Melting and separating furnace reduction system and method for schreyerite

A technology of melting furnace and vanadium-titanium ore, which is applied in the field of melting furnace reduction system of vanadium-titanium ore, can solve problems such as complex structure, and achieve the effect of meeting the conditions of high-temperature reduction

Pending Publication Date: 2016-11-09
SHENWU TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The disadvantages of the second prior art are: the fluidized bed needs four stages of reduction, and the structure is complex; before entering the melting furnace, it is necessary to form hot-pressed balls from briquettes and then enter the melting furnace

Method used

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  • Melting and separating furnace reduction system and method for schreyerite
  • Melting and separating furnace reduction system and method for schreyerite
  • Melting and separating furnace reduction system and method for schreyerite

Examples

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Embodiment

[0052] Mineral powder and a small amount of flux lime powder are put into the raw material hopper 1, and are fed into the direct reduction shaft furnace 4 through the speed-regulating feeder 2 at the lower part of the raw material hopper 1. The mineral powder falls on the inclined baffle plate 5 and slides down gradually. The high-temperature CO gas coming out of the melting furnace 9 enters the direct reduction shaft furnace 4 through the high-temperature flue gas pipeline 6 . The high-temperature CO gas reacts with the ore powder, and the ore powder generates direct reduced iron powder, and the iron powder enters the melting furnace 9 through the feeding port 7 . Oxygen coal gun 8 burns in the furnace to provide heat and the temperature needed for reaction. After the reaction is completed, the ore liquid and slag are intermittently discharged through the taphole 10. The reacted gas in the shaft furnace is discharged through the exhaust pipe 3 and enters the next processing ...

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Abstract

The invention relates to a melting and separating furnace reduction system and method for schreyerite. The system comprises a reduction vertical furnace, a melting and separating furnace and an oxygen coal lance. The reduction vertical furnace comprises ore powder, a solvent feeding port, a discharging port and a smoke inlet. A baffle with the inclination angle capable of being adjusted is arranged in a hearth of the reduction vertical furnace, and the baffle and a supported rotating shaft are of a hollow structure. The melting and separating furnace comprises a feeding port, a smoke outlet and a discharging port, wherein the feeding port communicates with the discharging port of the reduction vertical furnace, and the smoke outlet communicates with the smoke inlet of the reduction vertical furnace. A spray lance head of the oxygen coal lance is arranged in the smelting and separating furnace. The oxygen coal lance stretches into the smelting and separating furnace from the furnace top of the smelting and separating furnace. According to the melting and separating furnace reduction system and method for the schreyerite, due to the fact that the baffle with the inclination angle capable of being adjusted is arranged in the reduction vertical furnace, the falling speed of and the staying time of the ore powder can be controlled, and the reduction effect of the ore powder is ensured.

Description

technical field [0001] The present invention generally relates to a melting furnace reduction system and method, in particular to a melting furnace reduction system and method for vanadium-titanium ore. Background technique [0002] Non-blast furnace ironmaking is a direction of steel development, the main purpose is to achieve low-cost smelting and utilization of refractory ore, and also to achieve clean production. In recent years, coal-based smelting reduction and direct reduction + electric furnace melting technology and coal-based direct reduction + gas furnace melting technology have gradually developed into one of the ironmaking process technologies. This process has the advantages of using coal instead of coke, high reduction temperature, and smelting time Short, low energy consumption, low environmental pollution and low investment, etc., are in line with the development status of resources and energy in my country, and have become one of the hot research topics in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B13/14
CPCC21B13/14C21B13/0006C21B13/0066
Inventor 马政峰陈峨薛逊吴道洪
Owner SHENWU TECH GRP CO LTD
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