Iron tailing unfired water permeable brick and preparation method thereof

A technology of iron tailings and permeable bricks, applied in ceramic products, other household appliances, sustainable waste treatment, etc., to achieve the effects of environmental protection, durability and wear resistance, and low energy consumption

Inactive Publication Date: 2020-09-25
ANSTEEL GRP MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the condition of non-burning technology, there are few reports on the direct use of micron iron tailings to make permeable bricks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 (Performance indicators must be added after each example: non-fired permeable bricks with good water permeability, the prepared unfired permeable bricks have a compressive strength of 30.5~35.5MPa, and a water permeability coefficient of 1.0×10 -2 ~4.5×10 -2 cm / s,)

[0021] An iron tailings unfired permeable brick, including the following raw materials:

[0022] 150kg of PO42.5R grade cement (134 parts), 500kg of iron tailings (446 parts), 300kg of 3-8mm grade gravel (268 parts), 50kg of desulfurized ash and 120kg of water (107 parts).

[0023] The production process of the above-mentioned permeable bricks includes the following steps:

[0024] S1. Raw material batching; import iron tailings, crushed stones, cement and desulfurized ash into the mixer according to 150kg of cement, 500kg of iron tailings, 300kg of crushed stones and 50kg of desulfurized ash, stir for 1min-5min under dry conditions, and then Slowly add 120kg of water under agitation, and the p...

Embodiment 2

[0033] A permeable brick comprising raw materials by weight of:

[0034] 200kg of PO42.5R grade cement, 500kg of iron tailings, 250kg of 3-8mm grade gravel, 50kg of desulfurized ash and 120kg of water.

[0035] The production process of the above-mentioned permeable bricks includes the following steps:

[0036] (1) Prepare various materials;

[0037] (2) Stirring of raw materials: import iron tailings, crushed stones, cement, and desulfurized ash into the agitator, stir for 2 minutes under dry conditions, and then slowly add water under agitation to ensure that no agglomeration occurs during the stirring process of the materials. Add water and stir for 5 minutes;

[0038] (3) Filling and molding: Calculate the weight of the required material, put it into the mold, and quickly pressurize it through the press, with a pressure of 10KN, so as to avoid vibration and slurry extraction during this process;

[0039] (4) Natural maintenance molding.

[0040] The prepared fire-free ...

Embodiment 3

[0042] A permeable brick comprising raw materials by weight of:

[0043] 150kg of PO42.5R grade cement, 550kg of iron tailings, 250kg of 3-8mm grade gravel, 50kg of desulfurized ash and 120kg of water.

[0044] The production process of the above-mentioned permeable bricks includes the following steps:

[0045] (1) Prepare various materials;

[0046] (2) Stirring of raw materials: import iron tailings, crushed stones, cement, and desulfurized ash into the agitator, stir for 2 minutes under dry conditions, and then slowly add water under agitation to ensure that no agglomeration occurs during the stirring process of the materials. Add water and stir for 5 minutes;

[0047] (3) Filling and molding: calculate the required material weight according to the bulk density, put it into the mold, and quickly pressurize it through the press, with a pressure of 10KN, to avoid vibration and extraction during this process;

[0048] (4) Natural maintenance molding.

[0049] The prepared ...

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Abstract

The invention discloses an iron tailing unfired water permeable brick and a preparation method thereof. The iron tailing unfired water permeable brick is prepared from the following raw materials in parts by weight: 100-250 parts of cement, 400-600 parts of iron tailings, 200-300 parts of gravels, 40-100 parts of desulfurized fly ash and 100-120 parts of water. The process of the unfired water permeable brick is simple, the utilization rate of tailing solid waste is high, the problem that a large number of tailings are accumulated in a concentrating mill is solved, the water permeable brick for the ground surface can be provided for urban construction, and the prepared unfired water permeable brick is light in weight, good in strength, high in durability and abrasion resistance, good in crack resistance and toughness, low in cost, small in energy consumption and free of pollution to the environment.

Description

technical field [0001] The invention belongs to the technical field of resource reuse of iron tailings, and in particular relates to an iron tailings non-fired permeable brick using whole tailings as a raw material and a preparation method thereof. Background technique [0002] With the massive mining of iron ore resources, the discharge of tailings is increasing day by day. Due to the limitation of utilization technology, iron tailings are usually stored and disposed of, which not only occupies land, but also causes environmental and safety problems. At present, the accumulated amount of iron tailings stockpiled in my country is as high as 5 billion tons, accounting for more than 1 / 3 of the total stockpiled iron tailings, and is growing at a rate of more than 500 million tons per year. Iron tailings have become the solid waste with the largest emission and the lowest comprehensive utilization rate in my country, and its comprehensive utilization rate is less than 10%, whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B38/00C04B111/20C04B18/12
CPCC04B28/144C04B2111/00284C04B2111/20C04B2111/2038C04B2201/50C04B7/02C04B14/02C04B18/12C04B38/0041Y02W30/91
Inventor 许灏高江赵虹陈健郭客孙建峰
Owner ANSTEEL GRP MINING CO LTD
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