Light roasting MgO suspension calcination production process and device

A suspension calcination and production device technology, applied in the field of industrial production of light-burned MgO, can solve the problems of narrow calcination temperature adjustment range, affecting the stable operation of the system, and single product activity, so as to achieve good product quality, reduce kiln shutdown maintenance times, and dust The effect of low emission concentration

Active Publication Date: 2018-07-10
ZHENJIANG SOBUTE NEW MATERIAL CO LTD +1
View PDF14 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem solved by the present invention is to overcome the disadvantages of the light-burned magnesia roasting equipment in the prior art, such as the narrow range of calcination temperature adjustment, single product activity, and easy occurrence of material collapse under abnormal working conditions, which affects the stable operation of the system. To provide a light-calcined MgO suspension calcination production device and its production process for precise partition calcination of light-calcined MgO with different activities

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
  • Light roasting MgO suspension calcination production process and device
  • Light roasting MgO suspension calcination production process and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Open the four burner burners of the first combustion system 14 and the two burner burners arranged symmetrically at 180° in the second combustion system 15, and close the remaining two burner burners of the second combustion system 15 and the third combustion burner. System 16, adjust the gas supply to stabilize the temperature field in the suspension calciner at 750°C. The magnesium carbonate powder is fed into the gas outlet pipeline of the secondary cyclone preheating cylinder at a feeding speed of 92t / h, and the magnesium carbonate is produced after being preheated by the primary, secondary, third and fourth cyclone preheating cylinders respectively. The material temperature is preheated to 480°C, and then fed into the suspension calciner, which is calcined and decomposed at a temperature of 750°C in the suspension calciner to form MgO clinker powder, which is separated by a five-stage cyclone and fed into the suspension cooling system for cooling and separated step ...

Embodiment 2

[0052] Turn on the four burner burners of the first combustion system 14, the two burner burners arranged symmetrically at 180° in the second combustion system 15, and the two burner burners arranged symmetrically at 180° in the third combustion system 16, Close the remaining two pairs of burners in the second combustion system 15 and the third combustion system 16, adjust the gas supply, and stabilize the temperature field in the suspension calciner at 850°C. The magnesium carbonate powder is fed into the gas outlet pipe of the secondary cyclone preheating cylinder at a feeding speed of 90t / h, and the magnesium carbonate is produced after being preheated by the primary, secondary, third and fourth cyclone preheating cylinders respectively. The material temperature is preheated to 500°C, and then fed into the suspension calciner, which is calcined and decomposed at a temperature of 850°C in the suspension calciner to form MgO clinker powder, which is separated by a five-stage c...

Embodiment 3

[0054] Turn on the four burner burners of the first combustion system 14, the four burner burners of the second combustion system 15, and the two burner burners arranged symmetrically at 180° in the third combustion system 16, and close the third combustion For the remaining two burners in the system 16, adjust the gas supply to stabilize the temperature field in the suspension calciner at 970°C. The magnesium carbonate powder is fed into the gas outlet pipeline of the secondary cyclone preheating cylinder at a feeding speed of 87t / h, and the magnesium carbonate is produced after being preheated by the primary, secondary, third and fourth cyclone preheating cylinders respectively. The material temperature is preheated to 530°C, and then fed into the suspension calciner, which is calcined and decomposed at a temperature of 970°C in the suspension calciner to form MgO clinker powder. Finally, after being cooled by a sleeve-type water-cooled screw conveyor, it is fed into the fin...

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 light roasting MgO suspension calcination production process and device. The device comprises a raw material cabin, a five-stage cyclone preheating tube, a suspension calcination furnace, three sets of combustion systems, a three-stage suspension cooling cylinder, a two-stage fluidized bed, a waste gas treatment device, a sleeve type water cooling spiral conveyor, a finished product cabin, a fan, a turning plate valve, a temperature detector and the like. The defects that the existing light calcination MgO calcination equipment has the narrow calcination temperature regulation range, the activity of the produced light calcination MgO product is single, collapse materials under the abnormal work conditions cannot be timely treated, the stable operation of the wholesystem is influenced, and the like are overcome. The combustion systems are arranged in the height direction and the radial direction of the suspension calcination furnace; the two-stage fluidized bed is arranged at the discharging opening of the suspension calcination furnace; the problem of the material collapse phenomenon occurring under the abnormal work conditions can be solved; meanwhile, the precise different-region calcination of the MgO with different activities can be realized; the popularization and application of the light calcination MgO in the building industry can be facilitated.

Description

technical field [0001] The invention relates to a light-burned MgO industrial production technology, in particular to a light-burned MgO suspension calcination production process and device utilizing magnesite. Background technique [0002] Light-burned MgO is produced from magnesite (MgCO 3 ) after calcining and grinding. Magnesite (MgCO 3 )’s theoretical decomposition temperature is 560°C. When the temperature is lower than 560°C, magnesite cannot decompose, resulting in raw burning. When the temperature is higher than 560°C, magnesite begins to decompose, and the MgO produced has a small particle size and high activity. As the calcination temperature increases, MgO becomes denser and less active. [0003] Roasting of light-burned MgO is a chemical reaction process, MgCO 3 Decomposes into MgO and CO when heated 2 , Both over-burning and under-burning will lead to a decrease in the activity of MgO, or even loss of activity. [0004] The activity of MgO is directly rel...

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
CPCC04B2/102
Inventor 刘加平蔡玉良张守治刘渊
Owner ZHENJIANG SOBUTE NEW MATERIAL 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