Environment-friendly acid furnace lining dry vibration material

Abstract

The invention relates to the technical field of acid furnace lining refractory materials and in particular relates to an environment-friendly acid furnace lining dry vibration material which comprisesthe following raw materials in parts by mass: 15-20% of waste silica brick particles with a particle size of 5-8mm, 8-15% of waste silica brick particles with a particle size of 3-5mm, 18-25% of waste silica brick particles with a particle size of 1-3mm, 25-33% of waste silica brick particles with a particle size of 0-1mm, 25-30% of natural quartz sand powder of 325 meshes, 1-2% of B2O3 and 0.1-0.3% of a special sintering agent, wherein the mass percentages of main chemical components of the raw materials are as follows: greater than or equal to 97.5% of SiO2, less than or equal to 0.5% of Al2O3, less than or equal to 0.6% of Fe2O3, less than or equal to 0.8% of CaO, less than or equal to 0.16% of MgO, less than or equal to 0.09% of TiO2, less than or equal to 0.1% of an alkali metal oxide and less than or equal to 0.5% of H2O. Regenerated waste silica brick particles are adopted as a raw material, and meanwhile, the natural quartz powder and the sintering agent are added, so that thesintering strength can be improved, the thermal expansion coefficient is small, the service life of a furnace lining is greatly prolonged, meanwhile, waste silica brick resources of a large scale inChina are reasonably utilized, the raw material cost can be reduced, and recycling and utilization of resources can be achieved.

Description

technical field [0001] The invention relates to the technical field of acid furnace lining refractory materials, in particular to an environment-friendly acid furnace lining dry vibrating material. Background technique [0002] Coreless induction furnace is a kind of melting equipment with rapid development and wide application, which is widely used in the casting production of steel and non-ferrous alloys. How to improve the service life of the induction furnace lining and reduce the cost of the charge is a common concern of the foundry industry. There are many factors that affect the service life of the furnace lining, including the performance of the lining material, the technical level of the operator, the equipment quality of the induction furnace, the execution degree of the on-site melting process, and the quality of raw materials. Among them, the performance of the lining material is the primary factor affecting the life of the lining, including the particle size di...

AI Technical Summary

Problems solved by technology

At present, the acid dry vibrating material of domestic induction furnace basically uses natural quartz sand as raw material. Quartz sand has many crystal forms and complex changes, and it will produce a huge volume expansion during the heating process. Only adding a certain amount of sintering agent can alleviate this problem. However, the addition of a large amount of sintering agent often reduces the high-temperature refractory performance of the material, which has become the main reason for affecting the life of the induction furnace lining