Casting ceramsite and preparation method and application thereof

A technology of ceramsite and particle size distribution, applied in casting molding equipment, casting molds, manufacturing tools, etc., can solve the problems of increasing casting costs, high production costs of pearl sand, and difficulty in controlling pollution, reducing casting costs and thermal expansion. Low rate and uniform particle size

Pending Publication Date: 2018-08-28
HANDAN SHENGHUO CERAMIC PROPPANT CO LTD
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  • Abstract
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Problems solved by technology

Therefore, whether it is the mining of ore raw materials in the early stage or the preparation of pearl sand in the later stage, a large amount of pollution

Method used

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  • Casting ceramsite and preparation method and application thereof
  • Casting ceramsite and preparation method and application thereof

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preparation example Construction

[0036] According to one aspect of the present invention, a kind of preparation method according to above-mentioned casting ceramsite, described preparation method comprises the following steps:

[0037] (a) pulverizing bauxite, bauxite clinker, kaolin and composite additives respectively and mixing uniformly to obtain mixed raw materials;

[0038] (b) Homogenize the mixed raw materials and then granulate to obtain the primary product of cast ceramsite with a particle size distribution range of 0.106-0.4mm, and then perform combined screening and high-temperature calcination on the primary product of cast ceramsite to obtain cast ceramsite .

[0039] In the present invention, the preparation method of the above-mentioned cast ceramsite is as follows: firstly, bauxite, bauxite clinker, kaolin and composite additives are pulverized and mixed evenly to obtain mixed raw materials; then the mixed raw materials are stale and homogenized and then granulated to obtain The primary prod...

Embodiment 1

[0050] A composite additive, in parts by mass, comprising: 12 parts of aluminum oxide, 70 parts of silicon dioxide, 0.6 part of ferric oxide, and 2.5 parts of titanium dioxide.

Embodiment 2

[0052] A composite additive, in parts by mass, comprising: 8 parts of aluminum oxide, 60 parts of silicon dioxide, 0.8 parts of ferric oxide, and 1.5 parts of titanium dioxide.

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Abstract

The invention provides casting ceramsite and a preparation method and application thereof, and relates to the technical field of casting. The casting ceramsite is mainly prepared from bauxite, bauxiteclinker, kaolin and composite additives, the particle size distribution range of the casting ceramsite is 0.106-0.4 mm, and the refractoriness is 1,790-1,900 DEG C. The casting ceramsite has the advantages of high temperature resistance, small particle size, uniform particle shape, high strength, low thermal expansion rate, strong recyclability and the like; not only can ceramic foundry sand be replaced by the casting ceramsite for application in the field of metallurgical casting to meet the casting needs, but also the casting cost can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of casting, in particular to a casting ceramsite and its preparation method and application. Background technique [0002] Foundry sand is a granular refractory material used to prepare molding sand and core sand in foundry production. Foundry sand is divided into two categories according to mineral composition: silica sand and special sand. There are many types of special sand with different uses, such as: ① Limestone sand: It is made of crushed limestone, and the main mineral composition is CaCO 3 , for molding sand and core sand of steel castings; ②magnesia: the main mineral composition is MgO, used for surface sand and core sand of high manganese steel castings, and its powder can be used as coating; ③corundum sand: the main mineral composition is corundum α-Al 2 o 3 , Shell material for investment and ceramic casting; ④ Pearl sand: the main mineral composition is Al 2 o 3 , high temperature resist...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/10B22C1/02
CPCB22C1/02C04B35/10C04B35/66C04B2235/3232C04B2235/3272C04B2235/3418C04B2235/349C04B2235/656C04B2235/6567C04B2235/9607
Inventor 王景硕安丽丽
Owner HANDAN SHENGHUO CERAMIC PROPPANT CO LTD
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