A kind of binder, the gun clay containing the binder and the preparation method of the gun clay

Abstract

The invention provides a binder, a blasthole clay containing the binder, and a method for preparing the clay gun clay. The components of the binder material are uniformly mixed according to the following weight ratio: silica sol: 60-80 parts; glucose: 5 ~17 parts; Glycerin: 1~10 parts. The bonding agent of the present invention is environmentally friendly and pollution-free, and the anhydrous taphole clay prepared by using the bonding agent has a high volume density, a small sintering shrinkage rate, and strong resistance to slag and iron erosion, and the environmental protection performance is obviously improved.

Description

technical field [0001] The invention relates to a refractory material, in particular to a binder, a gun clay containing the binder and a preparation method of the gun clay. Background technique [0002] Gun clay is a kind of refractory material used to seal the tap hole. Currently, the commonly used gun mud mainly includes two types: water gun mud and anhydrous gun mud; among them: [0003] Water taphole mud is mixed with water during preparation. Due to the large amount of clay in the ingredients, its plasticity is relatively good, but the water taphole clay has low bulk density, poor sintering performance, high shrinkage rate, and slag iron erosion resistance. Difference [0004] In view of the above-mentioned defects of water taphole cement, the current research is mainly to improve from the following aspects: [0005] Aiming at the defects of low thermal conductivity, slow temperature rise, and wet taphole phenomenon in tapped iron, the paper "Development of Blast Furn...

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Problems solved by technology

[0012] In recent years, Europe has also developed a new carbon-containing resin binder. The apparent porosity of the gun clay with the modified phenolic resin as the binder is 25-32%, and its flexural strength is 3.2-4.5MPa at a high temperature of 1450°C. At 3800m where the top pressure reaches 0.15MPa 3 The use on the blast furnace has achieved good results, but its erosion resistance and erosion resistance are poor;

[0013] Invention patent ZL 201210445805.8 discloses a binder for large-scale blast furnace clay, which uses silicone resin, furan resin, and melamine-formaldehyde resin as a curing component, and uses hydrogenated terphenyl as a synergist. It has high plasticity and low The reduction of the curing rate and the curing rate of the binder is beneficial to improve the fluidity of the gun mud at high temperature, so the gun mud is not easy to agglomerate in the mud gun and has good opening performance, and it is resistant to high temperature molten iron erosion and has little pollution to the environment, but Still produce pollutants such as aldehydes;

[0020] Although the use of the above two methods can indeed improve the performance of anhydrous taphole clay to a certain extent, and can also increase environmental protection to a certain extent, since the modified tar or its substitutes still belong to macromolecular organic binders, It will inevitably produce carcinogens or pollutants such as benzopyrene or aldehydes, and the pollution and damage to the environment and workers in front of the furnace cannot be fundamentally resolved.

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