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Method for preparing foam microcrystalline glass through red mud

A foamed glass-ceramic and red mud technology, applied in the field of foamed glass-ceramic, can solve the problems of harming the environment and destroying cultivated land, and achieve the effects of low cost, promoting crystallization, and rich sources of raw materials

Inactive Publication Date: 2018-09-28
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Foamed glass-ceramic uses clay as the main raw material, and its production will destroy cultivated land and seriously endanger the environment

Method used

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  • Method for preparing foam microcrystalline glass through red mud

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A method for producing foamed glass-ceramics from red mud and the prepared foamed glass-ceramics, the ingredients are as follows:

[0036] In parts by weight, the composition and dosage of the foamed glass-ceramic batch (100 parts in total, the same below) are: red mud 10, fly ash 45, calcium carbonate 3, dolomite 3, trisodium phosphate 7. Borax 32. The experimental steps are:

[0037] 1) Mixing: According to the ratio of raw materials, weigh red mud, fly ash, calcium carbonate, dolomite, trisodium phosphate, borax, mix evenly, and the mixing time is 5-10 minutes;

[0038] 2) Grinding: put the uniformly mixed batch into a ball mill and grind for 2.5 hours;

[0039] 3) Compression: Put the ground batch material into the abrasive tool and press it into a cylindrical sample with a radius of 25mm and a thickness of 7mm;

[0040] 4) Firing: Put the pressed sample into a reaction furnace and keep it warm at 900°C for 30 minutes to prepare foamed glass-ceramics.

Embodiment 2

[0042] A method for producing foamed glass-ceramics from red mud and the prepared foamed glass-ceramics, the ingredients are as follows:

[0043] In parts by weight, the composition and dosage of the foamed glass-ceramic batch (100 parts in total, the same below) are: red mud 15, fly ash 45, calcium carbonate 3, dolomite 2, trisodium phosphate 3. Zinc oxide 2. Borax 30. The experimental steps are:

[0044] 1) Mixing: According to the ratio of raw materials, weigh red mud, fly ash, calcium carbonate, dolomite, trisodium phosphate, zinc oxide, borax, mix evenly, and the mixing time is 5 to 10 minutes;

[0045] 2) Grinding: put the uniformly mixed batch into a ball mill and grind for 2 hours;

[0046] 3) Compression: Put the ground batch material into the abrasive tool and press it into a cylindrical sample with a radius of 25mm and a thickness of 7mm;

[0047] 4) Firing: Put the pressed sample into a reaction furnace and keep it warm at 870°C for 25 minutes to prepare foamed ...

Embodiment 3

[0049] A method for producing foamed glass-ceramics from red mud and the prepared foamed glass-ceramics, the ingredients are as follows:

[0050] In parts by weight, the composition and dosage of the foamed glass-ceramic batch (100 parts in total, the same below) are: red mud 12, fly ash 45, sodium carbonate 3, carbon powder 2, zinc oxide 3 , Borax 35. The experimental steps are:

[0051] 1) Mixing: According to the ratio of raw materials, weigh red mud, fly ash, sodium carbonate, carbon powder, zinc oxide, borax, and mix evenly. The mixing time is 5 to 10 minutes;

[0052] 2) Grinding: put the uniformly mixed batch into a ball mill and grind for 3 hours;

[0053] 3) Compression: Put the ground batch material into the abrasive tool and press it into a cylindrical sample with a radius of 25mm and a thickness of 7mm;

[0054] 4) Firing: Put the pressed sample into a reaction furnace and keep it warm at 850°C for 20 minutes to prepare foamed glass-ceramics.

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Abstract

The invention relates to a preparing method for foam microcrystalline glass, in particular to a method for preparing the foam microcrystalline glass through red mud. The preparing method aims at preparing the foam microcrystalline glass with the industrial solid waste red mud, the low energy consumption and the excellent performance. The preparing method includes the following steps that (1) industrial waste residues, fluxing agent, foaming agent and foam stabilizer are mixed to be even according to the weight ratio to form a batch mixture; (2) the mixed batch mixture is put into a ball mill and powdered; (3) the powdered batch mixture is put into a grinding tool and pressed and formed; (4) a pressed sample is put into a reacting furnace and fired. The method has the advantages that the problems that in aluminum industry of China, the discharging quantity of waste residues is large, waste residues are difficult to treat are solved, the comprehensive utilization level of the industrialwaste is improved, sustainable development of building materials in China can be achieved, and social economical benefits can be remarkably improved.

Description

technical field [0001] The invention relates to a foamed glass-ceramic, especially to a foamed glass-ceramic prepared by utilizing the red mud of industrial waste produced in the production process of alumina. Foamed glass-ceramics with physical and mechanical properties and stable chemical properties. Background technique [0002] Red mud is the industrial waste residue produced in the process of producing alumina. For every ton of alumina produced, 0.8~1.5 tons will be produced. The main component is SiO 2 、Al 2 o 3 and Fe 2 o 3 In 2015, the accumulated stockpile of red mud reached 350 million tons. Using the traditional stacking method not only occupies land resources but also requires a certain amount of infrastructure costs. If the red mud cannot be fully utilized and effectively recycled, it will bring great harm to the environment. A large amount of caustic soda is used in the production of alumina, which makes the red mud highly alkaline, which affects the reso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C11/00C03C10/00
CPCC03C10/0063C03C11/007
Inventor 赵继玲岳云龙康俊峰
Owner UNIV OF JINAN
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