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Red mud-fly ash polymeric inorganic cementitious material and its preparation method and application

A technology of inorganic cementitious materials and fly ash, which is applied in the field of building materials, can solve the problems of large-scale comprehensive utilization of red mud, complex material composition of red mud, and difficulty in comprehensive utilization. It achieves low cost and low production cost. Low, versatile effect

Active Publication Date: 2016-09-14
INST OF GEOCHEM CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The material composition of red mud is complex, the particle size is small, the discharge volume is large, and the alkalinity is high, which makes its comprehensive utilization difficult
At present, the large-scale comprehensive utilization of red mud has not been realized in the world.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The red mud-fly ash polymerized inorganic gelling material is prepared according to the following steps:

[0029] a. Weigh 50g of red mud and 150g of fly ash, and use the Bayer method to ball mill the red mud to pass through a 60-mesh sieve, mix evenly, and set aside;

[0030] B, take by weighing 45g of low-alkali sodium silicate, according to the ratio of solid-liquid ratio 0.35g:1mL, add tap water and fully stir in low-alkali sodium silicate, be mixed with low-alkali sodium silicate aqueous solution;

[0031] c. Slowly add the low-alkali sodium silicate aqueous solution obtained in step b to the mixed slag material in step a, stir while adding, and adjust the consistency by adding a small amount of tap water according to the situation. In this example, the amount of water added is about 26ml to obtain glue condensate material.

[0032] Performance testing of cementitious materials:

[0033] The gelled material was tested for tensile collagen strength, tensile collag...

Embodiment 2

[0036] The red mud-fly ash polymerized inorganic gelling material is prepared according to the following steps:

[0037] a. Weigh 55g of red mud and 155g of fly ash, and use the Bayer process to ball mill the red mud to pass through a 70-mesh sieve, mix evenly, and set aside;

[0038] B, take by weighing 45g of low-alkali sodium silicate, according to the ratio of solid-liquid ratio 0.35g:1mL, add tap water and fully stir in low-alkali sodium silicate, be mixed with low-alkali sodium silicate aqueous solution;

[0039] c. Slowly add the low-alkali sodium silicate aqueous solution obtained in step b to the mixed slag in step a, stir while adding, and adjust the consistency by adding a small amount of tap water according to the situation. In this example, the amount of water added is about 31ml to obtain glue condensate material.

[0040] Performance testing of cementitious materials:

[0041] The gelled material was tested for tensile collagen strength, tensile collagen stren...

Embodiment 3

[0044] The red mud-fly ash polymerized inorganic gelling material is prepared according to the following steps:

[0045] a. Weigh 60g of red mud and 160g of fly ash, and use the Bayer method to ball mill the red mud to pass through a 80-mesh sieve, mix evenly, and set aside;

[0046] B, take by weighing 45g of low-alkali sodium silicate, according to the ratio of solid-liquid ratio 0.4g:1mL, add tap water to low-alkali sodium silicate and fully stir, be mixed with low-alkali sodium silicate aqueous solution;

[0047] c. Slowly add the low-alkali sodium silicate aqueous solution obtained in step b to the mixed slag material in step a, stir while adding, and adjust the consistency by adding a small amount of tap water according to the situation. In this example, the amount of water added is about 36ml, and the glue is obtained. condensate material.

[0048] Performance testing of cementitious materials:

[0049] The gelled material was tested for tensile collagen strength, ten...

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Abstract

The present invention discloses a red mud-fly ash polymerization type inorganic cementing material, which comprises the following raw materials, by weight: 75-95 parts of industrial waste, 5-20 parts of an activator, and water, wherein the water is added according to a solid-to-liquid ratio of 1.5-2.5 g: 1 ml. According to the present invention, characteristics of simple raw material formula, wide source, low cost, strong operability and substantial industrial waste consumption are provided, wherein the amount of the waste material in the solid raw material can be 80-90%; the raw materials are not added with cement and other ingredients, cementing property of the obtained product is from the excitation reaction of the technology, and the formula is not added with sodium hydroxide and other alkaline activators, such that the cost is low, and the side effect is less; and the use is wide, and the obtained product can be used for adhesion between stones and stones, between stones and ceramics, and between ceramics and ceramics, and can further be used for adhesion of stones or ceramics on the cement-base surface.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a polymeric inorganic gelling material made from industrial waste residues such as red mud and fly ash and a preparation method thereof. Background technique [0002] At present, the stone bonding glue and mesh glue used in the market are basically organic bonding materials. This type of bonding material contains a large amount of organic solvents. During the construction process, it will cause great harm to the construction personnel and cause harm to the environment. Pollution, and poor fireproof performance, in case of fire, it will emit toxic gas and thick smoke, causing casualties, poor weather resistance and easy aging, affecting service life. When the stone used for the exterior wall of the building is bonded, there is a danger of falling off as the service life increases. The market is eagerly looking forward to the research and development of new ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B18/04
CPCY02W30/91
Inventor 顾汉念田佳伟王宁赵成东田元江
Owner INST OF GEOCHEM CHINESE ACADEMY OF SCI
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