Unlock instant, AI-driven research and patent intelligence for your innovation.

A double vanadium extraction method

A converter and molten steel technology, applied in the manufacture of converters, etc., can solve problems such as the inability to realize vanadium extraction by the double-connected converter method

Active Publication Date: 2022-03-29
SICHUAN DAZHOU IRON & STEEL GROUP
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, the purpose of the present invention is to provide a dual vanadium extraction method, which can effectively solve the problem that a steelmaking enterprise with only two converters cannot realize the vanadium extraction by the dual converter method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A double vanadium extraction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Experiments were carried out in the 80-ton first converter and second converter.

[0066] Statistically, measure and calculate the liquidus temperature of semi-steel in the molten iron tank, take 1295°C, then the minimum temperature of semi-steel entering the furnace is 1305°C.

[0067] Statistics and calculation of the semi-steel temperature drop coefficient in the molten iron tank, take 0.4, and take the initial temperature of the semi-steel in the molten iron tank after the converter extracts vanadium and steel at the same time as 1360 ° C, then the maximum sedation time of the semi-steel in the molten iron tank t = (1360-1305) / 0.4 = 137.5 (min).

[0068] Take vanadium extraction period 15 (min / furnace) and semi-steel steelmaking period 23 (min / furnace), then semi-steel molten steel in the molten iron tank waits for converter semi-steel steelmaking maximum furnace number x=137.5 / (23-15)=17( furnace).

[0069] Then, when producing according to the dual vanadium ex...

Embodiment 2

[0073] Experiments were carried out in the 80-ton first converter and second converter.

[0074] Statistically, measure and calculate the liquidus temperature of semi-steel in the molten iron tank, take 1295°C, then the minimum temperature of semi-steel entering the furnace is 1305°C.

[0075] Statistics and calculation of the semi-steel temperature drop coefficient in the molten iron tank, take 0.3, and take the initial temperature of the semi-steel in the molten iron tank after the converter extracts vanadium and steel at the same time as 1360 ° C, then the maximum sedation time of the semi-steel in the molten iron tank t = (1360-1305) / 0.3 = 183.3 (min).

[0076] Take the converter vanadium extraction period of 14 (min / furnace) and the converter semi-steel steelmaking period of 21 (min / furnace), then the semi-steel molten steel in the molten iron tank is waiting for the maximum furnace number of converter semi-steel steelmaking x=183.3 / (21-14)= 26 (furnace).

[0077] The...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a double vanadium extraction method, which comprises a first converter and a second converter, the second converter is a semi-steel steelmaking converter, including steps: S1: the first converter is used as a vanadium extraction converter, and the vanadium extraction cycle is carried out Vanadium is extracted furnace by furnace, semi-steel after vanadium extraction is transferred to the second converter and steelmaking is carried out furnace by furnace according to the semi-steel steelmaking cycle, and the remaining semi-steel is stored in the molten iron tank until the total amount of semi-steel in the molten iron tank reaches The total amount corresponding to the maximum number of semi-steelmaking furnaces waiting for the converter, the maximum number of waiting furnaces for the semi-steel steelmaking is the maximum number of waiting furnaces that can meet the conditions for semi-steel molten steel to enter the furnace; S2: The first converter is used as a semi-steel steelmaking converter, And carry out steelmaking step by step with the second converter according to the half-steel steelmaking cycle, until the total remaining amount of half-steel in the molten iron tank is the amount of half-steel corresponding to one furnace or two furnaces, and then return to step S1. By adopting the dual vanadium extraction method, only two converters are needed, which saves production costs and maximizes the utilization of resources.

Description

technical field [0001] The invention relates to the technical field of steelmaking, and more specifically, relates to a method for double-linked vanadium extraction. Background technique [0002] Vanadium is an important alloying element, mainly used in the steel industry. Vanadium-containing steel has excellent characteristics such as high strength, high toughness, and good wear resistance, so it is widely used in industries such as machinery, automobiles, shipbuilding, railways, aviation, bridges, electronic technology, and national defense industries. 85%. [0003] Vanadium-containing iron ore is smelted in a blast furnace to obtain vanadium-containing molten iron. The converter is smelted with vanadium-containing molten iron, and the vanadium in the molten iron is oxidized to form vanadium-containing slag, which is called vanadium slag. Vanadium slag is the main raw material for the manufacture of vanadium metal and vanadium-containing alloys. [0004] Since the deve...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22B34/22C21C5/36
CPCC22B34/22C21C5/36
Inventor 周大伟邱达全李元廷王林王松杜国权龚波朱忠诚毛朝贵张兴勇
Owner SICHUAN DAZHOU IRON & STEEL GROUP