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Method for producing rare earth-containing niobium alloy with blast furnace waste slag after smelting from Baiyunebo mine

A technology of blast furnace waste slag and niobium alloy, which is applied in the field of metallurgy, can solve the problems of limited and unreasonable slag consumption, and achieve the effect of material safety

Inactive Publication Date: 2007-11-07
BAOTOU CITY LIUHE SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 2006, Baotou Steel Hengzhiyuan Company passed the appraisal to make a series of wall and floor tiles with Baotou Steel blast furnace slag 1 / 3 + fly ash + steel slag. However, the rare earth and niobium resources in Baotou Steel blast furnace slag are used in bricks It doesn't work, it's not reasonable, and because Baotou Steel's blast furnace slag contains thorium, and this element has radiation, the amount of slag used is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Take 60kg of Baotou Iron and Steel blast furnace slag, 10kg of barite, 10kg of lapis lazuli, 30kg of quartz stone, and 22kg of blue carbon, crush them to less than 0.5mm, and make balls of 25-40cm 3 , dried, mixed with 15kg of steel shavings and 15kg of fluorite, and placed in a submerged arc furnace, controlled at 1800°C to 1900°C for 2-3 hours to smelt, tap molten iron, remove slag, pour, and smelt the alloy The main chemical composition by weight percent is: Si42%, Ba8.8%, Sr6.1%, Re 4.1%, Nb0.05%, Fe37%, C<0.4%, S<0.06%, P<0.05% .

Embodiment 2

[0016] Take 50kg of Baotou Iron and Steel blast furnace slag, 2kg of barite, 2kg of lapis lazuli, 30kg of quartz stone, and 16kg of blue carbon, crush it to less than 0.5mm, and make balls of 25-40cm 3 , dried, mixed with 10kg of steel shavings and 10kg of fluorite, and put it in a submerged arc furnace, control the temperature of the furnace at 1800°C to 1900°C for 2-3 hours, tap molten iron, remove slag, pour, and smelt the alloy The main chemical components are: Si 49%, Ba 3.8%, Sr 2.1%, Re 4.7%, Nb 0.05%, Fe 38%, C<0.4%, S<0.06%, P<0.05%.

Embodiment 3

[0018] Take 70kg of Baotou steel blast furnace slag, 15kg of barite, 20kg of lapis lazuli, 50kg of quartz stone, and 28kg of blue carbon, crush it to less than 0.5mm, and make balls of 25-40cm 3 , dried, mixed with 15kg of steel shavings and 25kg of fluorite, and put it in a submerged arc furnace, control the temperature of the furnace at 1800°C to 1900°C for 2-3 hours, tap molten iron, remove slag, pour, and smelt the alloy The main chemical composition by weight percent is: Si51%, Ba 9.5%, Sr 8.3%, Re 2.9%, Nb 0.048%, Fe 27%, C<0.5%, S<0.06%, P<0.005%.

[0019] The above alloy is used for inoculation treatment of casting, and the addition amount is 2-6kg / t iron, which can promote graphitization, reduce whitening tendency, improve graphite shape and distribution, increase the number of eutectic clusters, refine matrix structure and reduce segregation. Due to the presence of rare earth and niobium, it has strong anti-recession ability and can significantly improve the mechanic...

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PUM

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Abstract

The present invention relates to metallurgical technology, and is especially process of producing alloy containing RE and Nb with blast furnace slag from smelted baiyuneboite. The present invention produces alloy containing RE and Nb with the materials including the blast furnace slag from smelted baiyuneboite, barite, celestite, dolomite, limestone, steel scrap, quartz stone, etc and through smelting in furnace. The present invention provides technological process of utilizing the RE and Nb resource in the blast furnace slag to produce valuable alloy.

Description

(1) Technical field [0001] The invention relates to a method for producing an alloy containing rare earth and niobium by using blast furnace waste slag after smelting in Baiyun Obo Mine, and belongs to the field of metallurgy. (2) Background technology [0002] The mineral structure of blast furnace waste slag includes calcium aluminate feldspar, calcium magnesium feldspar, yellow green stone, fluorite and vitreous body. The Baiyan Obo Mine is a compound ore mainly composed of iron elements. Because of its unique composition, it determines the uniqueness of the composition of the blast furnace waste slag after smelting. At present, Baiyan Obo Mine is exclusively used for ironmaking by Baotou Steel, so the blast furnace waste slag smelted by Baiyan Obo Mine can also be called Baotou Steel Blast Furnace Slag. [0003] oxidation thing CaO SiO 2 Al 2 o 3 MgO Rex Oy Nb 2 o 5 ...

Claims

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Application Information

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IPC IPC(8): C22C33/04C22C1/02C22C38/02C22C30/00C22B7/04C22B1/24
CPCY02P10/20
Inventor 吴赞贤杜晓明薛建刚王永生
Owner BAOTOU CITY LIUHE SCI & TECH DEV
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