Blast furnace steelmaking continuous casting and rolling stainless steel round bar production system and production process

A technology of steelmaking and continuous casting and production system, which is applied to furnaces, furnace types, heat treatment furnaces, etc., can solve the problems of high cost and high energy consumption, and achieve the effects of simple production process, low energy consumption and compact structure

Active Publication Date: 2018-01-16
FUJIAN QINGTUO NICKEL IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the temperature of the steel billet transported to the round steel processing plant has usually dropped to normal temperature, and the steel billet is heated from room temperature to thousands of degrees, which consumes a lot of energy and costs a lot. Therefore, a new stainless steel round steel production system is needed. and production process

Method used

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  • Blast furnace steelmaking continuous casting and rolling stainless steel round bar production system and production process
  • Blast furnace steelmaking continuous casting and rolling stainless steel round bar production system and production process

Examples

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Effect test

Embodiment 1

[0030] A blast furnace steelmaking continuous casting and rolling stainless steel round bar production process comprises a blast furnace steelmaking continuous casting and rolling stainless steel round bar production system, comprising the following steps:

[0031] 1) Add anthracite, sintered nickel ore and coke into the blast furnace, the mass ratio is 6% of anthracite, 63% of sintered nickel ore, and 37% of coke, and feed rich oxygen into the blast furnace to smelt the additives into molten nickel iron, at the same time The tapping temperature of blast furnace is 1400℃;

[0032] 2) The molten nickel iron melted in step (1) is transported into the AOD furnace through the first ladle tank, and lime, ferrosilicon, fluorite, high-carbon ferrochromium, electrolytic manganese and ferronickel are added to the AOD furnace, and the mass distribution is The ratio is 6% lime, 1% ferrosilicon, 1% fluorite, 20% high-carbon ferrochrome, 1% electrolytic manganese, and 70% ferronickel. At t...

Embodiment 2

[0037] A blast furnace steelmaking continuous casting and rolling stainless steel round bar production process comprises a blast furnace steelmaking continuous casting and rolling stainless steel round bar production system, comprising the following steps:

[0038] 1) Put anthracite, sintered nickel ore and coke into the blast furnace, the mass ratio is 9% of anthracite, 63% of sintered nickel ore, and 33% of coke, and feed rich oxygen into the blast furnace to smelt the additives into molten nickel iron, at the same time The blast furnace tapping temperature is controlled at 1440~1460°C;

[0039]2) The molten nickel iron melted in step (1) is transported into the AOD furnace through the first ladle tank, and lime, ferrosilicon, fluorite, high-carbon ferrochromium, electrolytic manganese and ferronickel are added to the AOD furnace, and the mass distribution is The ratio is 8% lime, 1.5% ferrosilicon, 1.5% fluorite, 30% high-carbon ferrochrome, 1% electrolytic manganese, and 6...

Embodiment 3

[0044] A blast furnace steelmaking continuous casting and rolling stainless steel round bar production process comprises a blast furnace steelmaking continuous casting and rolling stainless steel round bar production system, comprising the following steps:

[0045] 1) Add anthracite, sintered nickel ore and coke into the blast furnace, the mass ratio is 7.5% of anthracite, 60% of sintered nickel ore, and 33% of coke, and feed rich oxygen into the blast furnace to smelt the additives into molten nickel iron, at the same time The blast furnace tapping temperature is controlled at 1500°C;

[0046] 2) The molten nickel iron melted in step (1) is transported into the AOD furnace through the first ladle tank, and lime, ferrosilicon, fluorite, high-carbon ferrochromium, electrolytic manganese and ferronickel are added to the AOD furnace, and the mass distribution is The ratio is 7% lime, 1.2% ferrosilicon, 1.3% fluorite, 25% high-carbon ferrochrome, 6% electrolytic manganese, and 65%...

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PUM

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Abstract

The invention relates to a blast furnace steelmaking, continuous casting and rolling stainless steel round bar production system and production process, including a blast furnace for smelting molten iron, characterized in that, the bottom side of the blast furnace is provided with a transmission mechanism for receiving The ladle tank of molten iron, the ladle tank is hoisted to the top of the AOD furnace by the crane arranged above the output end of the transmission mechanism, and the LF furnace for refining the molten steel smelted by the AOD furnace is arranged beside the AOD furnace. The direction of the outlet of the LF furnace is provided with a second ladle tank that transports molten steel to the billet continuous casting machine through the second transmission mechanism, and the steel billet output from the billet continuous casting machine is sent to the steel billet heating furnace through the third transmission mechanism. The output end of the heating furnace is provided with a fourth conveying mechanism for conveying the heated billet to the rolling mill to form a round steel bar. The production system not only has a compact structure, saves energy consumption, but also has a simple and convenient production process.

Description

technical field [0001] The invention relates to a blast furnace steelmaking continuous casting and continuous rolling stainless steel round bar production system and production process. Background technique [0002] In the prior art, the production of stainless steel round steel adopts a short process. First, the steel billet is produced, and then the steel billet is transported to the factory for preparing the round steel. It is also prone to loss during transportation. The steel billets transported to the round steel processing plant need to go through the forging and rolling process, and the steel billets need to be heated to thousands of degrees before forging and rolling. Because the temperature of the steel billet transported to the round steel processing plant has usually dropped to normal temperature, and the steel billet is heated from room temperature to thousands of degrees, which consumes a lot of energy and costs a lot. Therefore, a new stainless steel round st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/14C21D9/70B21B1/46
Inventor 项炳和
Owner FUJIAN QINGTUO NICKEL IND CO LTD
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