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Manganese gangue slag-based geopolymer cementing material and preparation method thereof

A technology of cementitious materials and tailings slag, applied in the field of manganese tailings slag base polymer cementitious materials and its preparation, to achieve the effects of improving comprehensive utilization, reducing costs, and simple process

Inactive Publication Date: 2016-01-27
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
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Problems solved by technology

At present, there are few reports on the preparation of manganese tailings slag / metakaolin polymer by substituting part of metakaolin with manganese tailings slag

Method used

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  • Manganese gangue slag-based geopolymer cementing material and preparation method thereof

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Experimental program
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Effect test

Embodiment

[0020] (1) Preparation of metakaolin

[0021] Crush the kaolin, place it in a muffle furnace, raise the temperature to 600°C at a rate of 10°C / min, and keep it warm for 6 hours to obtain metakaolin with strong activity, and grind the obtained metakaolin with a sealed grinder Form into a fine powder with a particle size of 0.049-0.074mm.

[0022] (2) preparation of water glass solution

[0023] To 70.4mL, the modulus is 3.26, the degree of Baume is 39.7, ω(Na 2 O)=8.75%, ω(SiO 2 )=27.6%, adding 14.8 grams of sodium hydroxide in the commercially available technical grade water glass of density ρ=1.40g / mL is the water glass solution of 1.4 that makes modulus.

[0024] (3) Preparation of manganese tailings slag base polymer cementitious material

[0025] a. Put the manganese tailings slag in a sealed grinder, and grind it to a manganese tailings slag powder with a particle size of about 0.049-0.074mm.

[0026] B. be 30% according to the water glass solution dosage, the water-...

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Abstract

The invention discloses a manganese gangue slag-based geopolymer cementing material and a preparation method thereof. The geopolymer cementing material is prepared from main raw materials including kaolin and manganese gangue slag. The technology is simple, manganese gangue slag powder replaces partial metakaolin, the cost of the geopolymer cementing material is reduced, the comprehensive utilization degree of the manganese gangue slag is increased, and mechanical properties and physical properties (including the bulk density and the water absorption) of the manganese gangue slag-based geopolymer cementing material are equivalent to those of metakaolin-based geopolymer cementing materials.

Description

technical field [0001] The invention belongs to the technical field of inorganic gelling materials, and in particular relates to a manganese tailings slag base polymer gelling material and a preparation method thereof. Background technique [0002] At present, my country is the largest producer of electrolytic manganese in the world, and the output of electrolytic manganese accounts for about 98% of the world's total output. After the electrolysis of manganese ore, a huge industrial solid waste - manganese tailings slag is produced. These manganese tailings slags accumulated in large quantities not only cause serious waste of industrial raw materials (also contain about 2% manganese in the manganese slag), but also cause serious harm to the environment, occupying a large amount of land, affecting soil structure, destroying ecology, polluting the atmosphere and Surroundings. The predecessors have done a lot of work on the recycling of manganese tailings, among which the use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/14
CPCY02P40/10
Inventor 杨瑞善刘峥云亮王熙军
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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