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Method for preparing environment-friendly honeycomb ceramic heat accumulator by use of waste slag

A technology of honeycomb ceramics and waste slag, applied in the field of environmental protection, energy saving and new materials, can solve the problems of heavy pollution, unfavorable pollution control and haze reduction, high energy consumption, etc., and achieve the effects of reducing pollution, optimizing process flow, and optimizing process parameters

Inactive Publication Date: 2014-08-20
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Utilizing secondary resources such as industrial waste slag or waste materials, adopting sintering methods with low energy consumption and low pollution, optimizing the process and conditions, improving the microstructure, and making the honeycomb ceramic regenerator obtain better mechanical properties have become the main research trends. To achieve this goal, some researchers have introduced different waste residues or waste materials into the ingredients and optimized the preparation process, which has improved the mechanical properties of the honeycomb ceramic regenerator to a certain extent. However, it still cannot fundamentally solve the problem of traditional ceramics. The shortcomings of high energy consumption and large pollution in the preparation method are extremely unfavorable for pollution control and haze reduction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0039] (1) Put the used raw materials into a ball mill for dry grinding, use alumina ball stone as the grinding medium, control the mass ratio of the ball and the raw material to 2:1, grind for 2 hours and pass through a 325 mesh sieve to obtain red pages rock waste, phosphate slag, waste glass, limestone, talc and coke powder;

[0040] (2) Get sieved red shale waste, phosphate rock slag, waste glass, limestone, talc, coke powder and alumina powder (Al in alumina powder 2 o 3 Content≥98%, particle size is 3~5μm), by mass parts red shale waste: phosphate slag: waste glass: limestone: talc: coke powder: alumina powder=20:55:10:5:3:5: 2. Put the prepared materials together into a ball mill for dry grinding, use alumina ball stone as the grinding medium, control the mass ratio of the ball and the raw material to 2:1, grind for 1 hour, and add 6wt% binder (PVA ), ball milled and mixed and crossed 40 mesh sieves to form a mixture;

[0041] (3) The mixture is placed in a pressure ...

Embodiment 2

[0045] (1) Put the used raw materials into a ball mill for dry grinding, use alumina ball stone as the grinding medium, control the mass ratio of the ball and the raw material to be 3:1, and pass through a 325 mesh sieve after grinding for 0.5h respectively to obtain red Shale waste, lead-zinc mine tailings, waste glass, limestone, talc and coke fines;

[0046] (2) Get sieved red shale waste, lead-zinc ore tailings, waste glass, limestone, talc, coke powder and alumina powder (Al in alumina powder 2 o 3 Content ≥ 98%, particle size is 3 ~ 5μm), by mass parts red shale waste: lead-zinc ore tailings: waste glass: limestone: talc: coke powder: alumina powder = 25:40:10:9:5: 8:3, put the prepared materials together into the ball mill for dry grinding, use alumina ball stone as the grinding medium, control the mass ratio of the ball and the raw material to be 3:1, grind for 0.5h, and add 6wt% bonding agent (PVA), dry grinding and mixing and crossing 40 mesh sieves to form a mixtu...

Embodiment 3

[0051] (1) Put the used raw materials into a ball mill for dry grinding respectively, use alumina ball stone as the grinding medium, control the mass ratio of the ball and the raw material to be 2.3:1, and pass through a 325 mesh sieve after grinding for 1.8 hours respectively to obtain red Shale waste, bauxite slag, waste glass, limestone, talc and coke fines;

[0052] (2) Get sieved red shale waste, bauxite slag, waste glass, limestone, talc, coke powder and alumina powder (Al in alumina powder 2 o 3 content≥98%, particle size is 3~5μm), by mass parts red shale waste: bauxite slag: waste glass: limestone: talc: coke powder: alumina powder=20:40:15:10:4:10 : 1, put the prepared materials together into the ball mill for dry grinding, use alumina ball stone as the grinding medium, control the mass ratio of the ball and the raw material to be 2.3:1, grind for 0.8h, and add 6wt% binder (PVA), dry grinding and mixing and crossing 40 mesh sieves to form a mixture;

[0053] (3) T...

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Abstract

The invention discloses a method for preparing an environment-friendly honeycomb ceramic heat accumulator by use of waste slag. On the basis of introducing a great quantity of waste slag and optimizing the traditional process, the new sintering method and technology are applied to the traditional ceramic product, the dry-process equipment is adopted, and one-time formation and two-time laser short-time sintering are realized. The environment-friendly honeycomb ceramic heat accumulator provided by the invention is produced in a clean and pollution-free manner, and the product has the production advantages of high strength, good thermal shock resistance, low processing energy consumption, short production period and cleanness and no pollution. The breaking strength of the honeycomb ceramic heat accumulator is 35-42MPa, the true density is 2.2-2.4g / cm<3>, the water absorption is 0.2-0.9%, the operating temperature is 1,000-1,250 DEG C, and the requirements for the performance of a heat accumulation material in a regenerative thermal oxidizer (RTO) device can be met.

Description

technical field [0001] The invention belongs to the field of environmental protection, energy saving and new materials, and relates to an environmentally friendly heat storage functional material, in particular to a method for preparing an environment-friendly honeycomb ceramic heat storage body by using waste slag. Background technique [0002] In recent years, energy and its related environment have become the most concerned hotspots in countries all over the world. Due to the shortage of per capita energy resources, limited environmental capacity and fragile ecology in our country, it will greatly restrict the sustainable development of our country. Domestic GDP is growing rapidly every year, energy consumption is increasing rapidly, and the environment and ecology are deteriorating day by day. Saving energy and reducing consumption has become a major direction for solving energy problems. According to statistics, the energy consumption of the domestic industrial sector...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/00C04B35/622
Inventor 陈平殷海荣刘锦涛袁文韬李轲
Owner SHAANXI UNIV OF SCI & TECH
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