Unfired environment-friendly brick prepared from stripped soil in mine and preparation method of unfired environment-friendly brick

An environmentally friendly brick and mine technology, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as soil problems, high transportation costs, harm to the surrounding environment, etc., to achieve simple process flow, low cost, Suitable for promotion and application

Active Publication Date: 2021-07-16
苏州中材非金属矿工业设计研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the processing method for this part of the mine stripping soil is stacking and landfilling. However, there are the following problems in this way: (1) the transportation cost generated by the stockpiling of the mine stripping soil is extremely high, which brings great costs to the enterprise. (2) The accumulation of a large amount of stripped soil from mines will destroy the surface vegetation, cause serious soil problems, and directly endanger the surrounding environment; (3) if the accumulated stripped soil encounters long-term heavy rainfall, it is very likely to induce Natural disasters such as mountain torrents, mudslides and landslides directly endanger people's lives and property safety
As a result, existing approaches present a range of economic, social, and environmental problems

Method used

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  • Unfired environment-friendly brick prepared from stripped soil in mine and preparation method of unfired environment-friendly brick
  • Unfired environment-friendly brick prepared from stripped soil in mine and preparation method of unfired environment-friendly brick
  • Unfired environment-friendly brick prepared from stripped soil in mine and preparation method of unfired environment-friendly brick

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment provides a method for preparing non-burning environmentally friendly bricks using mine stripping soil, including the following steps:

[0029] Step S1, raw material preparation: Crushing the collected limestone and sieving to obtain coarse sand aggregate; mixing the prepared coarse sand aggregate with limestone mine stripping soil at a weight ratio of 1:4 to form sandy soil Mixture;

[0030] Step S2, ingredient batching: mix and age the sand-soil mixture, 42.5-grade Portland cement, and lime in a weight ratio of 20:3:2;

[0031] Step S3, mixing and stirring: put the raw materials into the cement mortar mixer, add 10wt% water, and stir for 3-5 minutes;

[0032] Step S4, compression molding: put the mixture in the mold, vibrate easily to make the surface of the mixture in the mold smooth, then put the mold into a constant pressure testing machine, set the compressive strength to 20MPa, and maintain a constant pressure 10s, after the end, take out the mol...

Embodiment 2

[0036] This embodiment provides a method for preparing non-burning environmentally friendly bricks using mine stripping soil, including the following steps:

[0037] Step S1, raw material preparation: crush the collected limestone and sieve to obtain coarse sand aggregate; mix the prepared coarse sand aggregate with limestone mine stripping soil at a weight ratio of 2:3 to form sandy soil Mixture;

[0038] Step S2, ingredient batching: mix and age the sand-soil mixture, 42.5-grade Portland cement, and lime in a weight ratio of 20:3:2;

[0039] Step S3, mixing and stirring: put the raw materials into the cement mortar mixer, add 10wt% water, and stir for 3-5 minutes;

[0040] Step S4, compression molding: put the mixture in the mold, vibrate easily to make the surface of the mixture in the mold smooth, then put the mold into a constant pressure testing machine, set the compressive strength to 20MPa, and maintain a constant pressure 10s, after the end, take out the mold and re...

Embodiment 3

[0044] This embodiment provides a method for preparing non-burning environmentally friendly bricks using mine stripping soil, including the following steps:

[0045] Step S1, raw material preparation: crush the collected limestone and sieve to obtain coarse sand aggregate; mix the prepared coarse sand aggregate with limestone mine stripped soil at a weight ratio of 3:2 to form sandy soil Mixture;

[0046] Step S2, ingredient batching: mix and age the sand-soil mixture, 42.5-grade Portland cement, and lime in a weight ratio of 20:3:2;

[0047] Step S3, mixing and stirring: put the raw materials into the cement mortar mixer, add 10wt% water, and stir for 3-5 minutes;

[0048] Step S4, compression molding: put the mixture in the mold, vibrate easily to make the surface of the mixture in the mold smooth, then put the mold into a constant pressure testing machine, set the compressive strength to 20MPa, and maintain a constant pressure 10s, after the end, take out the mold and rel...

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Abstract

The invention discloses a preparation method of an unfired environment-friendly brick prepared from stripped soil in a mine. The preparation method comprises the following steps: crushing collected limestone stone, and conducting screening to obtain coarse sand aggregate; mixing the prepared coarse sand aggregate with stripped soil in a limestone mine to obtain a sandy soil mixture; subjecting cement, lime and the sandy soil mixture to mixing, stirring and aging; putting the above raw materials into a cement mortar stirrer, adding 8 wt%-10 wt% of water, and conducting stirring for 3-5 minutes; putting a mixture obtained in the previous step into a mold, conducting gentle vibration to enable the surface of the mixture in the mold to be smooth, putting the mold into a constant-pressure testing machine, setting compressive strength to be 15-20 MPa, keeping the mold under constant pressure for 10 s, taking out the mold after constant-pressure keeping is finished, and releasing the pressure; and demolding a test piece, and curing the test piece for 7 days under indoor natural conditions. The invention also relates to the unfired environment-friendly brick prepared by using the preparation method. The invention provides a feasible path for resource utilization of the stripped soil in mine, namely preparation of the unfired environment-friendly brick.

Description

technical field [0001] The invention relates to the technical field of new building materials, in particular to a burn-free environmentally friendly brick prepared by using stripped soil from mines and a preparation method thereof. Background technique [0002] During the mining process, a large amount of exfoliated soil will be produced. The main components of this type of exfoliated soil are non-metallic mineral components such as quartz, kaolinite, montmorillonite, and mica. After a long period of weathering, there are basically no large particles, smaller than The proportion of 2-micron particles reaches 80% to 90%. As the mining height decreases, the formed mine stripping soil also increases greatly. [0003] In the prior art, the processing method for this part of the mine stripping soil is stacking and landfilling. However, there are the following problems in this way: (1) the transportation cost generated by the stockpiling of the mine stripping soil is extremely hig...

Claims

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Application Information

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IPC IPC(8): C04B28/12C04B18/12
CPCC04B28/12C04B18/12C04B2201/50C04B2201/32C04B14/28C04B7/02Y02W30/91
Inventor 胡名卫于阳辉潘卫赖玮程飞飞张明
Owner 苏州中材非金属矿工业设计研究院有限公司
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