Method to prepare full-body tiles by iron tailings

Abstract

The invention relates to a method to prepare full-body tiles by iron tailings, which belongs to the field of comprehensive utilization of building materials and resources. The method is characterized in that during the preparation of full-body tiles, partial iron resources in iron tailings are recycled, iron contents in raw materials of the full-body tiles are reduced, and amount of the iron tailings used in the full-body tiles is increased and accounts for up to 98.4% of the raw materials of the full-body tiles; a composite dyeing formulation is formed by adding a certain amount of metallic oxide or substances containing metallic oxide used as dyeing assistants to metal in the iron tailings to prepare the full-body tiles with good performance, and the dyeing assistants are a certain amount of MnO2, Cr2O3, NiO and CuO or are raw mineral materials containing one or a plurality of Mn, Co, Ni and Cu. The invention achieves the double effect of increasing recycling rate of resources and producing high value added products, reduces dependence of ceramics production on high-quality raw mineral materials, needs no colorant, and reduces production cost of full-body tiles.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of building materials and resources, and relates to a method for preparing full-body bricks by using iron tailings, and simultaneously recovers iron resources during the preparation process of full-body bricks. Background technique [0002] Tailings are the waste after mineral processing. In China, there are more than 400 large tailings ponds, and the stockpiled metal tailings exceed 6 billion tons, of which iron tailings account for about 1 / 3. Most of these discharged tailings are stored in tailings ponds, which have become an important factor restricting the sustainable development of the mining industry and endangering the mining area and the surrounding ecological environment. This inevitably makes the discharge and disposal of tailings one of the urgent problems to be solved in mines. . [0003] Iron tailings is a composite mineral raw material, in addition to containing a small amo...

AI Technical Summary

Problems solved by technology

Chinese patent application No. 200710032792.0 discloses a production method of using iron tailings to prepare colored blank glazed antique tiles. It is to replace part of the glaze and blanks of the original antique glazed tiles with waste iron tailings raw materials and add them to the glazed antique tiles. In brick blanks and fabrics, the addition ratio is 20-45% of glaze and blanks. Although this method greatly reduces energy consumption and improves resource utilization, in the glazing process, it needs to be based on the blank body. Expansion coefficient, preparation of matching high hiding power make-up clay and top glaze, the process is not easy to control

Chinese patent application No. 88109712.8 discloses a kind of iron ore tailings powder glazed brick and its production method, which has the characteristics of simple process and low energy consumption, but needs to add 35-65% clay, and the amount of tailings is not high

The production of a large number of full-body bricks not only consumes a lot of non-renewable high-quality mineral resources, but also consumes a lot of energy in the production and preparation process, which also has a certain impact on the environment

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