Desulfurating agent for out-of-furnace treatment and preparation method thereof

A technology of out-of-furnace treatment and desulfurizer, which is applied in the field of desulfurizer for out-of-furnace treatment and its preparation, can solve the problems of high energy consumption of refining agents, and achieve the effects of short treatment time, easy realization of treatment conditions, and low energy consumption

Inactive Publication Date: 2010-02-17
WUHAN UNIV OF SCI & TECH
View PDF2 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation process of the refining agent also needs to be heated at a high temperature for a long

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A desulfurizer for out-of-furnace treatment and a preparation method thereof. First, the waste slag for out-of-furnace treatment is put into water at a temperature of 250-374°C according to a solid-to-liquid ratio of 1: (2-5), stirred for 2-30 minutes, and then Filtrating and drying manually; then bagging 30-55 wt% of the above-mentioned treated waste slag outside the furnace and 45-70% of the lime.

Embodiment 2

[0027] A desulfurizer for external furnace treatment and a preparation method thereof. First, according to the solid-to-liquid ratio of 1: (5-8), the waste slag treated outside the furnace is put into water at a temperature of 80-250°C, stirred for 30-60 minutes, and then Filtrate and dry naturally; then mix 55-80 wt% of the above-mentioned treated waste slag outside the furnace and 20-45% of lime and pack it into bags.

Embodiment 3

[0029] A desulfurizing agent for treatment outside the furnace and a preparation method thereof. Put the waste slag treated outside the furnace into water with a temperature of 300-374°C according to the solid-to-liquid ratio of 1: (2-4), stir for 2-20 minutes, then filter and dry manually; then put 60-80wt% of The waste slag treated outside the furnace and 20-40% of the additives after the above treatment are packed into bags respectively.

[0030] Additives are bagged separately according to the following components and their contents:

[0031] Lime 70~85wt%;

[0032] Aluminum oxide 15-30wt%.

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 relates to a desulfurating agent for out-of-furnace treatment and a preparation method thereof. The technical scheme is achieved as follows: putting waste residues of out-of-furnace treatment in water with a temperature of 80-374 DEG C according to a solid-to-liquid ratio of 1:(2-8), stirring the waste residues for 2-60 minutes and then filtering and drying the waste residues; then uniformly mixing 30-80 weight percent of the treated waste residues of the out-of-furnace treatment and 20-70 weight percent of additive and then packaging or respectively packaging. The waste residuesof the out-of-furnace treatment comprise the following chemical components by weight: 30-65 percent of CaO, 8-35 percent of SiO2, 2-30 percent of Al2O3, 0.2-3.5 percent of S and the balance of MgO, CaF2, MnO, FeO, P and other impurities. The additive is uniformly mixed and packaged or respectively packaged according to the following components by weight: 70-100 percent of lime, 0-30 percent of one of bauxite, aluminum oxide and fluorite and 1-10 percent of one of aluminum ball and calcium carbide. The invention has the characteristics of simple process, low energy consumption and low cost; and the prepared desulfurating agent for the out-of-furnace treatment has good metallurgical property and strong desulfurating capacity.

Description

technical field [0001] The invention belongs to the technical field of desulfurizers for iron and steel metallurgy. In particular, it relates to a desulfurizing agent for treatment outside a furnace and a preparation method thereof. technical background [0002] In order to improve the quality of steel products, reduce production costs, and shorten the production cycle, more and more attention has been paid to the treatment outside the furnace in the process of steel production. Out-of-furnace treatment is the general term for molten iron pretreatment and molten steel refining outside the furnace. Metallurgical means of chemical properties. [0003] A large amount of waste slag will be produced in the process of external treatment of iron and steel smelting furnaces. Due to reasons such as high alkalinity, metal particles and harmful elements, its utilization methods and utilization rate are extremely limited. more serious pollution. [0004] At present, the waste slag t...

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): C21C7/064
Inventor 倪红卫何环宇张华刘吉刚
Owner WUHAN UNIV OF SCI & TECH
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