Welcome to the official website of Ooishi Hashikunihiro refractory Co., Ltd.!

1514426150131595.png

  13940740409

18641721806

"Customer first, honest management"

WITH OUR SINCERITY AND SWEAT, IN ORDER TO DEVELOP AND CREATE A BETTER FUTURE!

News Center

Product Center

Words

Contact us

Contact: Zhang general

Contact phone: 13940740409

Contact: Stone Manager

Contact phone: 18641721806

WeChat: shyjps

Mailbox: zljshine@163.com

Fax: +86-0417-6992298

Address: Zhenxing Road, Dashiqiao, Liaoning

Web site: www.ghref.cn



Effect of particle size of magnesia chrome brick, magnesia brick wholesale of magnesia MgO-C refractory oxidation rate

Your current location: Home >> News >> technical knowledge

Effect of particle size of magnesia chrome brick, magnesia brick wholesale of magnesia MgO-C refractory oxidation rate

Release date:2018-01-30 Author: Click:

Effect of particle size of magnesia chrome brick, magnesia brick wholesale of magnesia MgO-C refractory oxidation rate

Microstructure has a certain effect on the oxidation rate of magnesia carbon refractories under low pressure such as ladle, converter and decarburization plant. Therefore, it is very helpful to study the microstructure of these magnesia carbon refractories to improve their oxidation resistance. In the Japanese foundry and forging company, the oxidation rate of cubic carbon blocks of magnesia carbon refractories was precisely determined by phase equilibrium. The relationship between the maximum particle size of magnesia and the oxidation rate of magnesia carbon refractories was studied.

Experiment with cubic specimens (20 x 20 x 20mm) provided by Kurosaki harima. The chemical composition and particle size distribution of the sample are as follows.

镁砖批发

    The experiments were carried out under the oxygen partial pressure of 3.7 x 102Pa and 2.1 x 104Pa respectively. The temperature is between 1200 and 1400. The oxidation process is carried out according to the local reaction of a simulated oxidation process, and the oxidation rate is analyzed by the weight loss of the sample. The experimental results show that oxygen diffuses through the pores in the decarburization layer. When the partial pressure of oxygen is 2.1 * 104Pa, the effective diffusion rate of oxygen in M5-3 (magnesia maximum particle size 3.0mm) is slightly lower than that in M5-1 (the largest particle size of magnesia is 1.0mm). The effective diffusivity of oxygen in M5-3 and M5-1 decreased significantly at 1400 C. The dense layer was found in the decarburization layer by optical microscope. It may be because the pore channel of M5-3 is more tortuous than that of M5-1, and M5-3 sample is easier to form dense layer than M5-1 sample.


Related tags:镁砖批发

Recent browse:

Welcome to our message
Please enter the message content, we will contact you as soon as possible。
Full name
Full name
Telephone
Telephone
mailbox
mailbox
address
address