Thermosetting red mud block and preparation method thereof

Abstract

The invention discloses a thermosetting red mud block and a preparation method thereof and belongs to the technical field of recycling of iron-containing solid waste resources in iron and steel enterprises. The thermosetting red mud block comprises the following raw materials in percentage by weight: 65 to 75 percent of steelmaking oxygen converter gas recovery sludge (OG), 1.5 to 2.5 percent of bentonite and the balance of scale; and the thermosetting red mud block comprises the following final chemical components in percentage by weight: 1 to 5 percent of MgO, 0 to 0.5 percent of P2O5, 65 to 85 percent of iron oxide, 5 to 15 percent of CaO, 2 to 8 percent of SiO2, 0 to 0.5 percent of S, 1 to 3.5 percent of Al2O3, 1 to 3.5 percent of MnO, and the balance of inevitable impurities. The compressive strength of the thermosetting red mud block is 100 to 200kg / cm<2>. The thermosetting red mud block and the preparation method thereof have the advantages that the defects of complexity of processing process and high preparation cost in the prior art can be overcome, the solid waste produced in a production process in iron and steel enterprises can be recycled, and the ore consumption of a converter can be avoided. Moreover, the thermosetting red mud block also has the characteristics of reducing environmental pollution, along with high quality and the like.

Description

Technical field [0001] The invention belongs to the technical field of recycling and utilization of iron-containing solid waste resources in iron and steel enterprises, and in particular provides a thermosetting red mud block and a manufacturing method thereof, and is suitable for the recycling and reuse of OG mud and oxide scale in converters of iron and steel enterprises. Background technique [0002] The converter OG mud is the product of wet dust removal in the converter steelmaking production. The oxide scale includes the oxidation product that reacts with oxygen on the surface of the steel billet at a high temperature before and after rolling, and the oxidation product produced during the cutting process of the steel billet. Iron-containing materials; the iron content of OG mud is about 50%, the iron content of oxide scale is about 65%, OG mud is also accompanied by a certain amount of CaO and SiO 2 , The binary alkalinity is about 3, and both materials have good use value f...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of thermosetting red mud block and its manufacture method, has overcome the deficiency that processing procedure is loaded down with trivial details in the prior art, and manufacturing cost is often higher; Can recycle the solid waste that steel enterprise produces in the production process, simultaneously Alternative to converter ore consumption