Non-sintered brick based on tailing solution, and manufacturing process

A technology of non-sintered bricks and manufacturing process, which is applied in the direction of manufacturing tools, clay preparation devices, forming indenters, etc., which can solve the problems of low production efficiency, long maintenance period, and low strength, and achieve increased strength, reduced porosity, and improved water retention. the effect of

Inactive Publication Date: 2019-12-20
XIAMEN MEIYI GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tailings not only waste mineral resources, but also occupy land resources. At the same time, long-term accumulation is easy to pollute water sources, air, etc., posing a serious threat to the ecological environment and the safety of people's lives and properties.
[0003] Traditional bricks are made by sintering. In recent years, non-sintered bricks have been studied, but the existing non-sintered bricks generally have relatively low strength, long maintenance period and low production efficiency.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 40 parts of tailings solution, 28 parts of lightweight aggregate, 25 parts of curing agent, 5 parts of integrating agent, 2 parts of reinforcing agent, of which the tailings are copper tailings and the chemical composition is SiO 2 58%, Al 2 O 3 32%, CuO5%, solid content of tailings solution 53%. The lightweight aggregate is ceramsite, the curing agent includes 20 parts of ordinary silicon cement, 8 parts of sulphur aluminum cement, 2 parts of anhydrous anhydrite, the integrating agent is anionic 8 million polyacrylamide, and the reinforcing agent is lithium carbonate. The density of the made non-sintered brick is 720kg / m 3 , 3d strength is 12MPa, 28d strength is 29MPa.

Embodiment 2

[0044] 45 parts of tailings solution, 25 parts of lightweight aggregate, 23 parts of curing agent, 4 parts of integrating agent, 3 parts of reinforcing agent, of which the tailings are iron tailings, and the chemical composition is SiO 2 65%, Al 2 O 3 26%, Fe 2 O 3 6%, the solid content of tailings solution is 61%. The lightweight aggregate is expanded perlite, the curing agent includes 7 parts of ordinary silicon cement, 13 parts of sulphur aluminum cement, 3 parts of anhydrous anhydrite, the integrating agent is anionic 6 million polyacrylamide, and the reinforcing agent is lithium sulfate. The density of the finished non-sintered brick is 750kg / m 3 , 3d strength is 16MPa, 28d strength is 26MPa.

Embodiment 3

[0046] S1: Add tailings solution, lightweight aggregate, curing agent, integrator, and intensifier to the mixer, and stir for at least 3 minutes until the slurry reaches a non-liquid state to obtain an intermediate, of which 54 parts of tailings solution, tailings are manganese Tailings, chemical composition SiO 2 62%, Al 2 O 3 19%, MnO8%, solid content of tailings solution is 45%, 20 parts of lightweight aggregate is coal gangue, 22 parts of curing agent, including 10 parts of silicon cement, 10 parts of sulphur aluminum cement, 2 parts of anhydrous anhydrite, 3 parts of integrating agent, 8 million anion polyacrylamide, 1 part of strengthening agent lithium carbonate, stir all the materials for 5 minutes,

[0047] S2: Filling the intermediate body into a mold, and pressing the intermediate body into a molding by an indenter matched with the mold, specifically, vibration pressing molding;

[0048] S3: Move the mold to the curing kiln. The temperature of the curing kiln is 45℃ for ...

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PUM

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Abstract

The invention discloses a non-sintered brick based on a tailing solution, and a manufacturing process. The non-sintered brick comprises the tailing solution, a lightweight aggregate, and a curing agent; the curing agent at least comprises ordinary Portland cement, sulphoaluminate cement and a chelating agent; the chelating agent comprises polyacrylamide and a reinforcing agent; and the reinforcingagent comprises a lithium salt; the non-sintered brick specifically comprises, by mass, 35-60 parts of the tailing solution, 20 to 50 parts of the lightweight aggregate; 10 to 40 parts of the curingagent; 1-10 parts of the chelating agent; and 1-5 parts of the reinforcing agent. The non-sintered brick obtained by adopting compression molding process has the performance advantages of light weightand high strength, and is high in manufacturing efficiency, short in maintenance period and high in production efficiency by adopting a mold mode.

Description

Technical field [0001] The invention relates to the field of non-sintered bricks, in particular to a non-sintered brick based on tailings solution and a manufacturing process. Background technique [0002] After decades of large-scale exploitation, my country's resource and environmental situation has become increasingly severe, and it is not optimistic. On the one hand, mine resources are facing exhaustion; on the other hand, large amounts of tailings from ore dressing are piled up. According to the survey and statistics of the National Development and Reform Commission, in 2013, the amount of tailings produced in my country was 1.649 billion tons, a year-on-year increase of 1.73%, and the comprehensive utilization of tailings was 312 million tons, a year-on-year increase of 7.96%. As of the end of 2013, the accumulated stockpiles of tailings in my country reached 14.6 billion tons. Tailings not only waste mineral resources, but also occupy land resources. At the same time, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/16C04B28/06B28B3/04B28C5/00C04B111/40
CPCB28B3/022B28B3/04B28C5/003C04B28/06C04B28/16C04B2111/40C04B2201/20C04B2201/50C04B7/02C04B7/32C04B18/12C04B18/027C04B24/2652C04B22/10C04B14/185C04B22/147
Inventor 赵明刘文龙伍根伙张喜文陈伟明李仰根
Owner XIAMEN MEIYI GRP CO LTD
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