Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Iron-rich cold-set pellets and their manufacturing process and application

A technology for cold-solid pelletizing and manufacturing process, which is applied in the field of comprehensive utilization of resources and can solve the problems of affecting the pelletizing performance, strength and metal iron content of enriched sludge pellets, reducing the yield of metal iron, and weak anti-beating ability. , to achieve stable dephosphorization and desulfurization effect, reduce energy consumption, and achieve the effect of fast slag.

Active Publication Date: 2015-09-23
PANGANG GRP PANZHIHUA STEEL & VANADIUM
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no combustion pollution in the whole process of this method, but there is still room for improvement in practical applications such as ball forming performance and strength, product moisture, pulverization rate, etc.
[0006] The drying method in the existing similar technology basically adopts furnace baking, but furnace baking will greatly affect the ball forming performance, strength and metal iron content of the enriched sludge balls, and the anti-beating ability is weak, and the pulverization is serious. Significantly reduced yield rate of metallic iron

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
  • Iron-rich cold-set pellets and their manufacturing process and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The manufacturing process of iron-rich chilled pellets of the present invention is characterized in that the steps are as follows:

[0024] (1) Prepare raw materials and pre-dry: use iron-rich sludge, binder, and soda ash as raw materials; control the water content of raw iron-rich sludge to 5-8%;

[0025] (2) Mixing: Mix the iron-rich sludge, binder, and soda ash, and stir until the raw materials are evenly mixed, and the non-stick stirring roller shall prevail to obtain the mixture;

[0026] (3) Ball pressing: the mixture obtained in step (2) is pressed into pellets; the pellets are sieved, and the sifted powder is continuously pressed to form pellets;

[0027] (4) Drying: The pellets obtained in step (3) are air-dried naturally, cooled and solidified to obtain the product. Among them, the freezing time is about 2-3 days. After meeting the moisture requirements, it should be put into storage, and rainproof measures should be taken during the open-air drying process,...

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
crush indicatorsaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of comprehensive resource utilization and relates to an iron-rich cooled agglomerated pellet, and a manufacturing technology and a purpose of the iron-rich cooled agglomerated pellet. The invention aims at providing the manufacturing technology of the iron-rich cooled agglomerated pellet, which has the advantages of good pelletizing performance, strong knock resistance, improved pulverization situation and high metallic iron yield. The manufacturing technology comprises the steps of (1) predrying, (2) mixing, (3) pelleting, and (4) natural drying. The key improvements of the technology are (1) selection of a binding agent and (2) a natural airing mode. The iron-rich cooled agglomerated pellet prepared by the technology can be used for replacing scrap steel to be applied to a steel converter for smelting. After enrichment sludge replaces the scrap steel, the heat adjustment of the converter is more flexible in comparison with the scrap steel, a slag state in a process is good, slag comes fast, dephosphorization and desulfuration effects are stable, and the total iron yield is 89.29% and reaches an expected level. Compared with the scrap steel, the production technology is superior, and the price is lower.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of resources, relates to the bonding and agglomeration of metallurgical ore powder, in particular to an iron-rich cold solidified pellet and its manufacturing process and application. Background technique [0002] The existing cold-setting pellet processing methods are almost all secondary resources produced by iron and steel plates, such as iron-containing materials, metallurgical dust and industrial by-product resources, using binders or composite adhesives, slaked lime powder, coal powder or other required The ingredients are original, and the balls are made through the processes of raw material drying-feeding-mixing-ball pressing-drying. Such as: [0003] Tongji University uses a composite adhesive to make cold-set pellets, and uses a composite adhesive synthesized by an organic adhesive and an inorganic adhesive to combine with iron concentrate powder and iron-containing sl...

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): C22B1/242C22B1/244C21C5/28
Inventor 路强刘珂含罗开林杨金成
Owner PANGANG GRP PANZHIHUA STEEL & VANADIUM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com