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Method for synthesizing porous cordierite ceramic material by gangue and waste refractory material

A technology of waste refractory materials and porous cordierite, which is applied in the direction of ceramic products, furniture waste recycling, solid waste removal, etc., to achieve the effect of solving pollution and saving production costs

Inactive Publication Date: 2009-09-16
BEIJING JINGYEYUAN NEW MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research on the low-cost synthesis of high-performance cordierite porous ceramic materials using solid waste has not been reported yet.

Method used

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  • Method for synthesizing porous cordierite ceramic material by gangue and waste refractory material
  • Method for synthesizing porous cordierite ceramic material by gangue and waste refractory material
  • Method for synthesizing porous cordierite ceramic material by gangue and waste refractory material

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Embodiment Construction

[0021] (1) Prepare the raw materials according to Table 1, grind them into fine powder, and pass through a 325-mesh sieve.

[0022] (2) Mix the raw materials, use absolute ethanol (mass percentage ≥ 99.7%) or water to dilute, and use agate balls (covered with the bottom of the tank) with a diameter of 1cm as the ball milling medium, put the diluted raw materials and agate balls into the nylon tank After being sealed in the middle, ball mill for 6 hours in a planetary ball mill until the particle size is less than 5um.

[0023] (3) Drying: Put the mixed raw materials into a drying oven at 100°C for 5 hours to dry.

[0024] (4) Molding: add a small amount of polyvinyl alcohol binder (0.5mL / 10g) to the dry raw material, and press it under a pressure of 40MPa.

[0025] (5) High-temperature sintering: sinter the sample body in an air atmosphere at a temperature of 1320° C. to 1420° C. and a holding time of 2-6 hours.

[0026] (6) Cooling: Natural cooling in the air.

[0027] Tab...

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Abstract

A method for synthesizing porous cordierite ceramic material by gangue and waste refractory material belongs to the technical field of synthesis of inorganic non-metal material. The invention comprises the steps of using gangue, waste refractory material (magnesia carbon brick and sliding brick) and saw dust pore-forming material as raw materials, mixing 45-75% of gangue, 8-13% of used magnesia carbon brick and 8-13% of used sliding brick with 5-40% of saw dust in a mass ratio, performing ball milling, drying and forming, and then keeping temperature for 2-6 hours at the temperature of 1320-1420 DEG C in the air atmosphere, so as to obtain the synthesized sintered blank. The cordierite porous ceramic material synthesized by the invention has an apparent porosity of 36%, a volume concentration of 1.30g / cm3 and rupture strength of 9MPa. The invention not only solves the pollution of solid waste to environment due to accumulation, but also the synthesized cordierite porous ceramic material can be applied to industrial production as the heat insulating material, and the invention saves production cost.

Description

technical field [0001] The invention relates to the technical field of synthesis of inorganic non-metallic materials, in particular to a method for synthesizing cordierite porous ceramic materials with coal gangue and waste refractory materials under normal pressure. Background technique [0002] The chemical formula of cordierite is 2MgO 2Al 2 o 3 ·5SiO2 2 , the theoretical chemical composition is: MgO 13.7%, Al 2 o 3 34.9%, SiO 2 51.4%; its melting point is 1460°C. Cordierite has good thermal shock resistance, good adsorption performance and certain mechanical strength, so it is widely used. It matches well with various catalyst active components, and has thin pore walls, large geometric surface area, small thermal expansion coefficient and Good thermal shock resistance and other characteristics. Widely used in catalytic converter carrier of automobile exhaust, catalyst carrier in chemical industry, heat exchanger and metal liquid filter in metallurgical industry a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/622C04B35/195C04B38/06B09B3/00
CPCY02W30/78
Inventor 张梅彭犇岳昌盛杜光宝郭敏王习东陆璇赛音巴特尔
Owner BEIJING JINGYEYUAN NEW MATERIALS
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