Method for preparing crystallized building materials from tailings

A technology for crystallization and building materials, applied in the field of preparation of crystallized building materials, can solve the problems of high process energy consumption and products with pores, etc., achieve broad market prospects, reduce production costs, and avoid the effects of high process energy consumption

Active Publication Date: 2014-06-18
承德华富玻璃技术工程有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

Although the sintering and crystallization method can obtain crystallized glass with natural stone texture and spot effect, it has disadvantages such as high energy consumption in the process and pores in the product.

Method used

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Embodiment

[0019] Assuming that there are iron tailings with the following composition in the local area, see Table 1, based on this composition, in order to maximize the use of tailings to reduce the cost of raw materials, the designed crystal phase is wollastonite, and the designed crystal cluster size is 2-5mm. With F as the crystal nucleating agent, the crystal clusters are spherical, and the plate appears in the form of natural marble spots after polishing. Table 2 is the composition of the designed crystallized glass building material.

[0020] Table 1

[0021] SiO 2

[0022] Table 2

[0023] SiO 2

[0024] Introduce iron tailings up to 85%, and the crystallization process is as follows: heat preservation at 600°C for 20 minutes; heat at 5°C / min to 670°C for 40 minutes; heat at 4°C / min to 930°C for 60 minutes; heat at 15°C / min Cool down to 620°C for 20 minutes; cool down to room temperature at 10°C / min. After cutting, grinding and polishing, a black marbl...

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Abstract

The invention relates to a method for preparing crystallized building materials. The crystal components of building materials are designed according to the tailing components, the crystal components are one or a mixture of two or more of wollastonite, diopside, amphibole, olivine, spinel, feldspar, spodumene and mullite stone crystalline phases. The crystallized glass having natural stone texture and spot effect, which is difficult to obtain by a direct crystallization method, is prepared by the method disclosed by the invention and the problems of high energy consumption and high rate of porosity of the product in a sintering crystallization method are solved. Furthermore, production costs can be greatly reduced by using 70-99% of the tailings to achieve the purpose of turning waste into treasure. Either aesthetics or performance indicators of crystallized building materials prepared by the invention are better than those of the natural stone, cost is only 1/3-1/2 of that of the natural stone, and the sales prices of crystallized building materials are comparable to domestic imported natural marbles, thus having broad market prospects.

Description

technical field [0001] The invention relates to a method for preparing crystallized building materials, in particular to a method for using tailings to prepare crystallized building materials with natural stone texture and spot effects. Background technique [0002] Tailings are one of the products of sorting operations in mineral processing, and the part with the lowest content of useful target components is called tailings. Under the current technical and economic conditions, further sorting is no longer suitable. However, with the development of production, science and technology, useful target components may have economic value for further recycling. Tailings are not completely useless waste, but often contain components that can be used for other purposes and can be comprehensively utilized. Realizing no waste discharge is the need of fully utilizing mineral resources and protecting the ecological environment. If it is used as tailings, glass-ceramics can be prepared...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/04C03C10/02C03C10/12C03B32/02
Inventor 侯雅军王宁江鑫赵文娟秦诚
Owner 承德华富玻璃技术工程有限公司
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