Baking-free brick made of nickel slag and method for preparing baking-free brick

Abstract

The invention discloses a baking-free brick made of nickel slag and a method for preparing the baking-free brick. The baking-free brick comprises, by weight, 70-90 parts of nickel slag powder, 10-30 parts of mineral waste residue powder, 10-12 parts of cement, 8-10 parts of water glass, 0.05-0.2 part of diethanolisopropanolamine and 18-21 parts of water. The method for preparing the baking-free brick includes steps of weighing the nickel slag powder, the mineral waste residue powder, the water glass, the cement, the diethanolisopropanolamine and the water according to proportions; quickly uniformly stirring and mixing the nickel slag powder, the mineral waste residue powder, the water glass, the cement, the diethanolisopropanolamine and the water with one another to obtain slurry, then placing the slurry into molds of tablet presses and carrying out compression molding to obtain required green bricks of the baking-free brick made of the nickel slag; carrying out steam curing on the green bricks to obtain the baking-free brick made of the nickel slag. The baking-free brick and the method have the advantages that the nickel slag can be utilized, processes for the baking-free brick are simple, and the baking-free brick is high in stability.

Description

technical field [0001] The invention belongs to the field of industrial solid waste recycling, and in particular relates to a nickel slag unburned brick and a preparation method thereof. Background technique [0002] Nickel slag is an industrial solid waste slag produced in the process of smelting nickel metal. It is a kind of granulated slag formed after a series of physical operations such as water quenching on part of the melt. According to the actual production, if the flash furnace smelting method is adopted, about 6-16 tons of nickel slag need to be discharged for every ton of nickel produced. At present, the stockpile of nickel slag has exceeded 100 million tons. As a kind of industrial solid waste, nickel slag has problems such as large discharge, complex composition, poor grindability, and low reactivity, and there is no good utilization method for the time being. The resulting environmental pollution has attracted widespread attention from the society. . [0003]...

AI Technical Summary

Problems solved by technology

At present, the utilization rate of nickel slag is low. Applying it to the preparation of unburned bricks after processing not only solves the problem of nickel slag stacking, but also realizes turning waste into treasure, which meets the strategic requirements of sustainable development of the building materials industry.

Images