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Red mud-based sewage treatment agent, preparation method thereof, red mud-based ceramsite concrete, and preparation method and application of concrete

A technology of sewage treatment agent and ceramsite concrete, which is applied in the field of resource utilization of red mud, can solve problems such as secondary pollution, and achieve the effects of reducing carbon emissions, low production costs, significant economic benefits and environmental benefits

Pending Publication Date: 2020-06-02
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical solution of the present invention can not only realize the large-scale utilization of red mud, but also effectively solve the defect that the utilization of red mud is easy to cause secondary pollution, and reduce the negative impact of the utilization of red mud on the ecological environment

Method used

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  • Red mud-based sewage treatment agent, preparation method thereof, red mud-based ceramsite concrete, and preparation method and application of concrete
  • Red mud-based sewage treatment agent, preparation method thereof, red mud-based ceramsite concrete, and preparation method and application of concrete
  • Red mud-based sewage treatment agent, preparation method thereof, red mud-based ceramsite concrete, and preparation method and application of concrete

Examples

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Effect test

no. 1 example

[0062] 1, a kind of preparation method of red mud base sewage treatment agent, comprises the steps:

[0063] (1) In terms of mass percentage, dry red mud and blast furnace slag separately, grind them, and then pass through 400 sieves to obtain red mud fine powder and blast furnace slag fine powder, and mix the two fine powders at a mass ratio of 6:4 to obtain solid waste Complex.

[0064] (2) Use simulated industrial tail gas (mass concentration of carbon dioxide is about 16%) to acidify the solid waste complex in step (2) for 4.0 hours under the conditions of temperature 100°C, humidity 80%, and pressure 1.0MPa. After completion The solid waste complex is dried, ground, and passed through a 400-mesh sieve to obtain the modified solid waste complex.

[0065] (3) In terms of mass percentage, 90% of the modified solid waste complex of step (2), 0.4% polycarboxylate water reducer, 4.0% sodium silicate, 2.0% ultrafine zeolite (900 mesh), 3.6 Mix % hexadecyl ammonium bromide even...

no. 2 example

[0070] 1, a kind of preparation method of red mud base sewage treatment agent, comprises the steps:

[0071] (1) Red mud, coal gangue, and iron tailings are dried and ground respectively by mass percentage, and then passed through 400 sieves to obtain red mud fine powder, coal gangue fine powder, and iron tailing fine powder. The ratio of 6:3:1 is mixed to obtain solid waste complex.

[0072] (2) Utilize simulated industrial tail gas (mass concentration of carbon dioxide is about 16%) to acidify the solid waste compound in step (2) for 4 hours under the conditions of temperature 200°C, humidity 100%, and pressure 2.0MPa. The solid waste complex is dried, ground, and passed through a 400-mesh sieve to obtain a modified solid waste complex.

[0073] (3) In terms of mass percentage, 90% of the modified solid waste complex of step (2), 0.4% naphthalene-based water reducer, 4.0% sodium hydroxide, 2.0% ultrafine zeolite (900 mesh), 3.6% Sodium dodecyl sulfonate is mixed evenly, pu...

no. 3 example

[0078]1, a kind of preparation method of red mud base sewage treatment agent, comprises the steps:

[0079] (1) In terms of mass percentage, red mud and fly ash are dried and ground respectively, and then passed through 400 sieves to obtain red mud micropowder and fly ash micropowder, and the two kinds of micropowders are mixed in a mass ratio of 6:4 to obtain Solid waste compound.

[0080] (2) Utilize simulated industrial tail gas (mass concentration of carbon dioxide is about 16%) to acidify the solid waste compound in step (2) for 4 hours under the conditions of temperature 150°C, humidity 80%, and pressure 1.5MPa. The solid waste complex is dried, ground, and passed through a 400-mesh sieve to obtain a modified solid waste complex.

[0081] (3) In terms of mass percentage, 90% of the modified solid waste complex of step (2), 0.5% aliphatic water reducer, 3.0% potassium silicate, 1.0% ultrafine metal organic framework material (ZIFs, 800 mesh), 5.0% cetyl ammonium bromide...

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Abstract

The invention relates to the technical field of red mud resource utilization, and especially relates to a red mud-based sewage treatment agent, a preparation method thereof, a red mud-based ceramsiteconcrete, and a preparation method and an application of the concrete. The red mud-based sewage treatment agent is prepared from 80-90% of an acidified solid waste complex, 2-15% of an alkali activator, 0-1.0% of a water reducing agent, 0.5-2.0% of an ultrafine additive and 1.0-5.0% of a treatment agent; and the solid waste complex comprises at least one of red mud powder, blast furnace slag powder, fly ash, coal gangue powder and iron tailing powder. The red mud is modified to prepare an intermediate, namely the red mud-based sewage treatment agent, and the red mud-based sewage treatment agent is used for adsorbing pollutants in sewage, and then used as a raw material again to prepare the final end product red mud-based ceramsite concrete, progressive comprehensive utilization of red mudis achieved, and adsorbed pollution factors can be fixedly sealed in the final end product, so the environmental friendliness of the final end product is guaranteed.

Description

technical field [0001] The invention relates to the technical field of resource utilization of red mud, in particular to a red mud-based sewage treatment agent and a preparation method thereof, red mud-based ceramsite concrete, a preparation method and application thereof. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] With the vigorous development of the world's economic construction, while consuming a large amount of resources, it also produces a large amount of solid waste, sewage and exhaust gas, which has affected the regional ecological environment, social and economic development and the safety of residents' lives. Among them, red mud is a solid waste of the alumi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00B01J20/10C02F1/28B01J20/30
CPCC04B28/006B01J20/02B01J20/103C02F1/281C04B2111/00017C04B2111/00793C04B2201/50B01J2220/4887C04B18/0409C04B18/141C04B22/06C04B22/00C04B14/047C04B24/005C04B2103/302C04B18/146C04B14/02B01J20/183B01J20/3085B01J20/3021B01J20/3042B01J20/12B01J20/3028B01J20/261B01J20/3078
Inventor 李术才张健李召峰
Owner SHANDONG UNIV
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