CN1062132A - Ball mill casting zirconia corundum ball and lining bricks - Google Patents
Ball mill casting zirconia corundum ball and lining bricks Download PDFInfo
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- CN1062132A CN1062132A CN 90106455 CN90106455A CN1062132A CN 1062132 A CN1062132 A CN 1062132A CN 90106455 CN90106455 CN 90106455 CN 90106455 A CN90106455 A CN 90106455A CN 1062132 A CN1062132 A CN 1062132A
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- ball
- rare earth
- corundum
- lining bricks
- earth oxide
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Abstract
A kind of ball mill casting zirconia corundum ball and lining bricks, its main chemical compositions is zirconium white, aluminum oxide, silicon oxide and rare earth oxide.Because abrading-ball and lining bricks are added with a small amount of rare earth oxide, and in preparation technology, adopt to the logical oxygen technology of molten materials and make the product that is provided have the hardness height, good physical such as toughness and wear resisting property are good.In addition, because products material also is the raw material as high grade refractory, therefore adopt the ball mill of this abrading-ball and lining bricks to can be used for processing high grade refractory and high-test cement.This abrading-ball and liner plate long service life can cut down finished cost significantly.
Description
The present invention relates to a kind of silicate product, casting zirconia corundum ball and founding iron corundum lining bricks that specifically a kind of ball mill uses provide the processing method of producing this fused cast corundum product simultaneously.
Usually adopt ball mill to process at industrial production refractory materials and cement fine grinding material, particularly grind when resembling the super or thin material of high grade refractory, white cement or colored cement when needs, require just very high the nonferromagnetic substance of ball mill.The abrading-ball of ball mill use at present adopts metal (cast steel) or ceramic more, and the grinding machine liner plate adopts cast steel or founding corundum lining bricks.Though adopt cast-steel grinding ball and liner plate goods hardness height, good toughness, long service life, the abrading-ball surface has a small amount of finely divided iron powder and is ground to fall to sneaking in the material in the process of lapping.Though adopt magnet and acid washing method can remove big portion iron powder, remove iron powder fully and be difficult to accomplish.Because this cast-steel grinding ball and cast steel liner plate use produce iron powder, therefore not only increase grinding material operation and production cost, and directly influence quality product and use properties.And when using ceramic grinding ball in ball mill, though can avoid process of lapping to sneak into iron powder, ceramic grinding ball is frangible, quick abrasion, and the life-span is low.In addition, present founding diamond spar lining bricks poor toughness of producing, lining bricks easily falls down the quality that block fragment of brick influences grinding material in process of lapping.
The purpose of this invention is to provide abrading-ball and lining bricks that a kind of ball mill uses, use this goods can overcome the shortcoming of above-mentioned present employing product, promptly not only can make does not have iron powder in the process of lapping, and toughness of products is good, hardness is high, long service life can effectively guarantee the quality of grinding material.
Abrading-ball provided by the invention and grinding machine lining bricks adopt casting zirconia corundum ball and founding corundum lining bricks, because this goods belong to silicate AZS series amphoteric refractory, therefore the ultrafine powder under grinding in process of lapping also is the raw material as refractory materials, can effectively guarantee quality of material.The Chemical Composition of this casting zirconia corundum ball and lining bricks is made up of zirconium white, silicon oxide, aluminum oxide and rare earth oxide (be mainly lanthanum trioxide and change the cerium mixture), specifically by weight percentage wherein, and ZrO
2: 20～40%; SiO
2; 10～20%; Al
2; 40～50%; R
2O:0.5～5.00%; Other (Na
2CO
3And Na
2B
4O
7) 0.5～2%.Goods are carried out the thing group analysis, and the zircon monocrystalline is long half pearl, and two strings are spherical, and the chop shape accounts for 10～15%, skewness, crystal is bigger, and beading length is 10～30mm, boule monocrystal is colourless long bolt shape and irregularly shapedly accounts for 15～20%, and skewness, crystal are more greatly at 30～70mm.Baddeleyite and corundum eutectic are the wide plate shape and account for 35～50%, and it is also inhomogeneous to distribute, and crystal is less at 30～80mm.Glassy phase is colourless to account for 15～25%, distribution uniform, the baddeleyite crystallite is less in glassy phase, the needle-like mullite is also less, but with addition of most of the concentrating of mishmetal be distributed in the glassy phase.In addition, the article construction inner air vent accounts for 1～5% of cumulative volume.
