Composite tailing non-fired and non-steamed building block brick and preparation method thereof

Abstract

The invention discloses a composite tailing non-fired and non-steamed building block brick and a preparation method thereof. The brick comprises the following raw materials in parts by weight or volume: 50-300 parts of tailing and 3-30 parts of cement; and at least two components are selected from the active wastes such as fly ash, coal gangue, shale slag, alkaline residue, carbide slag, chemical gypsum and the waste residue of metallurgical industry to be mixed with the raw materials. The preparation method comprises the following steps: mixing to stir, compressing and shaping, performing natural curing or utilizing the solar heaing hydrating maintenance to prepare the composite tailing building block brick. By adopting the preparation method of the invention, the single performances of the tailings and slags can be changed, thus the product can have higher strength and quality owning to the interaction of materials; the technology does not adopt firing and steaming, the cost is low; different sizes of solid bricks, perforated bricks, hollow blocks, floor tiles, grass planting bricks, roadside bricks and artistic rails can be prepared by changing the mould; and various harmful slags such as tailings can become good, the Chinese development direction of the comprehensive utilization of resources is satisfied and the brick of the invention has development and application prospect.

Description

technical field [0001] The invention relates to a burn-free brick, in particular to a composite tailings burn-free and steam-free block brick and a preparation method thereof, belonging to the field of new building materials. Background technique [0002] In the deep processing of metal and non-metal mining, a large amount of tailings sand and gravel powder and industrial waste residues are produced. These solid wastes accumulate day by day and are huge in quantity. They destroy the ecological environment, occupy a large amount of land, and cost a lot of treatment. Heavy burden. According to relevant data, my country's mining solid waste such as metal tailings has accumulated nearly 10 billion tons, and it is still exceeding 1×10 8 Tons of the rate of growth, serious pollution of industrial production areas and surrounding areas of the environment. At present, the utilization rate of tailings waste in my country is less than 10%. The country is making great efforts to rese...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is: the present invention provides a composite tailings non-burning and non-steaming block brick and its preparation method, which focuses on solving the four existing problems of poor quality of non-fired products, high cost, large cement content, and complicated process that must be autoclaved. technical problem