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A method for smelting reduction production and quenching and tempering treatment of titanium-containing mixed slag

A quenching and tempering treatment and slag technology, which is applied in the field of smelting reduction production and quenching and tempering treatment of titanium-containing mixed slag, can solve the problems of low production cost, high metal recovery rate, short reaction time, etc., and achieve the effect of efficient recovery

Active Publication Date: 2018-08-28
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of the invention has short reaction time, high metal recovery rate, low production cost, strong raw material adaptability, large processing capacity, environmental friendliness, high economic benefits, and can effectively solve the problem of efficient recovery and utilization of metallurgical resources and heat energy in multi-metal composite mines

Method used

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  • A method for smelting reduction production and quenching and tempering treatment of titanium-containing mixed slag

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Effect test

Embodiment 1

[0147] A method for smelting reduction production and quenching and tempering treatment of titanium-containing mixed slag, specifically comprising the following steps:

[0148] Step 1, smelting reduction:

[0149] (1) Material mixing and melting:

[0150] The liquid molten titanium-containing blast furnace slag and converter vanadium-titanium molten steel slag flowing out of the slag outlet are added to the thermal insulation pit whose inner layer is graphite-dolomite composite thermal insulation refractory material to form titanium-containing mixed slag, which is added to the titanium-containing mixed molten slag. Coal powder, vanadium-containing titanium steel slag and ordinary iron concentrate metallized pellets are added to the slag to form a mixed slag. The temperature is raised to 1500°C, and the mixed slag is heated to a molten state for smelting reduction, and the two parameters (a) and (b) are guaranteed at the same time through regulation:

[0151] (a) The temperat...

Embodiment 2

[0172] A method for smelting reduction production and quenching and tempering treatment of titanium-containing mixed slag, specifically comprising the following steps:

[0173] Step 1, smelting reduction:

[0174] (1) Material mixing and melting:

[0175] The liquid molten titanium-containing blast furnace slag and converter vanadium-titanium molten steel slag flowing out of the slag outlet are added to the pourable thermal insulation slag tank of graphite-silicon composite thermal insulation refractory material to form titanium-containing mixed slag, and the titanium-containing mixed slag Add coke powder and fluorite to form a mixed slag. The temperature of the mixed slag is 1410°C when mixing. Use a refractory spray gun to insert the slag and blow into the coal powder, and add vanadium-containing titanium molten steel slag to increase the temperature of the mixed slag. To 1480°C, the mixed slag is heated to a molten state for smelting reduction, and the two parameters (a) a...

Embodiment 3

[0199] A method for smelting reduction production and quenching and tempering treatment of titanium-containing mixed slag, specifically comprising the following steps:

[0200] Step 1, smelting reduction:

[0201] (1) Material mixing and melting:

[0202] Add the liquid molten titanium-containing blast furnace slag and converter vanadium-titanium molten steel slag flowing out of the slag outlet into the converter whose inner layer is pitch-magnesium composite thermal insulation refractory material to form titanium-containing mixed slag, and add titanium-containing mixed slag Bituminous coal, ordinary iron concentrate, and ordinary iron concentrate directly reduce iron to form a mixed slag. The temperature of the mixed slag is 1460°C when mixing, and the refractory spray gun is inserted into the slag and blown into coal powder, and the mixed slag is heated to 1500°C , the mixed slag is heated to a molten state for smelting reduction, and the two parameters (a) and (b) are guar...

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Abstract

A method for smelting reduction production and quenching and tempering of titanium-containing mixed slag: 1) Add reducing agent, vanadium-containing titanium minerals and / or iron-containing materials to titanium-containing mixed slag, and heat to a set temperature to make the mixed slag In the molten state, oxidizing gas is blown to carry out melting reduction and oxidation; during the process, the temperature range of the mixed slag and the alkalinity CaO / SiO2 ratio range are controlled; 2) Separation and recovery are carried out according to different reaction devices. The invention realizes efficient recovery of titanium components, iron components, vanadium components, phosphorus components and free calcium oxide components in mixed slag, and utilizes the smelting reduction ironmaking process to process solid vanadium, titanium and iron-containing materials on a large scale and produce High-grade titanium slag and vanadium-rich slag are used to simultaneously realize slag conditioning and efficient comprehensive utilization of resources. It is a new smelting reduction ironmaking process; the invention has short reaction time, high metal recovery rate, low production cost, and adaptable raw materials. It has strong performance, large processing capacity, and effectively solves the problem of efficient recovery and utilization of metallurgical resources and heat energy of polymetallic composite ores.

Description

technical field [0001] The invention belongs to the field of non-blast furnace ironmaking and resource comprehensive utilization, and specifically relates to a method for smelting reduction production and quenching and tempering treatment of titanium-containing mixed slag. Background technique [0002] In today's world, the production of blast furnace ironmaking is developing unprecedentedly, the scale of blast furnace is expanding continuously, the production consumption of blast furnace is decreasing, and the cost is lowered. It is still the main force of steel production. Production encountered huge challenges, the details are as follows: [0003] (1) Blast furnace has a long production process from raw material pretreatment, pelletizing plant, sintering plant, coking plant, and blast furnace ironmaking, and the total investment is very huge; [0004] (2) Strong dependence on metallurgical coke. With the increasingly scarce coking coal resources, the price of metallurgi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B3/06C21B11/00C22B7/04C22B34/12C22B34/22
CPCC21B3/06C21B11/00C22B7/001C22B7/04C22B34/1222C22B34/1227C22B34/22Y02P10/20Y02W30/50
Inventor 张力张武
Owner NORTHEASTERN UNIV LIAONING
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