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Lightweight ceramsite prepared from waste foundry sand and waste ash and preparation method of lightweight ceramsite

A technology for casting waste sand and lightweight ceramsite, which is applied in the field of ceramsite manufacturing, can solve the problems of complex preparation process and high fineness requirements of crushed stone particles, and achieves simple preparation process, less hardware requirements and lower product cost. Effect

Active Publication Date: 2017-11-07
LIUZHOU LIUJING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patent with the publication number CN106431312A provides a preparation method of bauxite lightweight ceramsite in the shape of crushed stone with air purification function. , sieving, roasting, heat preservation, and sieving to form a semi-finished product of bauxite lightweight ceramsite, which is then mixed with scrubable bauxite photocatalyst spraying liquid and soaked to obtain bauxite lightweight ceramsite. The semi-finished product of light ceramsite The preparation process needs to be sieved many times and the fineness of gravel-shaped particles is high, so the preparation process is more complicated

Method used

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  • Lightweight ceramsite prepared from waste foundry sand and waste ash and preparation method of lightweight ceramsite

Examples

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Comparison scheme
Effect test

Embodiment 1

[0026] A lightweight ceramsite prepared by using foundry waste sand and waste ash, which is made of the following components by weight: 95 parts of foundry waste sand and waste ash, 7 parts of bauxite, 0.5 parts of rubber powder, and 0.1 parts of polyvinyl alcohol parts; the weight ratio of foundry waste sand to waste ash is 8:2.

[0027] In this embodiment, the lightweight ceramsite is prepared by the following steps:

[0028] (1) Crushing: Crushing the foundry waste sand and waste ash with a jaw crusher;

[0029] (2) Sieving: Use a 140-mesh sieve to sieve the broken waste sand and waste ash, add 3 parts of water, 4 parts of bauxite and 0.3 parts of rubber powder to the part above 140 mesh, mix evenly with a sand mixer, and use Extrusion granulation machine granulation, the particle size of the granulation is 0.8-1.2cm; add 8 parts of water, 3 parts of bauxite and 0.2 parts of rubber powder to the part below 140 mesh, and mix it in the sand mixer to form a slurry;

[0030] ...

Embodiment 2

[0034] A lightweight ceramsite prepared by using foundry waste sand and waste ash, which is made of the following components by weight: 95 parts of foundry waste sand and waste ash, 5 parts of bauxite, 0.4 parts of rubber powder, and 0.2 parts of polyvinyl alcohol parts; the weight ratio of foundry waste sand to waste ash is 9:1.

[0035] In this embodiment, the lightweight ceramsite is prepared by the following steps:

[0036] (1) Crushing: Crushing the foundry waste sand and waste ash with a jaw crusher;

[0037] (2) Sieving: Use a 140-mesh sieve to sieve the broken waste sand and waste ash, add 4 parts of water, 3 parts of bauxite and 0.2 parts of rubber powder to the part above 140 mesh, mix evenly with a sand mixer, and use Extrusion granulation machine granulation, the particle size of granulation is 0.8-1.2cm; 9 parts of water, 2 parts of bauxite and 0.1 part of rubber powder are added to the part below 140 mesh, and then mixed in the sand mixer to form a slurry;

[0...

Embodiment 3

[0042] A lightweight ceramsite prepared by using foundry waste sand and waste ash, which is made of the following components by weight: 95 parts of foundry waste sand and waste ash, 3 parts of bauxite, 0.1 part of rubber powder, and 0.3 parts of polyvinyl alcohol parts; the weight ratio of foundry waste sand to waste ash is 8.5:1.5.

[0043] In this embodiment, the lightweight ceramsite is prepared by the following steps:

[0044] (1) Crushing: Crushing the foundry waste sand and waste ash with a jaw crusher;

[0045] (2) Sieving: Use a 140-mesh sieve to sieve the broken waste sand and waste ash, add 2 parts of water, 2 parts of bauxite and 0.05 part of rubber powder to the part above 140 mesh, mix it evenly with a sand mixer, and use Extrusion granulation machine granulation, the particle size of granulation is 0.8-1.2cm; add 7 parts of water, 1 part of bauxite and 0.05 part of rubber powder to the part below 140 mesh, and mix it in the sand mixer to form a slurry;

[0046]...

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Abstract

The invention relates to the field of preparation of lightweight ceramsites, in particular to a lightweight ceramsite prepared from waste foundry ash and waste sand, and a preparation method of the lightweight ceramsite. The lightweight ceramsite is prepared from the following components in parts by weight: 95 parts of waste foundry sand and waste ash, 3 to 7 parts of bauxite, 0.1 to 0.5 part of rubber powder and 0.1 to 0.3 part of polyvinyl alcohol, wherein the weight ratio of the waste foundry sand to the waste ash is (8 to 2) to (9 to 1). According to the preparation method disclosed by the invention, the waste foundry sand and the waste ash are directly used for preparing the lightweight ceramsite, and classification treatment of the waste ash and the waste sand are not needed; in addition, special requirements on the granularity of the waste ash and the waste sand are avoided, and all the waste foundry ash and waste sand can be disposed by using a set of equipment, so the preparation method has the advantages of simple preparation technology, small input quantity of the equipment and few hardware requirements on sites and the like; meanwhile, resources are saved and environmental pollution is reduced by secondary utilization of the waste foundry ash and the waste sand.

Description

technical field [0001] The invention relates to the field of ceramsite production, in particular to a lightweight ceramsite produced by using foundry waste sand and waste ash and a preparation method thereof. Background technique [0002] A large amount of foundry waste ash and waste sand will be produced in the process of casting production. In order to reduce environmental pollution and improve the utilization rate of resources, the method of recycling and utilizing the foundry waste ash and waste sand is used for treatment. At present, the commonly used method is to roast waste sand at high temperature into raw sand and reuse it; foundry waste ash (generally refers to the finer waste ash in the dust collector) is made into lightweight ceramsite, which can be used for planting, filtering sewage, Insulation building materials, etc. However, in conventional treatment methods, waste ash and waste sand need to be treated separately, which requires not only waste ash and waste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B33/138
CPCC04B33/1328C04B33/138C04B38/009C04B2235/3217C04B2235/96C04B2235/9607Y02P40/60
Inventor 任文强任文虎王古月
Owner LIUZHOU LIUJING TECH CO LTD
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