Ultra high power graphite resistor rod with 600mm diameter and method for producing the same

A graphite electrode and production method technology, applied in the direction of electric heating devices, electrical components, heating through discharge, etc., can solve the problems of high production costs and expensive imported raw materials, and achieve the effect of reducing production costs and improving economic benefits

Active Publication Date: 2009-10-07
KAIFENG CARBON CO LTD OF CHINA PINGMEI SHENMA GRP
View PDF0 Cites 36 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Needle coke, the main raw material for the production of ultra-high-power graphite electrodes in my country, has long been dependent on imports, and the imported raw materials are expensiv

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
  • Ultra high power graphite resistor rod with 600mm diameter and method for producing the same
  • Ultra high power graphite resistor rod with 600mm diameter and method for producing the same
  • Ultra high power graphite resistor rod with 600mm diameter and method for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The specific implementation mode of the present invention will be described in detail below in conjunction with the examples.

[0024] The product of the present invention uses 100% coal-based needle coke produced in Shanxi Hongte as a raw material. According to the microstructure of the raw material, the properties of true density, thermal expansion coefficient, tap density, and crushing strength, and the impact of the coal-based needle coke on The adsorption performance of the binder is designed to formulate ultra-high power graphite electrodes with large, medium and small particle sizes. The formula includes 20-30mm large-sized coal-based needle coke, 10-20mm medium-sized coal-based needle coke, and small-sized powder less than 200 meshes, as well as binder-modified pitch, additive stearic acid and Fe 2 o 3 Iron powder, raw and broken components, the composition is calculated by weight percentage: 20-30mm large-sized coal-based needle coke 40%, 10-20mm medium-sized...

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
Bulk densityaaaaaaaaaa
Flexural strengthaaaaaaaaaa
Elastic modulusaaaaaaaaaa
Login to view more

Abstract

The present invention provides an ultra high power graphite resistor rod with 600mm diameter and a method for producing the same. The method utilizes domestic coal series acicular coke with low true density in main physicochemical standard, high heat expansion coefficient and sulphur content for producing the large-size ultra high power graphite resistor rod with 600mm diameter. Volumetric density, bending strength, elastic modulus, electric resistivity and heat expansion coefficient of the product reaches the international standard after detecting which can solve difficult problem that the domestic coal series acicular coke can not produce the large-size ultra high power graphite resistor rod with 600mm diameter because of low true density in main physicochemical standard, high heat expansion coefficient and sulphur content, and can realize localization for raw material acicular coke of the large-size ultra high power graphite resistor rod, simultaneity, also can solve problem that the acicular coke depends on importation in a long time and has high cost for restricting expanding yield and scale of the ultra high power graphite resistor rod in carbon industry. The product can reduce cost and improve economic performance.

Description

technical field [0001] The invention relates to a graphite electrode and a production method thereof, in particular to an ultra-high power graphite electrode with a diameter of 600 mm and a production method thereof. Background technique [0002] Usually, the main raw material for the production of ultra-high power graphite electrodes is needle coke, which is further divided into petroleum-based needle coke and coal-based needle coke. Compared with petroleum-based needle coke, coal-based needle coke has the advantages of low price and low thermal expansion coefficient; the disadvantage is large expansion and cracking. Due to large bulges, the decrease in bulk density of the product will lead to a decrease in product strength, and even cause the electrode to be scrapped due to damage during the manufacture of the electrode. [0003] It is very difficult to produce large-scale ultra-high power graphite electrodes using coal-based needle coke, mainly because the sulfur and nit...

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): H05B7/085C01B31/04
Inventor 陈文来陈宗义谭炜洲
Owner KAIFENG CARBON CO LTD OF CHINA PINGMEI SHENMA GRP
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