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

Firebox structure of pusher plate kiln in calcining apparatuses for preparing alloy of vanadium-nitrogen continously

A technology of furnace structure and vanadium-nitrogen alloy, which is applied in the field of vanadium-nitrogen alloy, can solve the problems of extremely serious oxidation erosion of graphite lining and small oxidation erosion of graphite material in the inner cavity, so as to improve service life, prevent corrosion and ensure normal operation Effect

Active Publication Date: 2006-04-19
PANGANG GROUP VANADIUM TITANIUM & RESOURCES +1
View PDF1 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water vapor escapes in the temperature range of 400-700°C in the pusher kiln. Due to the low temperature in this area, the oxidation and erosion effect of water vapor on the graphite material in the inner cavity is very small; in the transition section of 850-1450°C, there is A lot of CO, CO 2 And a small amount of water vapor, the oxidation corrosion of the graphite lining is extremely serious (especially the erosion of the side wall is more serious). Graphite cannot be used as the lining material in this section, but due to the presence of a large amount of alkali metal elements, most other refractory materials are suitable. Not suitable for use in this temperature zone

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
  • Firebox structure of pusher plate kiln in calcining apparatuses for preparing alloy of vanadium-nitrogen continously
  • Firebox structure of pusher plate kiln in calcining apparatuses for preparing alloy of vanadium-nitrogen continously
  • Firebox structure of pusher plate kiln in calcining apparatuses for preparing alloy of vanadium-nitrogen continously

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Before the implementation of the present invention, corundum was used as the lining material for the inner lining of each temperature zone of the pusher kiln, and the heating element chamber was not isolated from the furnace. The service life of the pusher kiln was only about 25 days, and the replacement frequency of the heating element was 8.2 pieces / day, the power-off frequency of push plate kiln is 3.7 times / day.

Embodiment 2

[0027]Before the implementation of the present invention, the lining materials of the push plate kiln were made of graphite, and the heating element cavity in the 6-7 temperature zone was isolated from the furnace. The power-off frequency of push plate kiln is 2.6 times / day.

Embodiment 3

[0029] In the implementation of the technical solution of the present invention, the lining of the low-temperature section, the rear of the transition section and the high-temperature section of the push plate kiln are all made of graphite materials, and the side walls and tracks at the front of the transition section are made of high-purity fused magnesia bricks and top bricks. For graphite bricks up to 200mm thick, the heating element cavity of each temperature zone is isolated from the furnace, and the furnace height of the 8 temperature zone is 80mm lower than that of other temperature zones. After the implementation, the service life of the pusher kiln has been increased to 220-240 days, the frequency of replacement of heating elements has been reduced to 0.8 pieces / day, and the frequency of power failure is 1-2 times / month.

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 internal cavity structure of the push bar kiln used for preparing VN alloy is composed of internal cavity, cover plate, side wall and tracks. A push bar kiln is longitudinally and sequentially composed of the low-temp segment with 5 temp regions, the transition segment with 4 temp regions, the high-temp segment with 7 temp regions, and the cooling segment consisting of natural cooling region and forced cooling region. It features that different but proper refractories are chosen for different temp regions. Its internal cavity has 3 separated channels. The central channel is the kiln cavity and two side channels are isolated heating element ones.

Description

technical field [0001] The invention belongs to the technical field of vanadium-nitrogen alloys, in particular to a furnace structure of a pusher kiln for calcining equipment for continuously producing vanadium-nitrogen alloys in industry. Background technique [0002] In the existing method for preparing vanadium-nitrogen alloy, there is no mention of the internal cavity structure of the calcination equipment and the materials used in the internal cavity of the equipment. "Production method of vanadium-nitrogen alloy" patent application (application number: 01139886.8, publication number CN1422800A,) the calcining equipment adopted is a pusher kiln, and the key factors affecting the service life of the pusher kiln and heating elements are the kiln body cavity structure and the The main reason for the materials used in the inner chamber of the equipment is: water vapor, CO, CO in kiln chambers in different temperature zones 2 and low boiling point alkali metal elements (Na ...

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): C01B21/06F27B9/22
Inventor 周家琮谢屯良孙朝晖邓孝伯李瑰生
Owner PANGANG GROUP VANADIUM TITANIUM & 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