The effect of using ramming material

We all know that ramming materials are widely used in metallurgy, building materials, non-ferrous metal smelting, chemical industry, machinery and other manufacturing industries. Ramming materials refer to construction by ramming (manual or mechanical) methods, and under the heating effect of higher than normal temperature Hardened unshaped refractory material. It is made of refractory aggregate with certain gradation, powder, binder, admixture and water or other liquids. Stone, zirconium and silicon carbide-carbon refractory ramming materials. Today, I will talk about the application effect of ramming materials.

According to different blast furnace types and different material planning requirements, carbon ramming materials are mainly used for the gap between the carbon bricks at the bottom of the blast furnace and the sealing plate of the furnace bottom, between the carbon bricks and the cooling wall of the hearth, and for water cooling at the bottom of the furnace. The filling of the smooth cooling wall above the pipeline requires that the carbon ramming material after the ramming material has a certain strength and density, filling every corner and small gap, and reaching the place where no molten iron and gas leak. Requirements, and the thermal conductivity of the carbon ramming material should be basically consistent with the performance of the blast furnace hot carbon bricks and cooling stave, so as not to affect the life of the blast furnace, and then maintain the normal production of the blast furnace.

The problem often encountered in the application of carbon ramming materials is that the thermal conductivity of carbon ramming materials is generally low, which is not conducive to the rapid cooling of the blast furnace body, and then affects the service life. Therefore, carbon ramming materials with high thermal coefficient The new research and application of carbon fiber have market prospects. Whether it is adding additives in carbon ramming, changing the properties of materials by in-situ reaction at high temperature, or changing the structure of local materials from a design point of view, carbon can be made. When the working temperature of the ramming material layer increases, it reaches the thermal conductivity that matches the carbon brick and the cooling wall, so as to ensure the normal heat conduction, without damaging the overall construction structure, and then meet the requirements of improving the life of the blast furnace.