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

Method For Preparing Ferro Molybdenum From Molybdenite

A manufacturing method and technology of molybdenite, applied in the field of ferromolybdenum, can solve problems such as inability to obtain uniform products, difficult to control reactions, etc., achieve uniform production and continuous processing, promote recovery, and reduce energy consumption

Inactive Publication Date: 2012-12-05
KOREA INST OF GEOSCI & MINERAL RESOURCES
View PDF8 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the metallothermic reduction occurs explosively and completes almost instantaneously, making it difficult to control the reaction and not to obtain a homogeneous product

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 Ferro Molybdenum From Molybdenite
  • Method For Preparing Ferro Molybdenum From Molybdenite
  • Method For Preparing Ferro Molybdenum From Molybdenite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The sample mixture (i.e., 192 g of molybdenite, 56 g of iron powder and 32 g of aluminum powder) was spun at 140 rpm for 30 minutes at a filling rate of 50% in a 1-liter ceramic ball mill (diameter: 2 cm) and then separated from the balls. ) was used as a sample for reduction experiments.

[0041] In the reduction reaction, an alumina crucible with a diameter of 8 cm and a height of 12 cm was used as a reactor. The mixed sample placed in the reactor was charged as figure 1 The graphite crucible of the apparatus is shown, and the experiment is carried out. Flow argon gas at a flow rate of 5 L / min for 20 minutes, start heating, and the temperature of the crucible reaches 1690° C. after 70 minutes. The reduction reaction was continued at this temperature for 10 minutes, and then the crucible was cooled for 12 hours at ambient temperature. In the experimental area, the reaction products were well separated into slag and ferromolybdenum. In this case, by figure 2 X-ray d...

Embodiment 2

[0043] In the mixing of samples, Example 2 is similar to Example 1, except that 36 g of aluminum powder is added.

Embodiment 3

[0045] In the mixing of samples, Example 3 is similar to Example 1, except that the added aluminum powder is 38g.

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
Login to View More

Abstract

The present invention relates to preparing ferro molybdenum from molybdenite concentrate, and more particularly, to a method for directly preparing ferro molybdenum having copper content of 0.5% or less from molybdenite with high copper content, without involving a separate process of eliminating copper, by inserting iron in a heating furnace and reacting same at a high temperature to prepare ferro molybdenum on the lower portion, and slag with aluminum sulfide and iron sulfide as main ingredients on the upper portion, so as to have most of the copper (80-95%) in the molybdenite exist in the slag layer. Compared to the existing thermite reaction, the present invention is advantageous in terms of a shorter process and reduced consumption of aluminum, which is a reducing agent.

Description

technical field [0001] The invention relates to a method for producing ferromolybdenum with a copper content of 0.5 wt% or less from low-grade molybdenite (containing 0.5 wt% to 10 wt% Cu) with a high copper content. Background technique [0002] Molybdenum is a relatively rare element not found in nature as a metal. Molybdenum can improve the thermal creep of steel, prevent temper brittleness of steel and improve the corrosion resistance of steel. As an alloying element, it is a very important element in the manufacture of heat-resistant steel or corrosion-resistant steel. [0003] Molybdenite (MoS 2 ) are very economically available primary raw materials. Usually, the raw ore contains a lower concentration of molybdenite (MoS 2 ); however, molybdenite is easily recovered and concentrated by froth flotation due to its sulfide nature. Available natural resources of molybdenite are mainly located in countries such as China, the United States or Chile, and are mainly produ...

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): C22C33/04C22B34/34C22B9/05
CPCC22B5/04C22C1/02C22C27/04C22B34/34
Inventor 崔荣允金相培徐昌烈南哲祐
Owner KOREA INST OF GEOSCI & MINERAL RESOURCES
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