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Andesite tailing-based foamed ceramic

A technology of foam ceramics and andesite, which is applied in interdisciplinary fields, can solve the problems of many additives, unfavorable promotion, and increased production costs, and achieve the effects of reducing dissolution, avoiding secondary pollution, and low water absorption

Pending Publication Date: 2020-03-31
HUZHOU COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

None of the above patents involves the application of andesite tailings sludge, and more additives are used, which increases the production cost and is not conducive to actual promotion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A lightweight ceramic foam material with andesite tailings slime and fly ash as main raw materials and its preparation method. The main composition of the foam ceramics is: 90% of andesite tailings slime, 8% of fly ash, and 2% of silicon carbide foaming agent .

[0024] Put the andesite tailings mud, fly ash and foaming agent into the ball mill for 8 hours. The ball-milled andesite tailings mud, fly ash and additives are respectively passed through a 200-mesh sieve. Accurately weigh andesite tailings sludge, fly ash, and foaming agent raw materials according to the formula, and stir and mix evenly. Add water with 2% mass of the material to the ingredients and stir evenly, put the prepared batch into a mold and press it into a block green body, and the molding pressure is 20MPa. Put the shaped green body into an oven and fully dry it at a temperature of 80°C. The dried green body is sintered in a muffle furnace from room temperature to 1200°C at a heating rate of 3°C / m...

Embodiment 2

[0026] A lightweight ceramic foam material with andesite tailings slime and fly ash as main raw materials and its preparation method. The main components of the foam ceramics are: 70% andesite tailings slime, 25% fly ash, and 5% foaming agent silicon carbide .

[0027] Put the andesite tailings mud, fly ash and foaming agent into the ball mill for 8 hours. The ball-milled andesite tailings mud, fly ash and additives are respectively passed through a 200-mesh sieve. Accurately weigh andesite tailings sludge, fly ash, and foaming agent raw materials according to the formula, and stir and mix evenly. Add water with 3% mass of the material to the ingredients and stir evenly, put the prepared batch into a mold and press it into a block green body, and the molding pressure is 15MPa. Put the shaped green body into an oven and fully dry it at a temperature of 90°C. The dried green body is sintered in a muffle furnace from room temperature to 1150°C at a heating rate of 4°C / min. The...

Embodiment 3

[0029] A lightweight ceramic foam material with andesite tailings slime and fly ash as main raw materials and its preparation method. The main components of the foam ceramics are: 50% of andesite tailings slime, 48% of fly ash, and 2% of silicon carbide foaming agent .

[0030] Put the andesite tailings mud, fly ash and foaming agent into the ball mill for 8 hours. The ball-milled andesite tailings mud, fly ash and additives are respectively passed through a 200-mesh sieve. Accurately weigh andesite tailings sludge, fly ash, and foaming agent raw materials according to the formula, and stir and mix evenly. Add water with 4% mass of the material to the ingredients and stir evenly, put the prepared batch into a mold and press it into a block green body, and the molding pressure is 10MPa. Put the shaped green body into an oven and fully dry it at a temperature of 100°C. The dried green body is sintered in a muffle furnace from room temperature to 1110°C at a heating rate of 5°C...

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Abstract

The invention discloses foamed ceramic with andesite tailing mud and fly ash as main raw materials. The foamed ceramic is characterized by comprising the following components in percentage by mass: 50-90% of the andesite tailing mud, 8-48% of the fly ash and 2-5% of silicon carbide. A preparation method for the foamed ceramic comprises the following steps: S1, preparing powder; S2, forming and drying a green body; and S3, sintering a sample. The foamed ceramic prepared by the method is short in firing period, simple in formula and preparation process, low in equipment requirement, and excellent in performance. The use amount of solid waste reaches 98%, so production cost is effectively reduced; resource utilization of the solid waste, namely the andesite tailing mud, and the hazardous waste, namely the fly ash is achieved; land occupation of the tailings is reduced; and environmental problems caused by the tailings are relieved.

Description

technical field [0001] The invention belongs to the interdisciplinary technical field of new materials and resources, and in particular relates to a foam ceramic with andesite tailings mud and fly ash as main raw materials and a preparation method thereof. Background technique [0002] Sustainable development has become a topic of common concern to all mankind. The Chinese government attaches great importance to sustainable development and has determined sustainable development as a major national development strategy. However, the current stone mining enterprises will inevitably produce a large amount of powder tailings in the production process. If the tailings sludge cannot be treated and utilized in a timely and effective manner, it will not only occupy a large amount of land resources, but also seriously pollute the environment with dust and destroy the ecology. Therefore, as a common industrial solid waste, the comprehensive utilization of tailings sludge has become a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B33/132C04B33/135
CPCC04B38/02C04B33/132C04B33/1352C04B33/1328C04B2235/77C04B2235/96C04B38/0067Y02P40/60
Inventor 王永亚谢雨衡陈佳倩陈海锋潘国祥祝守新伍涛
Owner HUZHOU COLLEGE
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