High-strength baking-free brick prepared from electric furnace ferronickel slag and preparation method of high-strength baking-free brick

Abstract

The invention provides a high-strength baking-free brick prepared from electric furnace ferronickel slag and a preparation method of the high-strength baking-free brick. The method comprises the following steps: step 1, with ferronickel slag, cement, anhydrous gypsum and calcium hydroxide as raw materials, fully and uniformly mixing the raw materials by using a powerful mixer, wherein the ferronickel slag should be finely ground to allow the specific surface area of the ferronickel slag to reach 450-550 m<2> / kg, a mass part ratio of the cement to the ferronickel slag in the raw materials is 4:1 to 5: 1, the mass of the anhydrous gypsum is 1-2% of the total mass of the cement and the ferronickel slag, and the mass of the calcium hydroxide is 1-2% of the total mass of the cement and the ferronickel slag; step 2, adding water into the uniformly-mixed raw materials, carrying out sufficient stirring, and then putting the formed mixture into a grinding tool for vibration compression moldingto obtain a green body; and 3, carrying out room temperature maintenance on the green body in a closed workshop, keeping the brick body wet, and completing the maintenance to obtain the high-strengthbaking-free brick. According to the method, the baking-free brick with high strength can be prepared through a simple process, metallurgical solid waste ferronickel slag is effectively utilized, andenvironmental pollution is reduced.

Description

technical field [0001] The invention belongs to the fields of industrial solid waste treatment and building material production, and in particular relates to a high-strength burn-free brick prepared by using electric furnace nickel-iron slag and a preparation method thereof. [0002] technical background [0003] In recent years, with the rapid growth of my country's economy and industrial development, a large amount of solid waste has also been produced. These solid wastes not only encroach on valuable land resources, but also bring serious damage to soil, water and the atmosphere. pollution and destruction. The random discharge of untreated industrial solid waste will pose a huge threat to our ecological environment. The secondary utilization of solid waste resources is an inevitable requirement for the green and sustainable development of today's society. The secondary utilization of solid waste resources can not only provide resource guarantee for industrial development,...

AI Technical Summary

Problems solved by technology

Compared with other metallurgical slags, ferronickel slag has the characteristics of large amount of slag discharge, high difficulty and high cost of valuable metals, resulting in low utilization rate and becoming a major problem in the treatment of ferronickel slag

At present, many domestic enterprises can only stockpile and landfill them, seriously occupying land and causing a series of environmental problems

Images