Refractory brick with low coefficient of linear expansion and preparation method thereof

Abstract

The invention discloses a refractory brick with a low coefficient of linear expansion and a preparation method thereof. The refractory brick is prepared from, by weight, 44-56 parts of white cement, 16-24 parts of desulfurized petroleum coke residues, 31-43 parts of granite pegmatite tailings, 4-8 parts of maleic anhydride-acrylic copolymer, 10-15 parts of aluminum titanate, 24-38 parts of asbestos tailings, 14-23 parts of foundry waste sand, 20-30 parts of yellow phosphorus slag, 5-10 parts of lithium silicate, 15-20 parts of petalite, 17-29 parts of crystal stone waste, 13-24 parts of boiler ash, and 6-9 parts of alginic acid triethanolamine salt. By adding the raw materials including the desulfurized petroleum coke residues, the aluminum titanate and the foundry waste sand in the formla, the coefficient of linear expansion of the refractory brick can be remarkably lowered, the obtained refractory brick has high strength and low volume expansion at a high temperature, the brick is protected against swelling and cracking phenomena, and the service life of the refractory brick is prolonged.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

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AI Technical Summary

Benefits of technology

This patented technology involves crushing or grinding these residues into small particles called sands (silicone dioxide) before mixing them with an alkali solution like sodium hydrogen carbonate to make it harden without losing its effectiveness during use. These fine powders are used instead of traditional mineral fillers when making ceramics because they increase their durability while also reducing thermal conductivity compared to conventional methods. Additionally, this process allows for reuse of various types of industrial wastes containing different components including silicon oxides, iron sulfates, calcium pyrochlorites, lithophoranes, plaster rocks, gypsum, feldspathiaux oil, tars, bitumen, coal tar pitch, charcoal dust, and others. By combining these ingredients together, the resulting refractorial material becomes stronger than usual due to less volatility and easier handling.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving refractories that resist extreme conditions like high temperaturities while also being able to maintain good performance under severe environmental factors including exposure during use over time without losing its strength due to cracks caused from external forces applied thereto.