Method for separating blended iron oxide from iron powder

A technology for iron oxide and iron powder, applied in recycling technology, grain processing and other directions, can solve the problems of iron powder and iron oxide, high energy consumption cost, low yield and other problems, and achieve low energy consumption cost and low energy consumption. The effect of production cost and simple preparation process

Active Publication Date: 2016-12-07
济南鲍德炉料有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent CN2007101688837 discloses a method for purifying iron powder from steelmaking sludge coarse particles, but the iron powder produced by this method can only be collected to 0.096 mm, and the i

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
  • Method for separating blended iron oxide from iron powder
  • Method for separating blended iron oxide from iron powder

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0034] Example 1

[0035] Production process: raw materials-first-stage screening (removal of particles larger than 0.42 mm and less than 0.075 mm)-winnowing crushing system-second-stage screening (removing particles less than 0.075 mm)-two-stage dry magnetic separation- Weigh the packaging.

[0036] Among them, the raw material composition and particle size are shown in Table 1 and Table 2:

[0037] Table 1 Ingredients of raw materials (%)

[0038]

[0039]

[0040] Table 2 Particle size composition of raw materials

[0041] Particle size mm

[0042] The first level of screening is used to remove particles outside the product requirements, that is, particles above 0.42 mm and particles below 0.075 mm and dust. In order to improve the screening efficiency and prevent the screen from clogging, an ultrasonic screening machine is used.

[0043] The winnowing crushing system is used to crush iron oxide, because the winnowing crusher uses the collision of materials to achieve the crushing...

Example Embodiment

[0047] Example 2

[0048] Production process: raw materials-first stage screening (removal of particles larger than 0.42 mm and less than 0.075 mm)-winnowing crushing system-second stage screening (removing particles less than 0.075 mm)-two-stage magnetic separation-weighing Quantity packaging. Among them, the raw materials are the same as in Example 1.

[0049] The first level of screening is used to remove particles below the product requirements, that is, to remove particles and dust larger than 0.42 mm and less than 0.075 mm. In order to improve the screening efficiency, an ultrasonic screening machine is used.

[0050] The air separation crushing system is used to crush iron oxide again, because the crusher uses the collision of materials to achieve the crushing effect. It has a good crushing effect on iron oxide, but has a poor crushing effect on iron powder (good toughness, no collision Crush the iron powder). During the crushing process, a part of the iron powder particles...

Example Embodiment

[0054] Example 3

[0055] Production process: raw materials-first-stage screening (removal of particles above 0.42 mm and below 0.075 mm)-wind separation and crushing system-second-stage screening (removal of particles below 0.075 mm)-two-stage dry magnetic separation- Weigh the packaging. Among them, the raw materials are the same as in Example 1.

[0056] The first level of screening is used to remove particles below the product requirements, that is, particles and dust above 0.42 mm and below 0.075 mm. In order to improve the screening efficiency, an ultrasonic screening machine is used.

[0057] The air separation crushing system is used to crush iron oxide again, because the crusher uses the collision of materials to achieve the purpose of crushing. It has a good crushing effect on iron oxide, but it has a poor crushing effect on iron powder (good toughness, no collision Crush the iron powder). During the pulverization process, the powdered iron oxide adhering to the surface ...

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
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Surface magnetic field strengthaaaaaaaaaa
Login to view more

Abstract

The invention provides a method for separating blended iron oxide from iron powder. The method comprises the steps that the iron powder with the grain size ranging from 0.075 mm to 1 mm is taken; the above iron powder is sorted, particles with the grain size larger than 0.42 mm and particles with the grain size smaller than 0.075 mm are removed, and a material I is obtained; the material I is subjected to winnowing type grinding treatment, and a material II is obtained; the material II is sorted, particles with the grain size smaller than 0.075 mm are removed, and a material III is obtained; and the material III is subjected to two-level dry method magnetic separation, and the iron powder is obtained. The iron oxide contained in the particles with the grain size ranging from 0.042 mm to 0.075 mm in the iron powder is separated out, only the iron powder is left (or a small amount of iron oxide is contained, and the requirement can be met as long as the grade reaches MFe88%), the grade can reach MFe88% or above accordingly, the yield is increased, and the iron powder production cost is reduced. The steps are simple, operation is convenient, and practicability is high.

Description

technical field [0001] The invention belongs to the technical field of powder crushing, in particular to a method for separating mixed iron oxide from iron powder. Background technique [0002] The quality of the iron powder used as a reducing agent requires a particle size between 0.42 mm and 0.075 mm, and a grade of MFe (elemental iron) ≥ 88%. The iron powder used as a reducing agent is produced by using coarse granular sludge from steelmaking. The coarse granular sludge is passed through three Magnetic separation, two-stage ball milling, water washing, drying and other processes produce iron powder with a particle size ranging from 1mm to 0.058mm and a grade of MFe70%, among which the iron powder with a particle size between 0.42mm and 0.125mm contains only A small amount of iron oxide particles and iron oxide powder adhering to the surface of iron powder, but the grade has met the quality requirement of MFe≥88%. At present, this part of iron powder can only be collected ...

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): B02C23/08B02C23/14B22F9/04B22F8/00
CPCB02C23/08B02C23/14B22F8/00B22F9/04Y02W30/50
Inventor 李明波江鹏刘长利韩冰蒋雪军刘国王若然张岐涛孙永栋
Owner 济南鲍德炉料有限公司
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