CN102994851A

CN102994851A - Low-carbon ferrochromium

Info

Publication number: CN102994851A
Application number: CN2012104198510A
Authority: CN
Inventors: 蔡德丰; 蔡卫红
Original assignee: HAIMEN JINYI WELDING MATERIALS CO Ltd
Current assignee: HAIMEN JINYI WELDING MATERIALS CO Ltd
Priority date: 2012-10-29
Filing date: 2012-10-29
Publication date: 2013-03-27

Abstract

The invention relates to low-carbon ferrochromium. The low-carbon ferrochromium is characterized by comprising the following ingredients in percentage by weight: 70 to 76 percent of chromium, 0.01 to 0.08 percent of carbon, 0.1 to 0.8 percent of silicon, 0.001 to 0.008 percent of sulfur, 0.01 to 0.03 percent of fluorine and 10 to 20 percent of iron. The low-carbon ferrochromium has the advantages of low carbon content, high chromium content, high economic value, high use value and high economic efficiency.

Description

Low carbon ferrochromium

Technical field

The present invention relates to a kind of low carbon ferrochromium.

Background technology

Low-carbon ferrochromium alloy is the important source material of smelting special steel and Ultra-low carbon structural alloy steel, its carbon content is lower and chromium content is higher, its economic worth and use value are just higher, the method of smelting low carbon ferrochrome is mainly three-step approach and Bo Lunfa at present, shortcoming as these two class methods is that operation is long, power consumption is high, and the chromium loss is large, time-consuming, bothersome, take material.Therefore, for addressing the above problem, the spy provides a kind of new technical scheme to satisfy people's demand.

Summary of the invention

The purpose of this invention is to provide a kind of low carbon ferrochromium.

The technical solution used in the present invention is:

Low carbon ferrochromium, this low carbon ferrochromium composition is by weight percentage:

Chromium 70-76%;

Carbon 0.01-0.08%;

Silicon 0.1-0.8%;

Sulphur 0.001-0.008%;

Fluorine 0.01-0.03%;

Iron 10-20%.

Chromium in the described low carbon ferrochromium composition was the chromium powder of 30-50 mesh sieve.

Carbon in the described low carbon ferrochromium composition was the carbon dust of 90-110 mesh sieve.

Silicon in the described low carbon ferrochromium composition was the silica flour of 90-110 mesh sieve.

Sulphur in the described low carbon ferrochromium composition was the sulphur powder of 300-350 mesh sieve.

Fluorine in the described low carbon ferrochromium composition was the fluorine powder of 300-350 mesh sieve.

Iron in the described low carbon ferrochromium composition was the iron powder of 280-320 mesh sieve.

Advantage of the present invention is: the carbonaceous component in the low carbon ferrochromium is low, and the composition of chromium is high, and economic worth and use value are high, have improved economical efficiency.

Embodiment

Embodiment 1

Chromium 70%;

Carbon 0.01%;

Silicon 0.1%;

Sulphur 0.001%;

Fluorine 0.01%;

Iron 20%.

Chromium in the low carbon ferrochromium composition was the chromium powder of 30 mesh sieves, carbon in the low carbon ferrochromium composition was the carbon dust of 90 mesh sieves, silicon in the low carbon ferrochromium composition was the silica flour of 90 mesh sieves, sulphur in the low carbon ferrochromium composition was the sulphur powder of 300 mesh sieves, fluorine in the low carbon ferrochromium composition was the fluorine powder of 300 mesh sieves, and the iron in the low carbon ferrochromium composition was the iron powder of 280 mesh sieves.

Embodiment 2

Chromium 73%;

Carbon 0.04%;

Silicon 0. 4%;

Sulphur 0.004%;

Fluorine 0.015%;

Iron 15%.

Chromium in the low carbon ferrochromium composition was the chromium powder of 40 mesh sieves, carbon in the low carbon ferrochromium composition was the carbon dust of 100 mesh sieves, silicon in the low carbon ferrochromium composition was the silica flour of 100 mesh sieves, sulphur in the low carbon ferrochromium composition was the sulphur powder of 325 mesh sieves, fluorine in the low carbon ferrochromium composition was the fluorine powder of 325 mesh sieves, and the iron in the low carbon ferrochromium composition was the iron powder of 300 mesh sieves.

Embodiment 3

Chromium 76%;

Carbon 0.08%;

Silicon 0.8%;

Sulphur 0.008%;

Fluorine 0.03%;

Iron 20%.

Chromium in the low carbon ferrochromium composition was the chromium powder of 50 mesh sieves, carbon in the low carbon ferrochromium composition was the carbon dust of 110 mesh sieves, silicon in the low carbon ferrochromium composition was the silica flour of 110 mesh sieves, sulphur in the low carbon ferrochromium composition was the sulphur powder of 350 mesh sieves, fluorine in the low carbon ferrochromium composition was the fluorine powder of 350 mesh sieves, and the iron in the low carbon ferrochromium composition was the iron powder of 320 mesh sieves.

Carbonaceous component in the low carbon ferrochromium is low, and the composition of chromium is high, and economic worth and use value are high, have improved economical efficiency.

Claims

1. low carbon ferrochromium, it is characterized in that: this low carbon ferrochromium composition is by weight percentage:

Chromium 70-76%;

Carbon 0.01-0.08%;

Silicon 0.1-0.8%;

Sulphur 0.001-0.008%;

Fluorine 0.01-0.03%;

Iron 10-20%.

2. low carbon ferrochromium according to claim 1, it is characterized in that: the chromium in the described low carbon ferrochromium composition was the chromium powder of 30-50 mesh sieve.

3. low carbon ferrochromium according to claim 1, it is characterized in that: the carbon in the described low carbon ferrochromium composition was the carbon dust of 90-110 mesh sieve.

4. low carbon ferrochromium according to claim 1, it is characterized in that: the silicon in the described low carbon ferrochromium composition was the silica flour of 90-110 mesh sieve.

5. low carbon ferrochromium according to claim 1, it is characterized in that: the sulphur in the described low carbon ferrochromium composition was the sulphur powder of 300-350 mesh sieve.

6. low carbon ferrochromium according to claim 1, it is characterized in that: the fluorine in the described low carbon ferrochromium composition was the fluorine powder of 300-350 mesh sieve.

7. low carbon ferrochromium according to claim 1, it is characterized in that: the iron in the described low carbon ferrochromium composition was the iron powder of 280-320 mesh sieve.