China Chromite sand ladle well filler

Product Description:

Chromium drainage sand for ladle filler/chromite sand 20-70#

Chromite-base filler Sand, also known as chromite sand, is a special sand for foundry. It is a natural spinel dominated by chromite. After crushing, grinding and sieving, it is divided into prescribed grain size and is suitable for sand for molding (core-making). Chromium ore sand can be divided into two grades according to chemical composition, first grade Cr2O3 (> 45%) and second grade Cr2O3 (> 35%). 

THE ADVANTAGE OF CHROMITE SAND

1. Heated Volume Stability

2. High thermal conductivity

3. Strong alkali resistance

4. Solid-phase sintering, non-sticking sand

Overall the chromite ore in the world, the one from South Africa are of the best quality level. So HAIXU Abrasive import original chromite ore from there and refine it to better purity to 46% Cr2O3.

Technical Data Sheet:

Application:

Chromite Sand in the steel industry(Chromite sand 20-70#)

In steel production, Chromite Sand is used as well filler for protection of the sliding gate in large steel holding ladles.

Chromium drainage sand is made of chromite sand and additives. It has the advantages of high specific gravity, good fluidity, high melting point, and no excessive sintering. In the chromium drainage sand, when the added amount of chromite is greater than 60%, the chromite is continuously distributed, and this distribution helps to form a continuous sintered layer. At high temperature, FeO in the chromite reacts to desolvate and form secondary spinel, which causes the volume of the sintered layer to change and cracks. In this way, when the sliding plate is opened, the unsintered drainage sand under the nozzle will flow out quickly, and the cracks in the sintered layer will rapidly expand, The sintered layer is completely destroyed under the action of the static pressure of molten steel, so that the purpose of automatic pouring can be achieved. Chromium drainage sand is used by most large steel mills, accounting for about 30% of the entire drainage sand for ladle, especially for refined ladle.

1. We are a manufacturer, which can control the cost easier than trade companies also can give you an answer more quickly.
2. As a manufacturer, we know much in technique and can give you more support in technique problems.
3. Professional and experienced service team, specialized in abrasive production, more than 10 years.
4. Our products are complete in specifications of various sizes.
5. We enjoy a good reputation in the customers in domestic and overseas markets.
6. Large production capacity, short lead time of products.
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