Ball mill of the present invention is basic identical with the production technique of casting zirconia corundum ball and lining bricks, and accompanying drawing 1 provides this process flow diagram.Technology shown in Fig. 1 is, 1, raw material weighing mixes and stir; 2, high temperature melting; 3, add rare earth oxide between melting period; 4, the logical oxygen of fusing liquation in latter stage; 5, cast molding; 6, annealing; 7, product shaping; 8, insulation pattern raw material mixes stirring; 9, system pattern; 10, dry baking; 11, make mold.According to process flow diagram shown in Figure 1, the processing method of founding corundum ball of the present invention and lining bricks is: take by weighing to drop in the high-temperature melting furnace after various materials fully mix by goods Chemical Composition proportioning and carry out melting, in the material melting process, add a certain amount of rare earth or mixed rare-earth oxide congruent melting, the oxygen blast of melt casting forward direction melting materials capable, logical oxygen makes suboxide be transformed into high oxide, make the product internal porosity disperse again, can improve etch resistant properties and the tough and the abrasion resistance properties of goods.Molten materials behind the logical oxygen carries out cast molding, can obtain product after the annealing.Annealing can be adopted and carry out in insulation that thermal-insulating type is molded as technology to be in the pattern naturally: the molding material is mixed in proportion stir after, make pattern, drying generally can adopt the far infrared drying stove then, 150～200 ℃ of bakings, be incubated 2～3 hours and can obtain mold.The insulation pattern can adopt natural siliceous sand, water glass, and aluminosilicate refractory fiber, plain powder of charcoal and aluminum oxide powder are raw material, its material proportion can carry out with reference to known technology.
In above-mentioned processing method, can directly obtain founding corundum ball finished product through natural annealing, and lining bricks is being still needed with the arrangement of diamond saw blade cutting processing to products obtained therefrom after annealing naturally, just can make finished product, but this shaping cutting technique can carry out all by common processing method and condition.
Below by example the present invention is given to illustrate in further detail.
Example 1 abrading-ball and with the preparation of founding corundum ball and lining bricks
1, material is selected
For founding corundum ball and lining bricks ingredient requirement; Commercial alumina: Al
2O
3〉=98.5% zircon sand: ZrO
2〉=65%; Soda ash: Na
2CO
3〉=98.5%; Borax: Na
2B
4O
710H
2O 〉=95%; Mishmetal CeO
2＞50%, La
2O
3＞24%.
For being incubated the pattern ingredient requirement: quartz sand: SiO
2〉=96%; Water glass: true specific gravity＞1.4; Aluminosilicate refractory fiber: Al
2O
3〉=60%; Plain powder: the C of charcoal 〉=70%; Commercial alumina: Al
2O
3〉=97%.
2, the goods material is pressed proportioning mixing and stirring, ZrO
232%; SiO
216%; Al
2O
3: 50%; R
2The O(mishmetal): 1%;
3, the material that will be mixed drops into electric furnace and carries out high temperature melting, and temperature of fusion is controlled at 1900～2200 ℃ and is advisable, and the mishmetal raw material is added in fusing simultaneously, can utilize water cooled oxygen lance to the logical oxygen of molten materials, 15～20 meters of logical oxygen may command Oxygen Flow after the melting
3/ time, oxygen pressure 3～kg/cm
2, logical 5～10 minutes oxygen time, carry out cast molding behind the logical oxygen, annealing naturally can obtain founding corundum ball product in the insulation pattern.For making the liner plate fragment of brick, the product after the annealing is got finished product with the diamond saw blade cutting processing.
Thermal-insulating type is molded can match material and making with known technology when doing.
Its physicals of the finished product test that above-mentioned technology is made: cold crushing strength can be not less than 400N/mm
2, refractoriness is not less than 1710 ℃; At 19.6 newton/cm
2Refractoriness under load is not less than 1710 ℃; Capacity is 3.3～3.6S/cm
3; Mohs' hardness is 8～9, and pore accounts for 2% of cumulative volume.
