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Environmentally friendly ceramic ganged brick prepared from copper tailings and preparation method thereof

A technology of copper tailings and clear water bricks, applied in the field of building materials, can solve the problems of waste of land resources, occupation of farmland, pollution of mining areas and surrounding areas, etc., achieve the effects of less fuel consumption, energy saving, and expansion of uses

Inactive Publication Date: 2019-06-07
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the tailings pool itself is a direct source of pollution. On the one hand, under the action of natural wind, a large amount of dust is raised, and the dust contains a large amount of toxic and harmful heavy metal elements, thereby causing pollution to the mining area and surrounding areas; on the other hand, the tailings Mine stacking occupies a large amount of farmland, resulting in a waste of land resources
At the same time, tailings dam breaks are likely to cause huge economic losses and life safety accidents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Utilize copper tailings to prepare the method for environment-friendly ceramic clean water brick, comprise the steps:

[0027] 1) Billet preparation: by weight percentage: 60% of copper tailings, 20% of kaolin, 10% of talc, 5% of potassium feldspar, and 5% of albite feldspar, accurately weighed, ball milled in a ball mill for 10 hours, and passed through a 250-mesh sieve. Add water to mix and stir; the amount of water added is 20% of the total weight of the above-mentioned powder; then use a vacuum mud mill to refine the mud, stale for 24 hours, and get a billet for later use;

[0028] 2) Forming: put the blank into the mold, use the plastic pressure method to shape the brick, apply a pressure of 7MPa, and hold the pressure for 5s to obtain the brick;

[0029] 3) Preparation of glaze slurry: by weight percentage: 15% of copper tailings, 30% of low-temperature frit (including 15% of borax, 15% of quartz), 20% of potassium feldspar, 15% of calcite, 10% of dolomite, 2% of ...

Embodiment 2

[0035] Utilize copper tailings to prepare the method for environment-friendly ceramic clean water brick, comprise the steps:

[0036] 1) Billet preparation: by weight percentage: 80% of copper tailings, 5% of kaolin, 8% of talc, 5% of potassium feldspar, 2% of albite, accurately weighed, ball milled in a ball mill for 10 hours, passed through a 250-mesh sieve, Add water to mix and stir; the amount of water added is 22% of the total weight of the above-mentioned powder; then use a vacuum mud mill to refine the mud, stale for 36 hours, and obtain a blank for future use;

[0037] 2) Forming: put the blank into the mold, use the plastic pressure method to shape the brick, apply a pressure of 8 MPa, and hold the pressure for 5 seconds to obtain the brick;

[0038] 3) Preparation of glaze slurry: by weight percentage: copper tailings 25%, low-temperature frit 26% (including borax 6%, quartz 20%), potassium feldspar 15%, calcite 15%, dolomite 10%, cooked talc 2 %, kaolin 2%, zinc ox...

Embodiment 3

[0044] Utilize copper tailings to prepare the method for environment-friendly ceramic clean water brick, comprise the steps:

[0045] 1) Billet preparation: by weight percentage: 70% of copper tailings, 10% of kaolin, 10% of talc, 6% of potassium feldspar, 4% of albite feldspar, accurately weighed, ball milled in a ball mill for 11 hours, and passed through a 250-mesh sieve , add water and mix and stir; the amount of water added is 22% of the total weight of the above-mentioned powder; then use a vacuum mud mill to train the mud, stale for 48 hours, and get a billet for subsequent use;

[0046] 2) Forming: put the blank into the mold, use the plastic pressure method to shape the brick, apply a pressure of 8 MPa, and hold the pressure for 5 seconds to obtain the brick;

[0047] 3) Preparation of glaze slurry: by weight percentage: copper tailings 20%, low-temperature frit 26% (including borax 6%, quartz 20%), potassium feldspar 15%, calcite 15%, dolomite 10%, cooked talc 3 %, ...

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Abstract

The invention belongs to the technical field of construction materials, and specifically relates to an environmentally friendly ceramic ganged brick prepared from copper tailings and a preparation method thereof. The preparation method comprises following steps: (1) preparing following raw materials in percentage by weight: 60 to 80% of copper tailings, 5 to 20% of kaolin, 8 to 12% of talcum, and5 to 15% of a high temperature flux, and preparing a green brick; (2) preparing glaze slurry from following components in percentage by weight: 15 to 25% of copper tailings, 25 to 30% of low temperature frit, 15 to 20% of potash feldspar, 15 to 17% of calcite, 10 to 12% of dolomite, 2 to 4% of calcined talcum, 2 to 4% of kaolin, 2 to 4% of zinc oxide, and 3 to 5% of spodumene; and (3) painting theglaze slurry on the green brick, drying, and burning. The environmentally friendly ceramic ganged brick is mainly prepared from copper tailings, a novel approach is provided for recovering copper tailings, the method has an important meaning for environment protection; and moreover, the ganged brick has the advantages of low sintering temperature, high strength, good regularity, and beautiful appearance.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to an environment-friendly ceramic clean-water brick prepared from copper tailings and a preparation method thereof. Background technique [0002] Copper tailings, also known as copper tailings, are fine powder sand left after copper ore is crushed and selected. At present, for the treatment of copper tailings, most of them are to build tailings ponds for centralized storage. However, the tailings pool itself is a direct source of pollution. On the one hand, under the action of natural wind, a large amount of dust is raised, and the dust contains a large amount of toxic and harmful heavy metal elements, thereby causing pollution to the mining area and surrounding areas; on the other hand, the tailings Mine stacking occupies a large amount of farmland, resulting in a waste of land resources. At the same time, tailings dam breaks are likely to cause huge economic losses...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132C04B33/13C03C8/14C04B33/34
CPCY02P40/60
Inventor 徐晓虹吴建锋刘星张亚祥
Owner WUHAN UNIV OF TECH
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