High-volume high-strength nickel slag brick and its preparation method

Abstract

The invention relates to a high-admixing amount high-strength nickel slag brick and a preparation method of the high-admixing amount high-strength nickel slag brick. The high-admixing amount high-strength nickel slag brick is prepared from the following components in parts by mass: 50-75 pars of water quenching nickel slag, 12-25 parts of air cooling nickel slag, 0-6 parts of sands, 6-9 parts of cement, a water reducer accounting for 0.01-0.08% by mass of the cement and 7-10 parts of water. According to the high-admixing amount high-strength nickel slag brick, the consumption of the nickel slag is great and reaches over 75%, and the recycling and environmental protective benefits of the nickel slag are obvious. The nickel slag brick prepared is relatively high in strength, satisfies the requirement of an MU20 non-sintered brick, and can be used as an effective substituent for a sintered brick, so that the energy consumption and the production cost are lowered, and the brick has an obvious energy-saving and consumption-reducing benefit. The brick is simple in moulding and maintaining process, easy for scaled production and broad in market prospect.

Description

technical field [0001] The invention relates to a large-volume high-strength nickel slag brick and a preparation method thereof, belonging to the technical field of industrial solid waste recycling. Background technique [0002] Nickel is a strategic material, known as "industrial vitamin", and has a wide range of uses in national defense and civilian industries. Therefore, the rapid growth of nickel consumption in my country has resulted in the production of a large amount of nickel slag. The water-quenched nickel slag and air-cooled nickel slag produced by pyrometallurgy and extraction of nickel metal from laterite nickel ore are mainly composed of SiO2, MgO, Fe2O3, Al2O3, CaO, etc. Among them, the water-quenched nickel slag only contains a small amount of magnesium Olivine and SiO2 crystalline phases, and the rest are in the form of glassy substances, which have potential pozzolanic activity after ball milling, while air-cooled nickel slag is relatively hard and still has...

AI Technical Summary

Problems solved by technology

Patent CN103408277A uses water-quenched nickel slag as the main raw material, together with industrial waste slag, lime, cement and appropriate amount of water, and after molding, steam curing and natural curing to prepare a new type of nickel slag brick, but the strength of nickel slag brick is generally low , the strength difference of each proportion is also large, it is difficult to replace the fired brick with higher strength for application

[0004] Therefore, there is currently no one that can consume a large amount of nickel slag, but also prepare high-strength nickel slag bricks and its process method to replace the shortcomings of the "no sticking" post-sintered brick market.

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