Smelting method for retaining hot dreg of converter

A smelting method and converter technology, which is applied in the manufacture of converters, etc., can solve problems such as easy splashing and difficulty in accurately controlling the amount of hot slag remaining in the converter, and achieve the effects of reducing emissions, stabilizing the blowing process, and ensuring safety

Active Publication Date: 2015-03-25
SHANGHAI MEISHAN IRON & STEEL CO LTD
View PDF4 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a smelting method for retaining converter hot slag, which mainly solves the technical problems in the prio

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
  • Smelting method for retaining hot dreg of converter
  • Smelting method for retaining hot dreg of converter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The present invention will be further illustrated below in conjunction with specific embodiments, and it should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0019] A smelting method for retaining converter hot slag disclosed by the present invention comprises the following steps:

[0020] a. Slag dumping treatment, slag dumping treatment is carried out after the converter is tapped, and the tilting angle of the converter is controlled at 95-115 degrees. By observing the display value of the slag tank scale, 30-50% of the total slag is poured out, and 50-70% is left The slag is in the converter, and then the converter is shaken back to zero;

[0021] b. Furnace protection by slag splashing, add a certain amount of light-burned magnesium balls and light-burned dolomite to the slag left in the converter in step a for slag-splashing furnace protecti...

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 smelting method for retaining hot dreg of a converter, which mainly solves the technical problem in the prior art that retained hot dreg of the converter is easy to splash in the early converter converting period and the retaining amount of hot dreg of the converter is hard to control accurately. According to the technical scheme disclosed by the invention, the smelting method for retaining hot dreg of the converter comprises the following steps: a, pouring dreg: after tapping of the converter, pouring dreg, and returning the converter to zero degree after 30-50% of the total weight of dreg is poured; b, splashing dreg to protect the converter: adding a certain amount of caustic calcined magnesite balls and caustic calcined dolomite into dreg of the converter to splash dreg to protect the converter; c, adding raw dolomite or limestone into the converter for mixing dreg, and after mixing the dreg, adding molten iron and waste steel into the converter; and d, adding a converter dreg making material into the converter and then converting the molten iron, the waste steel and the converter dreg making material in the converter. Compared with conventional smelting process without retaining dreg, the converting process is stable and the consumption of the converter dreg making material is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgy converter smelting, in particular to a smelting method for retaining converter hot slag. Background technique [0002] Environmental protection, energy saving and consumption reduction and production cost reduction have become the main tasks for the survival and development of iron and steel enterprises. Slagging materials such as lime, light-burned magnesium balls and light-burned dolomite need to be added to the converter smelting process to remove harmful elements in steel and protect the furnace by splashing slag. In the traditional process, all the slag is poured out after the slag splashing to protect the furnace, and then the next furnace operation is carried out. If this part of slag is left and used as slagging material for the next furnace, on the one hand, the physical heat of this part of slag can be utilized; on the other hand, the amount of slag-making material add...

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
IPC IPC(8): C21C5/36
Inventor 虞大俊唐洪乐王多刚洪建国
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap