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

Modifier for protecting vanadium extracting converter and its preparation method and method for protecting furnace

A modifier and converter technology, which is applied in the manufacture of converters, etc., can solve the problems of inability to protect the furnace by slag splashing, low temperature of converter slag for vanadium extraction, etc., and achieve the effect of increasing service life and increasing slag temperature

Active Publication Date: 2016-01-06
攀钢冶金材料有限责任公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem in the prior art that the slag temperature of the vanadium extracting converter is low, and the slag splashing cannot be carried out to protect the furnace, and to provide a new modifier for the vanadium extracting converter and its preparation method and an application of the present invention. The furnace protection method of the modifying agent, using the modifying agent of the present invention, can modify the slag of the vanadium extraction converter, thereby realizing the protection of the furnace by slag splashing, and significantly improving the service life of the vanadium extraction converter

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
  • Modifier for protecting vanadium extracting converter and its preparation method and method for protecting furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0046] Embodiment 1-6 is used to illustrate the preparation of modifier for vanadium extraction converter furnace protection

[0047] Mix according to the ingredients and proportions shown in the following Table 2, and then knead on a mixer mill for 8 minutes to obtain modifiers A1-A6 for vanadium extraction converter protection with a particle diameter of 1-3 mm.

Embodiment 7-12

[0053] (1) Vanadium slag is not produced after semi-steel is extracted, and the vanadium slag is left in the vanadium extraction converter;

[0054] (2) Add modifiers A1-A6 according to the amount of vanadium slag;

[0055] (3) After adding the modifier, shake the furnace 3-4 times to allow the vanadium slag and the modifier to fully mix;

[0056] (4) Lower the oxygen lance to blow oxygen to increase the slag temperature;

[0057] (5) Convert the oxygen in the oxygen lance into nitrogen for slag splashing.

[0058] (6) After cooling for 10-30 minutes after slag splashing, proceed to the next vanadium extraction. The service life of the slag splash layer on the converter is shown in Table 3.

[0059] In addition, the concrete conditions of embodiment 7-12 are shown in table 3

[0060] table 3

[0061]

[0062] Note: The service life of the slag-splashing layer refers to the number of furnaces in which vanadium is continuously extracted after slag-splashing until t...

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
Login to View More

Abstract

The present invention discloses a modifier for vanadium extraction converter protection. The modifier contains MgO and C, the MgO content in the modifier is 45-80 wt%, and the C content is 10-40 weight parts by adopting the amount of the MgO in the modifier as 100 weight parts. The invention further provides a preparation method of the modifier for vanadium extraction converter protection, and a converter protection method using the modifier. With the modifier, modification can be performed on the slag of the vanadium extraction converter so as to achieve converter protection with splashed slag and significantly improve the service life of the vanadium extraction converter.

Description

technical field [0001] The invention relates to a modifier for protecting a vanadium-extracting converter, a preparation method thereof and a method for protecting the furnace. Background technique [0002] Usually, the vanadium extraction converter directly discharges the slag after the vanadium extraction is completed, and the slag is used for vanadium extraction, and the vanadium extraction converter continues to smelt the next furnace. Since the vanadium extracting converter is continuously used for smelting, there is a problem of short service life of the vanadium extracting converter. [0003] Now, in order to improve the service life of the converter, the method of protecting the furnace by splashing slag is widely used. However, after the vanadium extraction converter finishes extracting vanadium and semi-steel, the slag temperature is about 1250°C, and the slag has a relatively low melting point due to its high vanadium content. The slag will also be melted quickl...

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): C21C5/36C21C5/28
Inventor 段大福郭强段晓东杨强余斌王长民王怀斌邓丙宋柯成
Owner 攀钢冶金材料有限责任公司