The founding corundum abrading-ball of the invention described above preparation is compared the hardness height with lining bricks than common fusion casting azs series product, and toughness and abrasion resistance properties are good.Because the goods raw material also is a high grade refractory, therefore use the ball mill of this goods to be used to produce high grade refractory in addition, white or colored cement fine grinding material are ideal machines.Because this abrading-ball and lining bricks belong to amphoteric refractory, the powder under the mill can not reduce use properties to acidity, alkalescence or amphoteric refractory, can effectively guarantee the quality of product.Simultaneously because the various good physical performance of goods, long service life can reduce the cost of processing materials significantly.
Claims (6)
1, a kind of ball mill casting zirconia corundum ball is characterized in that its Chemical Composition is made up of zirconium white, silicon oxide, aluminum oxide and rare earth oxide, and rare earth oxide is generally lanthanum trioxide and cerium oxide mixture.
2, a kind of ball mill is formed by containing zirconium silicate with the casting zirconia corundum lining bricks, it is characterized in that still containing in its chemical constitution rare earth oxide, and rare earth oxide is generally lanthanum trioxide and cerium oxide mixture.
3,, it is characterized in that Chemical Composition presses column weight amount per-cent: ZrO according to claim 1,2 described founding corundum balls and founding corundum liner plate
2: 20～40%; SiO
2: 10～20%; Al
2O
3: 40～50%; R
2O:0.5～5%; Other Na
2CO
3And Na
2B
4O
7: 0.5～2%.
4, a kind of preparation technology's method according to claim 1,2 described founding corundum balls and founding corundum lining bricks is characterized in that material adds rare earth oxide in the high temperature melting process; In the logical oxidation of molten materials casting forward direction material.
5, according to the described preparation technology's method of claim 4, it is characterized in that temperature of fusion is controlled at 1900～2200 ℃ of scopes, to the logical oxygen condition of melting materials capable be: 15～20 meters of oxygen flows
3/ time, oxygen pressure 3～5kg/cm
2, logical 5～10 minutes oxygen time.
6,, it is characterized in that after the cast molding adopting the nature annealing process at the thermal-insulating type annealing in mold according to the described preparation technology's method of claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106455 CN1062132A (en) | 1990-12-05 | 1990-12-05 | Ball mill casting zirconia corundum ball and lining bricks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106455 CN1062132A (en) | 1990-12-05 | 1990-12-05 | Ball mill casting zirconia corundum ball and lining bricks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1062132A true CN1062132A (en) | 1992-06-24 |
Family
ID=4880094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90106455 Pending CN1062132A (en) | 1990-12-05 | 1990-12-05 | Ball mill casting zirconia corundum ball and lining bricks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1062132A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0662461A1 (en) * | 1994-01-11 | 1995-07-12 | Societe Europeenne Des Produits Refractaires | Balls from molten ceramic material |
| CN108046799A (en) * | 2018-01-03 | 2018-05-18 | 河南省豫华电熔科技有限公司 | A kind of production technology with capacitance method production fused alumina zirconia ball |
| CN112062549A (en) * | 2020-08-05 | 2020-12-11 | 山东金三河新材料科技有限公司 | Electric smelting zirconium corundum brick and preparation method thereof |
-
1990
- 1990-12-05 CN CN 90106455 patent/CN1062132A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0662461A1 (en) * | 1994-01-11 | 1995-07-12 | Societe Europeenne Des Produits Refractaires | Balls from molten ceramic material |
| FR2714905A1 (en) * | 1994-01-11 | 1995-07-13 | Produits Refractaires | Balls in melted ceramic material. |
| CN108046799A (en) * | 2018-01-03 | 2018-05-18 | 河南省豫华电熔科技有限公司 | A kind of production technology with capacitance method production fused alumina zirconia ball |
| CN112062549A (en) * | 2020-08-05 | 2020-12-11 | 山东金三河新材料科技有限公司 | Electric smelting zirconium corundum brick and preparation method thereof |
| CN112062549B (en) * | 2020-08-05 | 2022-05-17 | 山东金三河新材料科技有限公司 | Electric smelting zirconium corundum brick and preparation method thereof |
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