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Fine-particle iron tailing unfired water permeable brick and preparation method thereof

A technology of iron tailings and permeable bricks, which is applied to ceramic products, other household utensils, household utensils, etc., can solve the problems of less research, environmental hazards, and large discharge of iron tailings, and achieve good water retention and water permeability , The preparation process is short, and the effect of environmental benefits

Pending Publication Date: 2021-08-13
HUATIAN ENG & TECH CORP MCC +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country's iron tailings discharge is large, but the utilization rate is low. The comprehensive utilization rate of tailings is less than 15%, which is far lower than the comprehensive utilization level of other bulk solid wastes, which has brought serious harm to the environment.
At present, the research on the production of permeable bricks from iron tailings in the patent literature focuses on the preparation of non-fired permeable bricks or non-fired permeable bricks from coarse-grained tailings, and less research on the preparation of non-fired permeable bricks from fine-grained iron tailings

Method used

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  • Fine-particle iron tailing unfired water permeable brick and preparation method thereof
  • Fine-particle iron tailing unfired water permeable brick and preparation method thereof
  • Fine-particle iron tailing unfired water permeable brick and preparation method thereof

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Embodiment 1

[0030] A method for preparing fine-grained iron tailings permeable bricks, comprising the following raw materials in terms of mass percentage: 80 parts of fine-grained iron tailings, 20 parts of commercial tailings curing agent, 10 parts of water-based epoxy resin emulsion, and 10 parts of slag , 5 parts of sodium silicate.

[0031] In the present invention, the chemical composition of the fine-grained iron tailings is represented by SiO 2 、Al 2 o 3 , Fe 2 o 3 , MgO, and the total content of the two oxides reached more than 83% of the total. The specific chemical composition is shown in Table 1. The main mineral composition in iron tailings is calcite (CaCO 3 ), hematite (Fe 2 o 3 ), quartz (SiO 2 ), clinolite ((Mg 5 Al)(SiAl) 4 (OH) 8 )Wait. The average particle size of fine-grained iron tailings is 75 microns, and the particle size range is 20-140 microns.

[0032] Table 1 Iron tailings chemical composition (wt%)

[0033]

[0034] Put the fine-grained iron t...

Embodiment 2

[0038] A method for preparing fine-grained iron tailings permeable bricks. In terms of mass percentage, raw materials are prepared: 85 parts of fine-grained iron tailings, 15 parts of commercial tailings curing agent, 5 parts of vinyl acetate-ethylene copolymer emulsion, and 10 parts of fly ash parts, steel slag 5 parts.

[0039] Put the fine-grained iron tailings into a drying oven at 105°C for drying. After drying, the iron tailings are ball milled to produce powder materials. Mix the iron tailings powder materials with 15% commercial tailings curing agent to make a diameter of 6.0mm The ceramsite samples were obtained from the iron tailings ceramsite after curing in a 90°C hydrothermal curing box for 3 days.

[0040] The ceramsite is broken into 3mm-5mm particle size iron tailings ceramsite body sample, and the composite cementitious material is prepared by using vinyl acetate-ethylene copolymer emulsion, fly ash and steel slag, and the iron tailings pottery is prepared in ...

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Abstract

The invention provides a fine-particle iron tailing unfired water permeable brick and a preparation method thereof. The unfired water permeable brick is prepared by taking fine-particle iron tailings as a main raw material, and the unfired water permeable brick product has good water permeability and mechanical strength. The iron tailing unfired water permeable brick is prepared through the modes of tailing granulation, surface modification and molding maintenance, resource utilization and high-dosage utilization of fine-particle iron tailings are achieved, and compared with the prior art, the preparation process is short in flow and simple in method, has environmental benefits, social benefits and economic benefits, and is suitable for industrial production. The unfired water permeable brick is good in compressive strength, water-retaining property and water permeability, and meets the index requirements specified in the standard.

Description

technical field [0001] The invention belongs to the technical field of utilization of general industrial solid waste resources, and in particular relates to a non-fired permeable brick of fine-grained iron tailings and a preparation method thereof. Background technique [0002] With the continuous advancement of my country's urbanization process, the demand for municipal building materials has also continued to increase, especially with the continuous improvement of new urban construction standards such as sponge cities, the demand for functional building materials has increased accordingly. Permeable brick is a new type of green and environmentally friendly building material, which has the characteristics of good wear resistance and water permeability, high frost resistance and salt and alkali resistance, high flexural strength and compressive strength, and is widely used in courtyards, parks, squares, gardens Other municipal public places are under construction. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/26C04B26/04C04B38/00C04B111/20C04B111/40
CPCC04B28/26C04B26/04C04B2201/50C04B2111/40C04B2111/2038C04B2111/00284C04B18/12C04B24/281C04B18/141C04B2103/0068C04B38/0041C04B18/08C04B18/142
Inventor 夏溢程寒飞张毅樊传刚刘克权朱红生
Owner HUATIAN ENG & TECH CORP MCC
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