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Ultra-light ceramsite prepared from solid waste and preparation method of ultra-light ceramsite

An ultra-light pottery, content technology, applied in ceramic products, clay products, other household appliances, etc., can solve the problems of insufficient strength, failure to comprehensively utilize solid waste, low added value, etc., and achieve the effect of reducing energy consumption

Active Publication Date: 2020-12-11
ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at the same time, there are the same shortcomings: 1. The amount of solid waste mixed is low, and some studies have mixed more than 50% of clay, which cannot achieve the purpose of comprehensive utilization of solid waste; 2. The density of the prepared ceramsite is generally high , the density level is mostly above 600, and the strength is generally not enough, which greatly limits the scope of use of ceramsite, and the added value is low

Method used

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  • Ultra-light ceramsite prepared from solid waste and preparation method of ultra-light ceramsite

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preparation example Construction

[0024] A preparation method for preparing ultra-light ceramsite from solid waste, comprising the following steps:

[0025] (1) Grinding bauxite tailings, red mud and kaolin tailings to below -0.074mm;

[0026] (2) According to the chemical composition of bauxite tailings, kaolin tailings and red mud, formula is designed so that the chemical composition of the three solid waste raw materials is: Al 2 o 3 The content is 12~18.5wt%, SiO 2 The content is ≥ 45wt%, and the total content of alkali metal and alkaline earth metal is: 14-19wt%;

[0027] (3) According to the formula in step (2), take the three kinds of solid waste raw materials after grinding, add foaming agent and mix evenly, add water, homogenize for 2 hours, pelletize and dry to obtain green pellets;

[0028] (4) Put the raw balls into the muffle furnace and roast to obtain ultra-light building ceramsite products.

[0029] The roasting temperature is as follows: from room temperature to 100°C, the heating rate is ...

Embodiment 1

[0033] The bauxite tailings in this test are the bauxite beneficiation tailings of Zhongzhou Aluminum Industry in Jiaozuo, Henan Province, and the analysis results of its main chemical components are shown in Table 1. Al in tailings 2 o 3 The content is as high as 38.90%, as the main raw material of aluminum source.

[0034] Table 1 Main chemical composition of bauxite tailings (%)

[0035] Element al 2 o 3

SiO 2

MgO Na 2 o

K 2 o

CaO Fe 2 o 3

content / % 38.90 28.12 0.49 0.26 3.80 0.63 12.32

[0036] The kaolin tailings in this test are sandy kaolin beneficiation tailings, and the analysis results of its main chemical components are shown in Table 2. SiO 2 The content is as high as 84.55%, as the main raw material of silicon source.

[0037] Table 2 Composition of main chemical elements of kaolin tailings

[0038] Element Al 2 o 3

SiO 2

MgO Na 2 o

K 2 o

CaO Fe 2 o 3 ...

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Abstract

The invention provides ultra-light ceramsite prepared from solid waste and a preparation method of the ultra-light ceramsite. The ultra-light ceramsite is prepared from the following solid waste raw materials: bauxite tailings, red mud and kaolin tailings, and the chemical components of the three solid waste raw materials after proportioning are as follows: 12-18.5 wt% of Al2O3, 48-54 wt% of SiO2and 14-19 wt% of alkali metal and alkaline earth metal. According to the method, the requirements of grade-400 high-quality ultra-light ceramsite are met, the bauxite tailings, the kaolin tailings andthe red mud are synergistically utilized, traditional shale, clay and talc do not need to be added, the main raw materials of the light building ceramsite are all solid waste, and comprehensive utilization of solid waste raw materials is achieved.

Description

technical field [0001] The invention relates to the technical field of ultra-light ceramsite preparation, in particular to an ultra-light ceramsite prepared from solid waste and a preparation method thereof. Background technique [0002] Ceramsite is a regular sphere or irregular ceramic particles with a certain strength and a particle size of 5-25 mm. There is a hard shell on the surface of ceramsite, which is porous inside and has good physical and chemical properties: high strength, low density, large specific surface area, high porosity, strong adsorption and interception ability, good chemical and thermal stability, acid and heat resistance , Water and gas insulation, thermal insulation. As a popular emerging material, ceramsite is sought after by extensive researchers due to its superior physical and chemical properties, and the advantage that solid waste can be used as raw material to achieve large-scale consumption of solid waste. In recent years, there have been m...

Claims

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Application Information

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IPC IPC(8): C04B38/10C04B33/132C04B33/13C04B33/04
CPCC04B38/10C04B38/009C04B33/1322C04B33/132C04B33/131C04B33/04C04B2235/6562C04B2235/6567C04B2235/77C04B2235/96C04B38/0067Y02P40/60
Inventor 刘玉林童思意刘长淼谭琦赵毅
Owner ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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