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Low-emission high-strength red-mud concrete, and industrial production method and application thereof

A high-strength, concrete technology, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve problems such as groundwater pollution, land alkalization, and health hazards, and achieve high polymerization degree, low cost, and high use good effect

Active Publication Date: 2014-07-16
嘉兴如运建筑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the cumulative stockpiles of red mud in China are about 2×10 8 tons, and is expected to reach 3.5×10 by 2015 8 tons, the discharged red mud is mainly treated by damming and stockpiling, resulting in alkalization of the land and pollution of groundwater, endangering people's health

Method used

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  • Low-emission high-strength red-mud concrete, and industrial production method and application thereof
  • Low-emission high-strength red-mud concrete, and industrial production method and application thereof
  • Low-emission high-strength red-mud concrete, and industrial production method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In this example, the prepared high-strength red mud concrete is uniformly mixed with modified sulfur and red mud particles. The composition of the high-strength red mud concrete is by weight: 40% modified sulfur, 60% red mud particles . The particle size of the red mud particles is ≤0.1mm.

[0039] The preparation process of described modified sulfur is as follows:

[0040] Step 1, preparation of sulfur mixed solution: mixing sulfur and ferrous chloride aqueous solution to obtain sulfur mixed solution; the weight ratio of sulfur in the sulfur mixed solution to ferrous chloride in the described ferrous chloride aqueous solution is 500: 20.

[0041] Step II, sulfur melting: using heating equipment and under constant temperature conditions, heat the sulfur mixture described in step I until the sulfur is heated to a molten state.

[0042] Step III, sulfur modification: Add the modifier to the molten sulfur in step II and mix evenly, and use the heating equipment to conti...

Embodiment 2

[0072] In this example, the difference from Example 1 is that the prepared high-strength red mud concrete is uniformly mixed with modified sulfur, red mud particles and steel slag particles, and the composition of the high-strength red mud concrete is by weight: Modified sulfur 21%, red mud particles 25%, steel slag 54%; the particle size of the steel slag particles is ≤10mm. During actual preparation, the particle size of the steel slag particles is preferably ≤5mm.

[0073] In this embodiment, when the modified sulfur is prepared, the difference from Example 1 is that the weight ratio of the sulfur in the sulfur mixed solution in step 1 to the ferrous chloride in the ferrous chloride aqueous solution is 500︰15; in step II, use the heating equipment and heat the sulfur mixture in step I at a temperature of 119°C; after the sulfur is completely melted, use the heating equipment and heat The melted sulfur is kept at a constant temperature under the following conditions; when t...

Embodiment 3

[0082] In this example, the difference from Example 1 is that the prepared high-strength red mud concrete is uniformly mixed with modified sulfur, red mud particles and steel slag particles, and the composition of the high-strength red mud concrete is by weight: 23% modified sulfur, 28% red mud particles, 49% steel slag; the particle size of the steel slag particles is ≤10mm. During actual preparation, the particle size of the steel slag particles is preferably ≤5 mm.

[0083]In this embodiment, when the modified sulfur is prepared, the difference from Example 1 is that the weight ratio of the sulfur in the sulfur mixed solution in step 1 to the ferrous chloride in the ferrous chloride aqueous solution is 500:10; in step II, use the heating equipment and heat the sulfur mixture in step I at a temperature of 123°C; after the sulfur is completely melted, use the heating equipment and heat Under the conditions, the melted sulfur is kept at a constant temperature; when the sulfur...

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Abstract

The invention discloses a low-emission high-strength red-mud concrete and an industrial production method and application thereof. The high-strength red-mud concrete comprises, by weight, 21 to 40% of modified sulphur, 25 to 60% of red mud particles and 54 to 0% of steel slag, is prepared through uniform blending of the modified sulphur, the red mud particles and steel slag particles and has compressive strength of no less than 50 MPa. The industrial production method comprises the following steps: 1, preparation of the modified sulphur; 2, preparation of aggregate and fusion with the modified sulphur; and 3, uniform blending. Application of the high-strength red-mud concrete is as follows: the high-strength red-mud concrete is poured into a casting molding die so as to obtain molded red mud stone. The industrial production method has the advantages of simple process steps, short production flow, low investment cost, easy operation, convenient implementation, capacity of effective utilization of the waste material red mud in the aluminum industry and discharge of low concentration sulfur-containing gas during production and casting; and a produced red mud concrete structural member has excellent performance.

Description

technical field [0001] The invention belongs to the technical field of using industrial waste to prepare high-strength structural materials, and in particular relates to a low-emission high-strength red mud concrete and its industrial production method and application. Background technique [0002] The technology of using sulfur, sand, steel slag, furnace ash, shell powder, etc. to prepare high-strength sulfur concrete has received extensive attention and research in Europe, America and Japan, especially for acidic soil areas or groundwater facilities and civil structures that require wear resistance , general Portland cement is difficult to meet the actual use requirements, and high-strength sulfur concrete is required. [0003] Since sulfur mainly comes from the by-products of oil and natural gas desulfurization, it is in a serious situation of oversupply. Red mud is the production of Al from bauxite 2 o 3 The remaining reddish-brown, powdery and muddy strongly alkaline...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/36C04B18/30
CPCY02W30/91
Inventor 孟昭赵世龙杨云
Owner 嘉兴如运建筑科技有限公司
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