Method for preparing foamed ceramics

A technology for foaming ceramics and foaming agents, which is applied in the production of ceramic products, ceramic materials, clay products, etc., can solve the problems of difficulty in flexible adjustment, low utilization efficiency of tailings, and reduction in the amount of Luoyuanhong used, so as to reduce the bulk density and Thermal conductivity, improve overall utilization efficiency, and improve the effect of various performances

Active Publication Date: 2019-12-13
FUJIAN DESHENG NEW BUILDING MATERIAL CO LTD
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Problems solved by technology

However, the added value of this permeable brick (square brick) is low; and because Luo Yuanhong has poor plasticity, a large amount of bonding base material and liquid glue are added to the formula, which reduces the amount of Luo Yuanhong used
[0004] According to the analysis of Luoyuan red tailings, it is mainly composed of mica, quartz and feldspar, which are also mixed with some iron and titanium minerals; these iron and titanium minerals will decompose and release oxygen during the firing process, which will affect the growth of foamed ceramics. At the same time, iron-titanium minerals will also make the foamed ceramics appear red or black as a whole, which is not conducive to the production of high-quality foamed ceramics (such as sculptures)
Moreover, due to the specific ratio of quartz, feldspar, and mica in Luoyuan red tailings, it is often difficult to adjust the formula flexibly, resulting in low utilization efficiency of tailings and poor performance of the prepared foamed ceramics

Method used

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  • Method for preparing foamed ceramics
  • Method for preparing foamed ceramics
  • Method for preparing foamed ceramics

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preparation example Construction

[0038] refer to figure 1 , the invention provides a kind of preparation method of foam ceramics, it comprises the following steps:

[0039] S1: Crushing the Luoyuan red tailings to obtain the first mixture;

[0040] Specifically, a jaw crusher or a cone crusher can be used to crush the Luoyuan red tailings; preferably, a cone crusher is used for coarse crushing. After coarse crushing, the particle size of the first mixture is 0.1-5 mm; preferably 0.1-3 mm.

[0041] S2: Pulverizing the first mixture to obtain a second mixture;

[0042] Wherein, the first mixture can be pulverized by using a ball mill or a roller mill; preferably, a ball mill is used. Further preferably, wet ball milling is used to pulverize the first mixture. The wet ball has low grinding energy and is suitable for grinding hard minerals. After pulverization, the particle diameter of the second mixture is 2-1000 μm. Preferably, the particle size of the second mixture is 2-800 μm. The second mixture slurr...

Embodiment 1

[0079] The present embodiment provides a kind of preparation method of foam ceramics, it comprises the following steps:

[0080] (1) crushing the Luoyuan red tailings to a particle size of ≤4mm to obtain the first mixture;

[0081] (2) ball milling the first mixture to a particle size of ≤800 μm to obtain a second mixture;

[0082] (3) Carrying out magnetic separation to the second mixture to obtain fine iron ore and the third mixture;

[0083] (4) wet sieving the third mixture to obtain the first feldspar and the fourth mixture with a particle size of 500-800 μm;

[0084] (5) subjecting the fourth mixture to hydrocyclone classification, controlling the overflow density to be 450-500 mesh, and obtaining the second feldspar and washed soil;

[0085] (6) Mix various raw materials according to the formula to obtain the mixture; wherein, the formula is: 25 parts of washed soil, 11 parts of the first feldspar, 55 parts of the second feldspar, 5 parts of sandbag soil, 3 parts of s...

Embodiment 2

[0094] The present embodiment provides a kind of preparation method of foam ceramics, it comprises the following steps:

[0095] (1) Crushing the Luoyuan red tailings to a particle size of ≤3mm to obtain the first mixture;

[0096] (2) ball milling the first mixture to a particle size ≤ 850 μm to obtain a second mixture;

[0097] (3) Carrying out magnetic separation to the second mixture to obtain fine iron ore and the third mixture;

[0098] (4) wet sieving the third mixture to obtain the first feldspar and the fourth mixture with a particle size of 600-850 μm;

[0099] (5) The fourth mixture is subjected to hydrocyclone classification, and the overflow density is controlled to be 300-500 mesh, and the second feldspar and washed soil are obtained;

[0100] (6) Mix various raw materials according to the formula to obtain a compound; wherein, the formula is: 32 parts of washed soil, 11 parts of the first feldspar, 54 parts of the second feldspar, 2.2 parts of silicon carbide,...

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Abstract

The invention discloses a method for preparing foamed ceramics. The method comprises the following steps: performing crushing, grinding, magnetic separation and twice grading on Luoyuan red tailings to obtain first feldspar, second feldspar and washing soil; mixing the washing soil, the first feldspar, the second feldspar, clay and a foaming agent and a stabilizing agent in a formula to obtain a mixture; and performing ball-milling, spray granulation and fabric sintering on the mixture to obtain a foamed ceramic finished product. According to the preparation method, the Luoyuan red tailings are classified to obtain washing feldspar and washing soil, which are applied to production of foamed ceramics. According to the classification, the formula adjustment flexibility is greatly promoted, the whole utilization efficiency of the Luoyuan tailings is improved, and the performance of the foamed ceramics is improved.

Description

technical field [0001] The invention relates to the field of inorganic non-metallic materials, in particular to a method for preparing foamed ceramics. Background technique [0002] Luoyuanhong is a kind of granite produced in Luoyuan County, Fuzhou City, Fujian Province. It has bright colors and outstanding decorative properties. It is widely used as materials for panels, floor coverings, countertops, carvings, various building and garden stones. During the processing of Luoyuanhong, a large amount of Luoyuanhong tailings are produced, which mainly include slag produced during the cutting process and powder materials produced during the polishing and grinding process. A large number of these tailings are piled up around the processing plant, which has caused tremendous pressure on the local ecological environment. Therefore, how to make resource utilization of Luoyuan red tailings is an urgent problem to be solved. [0003] Chinese patent CN108558359A discloses a technica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132C04B38/02
CPCC04B33/1324C04B33/1321C04B33/1328C04B38/02C04B2235/656C04B2235/6567C04B2235/77C04B2235/96C04B2235/9607C04B2235/3267C04B2235/3826C04B38/0067Y02P40/60
Inventor 朱祥辉
Owner FUJIAN DESHENG NEW BUILDING MATERIAL CO LTD
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