Method for preparing iron oxide red by utilizing titanium dioxide byproduct ferrous sulfate, product and application of product

A technology of iron oxide red and ferrous sulfate, which is applied in the direction of iron sulfate, iron oxide, iron oxide/iron hydroxide, etc., can solve the problems of limited application range of iron oxide red, improve the effect of coagulation and precipitation, and inhibit hydrolysis The effect of the process

Active Publication Date: 2020-09-08
SINOSTEEL NANJING NEW MATERIALS RES INST CO LTD +1
View PDF14 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Aiming at the problem that the existing process of using titanium dioxide by-product ferrous sulfate to prepare iron oxide red cannot deeply remove silicon, which leads to the limited application range of iron oxide red, the present invention provides a method for preparing iron oxide red by using titanium white by-product ferrous sulfate method, can achieve the content of silica in iron oxide red ≤0.008%

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 preparing iron oxide red by utilizing titanium dioxide byproduct ferrous sulfate, product and application of product
  • Method for preparing iron oxide red by utilizing titanium dioxide byproduct ferrous sulfate, product and application of product
  • Method for preparing iron oxide red by utilizing titanium dioxide byproduct ferrous sulfate, product and application of product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] As shown in the flow chart, the method for preparing iron oxide red by utilizing titanium dioxide by-product ferrous sulfate in this implementation:

[0059] (1) Purification and removal of impurities: Dissolve ferrous sulfate, a by-product of titanium dioxide, in water under stirring, control the reaction temperature at 50°C, add 5mol / L ammonia water to make the pH of the system 4.5; then add 0.2mol / L sulfuric acid Ammonium, stirred for 15 minutes; filtered and washed to obtain a preliminary purified ferrous sulfate solution; adding silicon remover to the preliminary purified ferrous sulfate solution, polymerized ferric sulfate, cationic guar gum, and sodium alginate in water were added to the silicon remover The mass percentage contents of the ions are 5000ppm, 500ppm and 120ppm respectively; control the temperature of the system at 50°C, add 5mol / L ammonia water to make the pH of the system 5.0, stir for 20 minutes, let stand for 6 hours, and filter to obtain Fe after...

Embodiment 2

[0063] The titanium dioxide by-product ferrous sulfate used in the present embodiment is the same as that in Embodiment 1.

[0064] The method for preparing iron oxide red by using titanium dioxide by-product ferrous sulfate in this implementation: (1) Purify and remove impurities: dissolve titanium dioxide by-product ferrous sulfate in water under stirring, control the reaction temperature at 30°C, add 5mol / The sodium hydroxide solution of 1 L makes the system pH value be 5.0; Then add the sodium sulfide of 0.2mol / L, stir 15 minutes; Filter, wash and obtain the ferrous sulfate solution of initial purification; The silicon agent, the mass percentage content of polyferric sulfate, cationic guar gum, and sodium alginate in water in the silicon-removing agent are 2000ppm, 500ppm, and 550ppm respectively; the temperature of the control system is 50°C, adding 5mol / L sodium hydroxide solution Make the pH value of the system 5.0, stir for 20 minutes, let stand for 10 hours, filter t...

Embodiment 3

[0068] The titanium dioxide by-product ferrous sulfate used in the present embodiment is the same as that in Embodiment 1.

[0069]The method for preparing iron oxide red by using titanium dioxide by-product ferrous sulfate in this implementation: (1) Purify and remove impurities: dissolve titanium dioxide by-product ferrous sulfate in water under stirring, control the reaction temperature at 50°C, add 2mol / The sodium hydroxide solution of 1 L makes the system pH value be 4.0; Then add the sodium sulfide of 0.4mol / L, stir 20 minutes; Filter, wash and obtain the ferrous sulfate solution of initial purification; The silicon agent, the mass percent content of polyferric sulfate, cationic guar gum, and sodium alginate in water in the silicon-removing agent are 8000ppm, 2000ppm, and 1000ppm respectively; the temperature of the control system is 60°C, adding 2mol / L sodium hydroxide solution and Make the pH value of the system 5.0, stir for 20 minutes, let stand for 12 hours, filter...

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 method for preparing iron oxide red from a titanium dioxide byproduct ferrous sulfate, a product and application of the product, and belongs to the technical field of magnetic materials. The method comprises the following steps: S101, purification and impurity removal; S102, oxidation synthesis; and S103, roasting, crushing and screening, wherein a silicon removal agent adopted for purification and impurity removal is a compound of polyferric sulfate, cationic guar gum and sodium alginate. According to the invention, by reasonably matching a plurality of inorganic andorganic high-molecular polymers, the coagulating sedimentation effect, the electric neutralization capability and the bridge frame adsorption effect of the silicon removal agent are fully exerted, the silicon impurity in ferrous sulfate is effectively removed, the feeding speed of a ferrous sulfate solution and an alkaline solution is accurately controlled in the oxidation synthesis process, hydrated iron oxide precipitate which is good in consistency, easy to filter and wash and high in activity is obtained, and an iron oxide red product high in purity and good in performance is successfullyprepared by further setting a reasonable roasting system.

Description

technical field [0001] The invention belongs to the technical field of magnetic materials, and more specifically relates to a method and a product for preparing iron oxide red by using ferrous sulfate as a by-product of titanium white. The iron oxide red is suitable for high-performance soft magnetic ferrite. Background technique [0002] Soft ferrite magnetic materials have functions such as power conversion, signal processing, anti-electromagnetic interference, and new energy inverters, and have been widely used in wireless communication, automatic control, 3C electronics, wireless charging, new energy vehicles, energy storage, medical care, etc. field, and the main raw material for the production of soft ferrite magnetic materials is Fe 2 o 3 (accounting for about 70%), that is, iron oxide red, so the quality of iron oxide red directly affects the performance of soft ferrite magnetic materials. [0003] At present, the main source of iron oxide red for soft ferrite magn...

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 Applications(China)
IPC IPC(8): C01G49/06C01G49/14H01F1/34H01F41/02
CPCC01G49/06C01G49/14H01F1/344H01F41/02C01P2006/80
Inventor 钱有军裴晓东骆艳华李晓祥李涛刘晨李昕徐春宇
Owner SINOSTEEL NANJING NEW MATERIALS RES INST 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