication Date: 2017-08-04
CHANGZHOU RUNDA FERROALLOY
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation method of high-purity ferrosilicon powder in the prior art is still seldom reported

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A preparation method of high-purity ferrosilicon powder, the preparation method has the following steps:

[0015] (1) Prepare silica ore powder, iron material, refining agent and carbon reducing agent according to the mass ratio of 300:36:90:150; the iron material is iron scale; the refining agent is quartz sand, industrial alkali, fluorite powder and A mixture of iron ore concentrates; the carbon reducing agent is petroleum coke;

[0016] (2) Mix the above three materials of silica ore powder, iron material and carbon reducing agent evenly and send them into the electric arc furnace to heat to 2000°C. When the temperature of the electric arc furnace is higher than 2000°C, add refining agent to the electric arc furnace to remove Slag, after the slag overflows, first blow air to the discharge port for 10 minutes, and then blow oxygen twice for 10 minutes each, remove Al, Ca, Ti and other components in ferrosilicon by blowing oxygen, and then inject the discharge material...

Embodiment 2

[0019] A preparation method of high-purity ferrosilicon powder, the preparation method has the following steps:

[0020] (1) Prepare silica ore powder, iron material, refining agent and carbon reducing agent according to the mass ratio of 285:30:85:140; the iron material is steel shavings; the rest of the steps are the same as in Example 1.

Embodiment 3

[0022] A preparation method of high-purity ferrosilicon powder, the preparation method has the following steps:

[0023] (1) Prepare silica ore powder, iron material, refining agent and carbon reducing agent according to the mass ratio of 295:33:88:145; the iron material is iron scale; the rest of the steps are the same as in Example 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to high-purity ferrosilicon powder and a preparing method thereof. The ferrosilicon powder comprises the following components in content: larger than 72% and smaller than or equal to 80% of Si, smaller than or equal to 0.05% of Al, smaller than or equal to 0.05% of Ti, smaller than or equal to 0.05% of Ca, smaller than or equal to 0.05% of Mn, smaller than or equal to 0.05% of Cr, smaller than or equal to 0.04% of P, smaller than or equal to 0.02% of S, smaller than or equal to 0.02% of C, smaller than or equal to 0.8% of H2O and the balance iron. According to the preparing method, a high-purity ferrosilicon powder finished product is obtained by selecting raw materials including silicon dioxide ore powder, iron powder, a refining agent and a carbon reducing agent, reasonably mixing the silicon dioxide ore powder, the iron powder, the refining agent and the carbon reducing agent, carrying out natural cooling after high-temperature chemical reaction and carrying out discharging, crushing and sieving. The high-purity ferrosilicon powder finished product can be used for de-oxidation during the production of high-end steel, such as steel cords, clean steel, non-oriented silicon steel, high-density plates and alloy steel. The preparing method is easy to industrialize. The obtained high-purity ferrosilicon powder is high in Si content, low in the content of each of Al, Ca, Ti, Mn, Cr, P, S and C and suitable for further popularization and application.

Description

technical field [0001] The invention relates to the technical field of formulation design and preparation of ferrosilicon powder, and more specifically relates to a high-purity ferrosilicon powder and a preparation method thereof. Background technique [0002] Ferrosilicon powder is a ferroalloy composed of iron and silicon. It is a powdery substance made by grinding. It is used as a deoxidizer for steelmaking and ironmaking, and can also be used as a raw material for hydrogen production. Traditional ordinary ferrosilicon powder (national standard regulations Al ≤ 1.5%, Ca ≤ 1.5%, Ti ≥ 0.06%) can only be used to produce ordinary steel, and the production of special high-end steel requires Al, Ca, Ti and other elements in ferrosilicon powder to be 0.05%, 0.05%, 0.03 % or less, the particle size is also extremely demanding, and the use of ordinary ferrosilicon powder for high-demand steel grades will affect the quality of high-end steel due to high trace elements. Therefore, t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/06C21C1/04
CPCC21C7/06C21C1/04C21C7/0037
Inventor 吴洪卫陆元海牟春方
Owner CHANGZHOU RUNDA FERROALLOY