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Preparation method of alumina porcelain ball for dry process ball mill

A technology of alumina and alumina powder, applied in the field of new materials, can solve the problems of not being suitable for large-scale production applications, increased production costs, performance deterioration, etc., and achieve the effects of high strength, low wear and few internal defects

Active Publication Date: 2013-09-04
JINGANG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In response to the current market demand, there are many patents explaining that silicon carbide, rare earth, zirconia and other substances are added to alumina ceramics to achieve high impact resistance through grain toughening, and expensive raw materials and complicated processes are added. The production cost has increased too much, so it is not suitable for large-scale production applications. At the same time, poor control of the dosage will directly lead to the increase of internal defects of the product and the direct deterioration of performance.

Method used

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  • Preparation method of alumina porcelain ball for dry process ball mill
  • Preparation method of alumina porcelain ball for dry process ball mill
  • Preparation method of alumina porcelain ball for dry process ball mill

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Raw materials and parts by weight

[0041] Main ingredients: 52 parts of self-fired alumina powder, 37 parts of commercially available alumina powder, 3 parts of kaolin, 3 parts of burnt gemstone clinker;

[0042] Composite sintering aids: 2 parts of diopside, 1.5 parts of talc, 1.5 parts of dolomite;

[0043] (2) Put self-fired alumina powder, commercially available alumina powder, kaolin, coke gemstone clinker and composite sintering aid into a batch ball mill for 15 hours. The fineness of the slurry is 10 μm, and the moisture content is controlled at 43%. Alumina balls are used as the grinding medium, according to the mass ratio: ball: water = 1:3:0.8, after passing through a 40-mesh sieve, the mud is pumped into the horizontal sand mill with a plunger pump for ball milling, and the spindle speed is 1200r / min , the slurry fineness is 2.5μm, the grinding medium is made of wear-resistant alumina micro-beads, according to the mass ratio slurry: ball = 1:4, pass thr...

Embodiment 2

[0049] (1) Raw materials and parts by weight

[0050] Main ingredients: 60 parts of self-fired alumina powder, 30 parts of commercially available alumina powder, 3 parts of kaolin, 3 parts of burnt gemstone clinker;

[0051] Composite sintering aids: 2 parts of diopside, 1.5 parts of talc, 1.5 parts of dolomite;

[0052] (2) Put self-fired alumina powder, commercially available alumina powder, kaolin, coke gemstone clinker and composite sintering aid into a batch ball mill for 15 hours. The slurry fineness is 9 μm, and the water content is controlled at 43%. Alumina ball stone is used as the grinding medium, according to the mass ratio: ball: water = 1: 2.8: 0.8, after passing through a 40-mesh sieve, the mud is pumped into the horizontal sand mill with a plunger pump for ball milling, and the spindle speed is 1250r / min, the slurry fineness is 2.3μm, the grinding medium is made of wear-resistant alumina micro-beads, according to the mass ratio slurry: ball = 1:4, pass throug...

Embodiment 3

[0058] (1) Raw materials and parts by weight

[0059] Main ingredients: 54 parts of self-fired alumina powder, 34 parts of alumina powder, 4 parts of kaolin, 2 parts of burnt gemstone;

[0060] Composite sintering aid: 3 parts of diopside, 2 parts of talc, 1 part of dolomite;

[0061] (2) Put self-fired alumina powder, commercially available alumina powder, kaolin, coke gemstones and composite sintering aids into a batch-type ball mill for ball milling for 15 hours. The fineness of the slurry is 8 μm, and the moisture is controlled at 43%. The ball stone is used as the grinding medium, according to the mass ratio: ball: water = 1:2.5:0.8, after passing through a 40-mesh sieve, the mud is pumped into the horizontal sand mill with a plunger pump for ball milling, and the spindle speed is 1230r / min. The fineness of the material is 2.3μm, and the grinding medium is made of wear-resistant alumina microbeads. According to the mass ratio of slurry: ball = 1:4, it passes through a 18...

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Abstract

The invention discloses a preparation method of an alumina porcelain ball for a dry process ball mill. The method adopts self-baked alumina powder as main material; alumina powder bought from Shandong Aluminium Corporation is used as auxiliary material; flint clay clinker, kaolin and complex sintering assistant are added; and the end product can be obtained after triple special ball milling, spray pelletization ball formation, and low temperature slow baking. The self-baked alumina disclosed by the invention has a conversion rate of 98%; the D90 is smaller than 3 microns; uniform and unified alumina powder is obtained through adding complex mineralizer, and is a mixture of sheet structure and column structure; ball milling is made from self-baked alumina powder and alumina powder bought from the market according to a reasonable proportion; the purpose of increasing impact resistance is achieved without using expensive raw material; through triple special ball milling process, the purposes of adjusting alumina dry ball mill microstructure, optimizing property and lowering manufacture cost are achieved; and the alumina porcelain ball has the characteristics of low abrasion, high intensity, high density, fewer inner deficiencies, good impact resistance and the like, so that the comprehensive performance is excellent.

Description

technical field [0001] The invention relates to a method for preparing alumina ceramic balls for dry ball milling, and belongs to the technical field of new materials. Background technique [0002] With the rapid development of science and technology, new challenges are posed to ceramics. Because of its high hardness, high density, wear resistance and corrosion resistance, alumina ceramic balls are widely used as grinding media in building sanitary ceramics, industrial ceramics, electronic ceramics, high-grade refractory materials, special cement, non-metallic minerals and coatings , paint and other industries. [0003] The appearance quality and physical and chemical properties of alumina ceramic balls have strict requirements (refer to the national standard JCT848.1-2010 wear-resistant alumina balls), Chinese patent CN102491735A discloses a production method of alumina ceramic balls. Specifically: Weigh the ceramic powder according to the following weight ratio: 89.5%-94...

Claims

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Application Information

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IPC IPC(8): C04B35/10C04B35/622
Inventor 赵友谊王琦
Owner JINGANG NEW MATERIALS
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