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

Composite iron pellets

A technology of iron balls and pellets, applied in the field of composite iron pellets, can solve the problems of utilization and integration that need to be developed and tested

Active Publication Date: 2019-11-15
SAUDI BASIC IND CORP SA
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although solid carbon materials have been considered as a suitable solution, their utilization and integration in steelmaking and ironmaking processes remains to be developed and tested

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
  • Composite iron pellets
  • Composite iron pellets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0143] In one aspect, Tables 1 and 2 below show typical analyzes of iron ore or oxide fines that can be used to prepare composite iron pellets. In other aspects, other ingredients can include varying amounts of carbon, sulfur, sodium, potassium, zinc, chlorine, fluorine, and / or water.

[0144] Table 1*

[0145]

[0146] *Amount provided as a percentage of the total composition (by weight)

[0147] Table 2*

[0148]

[0149] *Amount provided as a percentage of the total composition (by weight)

[0150] In one aspect, the core batch can be prepared by premixing all ingredients (with or without binder) in a dry mix and mixing for the desired time. The premix can then be fed directly into a disc pelletizer. The core extrudate can then be pelletized and dried at about a suitable temperature for a suitable time. The shell can then be prepared by premixing all shell ingredients (with or without binder) in the dry mix and mixing for the desired time. The outer shell premix...

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
diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

Disclosed herein are methods and compositions for preparing composite iron pellets comprising an inner core comprising iron ore and a reducing agent comprising carbonaceous material and an outer shell comprising unreduced iron ore. The resulting composite iron pellets can be used to prepare direct reduced iron (DRI) with increased yield while reducing gas consumption.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of and priority to US Application No. 61 / 934555, filed January 31, 2014, which is incorporated by reference in its entirety. technical field [0003] The invention relates to composite iron pellets with a core-shell structure for direct reduced iron (DRI) preparation. [0004] Background of the invention [0005] In the iron and steelmaking industries, the current high rate of consumption of natural gas and the anticipated future unavailability of more loads of gas have drawn greater attention to alternative reducing agents as partial replacements for natural gas. Although solid carbon materials have been considered as a suitable solution, their utilization and integration in steelmaking and ironmaking processes remain to be developed and tested. [0006] Accordingly, there remains a need for ironmaking methods and materials that can provide savings in natural gas consumption while m...

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): C22B1/245C21B13/00
CPCC21B13/0046C22B1/2406C22B1/245Y02P10/134Y02P10/143C21B13/0073C21B13/02
Inventor 穆罕默德·巴赫贾特·萨迪克
Owner SAUDI BASIC IND CORP SA