Manufacture of active magnesium oxide

A kind of technology of active magnesium oxide and manufacturing method, applied in the field of inorganic chemical industry

Inactive Publication Date: 2005-05-11
CHINA NAT OFFSHORE OIL CORP +1
View PDF0 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The method of producing active magnesium oxide from hydromagnesite has not been reported before

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
  • Manufacture of active magnesium oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] As shown in Figure 1, after beneficiation, the natural hydromagnesite is crushed with a jaw crusher to a particle size of less than 40mm, and then crushed with a Raymond mill to a particle size of less than 100 mesh, and the obtained hydromagnesite powder is added to the rotary kiln , keep the kiln temperature at 550°C, and the material stays in the kiln for 60 minutes. The magnesia coming out of the kiln is naturally cooled and crushed to 325 mesh with a mechanical pulverizer to obtain active magnesia with an iodine adsorption value of 98mgI / g and a magnesia content of 93.6%.

Embodiment 2

[0026] After beneficiation, the natural hydromagnesite is crushed with a jaw crusher to a particle size of less than 40mm, and then crushed to 100 mesh with a Raymond mill. The obtained hydromagnesite powder is added to a rotary kiln, and the kiln temperature is kept at 450°C. Stay in the kiln for 120 minutes. The magnesia coming out of the kiln is naturally cooled and crushed to 325 meshes with a mechanical pulverizer to obtain active magnesia with an iodine adsorption value of 119 mgI / g and a magnesia content of 91.8%.

Embodiment 3

[0028] After the natural hydromagnesite is beneficiated, it is crushed with a jaw crusher to a particle size of less than 40mm, and then crushed to 100 mesh with a Raymond mill. Stay in the kiln for 30 minutes. The magnesia coming out of the kiln is naturally cooled and crushed to 325 mesh with a mechanical pulverizer to obtain active magnesia with an iodine adsorption value of 81.8mgI / g and a magnesia content of 95.2%.

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

An active magnesium oxide production is carried out by baking broken hydromagnesite dynamic at 450-800deg.C for 30-120mins to obtain active magnesium oxide with 80-120mgl/g iodine adsorptive value.

Description

technical field [0001] The invention belongs to the field of inorganic chemical industry. It relates to the preparation technology of magnesium compounds, especially the production method of active magnesium oxide. Background technique [0002] Activated magnesium oxide is a new type of magnesium compound that has appeared in recent years. Due to its high surface energy and large specific surface area, it is a functional inorganic material and is widely used in wastewater treatment, plastic rubber modification, adhesive modification and flue gas desulfurization. Wait. [0003] The existing manufacturing methods of activated magnesia mainly include dolomite carbonization method, brine-ammonium carbonate method and magnesium hydroxide method. Although these methods have high product quality, the production cost of activated magnesia is relatively high due to the complicated process and large investment in equipment. ; and for the traditional light-burned magnesite obtained b...

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): C04B2/10
Inventor 董广前王洁
Owner CHINA NAT OFFSHORE OIL CORP
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