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Method for preparing inert porcelain ball by using aluminum oxide dust-recovery powder

A technology of inert ceramic balls and alumina balls, applied in the field of new materials, can solve the problems of high price and high price, and achieve the effects of improving thermal shock resistance and strength, low energy consumption and simple production process

Active Publication Date: 2013-09-18
JINGANG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is the use of expensive titanium oxide raw materials
Although the patent application does not clearly indicate the corresponding relationship between the ingredients and the firing temperature, it can be speculated according to the theory that titanium oxide should be the main body especially when firing at a lower temperature, so the price is very high

Method used

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  • Method for preparing inert porcelain ball by using aluminum oxide dust-recovery powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Obtain the accurate proportioning of each raw material meeting the requirements respectively by weight.

[0030] The raw material ratio of the inert ceramic ball is (parts by weight): alumina dust collection powder: kaolin: calcium carbonate: talc: spodumene = 87 parts: 10 parts: 1 part: 1 part: 1 part.

[0031] (2) Put the alumina dust collection powder, kaolin and composite sintering aid into a continuous ball mill for dry grinding, use alumina ball stone as the grinding medium, the cylinder of the ball mill is 7.48m long, and the cylinder diameter is 1.5m. Materials: Ball = 1:2.5, discharge 4 tons per hour, then pass through a 250-mesh sieve, and electromagnetically remove iron to obtain a mixture.

[0032] (3) Homogenize the mixture obtained in step (2) through a homogenization bin.

[0033] (4) Roll the homogenized material powder obtained in step (3) through a ball forming machine to obtain a semi-finished ball blank of the required size. During the spheroid...

Embodiment 2

[0037] (1) Obtain the accurate proportioning of each raw material meeting the requirements respectively by weight.

[0038] The raw material ratio of the inert ceramic ball is (parts by weight): alumina dust collection powder: kaolin: calcium carbonate: talc: spodumene = 89 parts: 9 parts: 0.5 parts: 0.8 parts: 0.7 parts.

[0039] (2) Put the alumina dust collection powder, kaolin and composite sintering aid into a continuous ball mill for dry grinding, use alumina ball stone as the grinding medium, the cylinder of the ball mill is 7.48m long, and the cylinder diameter is 1.5m. Materials: Ball = 1:3, discharge 5 tons per hour, then pass through a 250-mesh sieve, electromagnetic iron removal to obtain the mixture.

[0040] (3) Homogenize the mixture obtained in step (2) through a homogenization bin.

[0041] (4) Roll the homogenized material powder obtained in step (3) through a ball forming machine to obtain a semi-finished ball blank of the required size. During the spheroi...

Embodiment 3

[0045] (1) Obtain the accurate proportioning of each raw material meeting the requirements respectively by weight.

[0046] The raw material ratio of the inert ceramic ball is (parts by weight): alumina dust collection powder: kaolin: calcium carbonate: talc: spodumene = 90 parts: 7 parts: 0.5 parts: 0.8 parts: 1.7 parts.

[0047] (2) Put the alumina dust collection powder, kaolin and composite sintering aid into a continuous ball mill for dry grinding, use alumina ball stone as the grinding medium, the cylinder of the ball mill is 7.48m long, and the cylinder diameter is 1.5m. Materials: Ball = 1:2.8, discharge 4.5 tons per hour, then pass through a 250-mesh sieve, and electromagnetically remove iron to obtain a mixture.

[0048] (3) Homogenize the mixture obtained in step (2) through a homogenization bin.

[0049] (4) Roll the homogenized material powder obtained in step (3) through a ball forming machine to obtain a semi-finished ball blank of the required size. During th...

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Abstract

The invention discloses a method for preparing an inert porcelain ball by using an aluminum oxide dust-recovery powder and belongs to the technical field of new materials. A lot of aluminum oxide dust-recovery powder is used in the formulation of the method disclosed by the invention, the cost is obviously reduced, meanwhile a waste material is used and the environment is protected. According to the method disclosed by the invention, a composite sintering aid comprising calcium carbonate, talcum, and spodumene mineral powder is added into the formulation to facilitate the formation of magnesia-alumina spinel and mullite for enhancing in the product so as to improve the thermal shock resistance and strength of a product; a little kaolin is added into the formulation for improving the plasticity of a perform body, promoting molding conveniently and improving the strength of a green body; meanwhile in order to reduce the high energy consumption caused by wet ball milling, the powder for preparing the inert porcelain ball disclosed by the invention is subjected to continuous dry wet milling; the inert porcelain ball prepared by the method disclosed by the invention has the characteristics of high temperature resistance, high strength, good thermal shock resistance and the like, is excellent in comprehensive performance, and is completely suitable for requirements for a catalyst carrier and supporting performance in various industries.

Description

technical field [0001] The invention relates to a method for preparing inert ceramic balls by using alumina dust collection powder, which belongs to the technical field of new materials. Background technique [0002] Alumina inert ceramic balls are widely used in petroleum, chemical, environmental protection and other industries, mainly as catalyst carriers and tower packings. Alumina inert ceramic balls have high chemical stability and thermal stability. When used as a tower packing, it can improve the treatment efficiency of the tower, reduce the pressure drop, and increase the flow rate; when used as a catalyst carrier, its main function is to increase the gas or liquid distribution point and improve the catalytic efficiency; and effectively protect the catalyst from being contaminated by oil The impurity pollution in the catalyst will lead to coking and poisoning of the catalyst, which prolongs the service life of the catalyst. [0003] At present, alumina inert cerami...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/622
Inventor 赵友谊曾华生王琦宋启波马晓兵
Owner JINGANG NEW MATERIALS
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