Olivine is a mineral variety of high temperature and silicate mineral group which contains Mg and Fe ions and has color changing property ranging from black to green. It has a glassy brilliance. The olivine group minerals form a series of solid solutions in which the Forsterite and Fayalite tip components are mixed endlessly.

Today, the most used area of ​​olivine is the iron and steel industry. In this industry, olivine is used as a melter and slag regulator in blast furnaces. In blast furnaces, iron ore and coke are used for steel production. However, these raw materials are not purely mature.

For this reason, the raw materials entering the blast furnace must be mixed with the melting point and the slag. Here, the first planet has a major role as the melted olivine in the era required. With the deposition of olivine, the slag increases the MgO value and therefore the fluidity also increases. Another advantage is that the high MgO content of olivine allows the slag viscose to move without depending on the composition of the high furnace materials.

There is also a considerable contribution to the sintering process of olivine. Thus, when used in olivine sinter plants, it reduces the degree of sintering so that the consumption of coke used as an energy source decreases and the capacity of the sinter is increased by increasing the hardness of the sinter. This process will also ensure that the iron minerals are dispersed homogeneously in the furnace, thus facilitating the removal of impurities from the environment.

The olivine ore is produced from Köyceğiz region in which we have very large olivine deposit. Olivine is crushed and sieved in our facilites at the request of iron and steel industry.


In many iron and steel factories in Turkey and abroad, the smelting of scrap iron is carried out in electric arc furnaces. The liquid steel melted in electric arc furnaces is transferred to the ladle furnace through the purging holes called EBT drill located in the lower part of the furnace. In general, these EBT holes are filled with olivine-made EBT filler sands until the casting is completed.

Where the quality of the EBT filler is of great importance, it is anticipated that the sand will flow automatically when the casting hole is opened. If EBT filled sand made from poor quality material, it will cause sintering and will not allow self opening of the wedge and requires intervention with oxygen. This causes to lose time. If this adverse situation continues, it reduces the number of daily castings, causing to suffer a significant amount of economic damage. The high release rate of the EBT filler sand produced in our facilities eliminates all these problems. Thanks to the production line and expertise of the team.

Kömürcüoğlu EBT Filler Sand Properties:

– Has a free opening rate of over 98%. It has high MgO values ​​and can withstand temperatures up to 1760 ºC.

– The grain structure of EBT filling sand produced by special production technique is angular and cubic. This feature allows the EBT filler fluid to open without sintering by imparting fluidity.

– The high quality of EBT filler makes it possible to save time and labor.

– Particle distributions of our products in all sizes used as EBT filler sand; are the most accurate ranges proven by many years of experience. The particles interfere with each other, preventing the gap between the particles. In this way, the slag penetrates into intergranular spaces and is prevented from causing sintering.

– EBT filler sand production is under continuous quality control inspection. It is Immediately intervented in case of a possible problem.

The above mentioned grain sizes are standard values and different grain sizes can be produced upon request.


Tundish sand is used in safety lining which is placed between working lining and outer lining in plate type trenches. Here Tundish sand is a refractory material resistant to temperatures up to 1760 ° C, thus providing heat insulation based on the high temperature of the working lining. Tandish protects the outer lining from the effects of high temperature. This minimizes maintenance-repair costs that may occur in the safety lining.

Moreover, the fact that Tandish sand has a high degree of sintering and less than 2% of the water within it makes it easier to dismantle the tundish plates, saving time and labor cost.

The above mentioned grain sizes are standard values and different grain sizes can be produced upon request.