Preparation method of recyclable cadmium adsorption ceramic powder foam concrete block

A foamed concrete and porcelain powder technology, which is applied in ceramic products, applications, household appliances, etc., can solve the problems of inability to recycle, waste of adsorbent resources, and cost increase, so as to improve the efficiency of hydration reaction and the proportion of foam breaking, reduce Cadmium content, the effect of increasing pH

Inactive Publication Date: 2020-12-04
山东铭城环保新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional adsorbents are mostly powder-based (activated carbon, humus, peat, etc.), and the powder adsorbents are directly sprayed on the soil during use, which cannot be recycled, resulting in waste of adsorbent resources and increased costs

Method used

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  • Preparation method of recyclable cadmium adsorption ceramic powder foam concrete block

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The porcelain powder is fired at 650°C for 0.5h, and the baked porcelain powder is mixed with gypsum, quartz sand, and lime in parts by mass of 70%, 10%, 10%, and 10%, and the water-solid ratio is 0.5. The amount of aluminum powder added in the foaming stage is 2‰ of the total mass of solid raw materials, and the added amount of diethylene glycol and syrup is 2‰ of the total mass of solid raw materials. The microwave heating oxidation temperature is 75°C and the time is 0.5h. Two samples were prepared, and the average compressive strength and cadmium adsorption efficiency of the blocks were tested for 28 days. After the adsorption experiment was completed, regeneration treatment was carried out at 40°C for 5 hours, and the compressive strength and cadmium adsorption experiments were continued. The experimental results are shown in Table 1.

Embodiment 2

[0026] According to the porcelain powder 700 roasting 0.75h, roasting porcelain powder, gypsum, quartz sand, lime 75%, 15%, 5%, 5% mixed, water-solid ratio 0.5. The amount of aluminum powder added in the foaming stage is 4‰ of the total mass of solid raw materials, and the added amount of diethylene glycol and syrup is 4‰ of the total mass of solid raw materials. The microwave heating oxidation temperature was 80°C and the time was 0.8h. Two samples were prepared for each implementation case, and the average compressive strength and cadmium adsorption efficiency of the blocks were tested for 28 days. After the adsorption experiment was completed, regeneration treatment was carried out at 40°C for 5 hours, and the compressive strength and cadmium adsorption experiments were continued. The experimental results are shown in Table 1.

Embodiment 3

[0028] According to the firing of porcelain powder at 750°C for 1 hour, the firing porcelain powder, gypsum, quartz sand, and lime are mixed at 80%, 10%, 0%, and 5%, and the water-solid ratio is 0.5. The amount of aluminum powder added in the foaming stage is 6‰ of the total amount of raw materials, and the amount of diethylene glycol and syrup added is 6‰ of the total amount of raw materials. The microwave heating oxidation temperature is 85°C and the time is 1.1h. Two samples were prepared for each implementation case, and the average compressive strength and cadmium adsorption efficiency of the blocks were tested for 28 days. After the adsorption experiment was completed, regeneration treatment was carried out at 40°C for 5 hours, and the compressive strength and cadmium adsorption experiments were continued. The experimental results are shown in Table 1.

[0029] Table 1

[0030]

[0031] As can be seen from the experimental results in Table 1, the ceramic powder foam...

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Abstract

The invention relates to the field of solid waste utilization and environmental protection, and discloses a preparation method of a recyclable cadmium adsorption ceramic powder foam concrete block. The method uses solid waste ceramic polishing powder as a main raw material, and roasting pretreatment and microwave heating pre-curing processes are conducted to obtain the foam concrete block with high strength and high adsorption performance. Calcined ceramic powder, gypsum, quartz sand, lime and water are mixed according to a certain ratio, an aluminum powder foaming agent and a reinforcing agent are added, microwave heating pre-curing treatment is conducted, and then pouring, polishing, cutting and curing are conducted to obtain the ceramic powder foam concrete. A solution is provided for solving ceramic waste accumulation, and meanwhile the prepared cadmium adsorption building block has the advantages of being high in strength, easy to recycle and capable of being recycled.

Description

technical field [0001] The invention relates to a method for preparing a recyclable cadmium-adsorbed porcelain powder foam concrete block, which belongs to the interdisciplinary field of solid waste treatment and environmental protection, and mainly relates to waste ceramic waste reduction and resource utilization technologies. Background technique [0002] With the rapid development of my country's economy and the improvement of residents' living standards, the demand for ceramic products is increasing day by day. Because ceramic products need to be repeatedly polished and polished during the preparation process, a large amount of ceramic polishing waste, namely porcelain powder, is produced. According to statistics, my country's annual porcelain powder waste is more than 2 million tons. Porcelain powder has a small particle size and is easy to disperse with the wind, thus causing serious air and soil pollution, and the accumulation of a large amount of porcelain powder is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/14C04B111/40
CPCC04B28/14C04B2111/40C04B2201/50C04B2201/52C04B18/023C04B14/06C04B22/064C04B22/04C04B24/026C04B24/38C04B38/02C04B38/0074
Inventor 韩向阳张鹏宋强鲍玖文
Owner 山东铭城环保新材料科技有限公司
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