Dry material using waste magnesia carbon brick as main raw material and preparation method of dry material

Abstract

The invention discloses a dry material using a waste magnesia carbon brick as a main raw material and a preparation method of the dry material. The dry material comprises the following components of, by mass, 95-97 wt. %, 2.3-3.9 wt. % of modified resins, 0.1-0.3 wt. % of urotropin, and 0.5-0.9 wt. % of sodium borate. The dry material uses the waste magnesia carbon brick as the raw material for preparing the dry material so that resource consumption is reduced, and costs are reduced due to the fact that the waste magnesia carbon brick is less than 400.00 yuan / ton while traditional magnesite or forsterite is 1950.00 yuan / ton on average, and costs of the raw material can be saved by over 79%. The waste magnesia carbon brick is treated at high temperatures, tundish baking time is saved by 3 hours, energy consumption is saved, and baking costs are reduced by over 50%. The modified resins are used as binding agents so that nose choking smoke and poisonous harmful gases can not be produced. The dry material has the advantages of being energy-saving, emission-reducing, environment-friendly and low in cost, and according to the dry material, problems of poor intensity at normal temperatures and poor slag resistance at high temperatures of the dry material are solved.

Description

【Technical field】 [0001] The invention relates to the field of metallurgy, in particular to the improvement of a dry material component and a preparation method thereof. 【Background technique】 [0002] Dry material is widely used in metallurgical industrial kilns, thermal equipment and structures, and is the preferred material for the working lining of tundishes for converter steelmaking. At present, dry materials are produced with magnesia or forsterite as the main raw material and solid phenolic resin as the binder. [0003] The existing dry materials have the following disadvantages: [0004] 1. The main raw material components are magnesia or forsterite, which consume a large amount of mineral resources, which is not conducive to energy saving and environmental protection, but also has a high cost, which is not conducive to the promotion and application of dry materials. [0005] 2. Magnesia or forsterite needs to be baked at high temperature for more than 3 hours, whi...

AI Technical Summary

Problems solved by technology

[0004] 1. The raw material components are mainly magnesia or forsterite, which consume a lot of mineral resources, which is not conducive to energy saving and environmental protection, but also has a high cost, which is not conducive to the promotion and application of dry materials

[0005] 2. Magnesia or forsterite needs to be baked at high temperature for more than 3 hours, which consumes a lot of energy, which is not conducive to energy saving and environmental protection, and affects production efficiency

[0006] 3. The product uses solid phenolic resin binder, which emits a large amount of toxic and harmful gases during baking and heating, pollutes the environment, is not conducive to clean steelmaking and environmental protection, and brings health hazards to operators and construction personnel