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Technology for preparing baking-free brick from iron tailings

A technology of unburned bricks and iron tailings, which is applied in the direction of manufacturing tools, clay preparation equipment, sustainable waste treatment, etc., can solve the problems of environmental damage, safety hazards, and occupation of cultivated land, so as to ensure the strength of the later stage, improve the strength, and be good. The effect of uniformity

Inactive Publication Date: 2016-12-21
明光市凯旋新型建材厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large number of iron tailings piled up not only caused serious damage to the environment, but also occupied a large amount of cultivated land, bringing huge safety hazards to the people around the tailings pond

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of technology for preparing unburned bricks from iron tailings, comprising the following steps:

[0032] (1) Pre-mixing

[0033] Weigh iron tailings, fly ash, cement and cement mortar, first iron tailings are stirred in mixer for 50s, then add fly ash and cement and stir for 50s, then add cement mortar and stir for 80s to obtain premix, The particle size of the iron tailings is less than 200 mesh proportion is 65%, the bulk density of the fly ash is 0.66g / cm 3 , with a tap density of 0.93 g / cm 3 ;

[0034] (2) Wheel milling and mixing

[0035] Then the premix is ​​added to the wheel mill for relaxation to form a mixture, and the time of the wheel mill is 50s;

[0036] (3) Final stirring

[0037] Then mix the mixture, water and admixture in a mixer, the stirring time is 1h, the admixture is a water reducer and an early strength agent, and the water reducer is a liquid polycarboxylic acid high Performance water reducer, the early strength agent is triethanola...

Embodiment 2

[0051] A kind of technology for preparing unburned bricks from iron tailings, comprising the following steps:

[0052] (1) Pre-mixing

[0053] Weigh iron tailings, fly ash, cement and cement mortar, first iron tailings are stirred in mixer for 60s, then add fly ash and cement and stir for 60s, then add cement mortar and stir for 90s to obtain a premix, The particle size of the iron tailings is less than 70%, and the bulk density of the fly ash is 0.67g / cm 3 , with a tap density of 0.94 g / cm 3 ;

[0054] (2) Wheel milling and mixing

[0055] Then the premix is ​​added to the wheel mill for relaxation to form a mixture, and the time of the wheel mill is 100s;

[0056] (3) Final stirring

[0057] Then mix the mixture, water and admixture in a mixer, the stirring time is 2h, the admixture is a water reducer and an early strength agent, and the water reducer is a liquid polycarboxylic acid high Performance water reducer, the early strength agent is triethanolamine;

[0058] ...

Embodiment 3

[0071] A kind of technology for preparing unburned bricks from iron tailings, comprising the following steps:

[0072] (1) Pre-mixing

[0073] Weigh iron tailings, fly ash, cement and cement mortar, first iron tailings are stirred in mixer for 70s, then add fly ash and cement and stir for 70s, then add cement mortar and stir for 100s to obtain premix, The particle size of the iron tailings is less than 200 mesh proportion is 75%, the bulk density of the fly ash is 0.68g / cm 3 , with a tap density of 0.95 g / cm 3 ;

[0074] (2) Wheel milling and mixing

[0075] Then the premix is ​​added to the wheel mill for relaxation to form a mixture, and the time of the wheel mill is 150s;

[0076] (3) Final stirring

[0077] Then mix the mixture, water and admixture in a mixer, the stirring time is 3h, the admixture is a water reducer and an early strength agent, and the water reducer is a liquid polycarboxylic acid high Performance water reducer, the early strength agent is triethanola...

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Abstract

The invention discloses a technology for preparing a baking-free brick from iron tailings. The packing density of raw materials after rolling treatment is increased,the compactness of a brick body is improved, the intensity of the baking-free brick is improved, the mixing effects of the raw materials can be the best by controlling rolling time, and besides, changes in particle size are inapparent; the raw materials have better uniformity under synergistic effects of stirring and mixing as well as rolling and mixing; and the development of the early strength of the baking-free brick can be accelerated through an appropriate quantity of additives, and the later strength of the baking-free brick can be guaranteed. The baking-free brick prepared by adopting the preparation technology has the advantages of being high in compression resistance and large in freezing resistance, and is large in market potential and broad in prospects.

Description

technical field [0001] The invention belongs to the production field of non-burning bricks, and more specifically, the invention relates to a process for preparing non-burning bricks from iron tailings. Background technique [0002] my country's iron tailings discharge and accumulation are huge. A large amount of iron tailings piled up not only caused serious damage to the environment, but also took up a lot of cultivated land and brought huge safety hazards to the people around the tailings pond. The use of iron tailings to prepare unburned bricks is not only conducive to the sustainable development of mining enterprises, but also can well implement the purpose of building a healthy, environmentally friendly, and resource-saving society in my country. Contents of the invention [0003] The problem to be solved by the present invention is to provide a process for preparing unburned bricks from iron tailings. [0004] In order to achieve the above object, the technical sc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B18/12B28B1/00B28B3/02B28C5/08B28B13/06B28B11/24
CPCB28B1/00B28B3/022B28B11/24B28B11/243B28B13/06B28C5/08C04B18/12C04B28/00C04B2201/50C04B18/08C04B22/002C04B24/24C04B24/122C04B14/06Y02W30/91
Inventor 崔旋
Owner 明光市凯旋新型建材厂
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