A kind of method that utilizes copper tailings to prepare high-strength cellular glass material

Abstract

Belonging to the field of comprehensive utilization of industrial solid waste resources and environmental protection, the invention provides a method for preparation of high strength foam glass material with copper tailings. The method includes: mixing copper tailings, steel slag, quartz sand, a fluxing agent and other raw materials, and then conducting high temperature melting, water quenching, glass frit grinding, sintering and other processes so as to obtain the high strength foam glass material. According to the invention, the industrial solid waste accounts for 80%-95% of the total weight of the raw materials, therefore the method is an approach for large-scale resource utilization of industrial solid waste, and can realize "green" utilization of copper tailings. Also, the preparation process adopts a pore-forming agent foaming way, the process is relatively simple, and the preparation process is easy to control, thus being beneficial to realization of industrial popularization and application. The used raw materials are all inorganic materials, and are accord with the national grade A non-combustible standard. The prepared foam glass material has superior performance, compressive strength up to 60MPa, and flexural strength up to 20MPa.

Description

Technical field: [0001] The invention relates to a method for preparing a high-strength foam glass material by utilizing copper tailings, and belongs to the fields of comprehensive utilization of industrial solid waste resources and environmental protection. Background technique: [0002] With the rapid development of industrialization, the production and stockpiles of industrial solid wastes in my country have been increasing, among which the stockpiles of industrial tailings have reached about 6 billion tons, and are still increasing at a rate of about 300 million tons of new emissions every year. At present, mines have strengthened the development of tailings reprocessing technology to recover associated metal or non-metal resources, but most of the "secondary" tailings are still stockpiled, occupying land resources and polluting the surrounding environment. Utilizing modified tailings as raw materials for building materials, or as filling materials for mining goafs are t...

AI Technical Summary

Problems solved by technology

Patent Publication No. CN102924113A proposes a method for preparing porous ceramic adsorption or filter materials from copper tailings. Patent Publication No. CN103030341A and Patent Publication No. CN100591635C provide methods for preparing porous materials with low thermal conductivity and heat preservation using copper tailings. These methods are technically feasible, but the preparation process uses a pore-forming agent, and it is difficult to control the foaming pores of the pore-forming agent during the high temperature process.

Patent announcement number CN102674883B provides a method for preparing foamed ceramic insulation boards using copper tailings. The method is foamed during the molding process, and the pore structure is relatively easy to control. Strict control of the firing system requires very high requirements for the kiln, and the production cycle is long and energy consumption is high, so it is not conducive to the promotion and application of technology