Method for preparing glass ceramic from waste residues related to severe hazards

A technology of glass ceramics and waste slag, which is applied in the field of waste resource utilization, can solve the problems of unbearable economic costs, high operating costs, and high energy consumption, and achieve the effects of energy saving, strong market competitiveness, and good performance

Inactive Publication Date: 2019-04-05
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of the high-temperature smelting reduction method for treating heavy and hazardous waste is high energy consumption. Since the high-temperature smelting reducti

Method used

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  • Method for preparing glass ceramic from waste residues related to severe hazards
  • Method for preparing glass ceramic from waste residues related to severe hazards
  • Method for preparing glass ceramic from waste residues related to severe hazards

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Embodiment 1 A method for preparing glass ceramics using heavy and hazardous waste slag includes the following steps:

[0033] (1) Use heavy and hazardous waste as the main material, 17 parts of iron ore, 15 parts of quicklime, 15.9 parts of quartz sand, 3.5 parts of fluorite as auxiliary materials, 2.2 parts of coke and 4.6 parts of waste anode carbon block as reducing substances , Mix auxiliary materials and reducing substances with 100 parts of heavy hazardous waste residue HW17 (electroplating sludge) and press them into block materials;

[0034] (2) Put the bulk material into the heating furnace and heat it at 1250℃ to melt and reduce, the metal alloy obtained flows out of the tap hole, and the obtained hot molten slag flows out of the slag outlet; take a little hot molten slag and quench with water Obtain the water quenched slag, and analyze the chemical composition of the water quenched slag (see Table 1 for composition);

[0035] (3) Combining the chemical composition...

Example Embodiment

[0046] Example 2

[0047] A method for preparing glass ceramics using heavy and hazardous waste slag includes the following steps:

[0048] (1) 15 parts quicklime, 2 parts fluorite, 3 parts soda ash are used as auxiliary materials, and 10 parts coke powder is used as reducing materials. The auxiliary materials and reducing materials are mixed with 100 parts of heavy and hazardous waste HW48 (copper slag) and pressed It was formed into lumps and heated and melted at 1300°C. A small amount of hot molten slag was quenched from the slag outlet to obtain the water quenched slag after hazardous waste treatment, and the chemical composition of the water quenched slag was analyzed (see Table 2 for the results).

[0049] (2) Mix 10 parts of stainless steel slag and 5 parts of soda ash evenly, and then make 5mm spherical tempering material particles;

[0050] (3) The hot molten slag processed by heavy and hazardous waste slag is introduced into the furnace through the slag trench, and while the...

Example Embodiment

[0060] Example 3

[0061] It is basically the same as Example 1, except that:

[0062] (1) Ball mill and mix 54 parts of quartz sand, 6.5 parts of magnesium oxide, and 3.6 parts of soda ash to make spherical tempering material particles;

[0063] (2) Add the spherical tempering material to the hot molten slag prepared in step (4) of Example 1 in a weight ratio of 100:55 of hot molten slag: tempering material;

[0064] (3) Add heat to the hot molten slag mixed with tempering materials through electrode heating, perform high-temperature tempering, and keep the temperature at 1400℃ for 2h to obtain a melt;

[0065] (4) Preheat the pipe making mold to 550°C, and pour the melt into the preheated mold to form;

[0066] (5) Send the formed glass tube into a microwave roller kiln, heat it at 580℃ for 30min for annealing treatment, then heat it to 800℃, keep it for 50min for crystallization treatment;

[0067] (6) Cool to room temperature to obtain a glass ceramic tube.

[0068] Figure 4 It is the...

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Abstract

The invention provides a method for preparing glass ceramic from waste residues related to severe hazards. The high-entropy glass ceramic can be prepared by the aid of the method at a low cost in an environment-friendly manner. The method has the advantages that the problem of high energy consumption in high-entropy glass ceramic production procedures can be pertinently solved by the aid of the method; hot melt residues at the temperatures higher than 1100 DEG C are utilized, heat supplementing, quenching and tempering are carried out by the aid of residue melting furnaces, accordingly, the high-entropy glass ceramic can be produced by the aid of the method, energy consumption can be reduced to a great extent, the method conforms to the current national energy conservation and emission reduction policy and is important technical innovation for production in the national hazardous waste industry, and the hazardous waste recycling and reusing additional values can be sufficiently maximized; diversified trace heavy metal elements in the hazardous waste residues which are subjected to high-temperature melting-reduction treatment are excellent nucleating agents, accordingly, the anticorrosion and abrasion-resistant high-entropy glass ceramic which is high in strength and hardness and excellent in high-temperature heat stability can be prepared without optional additional nucleatingagents in tests, the manufacturing cost of the glass ceramic further can be reduced, and the method is extremely high in market competitiveness.

Description

technical field [0001] The invention belongs to the field of resource utilization of waste, and relates to a method for producing glass ceramics by using heavy and hazardous waste slag, in particular to a method for directly using high-temperature smelting reduction to process the hot slag produced by heavy and hazardous waste slag for tempering to produce glass ceramics . Background technique [0002] Heavy and hazardous waste generally refers to hazardous waste containing toxic metals, including expired catalysts, used batteries, waste solar panels, electronic waste, electroplating waste, pickling waste, smelting waste, cyanide slag, etc. There are many types of heavy and hazardous waste, The quantity is huge. The new version of the "National List of Hazardous Wastes" has a total of 46 categories, 17 of which are hazardous wastes. In 2015, the national industrial hazardous waste production volume was 42.2 million tons, and the hazardous waste involved was 15-20 million t...

Claims

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Application Information

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IPC IPC(8): C03C10/04C03C10/06C03C6/10C03C6/00C03C6/06C03C6/04
CPCC03C1/002C03C10/0009C03C10/0036
Inventor 李保卫张雪峰沈保根李世龙邓磊波赵增武赵同云贾晓林马强
Owner INNER MONGOLIA UNIV OF SCI & TECH
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