How to use chromium oxide green correctly to improve the performance of refractory bricks?

April 03, 2023

Basic Chrome Sulphate 4

Chromium Oxide Green is a pigment widely used in ceramics, glass, ceramic tiles, and other materials. It is also an important additive used in the production of refractory materials. In the production of refractory materials, the correct use of chromium oxide green can improve the performance of refractory bricks. Here are some suggestions for the correct use of chrome oxide green:

Control the addition amount: Chromium oxide green is a powerful colorant, and its addition amount must be strictly controlled. Excessive addition can make the brick color too dark, which affects the thermal reflectivity and corrosion resistance of the brick.

Reasonable selection of particle size: The particle size of chromium oxide green will affect its dispersion and uniformity in refractory materials. Generally speaking, Luoyang Zhengjie Chrome Oxide Green with finer particle size has better dispersion, but too fine particles will also reduce its high-temperature resistance.

Control the sintering temperature: When making refractory bricks, the sintering temperature will affect the color and dispersion of chromium oxide green. Excessive sintering temperature can lead to darker color and decreased dispersion of chrome oxide green, which affects the performance of refractory bricks.

Keep dry: Chrome oxide green has strong moisture absorption, and if stored improperly, it may absorb moisture from the air, affecting its performance. Therefore, when using chromium oxide green, it should be kept dry and minimize the time of contact with air.

Consider compatibility with other additives: When making refractory materials, it is often necessary to add multiple additives simultaneously, and their compatibility needs to be considered. For chromium oxide green, it can be used together with some metal oxides such as aluminum, magnesium, and calcium, but it should not be used together with some acidic oxides such as silicate.

Attention to safety issues: Chromium oxide green is a toxic chemical. When using it, attention should be paid to safety issues, and inhalation and contact with skin and eyes should be avoided as much as possible. Before use, it is necessary to understand its safety and operating procedures in detail, and take corresponding protective measures.

Adjust the ratio according to the specific application: Different refractory materials have different requirements for chrome oxide green, so in specific applications, the ratio needs to be adjusted according to the actual situation. In general, the optimal addition amount and particle size can be determined through experiments.

In summary, the correct use of chromium oxide green can significantly improve the performance of refractory materials, but safety issues need to be paid attention to during the use process, and adjustments should be made according to the specific application situation.

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